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Comparing libev/ev.c (file contents):
Revision 1.251 by root, Thu May 22 03:42:34 2008 UTC vs.
Revision 1.505 by root, Wed Jul 10 14:25:35 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 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"
50# endif 46# endif
51 47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52# endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# 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
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
100# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
102# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
109# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
110# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
111# else
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
114# endif 136# endif
115 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
116# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
122# endif 145# endif
123 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_INOTIFY
125# if HAVE_EVENTFD 149# define EV_USE_INOTIFY EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# 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
130# endif 172# endif
131 173
132#endif 174#endif
133 175
134#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
135#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
136#include <fcntl.h> 188#include <fcntl.h>
137#include <stddef.h> 189#include <stddef.h>
138 190
139#include <stdio.h> 191#include <stdio.h>
140 192
141#include <assert.h> 193#include <assert.h>
142#include <errno.h> 194#include <errno.h>
143#include <sys/types.h> 195#include <sys/types.h>
144#include <time.h> 196#include <time.h>
197#include <limits.h>
145 198
146#include <signal.h> 199#include <signal.h>
147 200
148#ifdef EV_H 201#ifdef EV_H
149# include EV_H 202# include EV_H
150#else 203#else
151# 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
152#endif 216#endif
153 217
154#ifndef _WIN32 218#ifndef _WIN32
155# include <sys/time.h> 219# include <sys/time.h>
156# include <sys/wait.h> 220# include <sys/wait.h>
157# include <unistd.h> 221# include <unistd.h>
158#else 222#else
223# include <io.h>
159# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
160# include <windows.h> 226# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
163# endif 229# endif
230# undef EV_AVOID_STDIO
164#endif 231#endif
165 232
166/* 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 */
167 234
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
264#ifndef EV_USE_CLOCK_SYSCALL
265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
267# else
268# define EV_USE_CLOCK_SYSCALL 0
269# endif
270#endif
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
168#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
283# define EV_USE_MONOTONIC EV_FEATURE_OS
284# else
169# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
286# endif
170#endif 287#endif
171 288
172#ifndef EV_USE_REALTIME 289#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 291#endif
175 292
176#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
294# if _POSIX_C_SOURCE >= 199309L
295# define EV_USE_NANOSLEEP EV_FEATURE_OS
296# else
177# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
298# endif
178#endif 299#endif
179 300
180#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 303#endif
183 304
184#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
185# ifdef _WIN32 306# ifdef _WIN32
186# define EV_USE_POLL 0 307# define EV_USE_POLL 0
187# else 308# else
188# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 310# endif
190#endif 311#endif
191 312
192#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 316# else
196# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
197# endif 318# endif
198#endif 319#endif
199 320
… …
203 324
204#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
205# define EV_USE_PORT 0 326# define EV_USE_PORT 0
206#endif 327#endif
207 328
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
208#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 347# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 348# else
212# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
213# endif 350# endif
214#endif 351#endif
215 352
216#ifndef EV_PID_HASHSIZE 353#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 354# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 355#endif
223 356
224#ifndef EV_INOTIFY_HASHSIZE 357#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 358# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 359#endif
231 360
232#ifndef EV_USE_EVENTFD 361#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 363# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 364# else
236# 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
237# endif 374# endif
238#endif 375#endif
239 376
240#if 0 /* debugging */ 377#if 0 /* debugging */
241# define EV_VERIFY 3 378# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 379# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 380# define EV_HEAP_CACHE_AT 1
244#endif 381#endif
245 382
246#ifndef EV_VERIFY 383#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 384# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 385#endif
249 386
250#ifndef EV_USE_4HEAP 387#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 388# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 389#endif
253 390
254#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
255# 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
256#endif 424#endif
257 425
258/* 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 */
259 427
260#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
… …
271# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
272# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
273#endif 441#endif
274 442
275#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
276# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
277# include <sys/select.h> 446# include <sys/select.h>
278# endif 447# endif
279#endif 448#endif
280 449
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
281#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
476# include <sys/statfs.h>
282# include <sys/inotify.h> 477# include <sys/inotify.h>
478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
479# ifndef IN_DONT_FOLLOW
480# undef EV_USE_INOTIFY
481# define EV_USE_INOTIFY 0
283#endif 482# endif
284
285#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h>
287#endif 483#endif
288 484
289#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
290/* 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 */
291# include <stdint.h> 487# include <stdint.h>
292# ifdef __cplusplus 488# ifndef EFD_NONBLOCK
293extern "C" { 489# define EFD_NONBLOCK O_NONBLOCK
294# endif 490# endif
295int eventfd (unsigned int initval, int flags); 491# ifndef EFD_CLOEXEC
296# ifdef __cplusplus 492# ifdef O_CLOEXEC
297} 493# define EFD_CLOEXEC O_CLOEXEC
494# else
495# define EFD_CLOEXEC 02000000
496# endif
298# 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
299#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);
300 515
301/**/ 516struct signalfd_siginfo
517{
518 uint32_t ssi_signo;
519 char pad[128 - sizeof (uint32_t)];
520};
521#endif
522
523/*****************************************************************************/
302 524
303#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 527#else
306# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
307#endif 529#endif
308 530
309/* 531/*
310 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
311 * It is added to ev_rt_now when scheduling periodics
312 * to ensure progress, time-wise, even when rounding
313 * errors are against us.
314 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
315 * Better solutions welcome.
316 */ 534 */
317#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 */
318 537
319#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) */
320#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) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322 540
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_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
550#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
551#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e6)
552#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e9)
553
554/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
555/* ECB.H BEGIN */
556/*
557 * libecb - http://software.schmorp.de/pkg/libecb
558 *
559 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
560 * Copyright (©) 2011 Emanuele Giaquinta
561 * All rights reserved.
562 *
563 * Redistribution and use in source and binary forms, with or without modifica-
564 * tion, are permitted provided that the following conditions are met:
565 *
566 * 1. Redistributions of source code must retain the above copyright notice,
567 * this list of conditions and the following disclaimer.
568 *
569 * 2. Redistributions in binary form must reproduce the above copyright
570 * notice, this list of conditions and the following disclaimer in the
571 * documentation and/or other materials provided with the distribution.
572 *
573 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
574 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
575 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
576 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
577 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
578 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
579 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
580 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
581 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
582 * OF THE POSSIBILITY OF SUCH DAMAGE.
583 *
584 * Alternatively, the contents of this file may be used under the terms of
585 * the GNU General Public License ("GPL") version 2 or any later version,
586 * in which case the provisions of the GPL are applicable instead of
587 * the above. If you wish to allow the use of your version of this file
588 * only under the terms of the GPL and not to allow others to use your
589 * version of this file under the BSD license, indicate your decision
590 * by deleting the provisions above and replace them with the notice
591 * and other provisions required by the GPL. If you do not delete the
592 * provisions above, a recipient may use your version of this file under
593 * either the BSD or the GPL.
594 */
595
596#ifndef ECB_H
597#define ECB_H
598
599/* 16 bits major, 16 bits minor */
600#define ECB_VERSION 0x00010006
601
602#ifdef _WIN32
603 typedef signed char int8_t;
604 typedef unsigned char uint8_t;
605 typedef signed short int16_t;
606 typedef unsigned short uint16_t;
607 typedef signed int int32_t;
608 typedef unsigned int uint32_t;
323#if __GNUC__ >= 4 609 #if __GNUC__
324# define expect(expr,value) __builtin_expect ((expr),(value)) 610 typedef signed long long int64_t;
325# define noinline __attribute__ ((noinline)) 611 typedef unsigned long long uint64_t;
612 #else /* _MSC_VER || __BORLANDC__ */
613 typedef signed __int64 int64_t;
614 typedef unsigned __int64 uint64_t;
615 #endif
616 #ifdef _WIN64
617 #define ECB_PTRSIZE 8
618 typedef uint64_t uintptr_t;
619 typedef int64_t intptr_t;
620 #else
621 #define ECB_PTRSIZE 4
622 typedef uint32_t uintptr_t;
623 typedef int32_t intptr_t;
624 #endif
326#else 625#else
327# define expect(expr,value) (expr) 626 #include <inttypes.h>
328# define noinline 627 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
329# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 628 #define ECB_PTRSIZE 8
330# define inline 629 #else
630 #define ECB_PTRSIZE 4
631 #endif
331# endif 632#endif
633
634#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
635#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
636
637/* work around x32 idiocy by defining proper macros */
638#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
639 #if _ILP32
640 #define ECB_AMD64_X32 1
641 #else
642 #define ECB_AMD64 1
332#endif 643 #endif
644#endif
333 645
334#define expect_false(expr) expect ((expr) != 0, 0) 646/* many compilers define _GNUC_ to some versions but then only implement
335#define expect_true(expr) expect ((expr) != 0, 1) 647 * what their idiot authors think are the "more important" extensions,
336#define inline_size static inline 648 * causing enormous grief in return for some better fake benchmark numbers.
337 649 * or so.
338#if EV_MINIMAL 650 * we try to detect these and simply assume they are not gcc - if they have
339# define inline_speed static noinline 651 * an issue with that they should have done it right in the first place.
652 */
653#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
654 #define ECB_GCC_VERSION(major,minor) 0
340#else 655#else
656 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
657#endif
658
659#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
660
661#if __clang__ && defined __has_builtin
662 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
663#else
664 #define ECB_CLANG_BUILTIN(x) 0
665#endif
666
667#if __clang__ && defined __has_extension
668 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
669#else
670 #define ECB_CLANG_EXTENSION(x) 0
671#endif
672
673#define ECB_CPP (__cplusplus+0)
674#define ECB_CPP11 (__cplusplus >= 201103L)
675#define ECB_CPP14 (__cplusplus >= 201402L)
676#define ECB_CPP17 (__cplusplus >= 201703L)
677
678#if ECB_CPP
679 #define ECB_C 0
680 #define ECB_STDC_VERSION 0
681#else
682 #define ECB_C 1
683 #define ECB_STDC_VERSION __STDC_VERSION__
684#endif
685
686#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
687#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
688#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
689
690#if ECB_CPP
691 #define ECB_EXTERN_C extern "C"
692 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
693 #define ECB_EXTERN_C_END }
694#else
695 #define ECB_EXTERN_C extern
696 #define ECB_EXTERN_C_BEG
697 #define ECB_EXTERN_C_END
698#endif
699
700/*****************************************************************************/
701
702/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
703/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
704
705#if ECB_NO_THREADS
706 #define ECB_NO_SMP 1
707#endif
708
709#if ECB_NO_SMP
710 #define ECB_MEMORY_FENCE do { } while (0)
711#endif
712
713/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
714#if __xlC__ && ECB_CPP
715 #include <builtins.h>
716#endif
717
718#if 1400 <= _MSC_VER
719 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
720#endif
721
722#ifndef ECB_MEMORY_FENCE
723 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
725 #if __i386 || __i386__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
727 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
729 #elif ECB_GCC_AMD64
730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
731 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
732 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
733 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
735 #elif defined __ARM_ARCH_2__ \
736 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
737 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
738 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
739 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
740 || defined __ARM_ARCH_5TEJ__
741 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
742 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
743 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
744 || defined __ARM_ARCH_6T2__
745 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
746 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
747 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
749 #elif __aarch64__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
751 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
755 #elif defined __s390__ || defined __s390x__
756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
757 #elif defined __mips__
758 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
759 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
760 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
761 #elif defined __alpha__
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
763 #elif defined __hppa__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
765 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
766 #elif defined __ia64__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
768 #elif defined __m68k__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #elif defined __m88k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
772 #elif defined __sh__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
774 #endif
775 #endif
776#endif
777
778#ifndef ECB_MEMORY_FENCE
779 #if ECB_GCC_VERSION(4,7)
780 /* see comment below (stdatomic.h) about the C11 memory model. */
781 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
782 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
783 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
784 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
785
786 #elif ECB_CLANG_EXTENSION(c_atomic)
787 /* see comment below (stdatomic.h) about the C11 memory model. */
788 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
789 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
790 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
791 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
792
793 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
794 #define ECB_MEMORY_FENCE __sync_synchronize ()
795 #elif _MSC_VER >= 1500 /* VC++ 2008 */
796 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
797 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
798 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
799 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
800 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
801 #elif _MSC_VER >= 1400 /* VC++ 2005 */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
806 #elif defined _WIN32
807 #include <WinNT.h>
808 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
809 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
810 #include <mbarrier.h>
811 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
812 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
813 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
814 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
815 #elif __xlC__
816 #define ECB_MEMORY_FENCE __sync ()
817 #endif
818#endif
819
820#ifndef ECB_MEMORY_FENCE
821 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
822 /* we assume that these memory fences work on all variables/all memory accesses, */
823 /* not just C11 atomics and atomic accesses */
824 #include <stdatomic.h>
825 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
826 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
827 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
828 #endif
829#endif
830
831#ifndef ECB_MEMORY_FENCE
832 #if !ECB_AVOID_PTHREADS
833 /*
834 * if you get undefined symbol references to pthread_mutex_lock,
835 * or failure to find pthread.h, then you should implement
836 * the ECB_MEMORY_FENCE operations for your cpu/compiler
837 * OR provide pthread.h and link against the posix thread library
838 * of your system.
839 */
840 #include <pthread.h>
841 #define ECB_NEEDS_PTHREADS 1
842 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
843
844 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
845 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
846 #endif
847#endif
848
849#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
850 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
851#endif
852
853#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
854 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
855#endif
856
857#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
858 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
859#endif
860
861/*****************************************************************************/
862
863#if ECB_CPP
864 #define ecb_inline static inline
865#elif ECB_GCC_VERSION(2,5)
866 #define ecb_inline static __inline__
867#elif ECB_C99
868 #define ecb_inline static inline
869#else
870 #define ecb_inline static
871#endif
872
873#if ECB_GCC_VERSION(3,3)
874 #define ecb_restrict __restrict__
875#elif ECB_C99
876 #define ecb_restrict restrict
877#else
878 #define ecb_restrict
879#endif
880
881typedef int ecb_bool;
882
883#define ECB_CONCAT_(a, b) a ## b
884#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
885#define ECB_STRINGIFY_(a) # a
886#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
887#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
888
889#define ecb_function_ ecb_inline
890
891#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
892 #define ecb_attribute(attrlist) __attribute__ (attrlist)
893#else
894 #define ecb_attribute(attrlist)
895#endif
896
897#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
898 #define ecb_is_constant(expr) __builtin_constant_p (expr)
899#else
900 /* possible C11 impl for integral types
901 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
902 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
903
904 #define ecb_is_constant(expr) 0
905#endif
906
907#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
908 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
909#else
910 #define ecb_expect(expr,value) (expr)
911#endif
912
913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
914 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
915#else
916 #define ecb_prefetch(addr,rw,locality)
917#endif
918
919/* no emulation for ecb_decltype */
920#if ECB_CPP11
921 // older implementations might have problems with decltype(x)::type, work around it
922 template<class T> struct ecb_decltype_t { typedef T type; };
923 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
924#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
925 #define ecb_decltype(x) __typeof__ (x)
926#endif
927
928#if _MSC_VER >= 1300
929 #define ecb_deprecated __declspec (deprecated)
930#else
931 #define ecb_deprecated ecb_attribute ((__deprecated__))
932#endif
933
934#if _MSC_VER >= 1500
935 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
936#elif ECB_GCC_VERSION(4,5)
937 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
938#else
939 #define ecb_deprecated_message(msg) ecb_deprecated
940#endif
941
942#if _MSC_VER >= 1400
943 #define ecb_noinline __declspec (noinline)
944#else
945 #define ecb_noinline ecb_attribute ((__noinline__))
946#endif
947
948#define ecb_unused ecb_attribute ((__unused__))
949#define ecb_const ecb_attribute ((__const__))
950#define ecb_pure ecb_attribute ((__pure__))
951
952#if ECB_C11 || __IBMC_NORETURN
953 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
954 #define ecb_noreturn _Noreturn
955#elif ECB_CPP11
956 #define ecb_noreturn [[noreturn]]
957#elif _MSC_VER >= 1200
958 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
959 #define ecb_noreturn __declspec (noreturn)
960#else
961 #define ecb_noreturn ecb_attribute ((__noreturn__))
962#endif
963
964#if ECB_GCC_VERSION(4,3)
965 #define ecb_artificial ecb_attribute ((__artificial__))
966 #define ecb_hot ecb_attribute ((__hot__))
967 #define ecb_cold ecb_attribute ((__cold__))
968#else
969 #define ecb_artificial
970 #define ecb_hot
971 #define ecb_cold
972#endif
973
974/* put around conditional expressions if you are very sure that the */
975/* expression is mostly true or mostly false. note that these return */
976/* booleans, not the expression. */
977#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
978#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
979/* for compatibility to the rest of the world */
980#define ecb_likely(expr) ecb_expect_true (expr)
981#define ecb_unlikely(expr) ecb_expect_false (expr)
982
983/* count trailing zero bits and count # of one bits */
984#if ECB_GCC_VERSION(3,4) \
985 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
986 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
987 && ECB_CLANG_BUILTIN(__builtin_popcount))
988 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
989 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
990 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
991 #define ecb_ctz32(x) __builtin_ctz (x)
992 #define ecb_ctz64(x) __builtin_ctzll (x)
993 #define ecb_popcount32(x) __builtin_popcount (x)
994 /* no popcountll */
995#else
996 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
997 ecb_function_ ecb_const int
998 ecb_ctz32 (uint32_t x)
999 {
1000#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1001 unsigned long r;
1002 _BitScanForward (&r, x);
1003 return (int)r;
1004#else
1005 int r = 0;
1006
1007 x &= ~x + 1; /* this isolates the lowest bit */
1008
1009#if ECB_branchless_on_i386
1010 r += !!(x & 0xaaaaaaaa) << 0;
1011 r += !!(x & 0xcccccccc) << 1;
1012 r += !!(x & 0xf0f0f0f0) << 2;
1013 r += !!(x & 0xff00ff00) << 3;
1014 r += !!(x & 0xffff0000) << 4;
1015#else
1016 if (x & 0xaaaaaaaa) r += 1;
1017 if (x & 0xcccccccc) r += 2;
1018 if (x & 0xf0f0f0f0) r += 4;
1019 if (x & 0xff00ff00) r += 8;
1020 if (x & 0xffff0000) r += 16;
1021#endif
1022
1023 return r;
1024#endif
1025 }
1026
1027 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1028 ecb_function_ ecb_const int
1029 ecb_ctz64 (uint64_t x)
1030 {
1031#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1032 unsigned long r;
1033 _BitScanForward64 (&r, x);
1034 return (int)r;
1035#else
1036 int shift = x & 0xffffffff ? 0 : 32;
1037 return ecb_ctz32 (x >> shift) + shift;
1038#endif
1039 }
1040
1041 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1042 ecb_function_ ecb_const int
1043 ecb_popcount32 (uint32_t x)
1044 {
1045 x -= (x >> 1) & 0x55555555;
1046 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1047 x = ((x >> 4) + x) & 0x0f0f0f0f;
1048 x *= 0x01010101;
1049
1050 return x >> 24;
1051 }
1052
1053 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1054 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1055 {
1056#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1057 unsigned long r;
1058 _BitScanReverse (&r, x);
1059 return (int)r;
1060#else
1061 int r = 0;
1062
1063 if (x >> 16) { x >>= 16; r += 16; }
1064 if (x >> 8) { x >>= 8; r += 8; }
1065 if (x >> 4) { x >>= 4; r += 4; }
1066 if (x >> 2) { x >>= 2; r += 2; }
1067 if (x >> 1) { r += 1; }
1068
1069 return r;
1070#endif
1071 }
1072
1073 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1074 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1075 {
1076#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1077 unsigned long r;
1078 _BitScanReverse64 (&r, x);
1079 return (int)r;
1080#else
1081 int r = 0;
1082
1083 if (x >> 32) { x >>= 32; r += 32; }
1084
1085 return r + ecb_ld32 (x);
1086#endif
1087 }
1088#endif
1089
1090ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1091ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1092ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1094
1095ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1096ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1097{
1098 return ( (x * 0x0802U & 0x22110U)
1099 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1100}
1101
1102ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1103ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1104{
1105 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1106 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1107 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1108 x = ( x >> 8 ) | ( x << 8);
1109
1110 return x;
1111}
1112
1113ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1114ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1115{
1116 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1117 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1118 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1119 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1120 x = ( x >> 16 ) | ( x << 16);
1121
1122 return x;
1123}
1124
1125/* popcount64 is only available on 64 bit cpus as gcc builtin */
1126/* so for this version we are lazy */
1127ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1128ecb_function_ ecb_const int
1129ecb_popcount64 (uint64_t x)
1130{
1131 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1132}
1133
1134ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1135ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1136ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1137ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1138ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1139ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1140ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1141ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1142
1143ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1144ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1145ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1146ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1147ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1148ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1149ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1150ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1151
1152#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1153 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1154 #define ecb_bswap16(x) __builtin_bswap16 (x)
1155 #else
1156 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1157 #endif
1158 #define ecb_bswap32(x) __builtin_bswap32 (x)
1159 #define ecb_bswap64(x) __builtin_bswap64 (x)
1160#elif _MSC_VER
1161 #include <stdlib.h>
1162 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1163 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1164 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1165#else
1166 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1167 ecb_function_ ecb_const uint16_t
1168 ecb_bswap16 (uint16_t x)
1169 {
1170 return ecb_rotl16 (x, 8);
1171 }
1172
1173 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1174 ecb_function_ ecb_const uint32_t
1175 ecb_bswap32 (uint32_t x)
1176 {
1177 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1178 }
1179
1180 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1181 ecb_function_ ecb_const uint64_t
1182 ecb_bswap64 (uint64_t x)
1183 {
1184 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1185 }
1186#endif
1187
1188#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1189 #define ecb_unreachable() __builtin_unreachable ()
1190#else
1191 /* this seems to work fine, but gcc always emits a warning for it :/ */
1192 ecb_inline ecb_noreturn void ecb_unreachable (void);
1193 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1194#endif
1195
1196/* try to tell the compiler that some condition is definitely true */
1197#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1198
1199ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1200ecb_inline ecb_const uint32_t
1201ecb_byteorder_helper (void)
1202{
1203 /* the union code still generates code under pressure in gcc, */
1204 /* but less than using pointers, and always seems to */
1205 /* successfully return a constant. */
1206 /* the reason why we have this horrible preprocessor mess */
1207 /* is to avoid it in all cases, at least on common architectures */
1208 /* or when using a recent enough gcc version (>= 4.6) */
1209#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1210 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1211 #define ECB_LITTLE_ENDIAN 1
1212 return 0x44332211;
1213#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1214 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1215 #define ECB_BIG_ENDIAN 1
1216 return 0x11223344;
1217#else
1218 union
1219 {
1220 uint8_t c[4];
1221 uint32_t u;
1222 } u = { 0x11, 0x22, 0x33, 0x44 };
1223 return u.u;
1224#endif
1225}
1226
1227ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1228ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1229ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1231
1232#if ECB_GCC_VERSION(3,0) || ECB_C99
1233 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1234#else
1235 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1236#endif
1237
1238#if ECB_CPP
1239 template<typename T>
1240 static inline T ecb_div_rd (T val, T div)
1241 {
1242 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1243 }
1244 template<typename T>
1245 static inline T ecb_div_ru (T val, T div)
1246 {
1247 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1248 }
1249#else
1250 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1251 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1252#endif
1253
1254#if ecb_cplusplus_does_not_suck
1255 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1256 template<typename T, int N>
1257 static inline int ecb_array_length (const T (&arr)[N])
1258 {
1259 return N;
1260 }
1261#else
1262 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1263#endif
1264
1265ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1266ecb_function_ ecb_const uint32_t
1267ecb_binary16_to_binary32 (uint32_t x)
1268{
1269 unsigned int s = (x & 0x8000) << (31 - 15);
1270 int e = (x >> 10) & 0x001f;
1271 unsigned int m = x & 0x03ff;
1272
1273 if (ecb_expect_false (e == 31))
1274 /* infinity or NaN */
1275 e = 255 - (127 - 15);
1276 else if (ecb_expect_false (!e))
1277 {
1278 if (ecb_expect_true (!m))
1279 /* zero, handled by code below by forcing e to 0 */
1280 e = 0 - (127 - 15);
1281 else
1282 {
1283 /* subnormal, renormalise */
1284 unsigned int s = 10 - ecb_ld32 (m);
1285
1286 m = (m << s) & 0x3ff; /* mask implicit bit */
1287 e -= s - 1;
1288 }
1289 }
1290
1291 /* e and m now are normalised, or zero, (or inf or nan) */
1292 e += 127 - 15;
1293
1294 return s | (e << 23) | (m << (23 - 10));
1295}
1296
1297ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1298ecb_function_ ecb_const uint16_t
1299ecb_binary32_to_binary16 (uint32_t x)
1300{
1301 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1302 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1303 unsigned int m = x & 0x007fffff;
1304
1305 x &= 0x7fffffff;
1306
1307 /* if it's within range of binary16 normals, use fast path */
1308 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1309 {
1310 /* mantissa round-to-even */
1311 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1312
1313 /* handle overflow */
1314 if (ecb_expect_false (m >= 0x00800000))
1315 {
1316 m >>= 1;
1317 e += 1;
1318 }
1319
1320 return s | (e << 10) | (m >> (23 - 10));
1321 }
1322
1323 /* handle large numbers and infinity */
1324 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1325 return s | 0x7c00;
1326
1327 /* handle zero, subnormals and small numbers */
1328 if (ecb_expect_true (x < 0x38800000))
1329 {
1330 /* zero */
1331 if (ecb_expect_true (!x))
1332 return s;
1333
1334 /* handle subnormals */
1335
1336 /* too small, will be zero */
1337 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1338 return s;
1339
1340 m |= 0x00800000; /* make implicit bit explicit */
1341
1342 /* very tricky - we need to round to the nearest e (+10) bit value */
1343 {
1344 unsigned int bits = 14 - e;
1345 unsigned int half = (1 << (bits - 1)) - 1;
1346 unsigned int even = (m >> bits) & 1;
1347
1348 /* if this overflows, we will end up with a normalised number */
1349 m = (m + half + even) >> bits;
1350 }
1351
1352 return s | m;
1353 }
1354
1355 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1356 m >>= 13;
1357
1358 return s | 0x7c00 | m | !m;
1359}
1360
1361/*******************************************************************************/
1362/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1363
1364/* basically, everything uses "ieee pure-endian" floating point numbers */
1365/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1366#if 0 \
1367 || __i386 || __i386__ \
1368 || ECB_GCC_AMD64 \
1369 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1370 || defined __s390__ || defined __s390x__ \
1371 || defined __mips__ \
1372 || defined __alpha__ \
1373 || defined __hppa__ \
1374 || defined __ia64__ \
1375 || defined __m68k__ \
1376 || defined __m88k__ \
1377 || defined __sh__ \
1378 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1379 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1380 || defined __aarch64__
1381 #define ECB_STDFP 1
1382 #include <string.h> /* for memcpy */
1383#else
1384 #define ECB_STDFP 0
1385#endif
1386
1387#ifndef ECB_NO_LIBM
1388
1389 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1390
1391 /* only the oldest of old doesn't have this one. solaris. */
1392 #ifdef INFINITY
1393 #define ECB_INFINITY INFINITY
1394 #else
1395 #define ECB_INFINITY HUGE_VAL
1396 #endif
1397
1398 #ifdef NAN
1399 #define ECB_NAN NAN
1400 #else
1401 #define ECB_NAN ECB_INFINITY
1402 #endif
1403
1404 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1405 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1406 #define ecb_frexpf(x,e) frexpf ((x), (e))
1407 #else
1408 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1409 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1410 #endif
1411
1412 /* convert a float to ieee single/binary32 */
1413 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1414 ecb_function_ ecb_const uint32_t
1415 ecb_float_to_binary32 (float x)
1416 {
1417 uint32_t r;
1418
1419 #if ECB_STDFP
1420 memcpy (&r, &x, 4);
1421 #else
1422 /* slow emulation, works for anything but -0 */
1423 uint32_t m;
1424 int e;
1425
1426 if (x == 0e0f ) return 0x00000000U;
1427 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1428 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1429 if (x != x ) return 0x7fbfffffU;
1430
1431 m = ecb_frexpf (x, &e) * 0x1000000U;
1432
1433 r = m & 0x80000000U;
1434
1435 if (r)
1436 m = -m;
1437
1438 if (e <= -126)
1439 {
1440 m &= 0xffffffU;
1441 m >>= (-125 - e);
1442 e = -126;
1443 }
1444
1445 r |= (e + 126) << 23;
1446 r |= m & 0x7fffffU;
1447 #endif
1448
1449 return r;
1450 }
1451
1452 /* converts an ieee single/binary32 to a float */
1453 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1454 ecb_function_ ecb_const float
1455 ecb_binary32_to_float (uint32_t x)
1456 {
1457 float r;
1458
1459 #if ECB_STDFP
1460 memcpy (&r, &x, 4);
1461 #else
1462 /* emulation, only works for normals and subnormals and +0 */
1463 int neg = x >> 31;
1464 int e = (x >> 23) & 0xffU;
1465
1466 x &= 0x7fffffU;
1467
1468 if (e)
1469 x |= 0x800000U;
1470 else
1471 e = 1;
1472
1473 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1474 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1475
1476 r = neg ? -r : r;
1477 #endif
1478
1479 return r;
1480 }
1481
1482 /* convert a double to ieee double/binary64 */
1483 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1484 ecb_function_ ecb_const uint64_t
1485 ecb_double_to_binary64 (double x)
1486 {
1487 uint64_t r;
1488
1489 #if ECB_STDFP
1490 memcpy (&r, &x, 8);
1491 #else
1492 /* slow emulation, works for anything but -0 */
1493 uint64_t m;
1494 int e;
1495
1496 if (x == 0e0 ) return 0x0000000000000000U;
1497 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1498 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1499 if (x != x ) return 0X7ff7ffffffffffffU;
1500
1501 m = frexp (x, &e) * 0x20000000000000U;
1502
1503 r = m & 0x8000000000000000;;
1504
1505 if (r)
1506 m = -m;
1507
1508 if (e <= -1022)
1509 {
1510 m &= 0x1fffffffffffffU;
1511 m >>= (-1021 - e);
1512 e = -1022;
1513 }
1514
1515 r |= ((uint64_t)(e + 1022)) << 52;
1516 r |= m & 0xfffffffffffffU;
1517 #endif
1518
1519 return r;
1520 }
1521
1522 /* converts an ieee double/binary64 to a double */
1523 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1524 ecb_function_ ecb_const double
1525 ecb_binary64_to_double (uint64_t x)
1526 {
1527 double r;
1528
1529 #if ECB_STDFP
1530 memcpy (&r, &x, 8);
1531 #else
1532 /* emulation, only works for normals and subnormals and +0 */
1533 int neg = x >> 63;
1534 int e = (x >> 52) & 0x7ffU;
1535
1536 x &= 0xfffffffffffffU;
1537
1538 if (e)
1539 x |= 0x10000000000000U;
1540 else
1541 e = 1;
1542
1543 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1544 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1545
1546 r = neg ? -r : r;
1547 #endif
1548
1549 return r;
1550 }
1551
1552 /* convert a float to ieee half/binary16 */
1553 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1554 ecb_function_ ecb_const uint16_t
1555 ecb_float_to_binary16 (float x)
1556 {
1557 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1558 }
1559
1560 /* convert an ieee half/binary16 to float */
1561 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1562 ecb_function_ ecb_const float
1563 ecb_binary16_to_float (uint16_t x)
1564 {
1565 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1566 }
1567
1568#endif
1569
1570#endif
1571
1572/* ECB.H END */
1573
1574#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1575/* if your architecture doesn't need memory fences, e.g. because it is
1576 * single-cpu/core, or if you use libev in a project that doesn't use libev
1577 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1578 * libev, in which cases the memory fences become nops.
1579 * alternatively, you can remove this #error and link against libpthread,
1580 * which will then provide the memory fences.
1581 */
1582# error "memory fences not defined for your architecture, please report"
1583#endif
1584
1585#ifndef ECB_MEMORY_FENCE
1586# define ECB_MEMORY_FENCE do { } while (0)
1587# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1589#endif
1590
1591#define inline_size ecb_inline
1592
1593#if EV_FEATURE_CODE
341# define inline_speed static inline 1594# define inline_speed ecb_inline
1595#else
1596# define inline_speed ecb_noinline static
342#endif 1597#endif
343 1598
1599/*****************************************************************************/
1600/* raw syscall wrappers */
1601
1602#if EV_NEED_SYSCALL
1603
1604#include <sys/syscall.h>
1605
1606/*
1607 * define some syscall wrappers for common architectures
1608 * this is mostly for nice looks during debugging, not performance.
1609 * our syscalls return < 0, not == -1, on error. which is good
1610 * enough for linux aio.
1611 * TODO: arm is also common nowadays, maybe even mips and x86
1612 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1613 */
1614#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1615 /* the costly errno access probably kills this for size optimisation */
1616
1617 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1618 ({ \
1619 long res; \
1620 register unsigned long r6 __asm__ ("r9" ); \
1621 register unsigned long r5 __asm__ ("r8" ); \
1622 register unsigned long r4 __asm__ ("r10"); \
1623 register unsigned long r3 __asm__ ("rdx"); \
1624 register unsigned long r2 __asm__ ("rsi"); \
1625 register unsigned long r1 __asm__ ("rdi"); \
1626 if (narg >= 6) r6 = (unsigned long)(arg6); \
1627 if (narg >= 5) r5 = (unsigned long)(arg5); \
1628 if (narg >= 4) r4 = (unsigned long)(arg4); \
1629 if (narg >= 3) r3 = (unsigned long)(arg3); \
1630 if (narg >= 2) r2 = (unsigned long)(arg2); \
1631 if (narg >= 1) r1 = (unsigned long)(arg1); \
1632 __asm__ __volatile__ ( \
1633 "syscall\n\t" \
1634 : "=a" (res) \
1635 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1636 : "cc", "r11", "cx", "memory"); \
1637 errno = -res; \
1638 res; \
1639 })
1640
1641#endif
1642
1643#ifdef ev_syscall
1644 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1645 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1646 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1647 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1648 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1649 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1650 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1651#else
1652 #define ev_syscall0(nr) syscall (nr)
1653 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1654 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1655 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1656 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1657 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1658 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1659#endif
1660
1661#endif
1662
1663/*****************************************************************************/
1664
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1665#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1666
1667#if EV_MINPRI == EV_MAXPRI
1668# define ABSPRI(w) (((W)w), 0)
1669#else
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1670# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1671#endif
346 1672
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1673#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */
349 1674
350typedef ev_watcher *W; 1675typedef ev_watcher *W;
351typedef ev_watcher_list *WL; 1676typedef ev_watcher_list *WL;
352typedef ev_watcher_time *WT; 1677typedef ev_watcher_time *WT;
353 1678
354#define ev_active(w) ((W)(w))->active 1679#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 1680#define ev_at(w) ((WT)(w))->at
356 1681
1682#if EV_USE_REALTIME
1683/* sig_atomic_t is used to avoid per-thread variables or locking but still */
1684/* giving it a reasonably high chance of working on typical architectures */
1685static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
1686#endif
1687
357#if EV_USE_MONOTONIC 1688#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1689static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
1690#endif
1691
1692#ifndef EV_FD_TO_WIN32_HANDLE
1693# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1694#endif
1695#ifndef EV_WIN32_HANDLE_TO_FD
1696# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1697#endif
1698#ifndef EV_WIN32_CLOSE_FD
1699# define EV_WIN32_CLOSE_FD(fd) close (fd)
361#endif 1700#endif
362 1701
363#ifdef _WIN32 1702#ifdef _WIN32
364# include "ev_win32.c" 1703# include "ev_win32.c"
365#endif 1704#endif
366 1705
367/*****************************************************************************/ 1706/*****************************************************************************/
368 1707
1708#if EV_USE_LINUXAIO
1709# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1710#endif
1711
1712/* define a suitable floor function (only used by periodics atm) */
1713
1714#if EV_USE_FLOOR
1715# include <math.h>
1716# define ev_floor(v) floor (v)
1717#else
1718
1719#include <float.h>
1720
1721/* a floor() replacement function, should be independent of ev_tstamp type */
1722ecb_noinline
1723static ev_tstamp
1724ev_floor (ev_tstamp v)
1725{
1726 /* the choice of shift factor is not terribly important */
1727#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1728 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1729#else
1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1731#endif
1732
1733 /* special treatment for negative arguments */
1734 if (ecb_expect_false (v < 0.))
1735 {
1736 ev_tstamp f = -ev_floor (-v);
1737
1738 return f - (f == v ? 0 : 1);
1739 }
1740
1741 /* argument too large for an unsigned long? then reduce it */
1742 if (ecb_expect_false (v >= shift))
1743 {
1744 ev_tstamp f;
1745
1746 if (v == v - 1.)
1747 return v; /* very large numbers are assumed to be integer */
1748
1749 f = shift * ev_floor (v * (1. / shift));
1750 return f + ev_floor (v - f);
1751 }
1752
1753 /* fits into an unsigned long */
1754 return (unsigned long)v;
1755}
1756
1757#endif
1758
1759/*****************************************************************************/
1760
1761#ifdef __linux
1762# include <sys/utsname.h>
1763#endif
1764
1765ecb_noinline ecb_cold
1766static unsigned int
1767ev_linux_version (void)
1768{
1769#ifdef __linux
1770 unsigned int v = 0;
1771 struct utsname buf;
1772 int i;
1773 char *p = buf.release;
1774
1775 if (uname (&buf))
1776 return 0;
1777
1778 for (i = 3+1; --i; )
1779 {
1780 unsigned int c = 0;
1781
1782 for (;;)
1783 {
1784 if (*p >= '0' && *p <= '9')
1785 c = c * 10 + *p++ - '0';
1786 else
1787 {
1788 p += *p == '.';
1789 break;
1790 }
1791 }
1792
1793 v = (v << 8) | c;
1794 }
1795
1796 return v;
1797#else
1798 return 0;
1799#endif
1800}
1801
1802/*****************************************************************************/
1803
1804#if EV_AVOID_STDIO
1805ecb_noinline ecb_cold
1806static void
1807ev_printerr (const char *msg)
1808{
1809 write (STDERR_FILENO, msg, strlen (msg));
1810}
1811#endif
1812
369static void (*syserr_cb)(const char *msg); 1813static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
370 1814
1815ecb_cold
371void 1816void
372ev_set_syserr_cb (void (*cb)(const char *msg)) 1817ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
373{ 1818{
374 syserr_cb = cb; 1819 syserr_cb = cb;
375} 1820}
376 1821
377static void noinline 1822ecb_noinline ecb_cold
1823static void
378syserr (const char *msg) 1824ev_syserr (const char *msg)
379{ 1825{
380 if (!msg) 1826 if (!msg)
381 msg = "(libev) system error"; 1827 msg = "(libev) system error";
382 1828
383 if (syserr_cb) 1829 if (syserr_cb)
384 syserr_cb (msg); 1830 syserr_cb (msg);
385 else 1831 else
386 { 1832 {
1833#if EV_AVOID_STDIO
1834 ev_printerr (msg);
1835 ev_printerr (": ");
1836 ev_printerr (strerror (errno));
1837 ev_printerr ("\n");
1838#else
387 perror (msg); 1839 perror (msg);
1840#endif
388 abort (); 1841 abort ();
389 } 1842 }
390} 1843}
391 1844
392static void * 1845static void *
393ev_realloc_emul (void *ptr, long size) 1846ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
394{ 1847{
395 /* some systems, notably openbsd and darwin, fail to properly 1848 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and 1849 * implement realloc (x, 0) (as required by both ansi c-89 and
397 * the single unix specification, so work around them here. 1850 * the single unix specification, so work around them here.
1851 * recently, also (at least) fedora and debian started breaking it,
1852 * despite documenting it otherwise.
398 */ 1853 */
399 1854
400 if (size) 1855 if (size)
401 return realloc (ptr, size); 1856 return realloc (ptr, size);
402 1857
403 free (ptr); 1858 free (ptr);
404 return 0; 1859 return 0;
405} 1860}
406 1861
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1862static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
408 1863
1864ecb_cold
409void 1865void
410ev_set_allocator (void *(*cb)(void *ptr, long size)) 1866ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
411{ 1867{
412 alloc = cb; 1868 alloc = cb;
413} 1869}
414 1870
415inline_speed void * 1871inline_speed void *
… …
417{ 1873{
418 ptr = alloc (ptr, size); 1874 ptr = alloc (ptr, size);
419 1875
420 if (!ptr && size) 1876 if (!ptr && size)
421 { 1877 {
1878#if EV_AVOID_STDIO
1879 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1880#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1881 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1882#endif
423 abort (); 1883 abort ();
424 } 1884 }
425 1885
426 return ptr; 1886 return ptr;
427} 1887}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 1889#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 1890#define ev_free(ptr) ev_realloc ((ptr), 0)
431 1891
432/*****************************************************************************/ 1892/*****************************************************************************/
433 1893
1894/* set in reify when reification needed */
1895#define EV_ANFD_REIFY 1
1896
1897/* file descriptor info structure */
434typedef struct 1898typedef struct
435{ 1899{
436 WL head; 1900 WL head;
437 unsigned char events; 1901 unsigned char events; /* the events watched for */
438 unsigned char reify; 1902 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1903 unsigned char emask; /* some backends store the actual kernel mask in here */
1904 unsigned char eflags; /* flags field for use by backends */
1905#if EV_USE_EPOLL
1906 unsigned int egen; /* generation counter to counter epoll bugs */
1907#endif
439#if EV_SELECT_IS_WINSOCKET 1908#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
440 SOCKET handle; 1909 SOCKET handle;
441#endif 1910#endif
1911#if EV_USE_IOCP
1912 OVERLAPPED or, ow;
1913#endif
442} ANFD; 1914} ANFD;
443 1915
1916/* stores the pending event set for a given watcher */
444typedef struct 1917typedef struct
445{ 1918{
446 W w; 1919 W w;
447 int events; 1920 int events; /* the pending event set for the given watcher */
448} ANPENDING; 1921} ANPENDING;
449 1922
450#if EV_USE_INOTIFY 1923#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 1924/* hash table entry per inotify-id */
452typedef struct 1925typedef struct
… …
455} ANFS; 1928} ANFS;
456#endif 1929#endif
457 1930
458/* Heap Entry */ 1931/* Heap Entry */
459#if EV_HEAP_CACHE_AT 1932#if EV_HEAP_CACHE_AT
1933 /* a heap element */
460 typedef struct { 1934 typedef struct {
461 ev_tstamp at; 1935 ev_tstamp at;
462 WT w; 1936 WT w;
463 } ANHE; 1937 } ANHE;
464 1938
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1939 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1940 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1941 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 1942#else
1943 /* a heap element */
469 typedef WT ANHE; 1944 typedef WT ANHE;
470 1945
471 #define ANHE_w(he) (he) 1946 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 1947 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 1948 #define ANHE_at_cache(he)
… …
484 #undef VAR 1959 #undef VAR
485 }; 1960 };
486 #include "ev_wrap.h" 1961 #include "ev_wrap.h"
487 1962
488 static struct ev_loop default_loop_struct; 1963 static struct ev_loop default_loop_struct;
489 struct ev_loop *ev_default_loop_ptr; 1964 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
490 1965
491#else 1966#else
492 1967
493 ev_tstamp ev_rt_now; 1968 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
494 #define VAR(name,decl) static decl; 1969 #define VAR(name,decl) static decl;
495 #include "ev_vars.h" 1970 #include "ev_vars.h"
496 #undef VAR 1971 #undef VAR
497 1972
498 static int ev_default_loop_ptr; 1973 static int ev_default_loop_ptr;
499 1974
500#endif 1975#endif
501 1976
1977#if EV_FEATURE_API
1978# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1979# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1980# define EV_INVOKE_PENDING invoke_cb (EV_A)
1981#else
1982# define EV_RELEASE_CB (void)0
1983# define EV_ACQUIRE_CB (void)0
1984# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1985#endif
1986
1987#define EVBREAK_RECURSE 0x80
1988
502/*****************************************************************************/ 1989/*****************************************************************************/
503 1990
1991#ifndef EV_HAVE_EV_TIME
504ev_tstamp 1992ev_tstamp
505ev_time (void) 1993ev_time (void) EV_NOEXCEPT
506{ 1994{
507#if EV_USE_REALTIME 1995#if EV_USE_REALTIME
1996 if (ecb_expect_true (have_realtime))
1997 {
508 struct timespec ts; 1998 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 1999 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 2000 return EV_TS_GET (ts);
511#else 2001 }
2002#endif
2003
512 struct timeval tv; 2004 struct timeval tv;
513 gettimeofday (&tv, 0); 2005 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 2006 return EV_TV_GET (tv);
515#endif
516} 2007}
2008#endif
517 2009
518ev_tstamp inline_size 2010inline_size ev_tstamp
519get_clock (void) 2011get_clock (void)
520{ 2012{
521#if EV_USE_MONOTONIC 2013#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 2014 if (ecb_expect_true (have_monotonic))
523 { 2015 {
524 struct timespec ts; 2016 struct timespec ts;
525 clock_gettime (CLOCK_MONOTONIC, &ts); 2017 clock_gettime (CLOCK_MONOTONIC, &ts);
526 return ts.tv_sec + ts.tv_nsec * 1e-9; 2018 return EV_TS_GET (ts);
527 } 2019 }
528#endif 2020#endif
529 2021
530 return ev_time (); 2022 return ev_time ();
531} 2023}
532 2024
533#if EV_MULTIPLICITY 2025#if EV_MULTIPLICITY
534ev_tstamp 2026ev_tstamp
535ev_now (EV_P) 2027ev_now (EV_P) EV_NOEXCEPT
536{ 2028{
537 return ev_rt_now; 2029 return ev_rt_now;
538} 2030}
539#endif 2031#endif
540 2032
541void 2033void
542ev_sleep (ev_tstamp delay) 2034ev_sleep (ev_tstamp delay) EV_NOEXCEPT
543{ 2035{
544 if (delay > 0.) 2036 if (delay > 0.)
545 { 2037 {
546#if EV_USE_NANOSLEEP 2038#if EV_USE_NANOSLEEP
547 struct timespec ts; 2039 struct timespec ts;
548 2040
549 ts.tv_sec = (time_t)delay; 2041 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 2042 nanosleep (&ts, 0);
553#elif defined(_WIN32) 2043#elif defined _WIN32
2044 /* maybe this should round up, as ms is very low resolution */
2045 /* compared to select (µs) or nanosleep (ns) */
554 Sleep ((unsigned long)(delay * 1e3)); 2046 Sleep ((unsigned long)(delay * 1e3));
555#else 2047#else
556 struct timeval tv; 2048 struct timeval tv;
557 2049
558 tv.tv_sec = (time_t)delay; 2050 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 2051 /* something not guaranteed by newer posix versions, but guaranteed */
560 2052 /* by older ones */
2053 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 2054 select (0, 0, 0, 0, &tv);
562#endif 2055#endif
563 } 2056 }
564} 2057}
565 2058
566/*****************************************************************************/ 2059/*****************************************************************************/
567 2060
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2061#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 2062
570int inline_size 2063/* find a suitable new size for the given array, */
2064/* hopefully by rounding to a nice-to-malloc size */
2065inline_size int
571array_nextsize (int elem, int cur, int cnt) 2066array_nextsize (int elem, int cur, int cnt)
572{ 2067{
573 int ncur = cur + 1; 2068 int ncur = cur + 1;
574 2069
575 do 2070 do
576 ncur <<= 1; 2071 ncur <<= 1;
577 while (cnt > ncur); 2072 while (cnt > ncur);
578 2073
579 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2074 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
580 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2075 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
581 { 2076 {
582 ncur *= elem; 2077 ncur *= elem;
583 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2078 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
584 ncur = ncur - sizeof (void *) * 4; 2079 ncur = ncur - sizeof (void *) * 4;
… …
586 } 2081 }
587 2082
588 return ncur; 2083 return ncur;
589} 2084}
590 2085
591static noinline void * 2086ecb_noinline ecb_cold
2087static void *
592array_realloc (int elem, void *base, int *cur, int cnt) 2088array_realloc (int elem, void *base, int *cur, int cnt)
593{ 2089{
594 *cur = array_nextsize (elem, *cur, cnt); 2090 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 2091 return ev_realloc (base, elem * *cur);
596} 2092}
597 2093
2094#define array_needsize_noinit(base,offset,count)
2095
2096#define array_needsize_zerofill(base,offset,count) \
2097 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
2098
598#define array_needsize(type,base,cur,cnt,init) \ 2099#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 2100 if (ecb_expect_false ((cnt) > (cur))) \
600 { \ 2101 { \
601 int ocur_ = (cur); \ 2102 ecb_unused int ocur_ = (cur); \
602 (base) = (type *)array_realloc \ 2103 (base) = (type *)array_realloc \
603 (sizeof (type), (base), &(cur), (cnt)); \ 2104 (sizeof (type), (base), &(cur), (cnt)); \
604 init ((base) + (ocur_), (cur) - ocur_); \ 2105 init ((base), ocur_, ((cur) - ocur_)); \
605 } 2106 }
606 2107
607#if 0 2108#if 0
608#define array_slim(type,stem) \ 2109#define array_slim(type,stem) \
609 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2110 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 2114 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 2115 }
615#endif 2116#endif
616 2117
617#define array_free(stem, idx) \ 2118#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 2119 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 2120
620/*****************************************************************************/ 2121/*****************************************************************************/
621 2122
622void noinline 2123/* dummy callback for pending events */
2124ecb_noinline
2125static void
2126pendingcb (EV_P_ ev_prepare *w, int revents)
2127{
2128}
2129
2130ecb_noinline
2131void
623ev_feed_event (EV_P_ void *w, int revents) 2132ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
624{ 2133{
625 W w_ = (W)w; 2134 W w_ = (W)w;
626 int pri = ABSPRI (w_); 2135 int pri = ABSPRI (w_);
627 2136
628 if (expect_false (w_->pending)) 2137 if (ecb_expect_false (w_->pending))
629 pendings [pri][w_->pending - 1].events |= revents; 2138 pendings [pri][w_->pending - 1].events |= revents;
630 else 2139 else
631 { 2140 {
632 w_->pending = ++pendingcnt [pri]; 2141 w_->pending = ++pendingcnt [pri];
633 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2142 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
634 pendings [pri][w_->pending - 1].w = w_; 2143 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 2144 pendings [pri][w_->pending - 1].events = revents;
636 } 2145 }
637}
638 2146
639void inline_speed 2147 pendingpri = NUMPRI - 1;
2148}
2149
2150inline_speed void
2151feed_reverse (EV_P_ W w)
2152{
2153 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
2154 rfeeds [rfeedcnt++] = w;
2155}
2156
2157inline_size void
2158feed_reverse_done (EV_P_ int revents)
2159{
2160 do
2161 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
2162 while (rfeedcnt);
2163}
2164
2165inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 2166queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 2167{
642 int i; 2168 int i;
643 2169
644 for (i = 0; i < eventcnt; ++i) 2170 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 2171 ev_feed_event (EV_A_ events [i], type);
646} 2172}
647 2173
648/*****************************************************************************/ 2174/*****************************************************************************/
649 2175
650void inline_size 2176inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 2177fd_event_nocheck (EV_P_ int fd, int revents)
665{ 2178{
666 ANFD *anfd = anfds + fd; 2179 ANFD *anfd = anfds + fd;
667 ev_io *w; 2180 ev_io *w;
668 2181
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2182 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 2186 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 2187 ev_feed_event (EV_A_ (W)w, ev);
675 } 2188 }
676} 2189}
677 2190
678void 2191/* do not submit kernel events for fds that have reify set */
2192/* because that means they changed while we were polling for new events */
2193inline_speed void
679ev_feed_fd_event (EV_P_ int fd, int revents) 2194fd_event (EV_P_ int fd, int revents)
2195{
2196 ANFD *anfd = anfds + fd;
2197
2198 if (ecb_expect_true (!anfd->reify))
2199 fd_event_nocheck (EV_A_ fd, revents);
2200}
2201
2202void
2203ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
680{ 2204{
681 if (fd >= 0 && fd < anfdmax) 2205 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
683} 2207}
684 2208
685void inline_size 2209/* make sure the external fd watch events are in-sync */
2210/* with the kernel/libev internal state */
2211inline_size void
686fd_reify (EV_P) 2212fd_reify (EV_P)
687{ 2213{
688 int i; 2214 int i;
2215
2216#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2217 for (i = 0; i < fdchangecnt; ++i)
2218 {
2219 int fd = fdchanges [i];
2220 ANFD *anfd = anfds + fd;
2221
2222 if (anfd->reify & EV__IOFDSET && anfd->head)
2223 {
2224 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2225
2226 if (handle != anfd->handle)
2227 {
2228 unsigned long arg;
2229
2230 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2231
2232 /* handle changed, but fd didn't - we need to do it in two steps */
2233 backend_modify (EV_A_ fd, anfd->events, 0);
2234 anfd->events = 0;
2235 anfd->handle = handle;
2236 }
2237 }
2238 }
2239#endif
689 2240
690 for (i = 0; i < fdchangecnt; ++i) 2241 for (i = 0; i < fdchangecnt; ++i)
691 { 2242 {
692 int fd = fdchanges [i]; 2243 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 2244 ANFD *anfd = anfds + fd;
694 ev_io *w; 2245 ev_io *w;
695 2246
696 unsigned char events = 0; 2247 unsigned char o_events = anfd->events;
2248 unsigned char o_reify = anfd->reify;
697 2249
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2250 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 2251
701#if EV_SELECT_IS_WINSOCKET 2252 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
702 if (events)
703 { 2253 {
704 unsigned long argp; 2254 anfd->events = 0;
705 #ifdef EV_FD_TO_WIN32_HANDLE 2255
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2256 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
707 #else 2257 anfd->events |= (unsigned char)w->events;
708 anfd->handle = _get_osfhandle (fd); 2258
709 #endif 2259 if (o_events != anfd->events)
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 2260 o_reify = EV__IOFDSET; /* actually |= */
711 } 2261 }
712#endif
713 2262
714 { 2263 if (o_reify & EV__IOFDSET)
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
718 anfd->reify = 0;
719 anfd->events = events;
720
721 if (o_events != events || o_reify & EV_IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 2264 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 2265 }
725 2266
726 fdchangecnt = 0; 2267 fdchangecnt = 0;
727} 2268}
728 2269
2270/* something about the given fd changed */
729void inline_size 2271inline_size
2272void
730fd_change (EV_P_ int fd, int flags) 2273fd_change (EV_P_ int fd, int flags)
731{ 2274{
732 unsigned char reify = anfds [fd].reify; 2275 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 2276 anfds [fd].reify |= flags;
734 2277
735 if (expect_true (!reify)) 2278 if (ecb_expect_true (!reify))
736 { 2279 {
737 ++fdchangecnt; 2280 ++fdchangecnt;
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2281 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
739 fdchanges [fdchangecnt - 1] = fd; 2282 fdchanges [fdchangecnt - 1] = fd;
740 } 2283 }
741} 2284}
742 2285
743void inline_speed 2286/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
2287inline_speed ecb_cold void
744fd_kill (EV_P_ int fd) 2288fd_kill (EV_P_ int fd)
745{ 2289{
746 ev_io *w; 2290 ev_io *w;
747 2291
748 while ((w = (ev_io *)anfds [fd].head)) 2292 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 2294 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2295 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 2296 }
753} 2297}
754 2298
755int inline_size 2299/* check whether the given fd is actually valid, for error recovery */
2300inline_size ecb_cold int
756fd_valid (int fd) 2301fd_valid (int fd)
757{ 2302{
758#ifdef _WIN32 2303#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 2304 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 2305#else
761 return fcntl (fd, F_GETFD) != -1; 2306 return fcntl (fd, F_GETFD) != -1;
762#endif 2307#endif
763} 2308}
764 2309
765/* called on EBADF to verify fds */ 2310/* called on EBADF to verify fds */
766static void noinline 2311ecb_noinline ecb_cold
2312static void
767fd_ebadf (EV_P) 2313fd_ebadf (EV_P)
768{ 2314{
769 int fd; 2315 int fd;
770 2316
771 for (fd = 0; fd < anfdmax; ++fd) 2317 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 2318 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 2319 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 2320 fd_kill (EV_A_ fd);
775} 2321}
776 2322
777/* called on ENOMEM in select/poll to kill some fds and retry */ 2323/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 2324ecb_noinline ecb_cold
2325static void
779fd_enomem (EV_P) 2326fd_enomem (EV_P)
780{ 2327{
781 int fd; 2328 int fd;
782 2329
783 for (fd = anfdmax; fd--; ) 2330 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 2331 if (anfds [fd].events)
785 { 2332 {
786 fd_kill (EV_A_ fd); 2333 fd_kill (EV_A_ fd);
787 return; 2334 break;
788 } 2335 }
789} 2336}
790 2337
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 2338/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 2339ecb_noinline
2340static void
793fd_rearm_all (EV_P) 2341fd_rearm_all (EV_P)
794{ 2342{
795 int fd; 2343 int fd;
796 2344
797 for (fd = 0; fd < anfdmax; ++fd) 2345 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 2346 if (anfds [fd].events)
799 { 2347 {
800 anfds [fd].events = 0; 2348 anfds [fd].events = 0;
2349 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 2350 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 2351 }
803} 2352}
804 2353
2354/* used to prepare libev internal fd's */
2355/* this is not fork-safe */
2356inline_speed void
2357fd_intern (int fd)
2358{
2359#ifdef _WIN32
2360 unsigned long arg = 1;
2361 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2362#else
2363 fcntl (fd, F_SETFD, FD_CLOEXEC);
2364 fcntl (fd, F_SETFL, O_NONBLOCK);
2365#endif
2366}
2367
805/*****************************************************************************/ 2368/*****************************************************************************/
806 2369
807/* 2370/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not 2371 * the heap functions want a real array index. array index 0 is guaranteed to not
809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2372 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree. 2373 * the branching factor of the d-tree.
811 */ 2374 */
812 2375
813/* 2376/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 2385#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 2386#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 2387#define UPHEAP_DONE(p,k) ((p) == (k))
825 2388
826/* away from the root */ 2389/* away from the root */
827void inline_speed 2390inline_speed void
828downheap (ANHE *heap, int N, int k) 2391downheap (ANHE *heap, int N, int k)
829{ 2392{
830 ANHE he = heap [k]; 2393 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 2394 ANHE *E = heap + N + HEAP0;
832 2395
… …
835 ev_tstamp minat; 2398 ev_tstamp minat;
836 ANHE *minpos; 2399 ANHE *minpos;
837 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2400 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
838 2401
839 /* find minimum child */ 2402 /* find minimum child */
840 if (expect_true (pos + DHEAP - 1 < E)) 2403 if (ecb_expect_true (pos + DHEAP - 1 < E))
841 { 2404 {
842 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2405 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
843 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2406 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
844 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2407 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
845 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2408 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
872#define HEAP0 1 2435#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 2436#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 2437#define UPHEAP_DONE(p,k) (!(p))
875 2438
876/* away from the root */ 2439/* away from the root */
877void inline_speed 2440inline_speed void
878downheap (ANHE *heap, int N, int k) 2441downheap (ANHE *heap, int N, int k)
879{ 2442{
880 ANHE he = heap [k]; 2443 ANHE he = heap [k];
881 2444
882 for (;;) 2445 for (;;)
883 { 2446 {
884 int c = k << 1; 2447 int c = k << 1;
885 2448
886 if (c > N + HEAP0 - 1) 2449 if (c >= N + HEAP0)
887 break; 2450 break;
888 2451
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2452 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 2453 ? 1 : 0;
891 2454
… …
902 ev_active (ANHE_w (he)) = k; 2465 ev_active (ANHE_w (he)) = k;
903} 2466}
904#endif 2467#endif
905 2468
906/* towards the root */ 2469/* towards the root */
907void inline_speed 2470inline_speed void
908upheap (ANHE *heap, int k) 2471upheap (ANHE *heap, int k)
909{ 2472{
910 ANHE he = heap [k]; 2473 ANHE he = heap [k];
911 2474
912 for (;;) 2475 for (;;)
… …
923 2486
924 heap [k] = he; 2487 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 2488 ev_active (ANHE_w (he)) = k;
926} 2489}
927 2490
928void inline_size 2491/* move an element suitably so it is in a correct place */
2492inline_size void
929adjustheap (ANHE *heap, int N, int k) 2493adjustheap (ANHE *heap, int N, int k)
930{ 2494{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2495 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 2496 upheap (heap, k);
933 else 2497 else
934 downheap (heap, N, k); 2498 downheap (heap, N, k);
935} 2499}
936 2500
937/* rebuild the heap: this function is used only once and executed rarely */ 2501/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 2502inline_size void
939reheap (ANHE *heap, int N) 2503reheap (ANHE *heap, int N)
940{ 2504{
941 int i; 2505 int i;
942 2506
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 2507 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
946 upheap (heap, i + HEAP0); 2510 upheap (heap, i + HEAP0);
947} 2511}
948 2512
949/*****************************************************************************/ 2513/*****************************************************************************/
950 2514
2515/* associate signal watchers to a signal signal */
951typedef struct 2516typedef struct
952{ 2517{
2518 EV_ATOMIC_T pending;
2519#if EV_MULTIPLICITY
2520 EV_P;
2521#endif
953 WL head; 2522 WL head;
954 EV_ATOMIC_T gotsig;
955} ANSIG; 2523} ANSIG;
956 2524
957static ANSIG *signals; 2525static ANSIG signals [EV_NSIG - 1];
958static int signalmax;
959
960static EV_ATOMIC_T gotsig;
961
962void inline_size
963signals_init (ANSIG *base, int count)
964{
965 while (count--)
966 {
967 base->head = 0;
968 base->gotsig = 0;
969
970 ++base;
971 }
972}
973 2526
974/*****************************************************************************/ 2527/*****************************************************************************/
975 2528
976void inline_speed 2529#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
977fd_intern (int fd)
978{
979#ifdef _WIN32
980 int arg = 1;
981 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
982#else
983 fcntl (fd, F_SETFD, FD_CLOEXEC);
984 fcntl (fd, F_SETFL, O_NONBLOCK);
985#endif
986}
987 2530
988static void noinline 2531ecb_noinline ecb_cold
2532static void
989evpipe_init (EV_P) 2533evpipe_init (EV_P)
990{ 2534{
991 if (!ev_is_active (&pipeev)) 2535 if (!ev_is_active (&pipe_w))
2536 {
2537 int fds [2];
2538
2539# if EV_USE_EVENTFD
2540 fds [0] = -1;
2541 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2542 if (fds [1] < 0 && errno == EINVAL)
2543 fds [1] = eventfd (0, 0);
2544
2545 if (fds [1] < 0)
2546# endif
2547 {
2548 while (pipe (fds))
2549 ev_syserr ("(libev) error creating signal/async pipe");
2550
2551 fd_intern (fds [0]);
2552 }
2553
2554 evpipe [0] = fds [0];
2555
2556 if (evpipe [1] < 0)
2557 evpipe [1] = fds [1]; /* first call, set write fd */
2558 else
2559 {
2560 /* on subsequent calls, do not change evpipe [1] */
2561 /* so that evpipe_write can always rely on its value. */
2562 /* this branch does not do anything sensible on windows, */
2563 /* so must not be executed on windows */
2564
2565 dup2 (fds [1], evpipe [1]);
2566 close (fds [1]);
2567 }
2568
2569 fd_intern (evpipe [1]);
2570
2571 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2572 ev_io_start (EV_A_ &pipe_w);
2573 ev_unref (EV_A); /* watcher should not keep loop alive */
992 { 2574 }
2575}
2576
2577inline_speed void
2578evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2579{
2580 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2581
2582 if (ecb_expect_true (*flag))
2583 return;
2584
2585 *flag = 1;
2586 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2587
2588 pipe_write_skipped = 1;
2589
2590 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2591
2592 if (pipe_write_wanted)
2593 {
2594 int old_errno;
2595
2596 pipe_write_skipped = 0;
2597 ECB_MEMORY_FENCE_RELEASE;
2598
2599 old_errno = errno; /* save errno because write will clobber it */
2600
993#if EV_USE_EVENTFD 2601#if EV_USE_EVENTFD
994 if ((evfd = eventfd (0, 0)) >= 0) 2602 if (evpipe [0] < 0)
995 { 2603 {
996 evpipe [0] = -1; 2604 uint64_t counter = 1;
997 fd_intern (evfd); 2605 write (evpipe [1], &counter, sizeof (uint64_t));
998 ev_io_set (&pipeev, evfd, EV_READ);
999 } 2606 }
1000 else 2607 else
1001#endif 2608#endif
1002 { 2609 {
1003 while (pipe (evpipe)) 2610#ifdef _WIN32
1004 syserr ("(libev) error creating signal/async pipe"); 2611 WSABUF buf;
1005 2612 DWORD sent;
1006 fd_intern (evpipe [0]); 2613 buf.buf = (char *)&buf;
1007 fd_intern (evpipe [1]); 2614 buf.len = 1;
1008 ev_io_set (&pipeev, evpipe [0], EV_READ); 2615 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2616#else
2617 write (evpipe [1], &(evpipe [1]), 1);
2618#endif
1009 } 2619 }
1010 2620
1011 ev_io_start (EV_A_ &pipeev); 2621 errno = old_errno;
1012 ev_unref (EV_A); /* watcher should not keep loop alive */
1013 }
1014}
1015
1016void inline_size
1017evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1018{
1019 if (!*flag)
1020 { 2622 }
1021 int old_errno = errno; /* save errno because write might clobber it */ 2623}
1022 2624
1023 *flag = 1; 2625/* called whenever the libev signal pipe */
2626/* got some events (signal, async) */
2627static void
2628pipecb (EV_P_ ev_io *iow, int revents)
2629{
2630 int i;
1024 2631
2632 if (revents & EV_READ)
2633 {
1025#if EV_USE_EVENTFD 2634#if EV_USE_EVENTFD
1026 if (evfd >= 0) 2635 if (evpipe [0] < 0)
1027 { 2636 {
1028 uint64_t counter = 1; 2637 uint64_t counter;
1029 write (evfd, &counter, sizeof (uint64_t)); 2638 read (evpipe [1], &counter, sizeof (uint64_t));
1030 } 2639 }
1031 else 2640 else
1032#endif 2641#endif
1033 write (evpipe [1], &old_errno, 1); 2642 {
1034
1035 errno = old_errno;
1036 }
1037}
1038
1039static void
1040pipecb (EV_P_ ev_io *iow, int revents)
1041{
1042#if EV_USE_EVENTFD
1043 if (evfd >= 0)
1044 {
1045 uint64_t counter;
1046 read (evfd, &counter, sizeof (uint64_t));
1047 }
1048 else
1049#endif
1050 {
1051 char dummy; 2643 char dummy[4];
2644#ifdef _WIN32
2645 WSABUF buf;
2646 DWORD recvd;
2647 DWORD flags = 0;
2648 buf.buf = dummy;
2649 buf.len = sizeof (dummy);
2650 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2651#else
1052 read (evpipe [0], &dummy, 1); 2652 read (evpipe [0], &dummy, sizeof (dummy));
2653#endif
2654 }
2655 }
2656
2657 pipe_write_skipped = 0;
2658
2659 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2660
2661#if EV_SIGNAL_ENABLE
2662 if (sig_pending)
1053 } 2663 {
2664 sig_pending = 0;
1054 2665
1055 if (gotsig && ev_is_default_loop (EV_A)) 2666 ECB_MEMORY_FENCE;
1056 {
1057 int signum;
1058 gotsig = 0;
1059 2667
1060 for (signum = signalmax; signum--; ) 2668 for (i = EV_NSIG - 1; i--; )
1061 if (signals [signum].gotsig) 2669 if (ecb_expect_false (signals [i].pending))
1062 ev_feed_signal_event (EV_A_ signum + 1); 2670 ev_feed_signal_event (EV_A_ i + 1);
1063 } 2671 }
2672#endif
1064 2673
1065#if EV_ASYNC_ENABLE 2674#if EV_ASYNC_ENABLE
1066 if (gotasync) 2675 if (async_pending)
1067 { 2676 {
1068 int i; 2677 async_pending = 0;
1069 gotasync = 0; 2678
2679 ECB_MEMORY_FENCE;
1070 2680
1071 for (i = asynccnt; i--; ) 2681 for (i = asynccnt; i--; )
1072 if (asyncs [i]->sent) 2682 if (asyncs [i]->sent)
1073 { 2683 {
1074 asyncs [i]->sent = 0; 2684 asyncs [i]->sent = 0;
2685 ECB_MEMORY_FENCE_RELEASE;
1075 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2686 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1076 } 2687 }
1077 } 2688 }
1078#endif 2689#endif
1079} 2690}
1080 2691
1081/*****************************************************************************/ 2692/*****************************************************************************/
1082 2693
2694void
2695ev_feed_signal (int signum) EV_NOEXCEPT
2696{
2697#if EV_MULTIPLICITY
2698 EV_P;
2699 ECB_MEMORY_FENCE_ACQUIRE;
2700 EV_A = signals [signum - 1].loop;
2701
2702 if (!EV_A)
2703 return;
2704#endif
2705
2706 signals [signum - 1].pending = 1;
2707 evpipe_write (EV_A_ &sig_pending);
2708}
2709
1083static void 2710static void
1084ev_sighandler (int signum) 2711ev_sighandler (int signum)
1085{ 2712{
2713#ifdef _WIN32
2714 signal (signum, ev_sighandler);
2715#endif
2716
2717 ev_feed_signal (signum);
2718}
2719
2720ecb_noinline
2721void
2722ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2723{
2724 WL w;
2725
2726 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2727 return;
2728
2729 --signum;
2730
1086#if EV_MULTIPLICITY 2731#if EV_MULTIPLICITY
1087 struct ev_loop *loop = &default_loop_struct; 2732 /* it is permissible to try to feed a signal to the wrong loop */
1088#endif 2733 /* or, likely more useful, feeding a signal nobody is waiting for */
1089 2734
1090#if _WIN32 2735 if (ecb_expect_false (signals [signum].loop != EV_A))
1091 signal (signum, ev_sighandler);
1092#endif
1093
1094 signals [signum - 1].gotsig = 1;
1095 evpipe_write (EV_A_ &gotsig);
1096}
1097
1098void noinline
1099ev_feed_signal_event (EV_P_ int signum)
1100{
1101 WL w;
1102
1103#if EV_MULTIPLICITY
1104 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1105#endif
1106
1107 --signum;
1108
1109 if (signum < 0 || signum >= signalmax)
1110 return; 2736 return;
2737#endif
1111 2738
1112 signals [signum].gotsig = 0; 2739 signals [signum].pending = 0;
2740 ECB_MEMORY_FENCE_RELEASE;
1113 2741
1114 for (w = signals [signum].head; w; w = w->next) 2742 for (w = signals [signum].head; w; w = w->next)
1115 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2743 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1116} 2744}
1117 2745
2746#if EV_USE_SIGNALFD
2747static void
2748sigfdcb (EV_P_ ev_io *iow, int revents)
2749{
2750 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2751
2752 for (;;)
2753 {
2754 ssize_t res = read (sigfd, si, sizeof (si));
2755
2756 /* not ISO-C, as res might be -1, but works with SuS */
2757 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2758 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2759
2760 if (res < (ssize_t)sizeof (si))
2761 break;
2762 }
2763}
2764#endif
2765
2766#endif
2767
1118/*****************************************************************************/ 2768/*****************************************************************************/
1119 2769
2770#if EV_CHILD_ENABLE
1120static WL childs [EV_PID_HASHSIZE]; 2771static WL childs [EV_PID_HASHSIZE];
1121
1122#ifndef _WIN32
1123 2772
1124static ev_signal childev; 2773static ev_signal childev;
1125 2774
1126#ifndef WIFCONTINUED 2775#ifndef WIFCONTINUED
1127# define WIFCONTINUED(status) 0 2776# define WIFCONTINUED(status) 0
1128#endif 2777#endif
1129 2778
1130void inline_speed 2779/* handle a single child status event */
2780inline_speed void
1131child_reap (EV_P_ int chain, int pid, int status) 2781child_reap (EV_P_ int chain, int pid, int status)
1132{ 2782{
1133 ev_child *w; 2783 ev_child *w;
1134 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2784 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1135 2785
1136 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2786 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1137 { 2787 {
1138 if ((w->pid == pid || !w->pid) 2788 if ((w->pid == pid || !w->pid)
1139 && (!traced || (w->flags & 1))) 2789 && (!traced || (w->flags & 1)))
1140 { 2790 {
1141 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2791 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1148 2798
1149#ifndef WCONTINUED 2799#ifndef WCONTINUED
1150# define WCONTINUED 0 2800# define WCONTINUED 0
1151#endif 2801#endif
1152 2802
2803/* called on sigchld etc., calls waitpid */
1153static void 2804static void
1154childcb (EV_P_ ev_signal *sw, int revents) 2805childcb (EV_P_ ev_signal *sw, int revents)
1155{ 2806{
1156 int pid, status; 2807 int pid, status;
1157 2808
… …
1165 /* make sure we are called again until all children have been reaped */ 2816 /* make sure we are called again until all children have been reaped */
1166 /* we need to do it this way so that the callback gets called before we continue */ 2817 /* we need to do it this way so that the callback gets called before we continue */
1167 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2818 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1168 2819
1169 child_reap (EV_A_ pid, pid, status); 2820 child_reap (EV_A_ pid, pid, status);
1170 if (EV_PID_HASHSIZE > 1) 2821 if ((EV_PID_HASHSIZE) > 1)
1171 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2822 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1172} 2823}
1173 2824
1174#endif 2825#endif
1175 2826
1176/*****************************************************************************/ 2827/*****************************************************************************/
1177 2828
2829#if EV_USE_IOCP
2830# include "ev_iocp.c"
2831#endif
1178#if EV_USE_PORT 2832#if EV_USE_PORT
1179# include "ev_port.c" 2833# include "ev_port.c"
1180#endif 2834#endif
1181#if EV_USE_KQUEUE 2835#if EV_USE_KQUEUE
1182# include "ev_kqueue.c" 2836# include "ev_kqueue.c"
1183#endif 2837#endif
1184#if EV_USE_EPOLL 2838#if EV_USE_EPOLL
1185# include "ev_epoll.c" 2839# include "ev_epoll.c"
1186#endif 2840#endif
2841#if EV_USE_LINUXAIO
2842# include "ev_linuxaio.c"
2843#endif
2844#if EV_USE_IOURING
2845# include "ev_iouring.c"
2846#endif
1187#if EV_USE_POLL 2847#if EV_USE_POLL
1188# include "ev_poll.c" 2848# include "ev_poll.c"
1189#endif 2849#endif
1190#if EV_USE_SELECT 2850#if EV_USE_SELECT
1191# include "ev_select.c" 2851# include "ev_select.c"
1192#endif 2852#endif
1193 2853
1194int 2854ecb_cold int
1195ev_version_major (void) 2855ev_version_major (void) EV_NOEXCEPT
1196{ 2856{
1197 return EV_VERSION_MAJOR; 2857 return EV_VERSION_MAJOR;
1198} 2858}
1199 2859
1200int 2860ecb_cold int
1201ev_version_minor (void) 2861ev_version_minor (void) EV_NOEXCEPT
1202{ 2862{
1203 return EV_VERSION_MINOR; 2863 return EV_VERSION_MINOR;
1204} 2864}
1205 2865
1206/* return true if we are running with elevated privileges and should ignore env variables */ 2866/* return true if we are running with elevated privileges and should ignore env variables */
1207int inline_size 2867inline_size ecb_cold int
1208enable_secure (void) 2868enable_secure (void)
1209{ 2869{
1210#ifdef _WIN32 2870#ifdef _WIN32
1211 return 0; 2871 return 0;
1212#else 2872#else
1213 return getuid () != geteuid () 2873 return getuid () != geteuid ()
1214 || getgid () != getegid (); 2874 || getgid () != getegid ();
1215#endif 2875#endif
1216} 2876}
1217 2877
2878ecb_cold
1218unsigned int 2879unsigned int
1219ev_supported_backends (void) 2880ev_supported_backends (void) EV_NOEXCEPT
1220{ 2881{
1221 unsigned int flags = 0; 2882 unsigned int flags = 0;
1222 2883
1223 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1224 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2885 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1225 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2886 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2887 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2888 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1226 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2889 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1227 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2890 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1228 2891
1229 return flags; 2892 return flags;
1230} 2893}
1231 2894
2895ecb_cold
1232unsigned int 2896unsigned int
1233ev_recommended_backends (void) 2897ev_recommended_backends (void) EV_NOEXCEPT
1234{ 2898{
1235 unsigned int flags = ev_supported_backends (); 2899 unsigned int flags = ev_supported_backends ();
1236 2900
1237#ifndef __NetBSD__ 2901#ifndef __NetBSD__
1238 /* kqueue is borked on everything but netbsd apparently */ 2902 /* kqueue is borked on everything but netbsd apparently */
1239 /* it usually doesn't work correctly on anything but sockets and pipes */ 2903 /* it usually doesn't work correctly on anything but sockets and pipes */
1240 flags &= ~EVBACKEND_KQUEUE; 2904 flags &= ~EVBACKEND_KQUEUE;
1241#endif 2905#endif
1242#ifdef __APPLE__ 2906#ifdef __APPLE__
1243 // flags &= ~EVBACKEND_KQUEUE; for documentation 2907 /* only select works correctly on that "unix-certified" platform */
2908 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2909 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2910#endif
2911#ifdef __FreeBSD__
2912 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2913#endif
2914
2915 /* TODO: linuxaio is very experimental */
2916#if !EV_RECOMMEND_LINUXAIO
2917 flags &= ~EVBACKEND_LINUXAIO;
2918#endif
2919 /* TODO: linuxaio is super experimental */
2920#if !EV_RECOMMEND_IOURING
1244 flags &= ~EVBACKEND_POLL; 2921 flags &= ~EVBACKEND_IOURING;
1245#endif 2922#endif
1246 2923
1247 return flags; 2924 return flags;
1248} 2925}
1249 2926
2927ecb_cold
1250unsigned int 2928unsigned int
1251ev_embeddable_backends (void) 2929ev_embeddable_backends (void) EV_NOEXCEPT
1252{ 2930{
1253 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2931 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1254 2932
1255 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2933 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1256 /* please fix it and tell me how to detect the fix */ 2934 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1257 flags &= ~EVBACKEND_EPOLL; 2935 flags &= ~EVBACKEND_EPOLL;
2936
2937 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2938
2939 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2940 * because our backend_fd is the epoll fd we need as fallback.
2941 * if the kernel ever is fixed, this might change...
2942 */
1258 2943
1259 return flags; 2944 return flags;
1260} 2945}
1261 2946
1262unsigned int 2947unsigned int
1263ev_backend (EV_P) 2948ev_backend (EV_P) EV_NOEXCEPT
1264{ 2949{
1265 return backend; 2950 return backend;
1266} 2951}
1267 2952
2953#if EV_FEATURE_API
1268unsigned int 2954unsigned int
1269ev_loop_count (EV_P) 2955ev_iteration (EV_P) EV_NOEXCEPT
1270{ 2956{
1271 return loop_count; 2957 return loop_count;
1272} 2958}
1273 2959
2960unsigned int
2961ev_depth (EV_P) EV_NOEXCEPT
2962{
2963 return loop_depth;
2964}
2965
1274void 2966void
1275ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2967ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1276{ 2968{
1277 io_blocktime = interval; 2969 io_blocktime = interval;
1278} 2970}
1279 2971
1280void 2972void
1281ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2973ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1282{ 2974{
1283 timeout_blocktime = interval; 2975 timeout_blocktime = interval;
1284} 2976}
1285 2977
1286static void noinline 2978void
2979ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2980{
2981 userdata = data;
2982}
2983
2984void *
2985ev_userdata (EV_P) EV_NOEXCEPT
2986{
2987 return userdata;
2988}
2989
2990void
2991ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2992{
2993 invoke_cb = invoke_pending_cb;
2994}
2995
2996void
2997ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2998{
2999 release_cb = release;
3000 acquire_cb = acquire;
3001}
3002#endif
3003
3004/* initialise a loop structure, must be zero-initialised */
3005ecb_noinline ecb_cold
3006static void
1287loop_init (EV_P_ unsigned int flags) 3007loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1288{ 3008{
1289 if (!backend) 3009 if (!backend)
1290 { 3010 {
3011 origflags = flags;
3012
3013#if EV_USE_REALTIME
3014 if (!have_realtime)
3015 {
3016 struct timespec ts;
3017
3018 if (!clock_gettime (CLOCK_REALTIME, &ts))
3019 have_realtime = 1;
3020 }
3021#endif
3022
1291#if EV_USE_MONOTONIC 3023#if EV_USE_MONOTONIC
3024 if (!have_monotonic)
1292 { 3025 {
1293 struct timespec ts; 3026 struct timespec ts;
3027
1294 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3028 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1295 have_monotonic = 1; 3029 have_monotonic = 1;
1296 } 3030 }
1297#endif
1298
1299 ev_rt_now = ev_time ();
1300 mn_now = get_clock ();
1301 now_floor = mn_now;
1302 rtmn_diff = ev_rt_now - mn_now;
1303
1304 io_blocktime = 0.;
1305 timeout_blocktime = 0.;
1306 backend = 0;
1307 backend_fd = -1;
1308 gotasync = 0;
1309#if EV_USE_INOTIFY
1310 fs_fd = -2;
1311#endif 3031#endif
1312 3032
1313 /* pid check not overridable via env */ 3033 /* pid check not overridable via env */
1314#ifndef _WIN32 3034#ifndef _WIN32
1315 if (flags & EVFLAG_FORKCHECK) 3035 if (flags & EVFLAG_FORKCHECK)
… …
1319 if (!(flags & EVFLAG_NOENV) 3039 if (!(flags & EVFLAG_NOENV)
1320 && !enable_secure () 3040 && !enable_secure ()
1321 && getenv ("LIBEV_FLAGS")) 3041 && getenv ("LIBEV_FLAGS"))
1322 flags = atoi (getenv ("LIBEV_FLAGS")); 3042 flags = atoi (getenv ("LIBEV_FLAGS"));
1323 3043
1324 if (!(flags & 0x0000ffffU)) 3044 ev_rt_now = ev_time ();
3045 mn_now = get_clock ();
3046 now_floor = mn_now;
3047 rtmn_diff = ev_rt_now - mn_now;
3048#if EV_FEATURE_API
3049 invoke_cb = ev_invoke_pending;
3050#endif
3051
3052 io_blocktime = 0.;
3053 timeout_blocktime = 0.;
3054 backend = 0;
3055 backend_fd = -1;
3056 sig_pending = 0;
3057#if EV_ASYNC_ENABLE
3058 async_pending = 0;
3059#endif
3060 pipe_write_skipped = 0;
3061 pipe_write_wanted = 0;
3062 evpipe [0] = -1;
3063 evpipe [1] = -1;
3064#if EV_USE_INOTIFY
3065 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3066#endif
3067#if EV_USE_SIGNALFD
3068 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3069#endif
3070
3071 if (!(flags & EVBACKEND_MASK))
1325 flags |= ev_recommended_backends (); 3072 flags |= ev_recommended_backends ();
1326 3073
3074#if EV_USE_IOCP
3075 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3076#endif
1327#if EV_USE_PORT 3077#if EV_USE_PORT
1328 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3078 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1329#endif 3079#endif
1330#if EV_USE_KQUEUE 3080#if EV_USE_KQUEUE
1331 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3081 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3082#endif
3083#if EV_USE_IOURING
3084 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3085#endif
3086#if EV_USE_LINUXAIO
3087 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1332#endif 3088#endif
1333#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
1334 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3090 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1335#endif 3091#endif
1336#if EV_USE_POLL 3092#if EV_USE_POLL
1337 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3093 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1338#endif 3094#endif
1339#if EV_USE_SELECT 3095#if EV_USE_SELECT
1340 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3096 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1341#endif 3097#endif
1342 3098
3099 ev_prepare_init (&pending_w, pendingcb);
3100
3101#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 ev_init (&pipeev, pipecb); 3102 ev_init (&pipe_w, pipecb);
1344 ev_set_priority (&pipeev, EV_MAXPRI); 3103 ev_set_priority (&pipe_w, EV_MAXPRI);
3104#endif
1345 } 3105 }
1346} 3106}
1347 3107
1348static void noinline 3108/* free up a loop structure */
3109ecb_cold
3110void
1349loop_destroy (EV_P) 3111ev_loop_destroy (EV_P)
1350{ 3112{
1351 int i; 3113 int i;
1352 3114
3115#if EV_MULTIPLICITY
3116 /* mimic free (0) */
3117 if (!EV_A)
3118 return;
3119#endif
3120
3121#if EV_CLEANUP_ENABLE
3122 /* queue cleanup watchers (and execute them) */
3123 if (ecb_expect_false (cleanupcnt))
3124 {
3125 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3126 EV_INVOKE_PENDING;
3127 }
3128#endif
3129
3130#if EV_CHILD_ENABLE
3131 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3132 {
3133 ev_ref (EV_A); /* child watcher */
3134 ev_signal_stop (EV_A_ &childev);
3135 }
3136#endif
3137
1353 if (ev_is_active (&pipeev)) 3138 if (ev_is_active (&pipe_w))
1354 { 3139 {
1355 ev_ref (EV_A); /* signal watcher */ 3140 /*ev_ref (EV_A);*/
1356 ev_io_stop (EV_A_ &pipeev); 3141 /*ev_io_stop (EV_A_ &pipe_w);*/
1357 3142
3143 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3144 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3145 }
3146
1358#if EV_USE_EVENTFD 3147#if EV_USE_SIGNALFD
1359 if (evfd >= 0) 3148 if (ev_is_active (&sigfd_w))
1360 close (evfd); 3149 close (sigfd);
1361#endif 3150#endif
1362
1363 if (evpipe [0] >= 0)
1364 {
1365 close (evpipe [0]);
1366 close (evpipe [1]);
1367 }
1368 }
1369 3151
1370#if EV_USE_INOTIFY 3152#if EV_USE_INOTIFY
1371 if (fs_fd >= 0) 3153 if (fs_fd >= 0)
1372 close (fs_fd); 3154 close (fs_fd);
1373#endif 3155#endif
1374 3156
1375 if (backend_fd >= 0) 3157 if (backend_fd >= 0)
1376 close (backend_fd); 3158 close (backend_fd);
1377 3159
3160#if EV_USE_IOCP
3161 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3162#endif
1378#if EV_USE_PORT 3163#if EV_USE_PORT
1379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3164 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1380#endif 3165#endif
1381#if EV_USE_KQUEUE 3166#if EV_USE_KQUEUE
1382 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3167 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3168#endif
3169#if EV_USE_IOURING
3170 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3171#endif
3172#if EV_USE_LINUXAIO
3173 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1383#endif 3174#endif
1384#if EV_USE_EPOLL 3175#if EV_USE_EPOLL
1385 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3176 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1386#endif 3177#endif
1387#if EV_USE_POLL 3178#if EV_USE_POLL
1388 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3179 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1389#endif 3180#endif
1390#if EV_USE_SELECT 3181#if EV_USE_SELECT
1391 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3182 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1392#endif 3183#endif
1393 3184
1394 for (i = NUMPRI; i--; ) 3185 for (i = NUMPRI; i--; )
1395 { 3186 {
1396 array_free (pending, [i]); 3187 array_free (pending, [i]);
1397#if EV_IDLE_ENABLE 3188#if EV_IDLE_ENABLE
1398 array_free (idle, [i]); 3189 array_free (idle, [i]);
1399#endif 3190#endif
1400 } 3191 }
1401 3192
1402 ev_free (anfds); anfdmax = 0; 3193 ev_free (anfds); anfds = 0; anfdmax = 0;
1403 3194
1404 /* have to use the microsoft-never-gets-it-right macro */ 3195 /* have to use the microsoft-never-gets-it-right macro */
3196 array_free (rfeed, EMPTY);
1405 array_free (fdchange, EMPTY); 3197 array_free (fdchange, EMPTY);
1406 array_free (timer, EMPTY); 3198 array_free (timer, EMPTY);
1407#if EV_PERIODIC_ENABLE 3199#if EV_PERIODIC_ENABLE
1408 array_free (periodic, EMPTY); 3200 array_free (periodic, EMPTY);
1409#endif 3201#endif
1410#if EV_FORK_ENABLE 3202#if EV_FORK_ENABLE
1411 array_free (fork, EMPTY); 3203 array_free (fork, EMPTY);
1412#endif 3204#endif
3205#if EV_CLEANUP_ENABLE
3206 array_free (cleanup, EMPTY);
3207#endif
1413 array_free (prepare, EMPTY); 3208 array_free (prepare, EMPTY);
1414 array_free (check, EMPTY); 3209 array_free (check, EMPTY);
1415#if EV_ASYNC_ENABLE 3210#if EV_ASYNC_ENABLE
1416 array_free (async, EMPTY); 3211 array_free (async, EMPTY);
1417#endif 3212#endif
1418 3213
1419 backend = 0; 3214 backend = 0;
3215
3216#if EV_MULTIPLICITY
3217 if (ev_is_default_loop (EV_A))
3218#endif
3219 ev_default_loop_ptr = 0;
3220#if EV_MULTIPLICITY
3221 else
3222 ev_free (EV_A);
3223#endif
1420} 3224}
1421 3225
1422#if EV_USE_INOTIFY 3226#if EV_USE_INOTIFY
1423void inline_size infy_fork (EV_P); 3227inline_size void infy_fork (EV_P);
1424#endif 3228#endif
1425 3229
1426void inline_size 3230inline_size void
1427loop_fork (EV_P) 3231loop_fork (EV_P)
1428{ 3232{
1429#if EV_USE_PORT 3233#if EV_USE_PORT
1430 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3234 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1431#endif 3235#endif
1432#if EV_USE_KQUEUE 3236#if EV_USE_KQUEUE
1433 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3237 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3238#endif
3239#if EV_USE_IOURING
3240 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3241#endif
3242#if EV_USE_LINUXAIO
3243 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1434#endif 3244#endif
1435#if EV_USE_EPOLL 3245#if EV_USE_EPOLL
1436 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3246 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1437#endif 3247#endif
1438#if EV_USE_INOTIFY 3248#if EV_USE_INOTIFY
1439 infy_fork (EV_A); 3249 infy_fork (EV_A);
1440#endif 3250#endif
1441 3251
1442 if (ev_is_active (&pipeev)) 3252#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3253 if (ev_is_active (&pipe_w) && postfork != 2)
1443 { 3254 {
1444 /* this "locks" the handlers against writing to the pipe */ 3255 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1445 /* while we modify the fd vars */
1446 gotsig = 1;
1447#if EV_ASYNC_ENABLE
1448 gotasync = 1;
1449#endif
1450 3256
1451 ev_ref (EV_A); 3257 ev_ref (EV_A);
1452 ev_io_stop (EV_A_ &pipeev); 3258 ev_io_stop (EV_A_ &pipe_w);
1453
1454#if EV_USE_EVENTFD
1455 if (evfd >= 0)
1456 close (evfd);
1457#endif
1458 3259
1459 if (evpipe [0] >= 0) 3260 if (evpipe [0] >= 0)
1460 { 3261 EV_WIN32_CLOSE_FD (evpipe [0]);
1461 close (evpipe [0]);
1462 close (evpipe [1]);
1463 }
1464 3262
1465 evpipe_init (EV_A); 3263 evpipe_init (EV_A);
1466 /* now iterate over everything, in case we missed something */ 3264 /* iterate over everything, in case we missed something before */
1467 pipecb (EV_A_ &pipeev, EV_READ); 3265 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1468 } 3266 }
3267#endif
1469 3268
1470 postfork = 0; 3269 postfork = 0;
1471} 3270}
1472 3271
1473#if EV_MULTIPLICITY 3272#if EV_MULTIPLICITY
1474 3273
3274ecb_cold
1475struct ev_loop * 3275struct ev_loop *
1476ev_loop_new (unsigned int flags) 3276ev_loop_new (unsigned int flags) EV_NOEXCEPT
1477{ 3277{
1478 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3278 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1479 3279
1480 memset (loop, 0, sizeof (struct ev_loop)); 3280 memset (EV_A, 0, sizeof (struct ev_loop));
1481
1482 loop_init (EV_A_ flags); 3281 loop_init (EV_A_ flags);
1483 3282
1484 if (ev_backend (EV_A)) 3283 if (ev_backend (EV_A))
1485 return loop; 3284 return EV_A;
1486 3285
3286 ev_free (EV_A);
1487 return 0; 3287 return 0;
1488} 3288}
1489 3289
1490void 3290#endif /* multiplicity */
1491ev_loop_destroy (EV_P)
1492{
1493 loop_destroy (EV_A);
1494 ev_free (loop);
1495}
1496
1497void
1498ev_loop_fork (EV_P)
1499{
1500 postfork = 1; /* must be in line with ev_default_fork */
1501}
1502 3291
1503#if EV_VERIFY 3292#if EV_VERIFY
1504void noinline 3293ecb_noinline ecb_cold
3294static void
1505verify_watcher (EV_P_ W w) 3295verify_watcher (EV_P_ W w)
1506{ 3296{
1507 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3297 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508 3298
1509 if (w->pending) 3299 if (w->pending)
1510 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3300 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1511} 3301}
1512 3302
1513static void noinline 3303ecb_noinline ecb_cold
3304static void
1514verify_heap (EV_P_ ANHE *heap, int N) 3305verify_heap (EV_P_ ANHE *heap, int N)
1515{ 3306{
1516 int i; 3307 int i;
1517 3308
1518 for (i = HEAP0; i < N + HEAP0; ++i) 3309 for (i = HEAP0; i < N + HEAP0; ++i)
1519 { 3310 {
1520 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 3311 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1521 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 3312 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1522 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 3313 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1523 3314
1524 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3315 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525 } 3316 }
1526} 3317}
1527 3318
1528static void noinline 3319ecb_noinline ecb_cold
3320static void
1529array_verify (EV_P_ W *ws, int cnt) 3321array_verify (EV_P_ W *ws, int cnt)
1530{ 3322{
1531 while (cnt--) 3323 while (cnt--)
1532 { 3324 {
1533 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3325 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534 verify_watcher (EV_A_ ws [cnt]); 3326 verify_watcher (EV_A_ ws [cnt]);
1535 } 3327 }
1536} 3328}
1537#endif 3329#endif
1538 3330
1539void 3331#if EV_FEATURE_API
1540ev_loop_verify (EV_P) 3332void ecb_cold
3333ev_verify (EV_P) EV_NOEXCEPT
1541{ 3334{
1542#if EV_VERIFY 3335#if EV_VERIFY
1543 int i; 3336 int i;
1544 WL w; 3337 WL w, w2;
1545 3338
1546 assert (activecnt >= -1); 3339 assert (activecnt >= -1);
1547 3340
1548 assert (fdchangemax >= fdchangecnt); 3341 assert (fdchangemax >= fdchangecnt);
1549 for (i = 0; i < fdchangecnt; ++i) 3342 for (i = 0; i < fdchangecnt; ++i)
1550 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 3343 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1551 3344
1552 assert (anfdmax >= 0); 3345 assert (anfdmax >= 0);
1553 for (i = 0; i < anfdmax; ++i) 3346 for (i = 0; i < anfdmax; ++i)
3347 {
3348 int j = 0;
3349
1554 for (w = anfds [i].head; w; w = w->next) 3350 for (w = w2 = anfds [i].head; w; w = w->next)
1555 { 3351 {
1556 verify_watcher (EV_A_ (W)w); 3352 verify_watcher (EV_A_ (W)w);
3353
3354 if (j++ & 1)
3355 {
3356 assert (("libev: io watcher list contains a loop", w != w2));
3357 w2 = w2->next;
3358 }
3359
1557 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 3360 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1558 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3361 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1559 } 3362 }
3363 }
1560 3364
1561 assert (timermax >= timercnt); 3365 assert (timermax >= timercnt);
1562 verify_heap (EV_A_ timers, timercnt); 3366 verify_heap (EV_A_ timers, timercnt);
1563 3367
1564#if EV_PERIODIC_ENABLE 3368#if EV_PERIODIC_ENABLE
… …
1568 3372
1569 for (i = NUMPRI; i--; ) 3373 for (i = NUMPRI; i--; )
1570 { 3374 {
1571 assert (pendingmax [i] >= pendingcnt [i]); 3375 assert (pendingmax [i] >= pendingcnt [i]);
1572#if EV_IDLE_ENABLE 3376#if EV_IDLE_ENABLE
3377 assert (idleall >= 0);
1573 assert (idlemax [i] >= idlecnt [i]); 3378 assert (idlemax [i] >= idlecnt [i]);
1574 array_verify (EV_A_ (W *)idles [i], idlecnt [i]); 3379 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1575#endif 3380#endif
1576 } 3381 }
1577 3382
1578#if EV_FORK_ENABLE 3383#if EV_FORK_ENABLE
1579 assert (forkmax >= forkcnt); 3384 assert (forkmax >= forkcnt);
1580 array_verify (EV_A_ (W *)forks, forkcnt); 3385 array_verify (EV_A_ (W *)forks, forkcnt);
1581#endif 3386#endif
1582 3387
3388#if EV_CLEANUP_ENABLE
3389 assert (cleanupmax >= cleanupcnt);
3390 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3391#endif
3392
1583#if EV_ASYNC_ENABLE 3393#if EV_ASYNC_ENABLE
1584 assert (asyncmax >= asynccnt); 3394 assert (asyncmax >= asynccnt);
1585 array_verify (EV_A_ (W *)asyncs, asynccnt); 3395 array_verify (EV_A_ (W *)asyncs, asynccnt);
1586#endif 3396#endif
1587 3397
3398#if EV_PREPARE_ENABLE
1588 assert (preparemax >= preparecnt); 3399 assert (preparemax >= preparecnt);
1589 array_verify (EV_A_ (W *)prepares, preparecnt); 3400 array_verify (EV_A_ (W *)prepares, preparecnt);
3401#endif
1590 3402
3403#if EV_CHECK_ENABLE
1591 assert (checkmax >= checkcnt); 3404 assert (checkmax >= checkcnt);
1592 array_verify (EV_A_ (W *)checks, checkcnt); 3405 array_verify (EV_A_ (W *)checks, checkcnt);
3406#endif
1593 3407
1594# if 0 3408# if 0
3409#if EV_CHILD_ENABLE
1595 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3410 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1596 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3411 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3412#endif
1597# endif 3413# endif
1598#endif 3414#endif
1599} 3415}
1600 3416#endif
1601#endif /* multiplicity */
1602 3417
1603#if EV_MULTIPLICITY 3418#if EV_MULTIPLICITY
3419ecb_cold
1604struct ev_loop * 3420struct ev_loop *
1605ev_default_loop_init (unsigned int flags)
1606#else 3421#else
1607int 3422int
3423#endif
1608ev_default_loop (unsigned int flags) 3424ev_default_loop (unsigned int flags) EV_NOEXCEPT
1609#endif
1610{ 3425{
1611 if (!ev_default_loop_ptr) 3426 if (!ev_default_loop_ptr)
1612 { 3427 {
1613#if EV_MULTIPLICITY 3428#if EV_MULTIPLICITY
1614 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3429 EV_P = ev_default_loop_ptr = &default_loop_struct;
1615#else 3430#else
1616 ev_default_loop_ptr = 1; 3431 ev_default_loop_ptr = 1;
1617#endif 3432#endif
1618 3433
1619 loop_init (EV_A_ flags); 3434 loop_init (EV_A_ flags);
1620 3435
1621 if (ev_backend (EV_A)) 3436 if (ev_backend (EV_A))
1622 { 3437 {
1623#ifndef _WIN32 3438#if EV_CHILD_ENABLE
1624 ev_signal_init (&childev, childcb, SIGCHLD); 3439 ev_signal_init (&childev, childcb, SIGCHLD);
1625 ev_set_priority (&childev, EV_MAXPRI); 3440 ev_set_priority (&childev, EV_MAXPRI);
1626 ev_signal_start (EV_A_ &childev); 3441 ev_signal_start (EV_A_ &childev);
1627 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3442 ev_unref (EV_A); /* child watcher should not keep loop alive */
1628#endif 3443#endif
… …
1633 3448
1634 return ev_default_loop_ptr; 3449 return ev_default_loop_ptr;
1635} 3450}
1636 3451
1637void 3452void
1638ev_default_destroy (void) 3453ev_loop_fork (EV_P) EV_NOEXCEPT
1639{ 3454{
1640#if EV_MULTIPLICITY 3455 postfork = 1;
1641 struct ev_loop *loop = ev_default_loop_ptr;
1642#endif
1643
1644#ifndef _WIN32
1645 ev_ref (EV_A); /* child watcher */
1646 ev_signal_stop (EV_A_ &childev);
1647#endif
1648
1649 loop_destroy (EV_A);
1650}
1651
1652void
1653ev_default_fork (void)
1654{
1655#if EV_MULTIPLICITY
1656 struct ev_loop *loop = ev_default_loop_ptr;
1657#endif
1658
1659 if (backend)
1660 postfork = 1; /* must be in line with ev_loop_fork */
1661} 3456}
1662 3457
1663/*****************************************************************************/ 3458/*****************************************************************************/
1664 3459
1665void 3460void
1666ev_invoke (EV_P_ void *w, int revents) 3461ev_invoke (EV_P_ void *w, int revents)
1667{ 3462{
1668 EV_CB_INVOKE ((W)w, revents); 3463 EV_CB_INVOKE ((W)w, revents);
1669} 3464}
1670 3465
1671void inline_speed 3466unsigned int
1672call_pending (EV_P) 3467ev_pending_count (EV_P) EV_NOEXCEPT
1673{ 3468{
1674 int pri; 3469 int pri;
3470 unsigned int count = 0;
1675 3471
1676 for (pri = NUMPRI; pri--; ) 3472 for (pri = NUMPRI; pri--; )
3473 count += pendingcnt [pri];
3474
3475 return count;
3476}
3477
3478ecb_noinline
3479void
3480ev_invoke_pending (EV_P)
3481{
3482 pendingpri = NUMPRI;
3483
3484 do
3485 {
3486 --pendingpri;
3487
3488 /* pendingpri possibly gets modified in the inner loop */
1677 while (pendingcnt [pri]) 3489 while (pendingcnt [pendingpri])
1678 {
1679 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1680
1681 if (expect_true (p->w))
1682 { 3490 {
1683 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 3491 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1684 3492
1685 p->w->pending = 0; 3493 p->w->pending = 0;
1686 EV_CB_INVOKE (p->w, p->events); 3494 EV_CB_INVOKE (p->w, p->events);
1687 EV_FREQUENT_CHECK; 3495 EV_FREQUENT_CHECK;
1688 } 3496 }
1689 } 3497 }
3498 while (pendingpri);
1690} 3499}
1691 3500
1692#if EV_IDLE_ENABLE 3501#if EV_IDLE_ENABLE
1693void inline_size 3502/* make idle watchers pending. this handles the "call-idle */
3503/* only when higher priorities are idle" logic */
3504inline_size void
1694idle_reify (EV_P) 3505idle_reify (EV_P)
1695{ 3506{
1696 if (expect_false (idleall)) 3507 if (ecb_expect_false (idleall))
1697 { 3508 {
1698 int pri; 3509 int pri;
1699 3510
1700 for (pri = NUMPRI; pri--; ) 3511 for (pri = NUMPRI; pri--; )
1701 { 3512 {
… …
1710 } 3521 }
1711 } 3522 }
1712} 3523}
1713#endif 3524#endif
1714 3525
1715void inline_size 3526/* make timers pending */
3527inline_size void
1716timers_reify (EV_P) 3528timers_reify (EV_P)
1717{ 3529{
1718 EV_FREQUENT_CHECK; 3530 EV_FREQUENT_CHECK;
1719 3531
1720 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 3532 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1721 { 3533 {
1722 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 3534 do
1723
1724 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1725
1726 /* first reschedule or stop timer */
1727 if (w->repeat)
1728 { 3535 {
3536 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
3537
3538 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
3539
3540 /* first reschedule or stop timer */
3541 if (w->repeat)
3542 {
1729 ev_at (w) += w->repeat; 3543 ev_at (w) += w->repeat;
1730 if (ev_at (w) < mn_now) 3544 if (ev_at (w) < mn_now)
1731 ev_at (w) = mn_now; 3545 ev_at (w) = mn_now;
1732 3546
1733 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3547 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1734 3548
1735 ANHE_at_cache (timers [HEAP0]); 3549 ANHE_at_cache (timers [HEAP0]);
1736 downheap (timers, timercnt, HEAP0); 3550 downheap (timers, timercnt, HEAP0);
3551 }
3552 else
3553 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
3554
3555 EV_FREQUENT_CHECK;
3556 feed_reverse (EV_A_ (W)w);
1737 } 3557 }
1738 else 3558 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1739 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1740 3559
1741 EV_FREQUENT_CHECK; 3560 feed_reverse_done (EV_A_ EV_TIMER);
1742 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1743 } 3561 }
1744} 3562}
1745 3563
1746#if EV_PERIODIC_ENABLE 3564#if EV_PERIODIC_ENABLE
1747void inline_size 3565
3566ecb_noinline
3567static void
3568periodic_recalc (EV_P_ ev_periodic *w)
3569{
3570 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3571 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3572
3573 /* the above almost always errs on the low side */
3574 while (at <= ev_rt_now)
3575 {
3576 ev_tstamp nat = at + w->interval;
3577
3578 /* when resolution fails us, we use ev_rt_now */
3579 if (ecb_expect_false (nat == at))
3580 {
3581 at = ev_rt_now;
3582 break;
3583 }
3584
3585 at = nat;
3586 }
3587
3588 ev_at (w) = at;
3589}
3590
3591/* make periodics pending */
3592inline_size void
1748periodics_reify (EV_P) 3593periodics_reify (EV_P)
1749{ 3594{
1750 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
1751 3596
1752 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3597 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1753 { 3598 {
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3599 do
1755
1756 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1757
1758 /* first reschedule or stop timer */
1759 if (w->reschedule_cb)
1760 { 3600 {
3601 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
3602
3603 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
3604
3605 /* first reschedule or stop timer */
3606 if (w->reschedule_cb)
3607 {
1761 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3608 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1762 3609
1763 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 3610 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1764 3611
1765 ANHE_at_cache (periodics [HEAP0]); 3612 ANHE_at_cache (periodics [HEAP0]);
1766 downheap (periodics, periodiccnt, HEAP0); 3613 downheap (periodics, periodiccnt, HEAP0);
3614 }
3615 else if (w->interval)
3616 {
3617 periodic_recalc (EV_A_ w);
3618 ANHE_at_cache (periodics [HEAP0]);
3619 downheap (periodics, periodiccnt, HEAP0);
3620 }
3621 else
3622 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
3623
3624 EV_FREQUENT_CHECK;
3625 feed_reverse (EV_A_ (W)w);
1767 } 3626 }
1768 else if (w->interval) 3627 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1769 {
1770 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1771 /* if next trigger time is not sufficiently in the future, put it there */
1772 /* this might happen because of floating point inexactness */
1773 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1774 {
1775 ev_at (w) += w->interval;
1776 3628
1777 /* if interval is unreasonably low we might still have a time in the past */
1778 /* so correct this. this will make the periodic very inexact, but the user */
1779 /* has effectively asked to get triggered more often than possible */
1780 if (ev_at (w) < ev_rt_now)
1781 ev_at (w) = ev_rt_now;
1782 }
1783
1784 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0);
1786 }
1787 else
1788 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1789
1790 EV_FREQUENT_CHECK;
1791 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 3629 feed_reverse_done (EV_A_ EV_PERIODIC);
1792 } 3630 }
1793} 3631}
1794 3632
1795static void noinline 3633/* simply recalculate all periodics */
3634/* TODO: maybe ensure that at least one event happens when jumping forward? */
3635ecb_noinline ecb_cold
3636static void
1796periodics_reschedule (EV_P) 3637periodics_reschedule (EV_P)
1797{ 3638{
1798 int i; 3639 int i;
1799 3640
1800 /* adjust periodics after time jump */ 3641 /* adjust periodics after time jump */
… …
1803 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3644 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1804 3645
1805 if (w->reschedule_cb) 3646 if (w->reschedule_cb)
1806 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3647 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1807 else if (w->interval) 3648 else if (w->interval)
1808 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3649 periodic_recalc (EV_A_ w);
1809 3650
1810 ANHE_at_cache (periodics [i]); 3651 ANHE_at_cache (periodics [i]);
1811 } 3652 }
1812 3653
1813 reheap (periodics, periodiccnt); 3654 reheap (periodics, periodiccnt);
1814} 3655}
1815#endif 3656#endif
1816 3657
1817void inline_speed 3658/* adjust all timers by a given offset */
3659ecb_noinline ecb_cold
3660static void
3661timers_reschedule (EV_P_ ev_tstamp adjust)
3662{
3663 int i;
3664
3665 for (i = 0; i < timercnt; ++i)
3666 {
3667 ANHE *he = timers + i + HEAP0;
3668 ANHE_w (*he)->at += adjust;
3669 ANHE_at_cache (*he);
3670 }
3671}
3672
3673/* fetch new monotonic and realtime times from the kernel */
3674/* also detect if there was a timejump, and act accordingly */
3675inline_speed void
1818time_update (EV_P_ ev_tstamp max_block) 3676time_update (EV_P_ ev_tstamp max_block)
1819{ 3677{
1820 int i;
1821
1822#if EV_USE_MONOTONIC 3678#if EV_USE_MONOTONIC
1823 if (expect_true (have_monotonic)) 3679 if (ecb_expect_true (have_monotonic))
1824 { 3680 {
3681 int i;
1825 ev_tstamp odiff = rtmn_diff; 3682 ev_tstamp odiff = rtmn_diff;
1826 3683
1827 mn_now = get_clock (); 3684 mn_now = get_clock ();
1828 3685
1829 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3686 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1830 /* interpolate in the meantime */ 3687 /* interpolate in the meantime */
1831 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3688 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1832 { 3689 {
1833 ev_rt_now = rtmn_diff + mn_now; 3690 ev_rt_now = rtmn_diff + mn_now;
1834 return; 3691 return;
1835 } 3692 }
1836 3693
… …
1845 * doesn't hurt either as we only do this on time-jumps or 3702 * doesn't hurt either as we only do this on time-jumps or
1846 * in the unlikely event of having been preempted here. 3703 * in the unlikely event of having been preempted here.
1847 */ 3704 */
1848 for (i = 4; --i; ) 3705 for (i = 4; --i; )
1849 { 3706 {
3707 ev_tstamp diff;
1850 rtmn_diff = ev_rt_now - mn_now; 3708 rtmn_diff = ev_rt_now - mn_now;
1851 3709
3710 diff = odiff - rtmn_diff;
3711
1852 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3712 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1853 return; /* all is well */ 3713 return; /* all is well */
1854 3714
1855 ev_rt_now = ev_time (); 3715 ev_rt_now = ev_time ();
1856 mn_now = get_clock (); 3716 mn_now = get_clock ();
1857 now_floor = mn_now; 3717 now_floor = mn_now;
1858 } 3718 }
1859 3719
3720 /* no timer adjustment, as the monotonic clock doesn't jump */
3721 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1860# if EV_PERIODIC_ENABLE 3722# if EV_PERIODIC_ENABLE
1861 periodics_reschedule (EV_A); 3723 periodics_reschedule (EV_A);
1862# endif 3724# endif
1863 /* no timer adjustment, as the monotonic clock doesn't jump */
1864 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865 } 3725 }
1866 else 3726 else
1867#endif 3727#endif
1868 { 3728 {
1869 ev_rt_now = ev_time (); 3729 ev_rt_now = ev_time ();
1870 3730
1871 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3731 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1872 { 3732 {
3733 /* adjust timers. this is easy, as the offset is the same for all of them */
3734 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1873#if EV_PERIODIC_ENABLE 3735#if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 3736 periodics_reschedule (EV_A);
1875#endif 3737#endif
1876 /* adjust timers. this is easy, as the offset is the same for all of them */
1877 for (i = 0; i < timercnt; ++i)
1878 {
1879 ANHE *he = timers + i + HEAP0;
1880 ANHE_w (*he)->at += ev_rt_now - mn_now;
1881 ANHE_at_cache (*he);
1882 }
1883 } 3738 }
1884 3739
1885 mn_now = ev_rt_now; 3740 mn_now = ev_rt_now;
1886 } 3741 }
1887} 3742}
1888 3743
1889void 3744int
1890ev_ref (EV_P)
1891{
1892 ++activecnt;
1893}
1894
1895void
1896ev_unref (EV_P)
1897{
1898 --activecnt;
1899}
1900
1901static int loop_done;
1902
1903void
1904ev_loop (EV_P_ int flags) 3745ev_run (EV_P_ int flags)
1905{ 3746{
3747#if EV_FEATURE_API
3748 ++loop_depth;
3749#endif
3750
3751 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3752
1906 loop_done = EVUNLOOP_CANCEL; 3753 loop_done = EVBREAK_CANCEL;
1907 3754
1908 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3755 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1909 3756
1910 do 3757 do
1911 { 3758 {
1912#if EV_VERIFY >= 2 3759#if EV_VERIFY >= 2
1913 ev_loop_verify (EV_A); 3760 ev_verify (EV_A);
1914#endif 3761#endif
1915 3762
1916#ifndef _WIN32 3763#ifndef _WIN32
1917 if (expect_false (curpid)) /* penalise the forking check even more */ 3764 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
1918 if (expect_false (getpid () != curpid)) 3765 if (ecb_expect_false (getpid () != curpid))
1919 { 3766 {
1920 curpid = getpid (); 3767 curpid = getpid ();
1921 postfork = 1; 3768 postfork = 1;
1922 } 3769 }
1923#endif 3770#endif
1924 3771
1925#if EV_FORK_ENABLE 3772#if EV_FORK_ENABLE
1926 /* we might have forked, so queue fork handlers */ 3773 /* we might have forked, so queue fork handlers */
1927 if (expect_false (postfork)) 3774 if (ecb_expect_false (postfork))
1928 if (forkcnt) 3775 if (forkcnt)
1929 { 3776 {
1930 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3777 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1931 call_pending (EV_A); 3778 EV_INVOKE_PENDING;
1932 } 3779 }
1933#endif 3780#endif
1934 3781
3782#if EV_PREPARE_ENABLE
1935 /* queue prepare watchers (and execute them) */ 3783 /* queue prepare watchers (and execute them) */
1936 if (expect_false (preparecnt)) 3784 if (ecb_expect_false (preparecnt))
1937 { 3785 {
1938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3786 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1939 call_pending (EV_A); 3787 EV_INVOKE_PENDING;
1940 } 3788 }
3789#endif
1941 3790
1942 if (expect_false (!activecnt)) 3791 if (ecb_expect_false (loop_done))
1943 break; 3792 break;
1944 3793
1945 /* we might have forked, so reify kernel state if necessary */ 3794 /* we might have forked, so reify kernel state if necessary */
1946 if (expect_false (postfork)) 3795 if (ecb_expect_false (postfork))
1947 loop_fork (EV_A); 3796 loop_fork (EV_A);
1948 3797
1949 /* update fd-related kernel structures */ 3798 /* update fd-related kernel structures */
1950 fd_reify (EV_A); 3799 fd_reify (EV_A);
1951 3800
1952 /* calculate blocking time */ 3801 /* calculate blocking time */
1953 { 3802 {
1954 ev_tstamp waittime = 0.; 3803 ev_tstamp waittime = 0.;
1955 ev_tstamp sleeptime = 0.; 3804 ev_tstamp sleeptime = 0.;
1956 3805
3806 /* remember old timestamp for io_blocktime calculation */
3807 ev_tstamp prev_mn_now = mn_now;
3808
3809 /* update time to cancel out callback processing overhead */
3810 time_update (EV_A_ 1e100);
3811
3812 /* from now on, we want a pipe-wake-up */
3813 pipe_write_wanted = 1;
3814
3815 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3816
1957 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3817 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1958 { 3818 {
1959 /* update time to cancel out callback processing overhead */
1960 time_update (EV_A_ 1e100);
1961
1962 waittime = MAX_BLOCKTIME; 3819 waittime = MAX_BLOCKTIME;
1963 3820
1964 if (timercnt) 3821 if (timercnt)
1965 { 3822 {
1966 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3823 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1967 if (waittime > to) waittime = to; 3824 if (waittime > to) waittime = to;
1968 } 3825 }
1969 3826
1970#if EV_PERIODIC_ENABLE 3827#if EV_PERIODIC_ENABLE
1971 if (periodiccnt) 3828 if (periodiccnt)
1972 { 3829 {
1973 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3830 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1974 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
1975 } 3832 }
1976#endif 3833#endif
1977 3834
3835 /* don't let timeouts decrease the waittime below timeout_blocktime */
1978 if (expect_false (waittime < timeout_blocktime)) 3836 if (ecb_expect_false (waittime < timeout_blocktime))
1979 waittime = timeout_blocktime; 3837 waittime = timeout_blocktime;
1980 3838
1981 sleeptime = waittime - backend_fudge; 3839 /* at this point, we NEED to wait, so we have to ensure */
3840 /* to pass a minimum nonzero value to the backend */
3841 if (ecb_expect_false (waittime < backend_mintime))
3842 waittime = backend_mintime;
1982 3843
3844 /* extra check because io_blocktime is commonly 0 */
1983 if (expect_true (sleeptime > io_blocktime)) 3845 if (ecb_expect_false (io_blocktime))
1984 sleeptime = io_blocktime;
1985
1986 if (sleeptime)
1987 { 3846 {
3847 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3848
3849 if (sleeptime > waittime - backend_mintime)
3850 sleeptime = waittime - backend_mintime;
3851
3852 if (ecb_expect_true (sleeptime > 0.))
3853 {
1988 ev_sleep (sleeptime); 3854 ev_sleep (sleeptime);
1989 waittime -= sleeptime; 3855 waittime -= sleeptime;
3856 }
1990 } 3857 }
1991 } 3858 }
1992 3859
3860#if EV_FEATURE_API
1993 ++loop_count; 3861 ++loop_count;
3862#endif
3863 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1994 backend_poll (EV_A_ waittime); 3864 backend_poll (EV_A_ waittime);
3865 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3866
3867 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3868
3869 ECB_MEMORY_FENCE_ACQUIRE;
3870 if (pipe_write_skipped)
3871 {
3872 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3873 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3874 }
1995 3875
1996 /* update ev_rt_now, do magic */ 3876 /* update ev_rt_now, do magic */
1997 time_update (EV_A_ waittime + sleeptime); 3877 time_update (EV_A_ waittime + sleeptime);
1998 } 3878 }
1999 3879
… …
2006#if EV_IDLE_ENABLE 3886#if EV_IDLE_ENABLE
2007 /* queue idle watchers unless other events are pending */ 3887 /* queue idle watchers unless other events are pending */
2008 idle_reify (EV_A); 3888 idle_reify (EV_A);
2009#endif 3889#endif
2010 3890
3891#if EV_CHECK_ENABLE
2011 /* queue check watchers, to be executed first */ 3892 /* queue check watchers, to be executed first */
2012 if (expect_false (checkcnt)) 3893 if (ecb_expect_false (checkcnt))
2013 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3894 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3895#endif
2014 3896
2015 call_pending (EV_A); 3897 EV_INVOKE_PENDING;
2016 } 3898 }
2017 while (expect_true ( 3899 while (ecb_expect_true (
2018 activecnt 3900 activecnt
2019 && !loop_done 3901 && !loop_done
2020 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3902 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2021 )); 3903 ));
2022 3904
2023 if (loop_done == EVUNLOOP_ONE) 3905 if (loop_done == EVBREAK_ONE)
2024 loop_done = EVUNLOOP_CANCEL; 3906 loop_done = EVBREAK_CANCEL;
2025}
2026 3907
3908#if EV_FEATURE_API
3909 --loop_depth;
3910#endif
3911
3912 return activecnt;
3913}
3914
2027void 3915void
2028ev_unloop (EV_P_ int how) 3916ev_break (EV_P_ int how) EV_NOEXCEPT
2029{ 3917{
2030 loop_done = how; 3918 loop_done = how;
2031} 3919}
2032 3920
3921void
3922ev_ref (EV_P) EV_NOEXCEPT
3923{
3924 ++activecnt;
3925}
3926
3927void
3928ev_unref (EV_P) EV_NOEXCEPT
3929{
3930 --activecnt;
3931}
3932
3933void
3934ev_now_update (EV_P) EV_NOEXCEPT
3935{
3936 time_update (EV_A_ 1e100);
3937}
3938
3939void
3940ev_suspend (EV_P) EV_NOEXCEPT
3941{
3942 ev_now_update (EV_A);
3943}
3944
3945void
3946ev_resume (EV_P) EV_NOEXCEPT
3947{
3948 ev_tstamp mn_prev = mn_now;
3949
3950 ev_now_update (EV_A);
3951 timers_reschedule (EV_A_ mn_now - mn_prev);
3952#if EV_PERIODIC_ENABLE
3953 /* TODO: really do this? */
3954 periodics_reschedule (EV_A);
3955#endif
3956}
3957
2033/*****************************************************************************/ 3958/*****************************************************************************/
3959/* singly-linked list management, used when the expected list length is short */
2034 3960
2035void inline_size 3961inline_size void
2036wlist_add (WL *head, WL elem) 3962wlist_add (WL *head, WL elem)
2037{ 3963{
2038 elem->next = *head; 3964 elem->next = *head;
2039 *head = elem; 3965 *head = elem;
2040} 3966}
2041 3967
2042void inline_size 3968inline_size void
2043wlist_del (WL *head, WL elem) 3969wlist_del (WL *head, WL elem)
2044{ 3970{
2045 while (*head) 3971 while (*head)
2046 { 3972 {
2047 if (*head == elem) 3973 if (ecb_expect_true (*head == elem))
2048 { 3974 {
2049 *head = elem->next; 3975 *head = elem->next;
2050 return; 3976 break;
2051 } 3977 }
2052 3978
2053 head = &(*head)->next; 3979 head = &(*head)->next;
2054 } 3980 }
2055} 3981}
2056 3982
2057void inline_speed 3983/* internal, faster, version of ev_clear_pending */
3984inline_speed void
2058clear_pending (EV_P_ W w) 3985clear_pending (EV_P_ W w)
2059{ 3986{
2060 if (w->pending) 3987 if (w->pending)
2061 { 3988 {
2062 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3989 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2063 w->pending = 0; 3990 w->pending = 0;
2064 } 3991 }
2065} 3992}
2066 3993
2067int 3994int
2068ev_clear_pending (EV_P_ void *w) 3995ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2069{ 3996{
2070 W w_ = (W)w; 3997 W w_ = (W)w;
2071 int pending = w_->pending; 3998 int pending = w_->pending;
2072 3999
2073 if (expect_true (pending)) 4000 if (ecb_expect_true (pending))
2074 { 4001 {
2075 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4002 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
4003 p->w = (W)&pending_w;
2076 w_->pending = 0; 4004 w_->pending = 0;
2077 p->w = 0;
2078 return p->events; 4005 return p->events;
2079 } 4006 }
2080 else 4007 else
2081 return 0; 4008 return 0;
2082} 4009}
2083 4010
2084void inline_size 4011inline_size void
2085pri_adjust (EV_P_ W w) 4012pri_adjust (EV_P_ W w)
2086{ 4013{
2087 int pri = w->priority; 4014 int pri = ev_priority (w);
2088 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 4015 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2089 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 4016 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2090 w->priority = pri; 4017 ev_set_priority (w, pri);
2091} 4018}
2092 4019
2093void inline_speed 4020inline_speed void
2094ev_start (EV_P_ W w, int active) 4021ev_start (EV_P_ W w, int active)
2095{ 4022{
2096 pri_adjust (EV_A_ w); 4023 pri_adjust (EV_A_ w);
2097 w->active = active; 4024 w->active = active;
2098 ev_ref (EV_A); 4025 ev_ref (EV_A);
2099} 4026}
2100 4027
2101void inline_size 4028inline_size void
2102ev_stop (EV_P_ W w) 4029ev_stop (EV_P_ W w)
2103{ 4030{
2104 ev_unref (EV_A); 4031 ev_unref (EV_A);
2105 w->active = 0; 4032 w->active = 0;
2106} 4033}
2107 4034
2108/*****************************************************************************/ 4035/*****************************************************************************/
2109 4036
2110void noinline 4037ecb_noinline
4038void
2111ev_io_start (EV_P_ ev_io *w) 4039ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2112{ 4040{
2113 int fd = w->fd; 4041 int fd = w->fd;
2114 4042
2115 if (expect_false (ev_is_active (w))) 4043 if (ecb_expect_false (ev_is_active (w)))
2116 return; 4044 return;
2117 4045
2118 assert (("ev_io_start called with negative fd", fd >= 0)); 4046 assert (("libev: ev_io_start called with negative fd", fd >= 0));
4047 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2119 4048
4049#if EV_VERIFY >= 2
4050 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4051#endif
2120 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2121 4053
2122 ev_start (EV_A_ (W)w, 1); 4054 ev_start (EV_A_ (W)w, 1);
2123 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 4055 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2124 wlist_add (&anfds[fd].head, (WL)w); 4056 wlist_add (&anfds[fd].head, (WL)w);
2125 4057
4058 /* common bug, apparently */
4059 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4060
2126 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 4061 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2127 w->events &= ~EV_IOFDSET; 4062 w->events &= ~EV__IOFDSET;
2128 4063
2129 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
2130} 4065}
2131 4066
2132void noinline 4067ecb_noinline
4068void
2133ev_io_stop (EV_P_ ev_io *w) 4069ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2134{ 4070{
2135 clear_pending (EV_A_ (W)w); 4071 clear_pending (EV_A_ (W)w);
2136 if (expect_false (!ev_is_active (w))) 4072 if (ecb_expect_false (!ev_is_active (w)))
2137 return; 4073 return;
2138 4074
2139 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4075 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2140 4076
4077#if EV_VERIFY >= 2
4078 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4079#endif
2141 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
2142 4081
2143 wlist_del (&anfds[w->fd].head, (WL)w); 4082 wlist_del (&anfds[w->fd].head, (WL)w);
2144 ev_stop (EV_A_ (W)w); 4083 ev_stop (EV_A_ (W)w);
2145 4084
2146 fd_change (EV_A_ w->fd, 1); 4085 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2147 4086
2148 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
2149} 4088}
2150 4089
2151void noinline 4090ecb_noinline
4091void
2152ev_timer_start (EV_P_ ev_timer *w) 4092ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2153{ 4093{
2154 if (expect_false (ev_is_active (w))) 4094 if (ecb_expect_false (ev_is_active (w)))
2155 return; 4095 return;
2156 4096
2157 ev_at (w) += mn_now; 4097 ev_at (w) += mn_now;
2158 4098
2159 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4099 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2160 4100
2161 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
2162 4102
2163 ++timercnt; 4103 ++timercnt;
2164 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4104 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2165 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4105 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2166 ANHE_w (timers [ev_active (w)]) = (WT)w; 4106 ANHE_w (timers [ev_active (w)]) = (WT)w;
2167 ANHE_at_cache (timers [ev_active (w)]); 4107 ANHE_at_cache (timers [ev_active (w)]);
2168 upheap (timers, ev_active (w)); 4108 upheap (timers, ev_active (w));
2169 4109
2170 EV_FREQUENT_CHECK; 4110 EV_FREQUENT_CHECK;
2171 4111
2172 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4112 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2173} 4113}
2174 4114
2175void noinline 4115ecb_noinline
4116void
2176ev_timer_stop (EV_P_ ev_timer *w) 4117ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2177{ 4118{
2178 clear_pending (EV_A_ (W)w); 4119 clear_pending (EV_A_ (W)w);
2179 if (expect_false (!ev_is_active (w))) 4120 if (ecb_expect_false (!ev_is_active (w)))
2180 return; 4121 return;
2181 4122
2182 EV_FREQUENT_CHECK; 4123 EV_FREQUENT_CHECK;
2183 4124
2184 { 4125 {
2185 int active = ev_active (w); 4126 int active = ev_active (w);
2186 4127
2187 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4128 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2188 4129
2189 --timercnt; 4130 --timercnt;
2190 4131
2191 if (expect_true (active < timercnt + HEAP0)) 4132 if (ecb_expect_true (active < timercnt + HEAP0))
2192 { 4133 {
2193 timers [active] = timers [timercnt + HEAP0]; 4134 timers [active] = timers [timercnt + HEAP0];
2194 adjustheap (timers, timercnt, active); 4135 adjustheap (timers, timercnt, active);
2195 } 4136 }
2196 } 4137 }
2197 4138
2198 EV_FREQUENT_CHECK;
2199
2200 ev_at (w) -= mn_now; 4139 ev_at (w) -= mn_now;
2201 4140
2202 ev_stop (EV_A_ (W)w); 4141 ev_stop (EV_A_ (W)w);
2203}
2204 4142
2205void noinline 4143 EV_FREQUENT_CHECK;
4144}
4145
4146ecb_noinline
4147void
2206ev_timer_again (EV_P_ ev_timer *w) 4148ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2207{ 4149{
2208 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
4151
4152 clear_pending (EV_A_ (W)w);
2209 4153
2210 if (ev_is_active (w)) 4154 if (ev_is_active (w))
2211 { 4155 {
2212 if (w->repeat) 4156 if (w->repeat)
2213 { 4157 {
… …
2225 } 4169 }
2226 4170
2227 EV_FREQUENT_CHECK; 4171 EV_FREQUENT_CHECK;
2228} 4172}
2229 4173
4174ev_tstamp
4175ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4176{
4177 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4178}
4179
2230#if EV_PERIODIC_ENABLE 4180#if EV_PERIODIC_ENABLE
2231void noinline 4181ecb_noinline
4182void
2232ev_periodic_start (EV_P_ ev_periodic *w) 4183ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2233{ 4184{
2234 if (expect_false (ev_is_active (w))) 4185 if (ecb_expect_false (ev_is_active (w)))
2235 return; 4186 return;
2236 4187
2237 if (w->reschedule_cb) 4188 if (w->reschedule_cb)
2238 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4189 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2239 else if (w->interval) 4190 else if (w->interval)
2240 { 4191 {
2241 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 4192 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2242 /* this formula differs from the one in periodic_reify because we do not always round up */ 4193 periodic_recalc (EV_A_ w);
2243 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2244 } 4194 }
2245 else 4195 else
2246 ev_at (w) = w->offset; 4196 ev_at (w) = w->offset;
2247 4197
2248 EV_FREQUENT_CHECK; 4198 EV_FREQUENT_CHECK;
2249 4199
2250 ++periodiccnt; 4200 ++periodiccnt;
2251 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4201 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2252 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4202 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2253 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4203 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2254 ANHE_at_cache (periodics [ev_active (w)]); 4204 ANHE_at_cache (periodics [ev_active (w)]);
2255 upheap (periodics, ev_active (w)); 4205 upheap (periodics, ev_active (w));
2256 4206
2257 EV_FREQUENT_CHECK; 4207 EV_FREQUENT_CHECK;
2258 4208
2259 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4209 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2260} 4210}
2261 4211
2262void noinline 4212ecb_noinline
4213void
2263ev_periodic_stop (EV_P_ ev_periodic *w) 4214ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2264{ 4215{
2265 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
2266 if (expect_false (!ev_is_active (w))) 4217 if (ecb_expect_false (!ev_is_active (w)))
2267 return; 4218 return;
2268 4219
2269 EV_FREQUENT_CHECK; 4220 EV_FREQUENT_CHECK;
2270 4221
2271 { 4222 {
2272 int active = ev_active (w); 4223 int active = ev_active (w);
2273 4224
2274 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4225 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2275 4226
2276 --periodiccnt; 4227 --periodiccnt;
2277 4228
2278 if (expect_true (active < periodiccnt + HEAP0)) 4229 if (ecb_expect_true (active < periodiccnt + HEAP0))
2279 { 4230 {
2280 periodics [active] = periodics [periodiccnt + HEAP0]; 4231 periodics [active] = periodics [periodiccnt + HEAP0];
2281 adjustheap (periodics, periodiccnt, active); 4232 adjustheap (periodics, periodiccnt, active);
2282 } 4233 }
2283 } 4234 }
2284 4235
2285 EV_FREQUENT_CHECK;
2286
2287 ev_stop (EV_A_ (W)w); 4236 ev_stop (EV_A_ (W)w);
2288}
2289 4237
2290void noinline 4238 EV_FREQUENT_CHECK;
4239}
4240
4241ecb_noinline
4242void
2291ev_periodic_again (EV_P_ ev_periodic *w) 4243ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2292{ 4244{
2293 /* TODO: use adjustheap and recalculation */ 4245 /* TODO: use adjustheap and recalculation */
2294 ev_periodic_stop (EV_A_ w); 4246 ev_periodic_stop (EV_A_ w);
2295 ev_periodic_start (EV_A_ w); 4247 ev_periodic_start (EV_A_ w);
2296} 4248}
… …
2298 4250
2299#ifndef SA_RESTART 4251#ifndef SA_RESTART
2300# define SA_RESTART 0 4252# define SA_RESTART 0
2301#endif 4253#endif
2302 4254
2303void noinline 4255#if EV_SIGNAL_ENABLE
4256
4257ecb_noinline
4258void
2304ev_signal_start (EV_P_ ev_signal *w) 4259ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2305{ 4260{
4261 if (ecb_expect_false (ev_is_active (w)))
4262 return;
4263
4264 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4265
2306#if EV_MULTIPLICITY 4266#if EV_MULTIPLICITY
2307 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4267 assert (("libev: a signal must not be attached to two different loops",
2308#endif 4268 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2309 if (expect_false (ev_is_active (w)))
2310 return;
2311 4269
2312 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 4270 signals [w->signum - 1].loop = EV_A;
4271 ECB_MEMORY_FENCE_RELEASE;
4272#endif
2313 4273
2314 evpipe_init (EV_A);
2315
2316 EV_FREQUENT_CHECK; 4274 EV_FREQUENT_CHECK;
2317 4275
4276#if EV_USE_SIGNALFD
4277 if (sigfd == -2)
2318 { 4278 {
2319#ifndef _WIN32 4279 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2320 sigset_t full, prev; 4280 if (sigfd < 0 && errno == EINVAL)
2321 sigfillset (&full); 4281 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2322 sigprocmask (SIG_SETMASK, &full, &prev);
2323#endif
2324 4282
2325 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 4283 if (sigfd >= 0)
4284 {
4285 fd_intern (sigfd); /* doing it twice will not hurt */
2326 4286
2327#ifndef _WIN32 4287 sigemptyset (&sigfd_set);
2328 sigprocmask (SIG_SETMASK, &prev, 0); 4288
2329#endif 4289 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4290 ev_set_priority (&sigfd_w, EV_MAXPRI);
4291 ev_io_start (EV_A_ &sigfd_w);
4292 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4293 }
2330 } 4294 }
4295
4296 if (sigfd >= 0)
4297 {
4298 /* TODO: check .head */
4299 sigaddset (&sigfd_set, w->signum);
4300 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4301
4302 signalfd (sigfd, &sigfd_set, 0);
4303 }
4304#endif
2331 4305
2332 ev_start (EV_A_ (W)w, 1); 4306 ev_start (EV_A_ (W)w, 1);
2333 wlist_add (&signals [w->signum - 1].head, (WL)w); 4307 wlist_add (&signals [w->signum - 1].head, (WL)w);
2334 4308
2335 if (!((WL)w)->next) 4309 if (!((WL)w)->next)
4310# if EV_USE_SIGNALFD
4311 if (sigfd < 0) /*TODO*/
4312# endif
2336 { 4313 {
2337#if _WIN32 4314# ifdef _WIN32
4315 evpipe_init (EV_A);
4316
2338 signal (w->signum, ev_sighandler); 4317 signal (w->signum, ev_sighandler);
2339#else 4318# else
2340 struct sigaction sa; 4319 struct sigaction sa;
4320
4321 evpipe_init (EV_A);
4322
2341 sa.sa_handler = ev_sighandler; 4323 sa.sa_handler = ev_sighandler;
2342 sigfillset (&sa.sa_mask); 4324 sigfillset (&sa.sa_mask);
2343 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4325 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2344 sigaction (w->signum, &sa, 0); 4326 sigaction (w->signum, &sa, 0);
4327
4328 if (origflags & EVFLAG_NOSIGMASK)
4329 {
4330 sigemptyset (&sa.sa_mask);
4331 sigaddset (&sa.sa_mask, w->signum);
4332 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4333 }
2345#endif 4334#endif
2346 } 4335 }
2347 4336
2348 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
2349} 4338}
2350 4339
2351void noinline 4340ecb_noinline
4341void
2352ev_signal_stop (EV_P_ ev_signal *w) 4342ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2353{ 4343{
2354 clear_pending (EV_A_ (W)w); 4344 clear_pending (EV_A_ (W)w);
2355 if (expect_false (!ev_is_active (w))) 4345 if (ecb_expect_false (!ev_is_active (w)))
2356 return; 4346 return;
2357 4347
2358 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
2359 4349
2360 wlist_del (&signals [w->signum - 1].head, (WL)w); 4350 wlist_del (&signals [w->signum - 1].head, (WL)w);
2361 ev_stop (EV_A_ (W)w); 4351 ev_stop (EV_A_ (W)w);
2362 4352
2363 if (!signals [w->signum - 1].head) 4353 if (!signals [w->signum - 1].head)
2364 signal (w->signum, SIG_DFL); 4354 {
2365
2366 EV_FREQUENT_CHECK;
2367}
2368
2369void
2370ev_child_start (EV_P_ ev_child *w)
2371{
2372#if EV_MULTIPLICITY 4355#if EV_MULTIPLICITY
4356 signals [w->signum - 1].loop = 0; /* unattach from signal */
4357#endif
4358#if EV_USE_SIGNALFD
4359 if (sigfd >= 0)
4360 {
4361 sigset_t ss;
4362
4363 sigemptyset (&ss);
4364 sigaddset (&ss, w->signum);
4365 sigdelset (&sigfd_set, w->signum);
4366
4367 signalfd (sigfd, &sigfd_set, 0);
4368 sigprocmask (SIG_UNBLOCK, &ss, 0);
4369 }
4370 else
4371#endif
4372 signal (w->signum, SIG_DFL);
4373 }
4374
4375 EV_FREQUENT_CHECK;
4376}
4377
4378#endif
4379
4380#if EV_CHILD_ENABLE
4381
4382void
4383ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4384{
4385#if EV_MULTIPLICITY
2373 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4386 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2374#endif 4387#endif
2375 if (expect_false (ev_is_active (w))) 4388 if (ecb_expect_false (ev_is_active (w)))
2376 return; 4389 return;
2377 4390
2378 EV_FREQUENT_CHECK; 4391 EV_FREQUENT_CHECK;
2379 4392
2380 ev_start (EV_A_ (W)w, 1); 4393 ev_start (EV_A_ (W)w, 1);
2381 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4394 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2382 4395
2383 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
2384} 4397}
2385 4398
2386void 4399void
2387ev_child_stop (EV_P_ ev_child *w) 4400ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2388{ 4401{
2389 clear_pending (EV_A_ (W)w); 4402 clear_pending (EV_A_ (W)w);
2390 if (expect_false (!ev_is_active (w))) 4403 if (ecb_expect_false (!ev_is_active (w)))
2391 return; 4404 return;
2392 4405
2393 EV_FREQUENT_CHECK; 4406 EV_FREQUENT_CHECK;
2394 4407
2395 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4408 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2396 ev_stop (EV_A_ (W)w); 4409 ev_stop (EV_A_ (W)w);
2397 4410
2398 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
2399} 4412}
4413
4414#endif
2400 4415
2401#if EV_STAT_ENABLE 4416#if EV_STAT_ENABLE
2402 4417
2403# ifdef _WIN32 4418# ifdef _WIN32
2404# undef lstat 4419# undef lstat
2405# define lstat(a,b) _stati64 (a,b) 4420# define lstat(a,b) _stati64 (a,b)
2406# endif 4421# endif
2407 4422
2408#define DEF_STAT_INTERVAL 5.0074891 4423#define DEF_STAT_INTERVAL 5.0074891
4424#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2409#define MIN_STAT_INTERVAL 0.1074891 4425#define MIN_STAT_INTERVAL 0.1074891
2410 4426
2411static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4427ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2412 4428
2413#if EV_USE_INOTIFY 4429#if EV_USE_INOTIFY
2414# define EV_INOTIFY_BUFSIZE 8192
2415 4430
2416static void noinline 4431/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4432# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4433
4434ecb_noinline
4435static void
2417infy_add (EV_P_ ev_stat *w) 4436infy_add (EV_P_ ev_stat *w)
2418{ 4437{
2419 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); 4438 w->wd = inotify_add_watch (fs_fd, w->path,
4439 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4440 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4441 | IN_DONT_FOLLOW | IN_MASK_ADD);
2420 4442
2421 if (w->wd < 0) 4443 if (w->wd >= 0)
4444 {
4445 struct statfs sfs;
4446
4447 /* now local changes will be tracked by inotify, but remote changes won't */
4448 /* unless the filesystem is known to be local, we therefore still poll */
4449 /* also do poll on <2.6.25, but with normal frequency */
4450
4451 if (!fs_2625)
4452 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4453 else if (!statfs (w->path, &sfs)
4454 && (sfs.f_type == 0x1373 /* devfs */
4455 || sfs.f_type == 0x4006 /* fat */
4456 || sfs.f_type == 0x4d44 /* msdos */
4457 || sfs.f_type == 0xEF53 /* ext2/3 */
4458 || sfs.f_type == 0x72b6 /* jffs2 */
4459 || sfs.f_type == 0x858458f6 /* ramfs */
4460 || sfs.f_type == 0x5346544e /* ntfs */
4461 || sfs.f_type == 0x3153464a /* jfs */
4462 || sfs.f_type == 0x9123683e /* btrfs */
4463 || sfs.f_type == 0x52654973 /* reiser3 */
4464 || sfs.f_type == 0x01021994 /* tmpfs */
4465 || sfs.f_type == 0x58465342 /* xfs */))
4466 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4467 else
4468 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2422 { 4469 }
2423 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 4470 else
4471 {
4472 /* can't use inotify, continue to stat */
4473 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2424 4474
2425 /* monitor some parent directory for speedup hints */ 4475 /* if path is not there, monitor some parent directory for speedup hints */
2426 /* note that exceeding the hardcoded limit is not a correctness issue, */ 4476 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2427 /* but an efficiency issue only */ 4477 /* but an efficiency issue only */
2428 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4478 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2429 { 4479 {
2430 char path [4096]; 4480 char path [4096];
2431 strcpy (path, w->path); 4481 strcpy (path, w->path);
… …
2435 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 4485 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2436 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 4486 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2437 4487
2438 char *pend = strrchr (path, '/'); 4488 char *pend = strrchr (path, '/');
2439 4489
2440 if (!pend) 4490 if (!pend || pend == path)
2441 break; /* whoops, no '/', complain to your admin */ 4491 break;
2442 4492
2443 *pend = 0; 4493 *pend = 0;
2444 w->wd = inotify_add_watch (fs_fd, path, mask); 4494 w->wd = inotify_add_watch (fs_fd, path, mask);
2445 } 4495 }
2446 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4496 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2447 } 4497 }
2448 } 4498 }
2449 else
2450 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2451 4499
2452 if (w->wd >= 0) 4500 if (w->wd >= 0)
2453 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4501 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2454}
2455 4502
2456static void noinline 4503 /* now re-arm timer, if required */
4504 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4505 ev_timer_again (EV_A_ &w->timer);
4506 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4507}
4508
4509ecb_noinline
4510static void
2457infy_del (EV_P_ ev_stat *w) 4511infy_del (EV_P_ ev_stat *w)
2458{ 4512{
2459 int slot; 4513 int slot;
2460 int wd = w->wd; 4514 int wd = w->wd;
2461 4515
2462 if (wd < 0) 4516 if (wd < 0)
2463 return; 4517 return;
2464 4518
2465 w->wd = -2; 4519 w->wd = -2;
2466 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4520 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2467 wlist_del (&fs_hash [slot].head, (WL)w); 4521 wlist_del (&fs_hash [slot].head, (WL)w);
2468 4522
2469 /* remove this watcher, if others are watching it, they will rearm */ 4523 /* remove this watcher, if others are watching it, they will rearm */
2470 inotify_rm_watch (fs_fd, wd); 4524 inotify_rm_watch (fs_fd, wd);
2471} 4525}
2472 4526
2473static void noinline 4527ecb_noinline
4528static void
2474infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4529infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2475{ 4530{
2476 if (slot < 0) 4531 if (slot < 0)
2477 /* overflow, need to check for all hahs slots */ 4532 /* overflow, need to check for all hash slots */
2478 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4533 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2479 infy_wd (EV_A_ slot, wd, ev); 4534 infy_wd (EV_A_ slot, wd, ev);
2480 else 4535 else
2481 { 4536 {
2482 WL w_; 4537 WL w_;
2483 4538
2484 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4539 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2485 { 4540 {
2486 ev_stat *w = (ev_stat *)w_; 4541 ev_stat *w = (ev_stat *)w_;
2487 w_ = w_->next; /* lets us remove this watcher and all before it */ 4542 w_ = w_->next; /* lets us remove this watcher and all before it */
2488 4543
2489 if (w->wd == wd || wd == -1) 4544 if (w->wd == wd || wd == -1)
2490 { 4545 {
2491 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4546 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2492 { 4547 {
4548 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2493 w->wd = -1; 4549 w->wd = -1;
2494 infy_add (EV_A_ w); /* re-add, no matter what */ 4550 infy_add (EV_A_ w); /* re-add, no matter what */
2495 } 4551 }
2496 4552
2497 stat_timer_cb (EV_A_ &w->timer, 0); 4553 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2502 4558
2503static void 4559static void
2504infy_cb (EV_P_ ev_io *w, int revents) 4560infy_cb (EV_P_ ev_io *w, int revents)
2505{ 4561{
2506 char buf [EV_INOTIFY_BUFSIZE]; 4562 char buf [EV_INOTIFY_BUFSIZE];
2507 struct inotify_event *ev = (struct inotify_event *)buf;
2508 int ofs; 4563 int ofs;
2509 int len = read (fs_fd, buf, sizeof (buf)); 4564 int len = read (fs_fd, buf, sizeof (buf));
2510 4565
2511 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4566 for (ofs = 0; ofs < len; )
4567 {
4568 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2512 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4569 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4570 ofs += sizeof (struct inotify_event) + ev->len;
4571 }
2513} 4572}
2514 4573
2515void inline_size 4574inline_size ecb_cold
4575void
4576ev_check_2625 (EV_P)
4577{
4578 /* kernels < 2.6.25 are borked
4579 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4580 */
4581 if (ev_linux_version () < 0x020619)
4582 return;
4583
4584 fs_2625 = 1;
4585}
4586
4587inline_size int
4588infy_newfd (void)
4589{
4590#if defined IN_CLOEXEC && defined IN_NONBLOCK
4591 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4592 if (fd >= 0)
4593 return fd;
4594#endif
4595 return inotify_init ();
4596}
4597
4598inline_size void
2516infy_init (EV_P) 4599infy_init (EV_P)
2517{ 4600{
2518 if (fs_fd != -2) 4601 if (fs_fd != -2)
2519 return; 4602 return;
2520 4603
4604 fs_fd = -1;
4605
4606 ev_check_2625 (EV_A);
4607
2521 fs_fd = inotify_init (); 4608 fs_fd = infy_newfd ();
2522 4609
2523 if (fs_fd >= 0) 4610 if (fs_fd >= 0)
2524 { 4611 {
4612 fd_intern (fs_fd);
2525 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4613 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2526 ev_set_priority (&fs_w, EV_MAXPRI); 4614 ev_set_priority (&fs_w, EV_MAXPRI);
2527 ev_io_start (EV_A_ &fs_w); 4615 ev_io_start (EV_A_ &fs_w);
4616 ev_unref (EV_A);
2528 } 4617 }
2529} 4618}
2530 4619
2531void inline_size 4620inline_size void
2532infy_fork (EV_P) 4621infy_fork (EV_P)
2533{ 4622{
2534 int slot; 4623 int slot;
2535 4624
2536 if (fs_fd < 0) 4625 if (fs_fd < 0)
2537 return; 4626 return;
2538 4627
4628 ev_ref (EV_A);
4629 ev_io_stop (EV_A_ &fs_w);
2539 close (fs_fd); 4630 close (fs_fd);
2540 fs_fd = inotify_init (); 4631 fs_fd = infy_newfd ();
2541 4632
4633 if (fs_fd >= 0)
4634 {
4635 fd_intern (fs_fd);
4636 ev_io_set (&fs_w, fs_fd, EV_READ);
4637 ev_io_start (EV_A_ &fs_w);
4638 ev_unref (EV_A);
4639 }
4640
2542 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4641 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2543 { 4642 {
2544 WL w_ = fs_hash [slot].head; 4643 WL w_ = fs_hash [slot].head;
2545 fs_hash [slot].head = 0; 4644 fs_hash [slot].head = 0;
2546 4645
2547 while (w_) 4646 while (w_)
… …
2552 w->wd = -1; 4651 w->wd = -1;
2553 4652
2554 if (fs_fd >= 0) 4653 if (fs_fd >= 0)
2555 infy_add (EV_A_ w); /* re-add, no matter what */ 4654 infy_add (EV_A_ w); /* re-add, no matter what */
2556 else 4655 else
4656 {
4657 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4658 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2557 ev_timer_start (EV_A_ &w->timer); 4659 ev_timer_again (EV_A_ &w->timer);
4660 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4661 }
2558 } 4662 }
2559
2560 } 4663 }
2561} 4664}
2562 4665
2563#endif 4666#endif
2564 4667
4668#ifdef _WIN32
4669# define EV_LSTAT(p,b) _stati64 (p, b)
4670#else
4671# define EV_LSTAT(p,b) lstat (p, b)
4672#endif
4673
2565void 4674void
2566ev_stat_stat (EV_P_ ev_stat *w) 4675ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2567{ 4676{
2568 if (lstat (w->path, &w->attr) < 0) 4677 if (lstat (w->path, &w->attr) < 0)
2569 w->attr.st_nlink = 0; 4678 w->attr.st_nlink = 0;
2570 else if (!w->attr.st_nlink) 4679 else if (!w->attr.st_nlink)
2571 w->attr.st_nlink = 1; 4680 w->attr.st_nlink = 1;
2572} 4681}
2573 4682
2574static void noinline 4683ecb_noinline
4684static void
2575stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4685stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2576{ 4686{
2577 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4687 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2578 4688
2579 /* we copy this here each the time so that */ 4689 ev_statdata prev = w->attr;
2580 /* prev has the old value when the callback gets invoked */
2581 w->prev = w->attr;
2582 ev_stat_stat (EV_A_ w); 4690 ev_stat_stat (EV_A_ w);
2583 4691
2584 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4692 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2585 if ( 4693 if (
2586 w->prev.st_dev != w->attr.st_dev 4694 prev.st_dev != w->attr.st_dev
2587 || w->prev.st_ino != w->attr.st_ino 4695 || prev.st_ino != w->attr.st_ino
2588 || w->prev.st_mode != w->attr.st_mode 4696 || prev.st_mode != w->attr.st_mode
2589 || w->prev.st_nlink != w->attr.st_nlink 4697 || prev.st_nlink != w->attr.st_nlink
2590 || w->prev.st_uid != w->attr.st_uid 4698 || prev.st_uid != w->attr.st_uid
2591 || w->prev.st_gid != w->attr.st_gid 4699 || prev.st_gid != w->attr.st_gid
2592 || w->prev.st_rdev != w->attr.st_rdev 4700 || prev.st_rdev != w->attr.st_rdev
2593 || w->prev.st_size != w->attr.st_size 4701 || prev.st_size != w->attr.st_size
2594 || w->prev.st_atime != w->attr.st_atime 4702 || prev.st_atime != w->attr.st_atime
2595 || w->prev.st_mtime != w->attr.st_mtime 4703 || prev.st_mtime != w->attr.st_mtime
2596 || w->prev.st_ctime != w->attr.st_ctime 4704 || prev.st_ctime != w->attr.st_ctime
2597 ) { 4705 ) {
4706 /* we only update w->prev on actual differences */
4707 /* in case we test more often than invoke the callback, */
4708 /* to ensure that prev is always different to attr */
4709 w->prev = prev;
4710
2598 #if EV_USE_INOTIFY 4711 #if EV_USE_INOTIFY
4712 if (fs_fd >= 0)
4713 {
2599 infy_del (EV_A_ w); 4714 infy_del (EV_A_ w);
2600 infy_add (EV_A_ w); 4715 infy_add (EV_A_ w);
2601 ev_stat_stat (EV_A_ w); /* avoid race... */ 4716 ev_stat_stat (EV_A_ w); /* avoid race... */
4717 }
2602 #endif 4718 #endif
2603 4719
2604 ev_feed_event (EV_A_ w, EV_STAT); 4720 ev_feed_event (EV_A_ w, EV_STAT);
2605 } 4721 }
2606} 4722}
2607 4723
2608void 4724void
2609ev_stat_start (EV_P_ ev_stat *w) 4725ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2610{ 4726{
2611 if (expect_false (ev_is_active (w))) 4727 if (ecb_expect_false (ev_is_active (w)))
2612 return; 4728 return;
2613 4729
2614 /* since we use memcmp, we need to clear any padding data etc. */
2615 memset (&w->prev, 0, sizeof (ev_statdata));
2616 memset (&w->attr, 0, sizeof (ev_statdata));
2617
2618 ev_stat_stat (EV_A_ w); 4730 ev_stat_stat (EV_A_ w);
2619 4731
4732 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2620 if (w->interval < MIN_STAT_INTERVAL) 4733 w->interval = MIN_STAT_INTERVAL;
2621 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2622 4734
2623 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 4735 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2624 ev_set_priority (&w->timer, ev_priority (w)); 4736 ev_set_priority (&w->timer, ev_priority (w));
2625 4737
2626#if EV_USE_INOTIFY 4738#if EV_USE_INOTIFY
2627 infy_init (EV_A); 4739 infy_init (EV_A);
2628 4740
2629 if (fs_fd >= 0) 4741 if (fs_fd >= 0)
2630 infy_add (EV_A_ w); 4742 infy_add (EV_A_ w);
2631 else 4743 else
2632#endif 4744#endif
4745 {
2633 ev_timer_start (EV_A_ &w->timer); 4746 ev_timer_again (EV_A_ &w->timer);
4747 ev_unref (EV_A);
4748 }
2634 4749
2635 ev_start (EV_A_ (W)w, 1); 4750 ev_start (EV_A_ (W)w, 1);
2636 4751
2637 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
2638} 4753}
2639 4754
2640void 4755void
2641ev_stat_stop (EV_P_ ev_stat *w) 4756ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2642{ 4757{
2643 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
2644 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
2645 return; 4760 return;
2646 4761
2647 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
2648 4763
2649#if EV_USE_INOTIFY 4764#if EV_USE_INOTIFY
2650 infy_del (EV_A_ w); 4765 infy_del (EV_A_ w);
2651#endif 4766#endif
4767
4768 if (ev_is_active (&w->timer))
4769 {
4770 ev_ref (EV_A);
2652 ev_timer_stop (EV_A_ &w->timer); 4771 ev_timer_stop (EV_A_ &w->timer);
4772 }
2653 4773
2654 ev_stop (EV_A_ (W)w); 4774 ev_stop (EV_A_ (W)w);
2655 4775
2656 EV_FREQUENT_CHECK; 4776 EV_FREQUENT_CHECK;
2657} 4777}
2658#endif 4778#endif
2659 4779
2660#if EV_IDLE_ENABLE 4780#if EV_IDLE_ENABLE
2661void 4781void
2662ev_idle_start (EV_P_ ev_idle *w) 4782ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2663{ 4783{
2664 if (expect_false (ev_is_active (w))) 4784 if (ecb_expect_false (ev_is_active (w)))
2665 return; 4785 return;
2666 4786
2667 pri_adjust (EV_A_ (W)w); 4787 pri_adjust (EV_A_ (W)w);
2668 4788
2669 EV_FREQUENT_CHECK; 4789 EV_FREQUENT_CHECK;
… …
2672 int active = ++idlecnt [ABSPRI (w)]; 4792 int active = ++idlecnt [ABSPRI (w)];
2673 4793
2674 ++idleall; 4794 ++idleall;
2675 ev_start (EV_A_ (W)w, active); 4795 ev_start (EV_A_ (W)w, active);
2676 4796
2677 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4797 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2678 idles [ABSPRI (w)][active - 1] = w; 4798 idles [ABSPRI (w)][active - 1] = w;
2679 } 4799 }
2680 4800
2681 EV_FREQUENT_CHECK; 4801 EV_FREQUENT_CHECK;
2682} 4802}
2683 4803
2684void 4804void
2685ev_idle_stop (EV_P_ ev_idle *w) 4805ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2686{ 4806{
2687 clear_pending (EV_A_ (W)w); 4807 clear_pending (EV_A_ (W)w);
2688 if (expect_false (!ev_is_active (w))) 4808 if (ecb_expect_false (!ev_is_active (w)))
2689 return; 4809 return;
2690 4810
2691 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
2692 4812
2693 { 4813 {
… …
2702 4822
2703 EV_FREQUENT_CHECK; 4823 EV_FREQUENT_CHECK;
2704} 4824}
2705#endif 4825#endif
2706 4826
4827#if EV_PREPARE_ENABLE
2707void 4828void
2708ev_prepare_start (EV_P_ ev_prepare *w) 4829ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2709{ 4830{
2710 if (expect_false (ev_is_active (w))) 4831 if (ecb_expect_false (ev_is_active (w)))
2711 return; 4832 return;
2712 4833
2713 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
2714 4835
2715 ev_start (EV_A_ (W)w, ++preparecnt); 4836 ev_start (EV_A_ (W)w, ++preparecnt);
2716 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4837 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2717 prepares [preparecnt - 1] = w; 4838 prepares [preparecnt - 1] = w;
2718 4839
2719 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
2720} 4841}
2721 4842
2722void 4843void
2723ev_prepare_stop (EV_P_ ev_prepare *w) 4844ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2724{ 4845{
2725 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
2726 if (expect_false (!ev_is_active (w))) 4847 if (ecb_expect_false (!ev_is_active (w)))
2727 return; 4848 return;
2728 4849
2729 EV_FREQUENT_CHECK; 4850 EV_FREQUENT_CHECK;
2730 4851
2731 { 4852 {
… …
2737 4858
2738 ev_stop (EV_A_ (W)w); 4859 ev_stop (EV_A_ (W)w);
2739 4860
2740 EV_FREQUENT_CHECK; 4861 EV_FREQUENT_CHECK;
2741} 4862}
4863#endif
2742 4864
4865#if EV_CHECK_ENABLE
2743void 4866void
2744ev_check_start (EV_P_ ev_check *w) 4867ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2745{ 4868{
2746 if (expect_false (ev_is_active (w))) 4869 if (ecb_expect_false (ev_is_active (w)))
2747 return; 4870 return;
2748 4871
2749 EV_FREQUENT_CHECK; 4872 EV_FREQUENT_CHECK;
2750 4873
2751 ev_start (EV_A_ (W)w, ++checkcnt); 4874 ev_start (EV_A_ (W)w, ++checkcnt);
2752 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4875 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2753 checks [checkcnt - 1] = w; 4876 checks [checkcnt - 1] = w;
2754 4877
2755 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
2756} 4879}
2757 4880
2758void 4881void
2759ev_check_stop (EV_P_ ev_check *w) 4882ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2760{ 4883{
2761 clear_pending (EV_A_ (W)w); 4884 clear_pending (EV_A_ (W)w);
2762 if (expect_false (!ev_is_active (w))) 4885 if (ecb_expect_false (!ev_is_active (w)))
2763 return; 4886 return;
2764 4887
2765 EV_FREQUENT_CHECK; 4888 EV_FREQUENT_CHECK;
2766 4889
2767 { 4890 {
… …
2773 4896
2774 ev_stop (EV_A_ (W)w); 4897 ev_stop (EV_A_ (W)w);
2775 4898
2776 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
2777} 4900}
4901#endif
2778 4902
2779#if EV_EMBED_ENABLE 4903#if EV_EMBED_ENABLE
2780void noinline 4904ecb_noinline
4905void
2781ev_embed_sweep (EV_P_ ev_embed *w) 4906ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2782{ 4907{
2783 ev_loop (w->other, EVLOOP_NONBLOCK); 4908 ev_run (w->other, EVRUN_NOWAIT);
2784} 4909}
2785 4910
2786static void 4911static void
2787embed_io_cb (EV_P_ ev_io *io, int revents) 4912embed_io_cb (EV_P_ ev_io *io, int revents)
2788{ 4913{
2789 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4914 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2790 4915
2791 if (ev_cb (w)) 4916 if (ev_cb (w))
2792 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4917 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2793 else 4918 else
2794 ev_loop (w->other, EVLOOP_NONBLOCK); 4919 ev_run (w->other, EVRUN_NOWAIT);
2795} 4920}
2796 4921
2797static void 4922static void
2798embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4923embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2799{ 4924{
2800 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4925 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2801 4926
2802 { 4927 {
2803 struct ev_loop *loop = w->other; 4928 EV_P = w->other;
2804 4929
2805 while (fdchangecnt) 4930 while (fdchangecnt)
2806 { 4931 {
2807 fd_reify (EV_A); 4932 fd_reify (EV_A);
2808 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4933 ev_run (EV_A_ EVRUN_NOWAIT);
2809 } 4934 }
2810 } 4935 }
4936}
4937
4938static void
4939embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4940{
4941 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4942
4943 ev_embed_stop (EV_A_ w);
4944
4945 {
4946 EV_P = w->other;
4947
4948 ev_loop_fork (EV_A);
4949 ev_run (EV_A_ EVRUN_NOWAIT);
4950 }
4951
4952 ev_embed_start (EV_A_ w);
2811} 4953}
2812 4954
2813#if 0 4955#if 0
2814static void 4956static void
2815embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4957embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2817 ev_idle_stop (EV_A_ idle); 4959 ev_idle_stop (EV_A_ idle);
2818} 4960}
2819#endif 4961#endif
2820 4962
2821void 4963void
2822ev_embed_start (EV_P_ ev_embed *w) 4964ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
2823{ 4965{
2824 if (expect_false (ev_is_active (w))) 4966 if (ecb_expect_false (ev_is_active (w)))
2825 return; 4967 return;
2826 4968
2827 { 4969 {
2828 struct ev_loop *loop = w->other; 4970 EV_P = w->other;
2829 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4971 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2830 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4972 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2831 } 4973 }
2832 4974
2833 EV_FREQUENT_CHECK; 4975 EV_FREQUENT_CHECK;
2834 4976
… …
2837 4979
2838 ev_prepare_init (&w->prepare, embed_prepare_cb); 4980 ev_prepare_init (&w->prepare, embed_prepare_cb);
2839 ev_set_priority (&w->prepare, EV_MINPRI); 4981 ev_set_priority (&w->prepare, EV_MINPRI);
2840 ev_prepare_start (EV_A_ &w->prepare); 4982 ev_prepare_start (EV_A_ &w->prepare);
2841 4983
4984 ev_fork_init (&w->fork, embed_fork_cb);
4985 ev_fork_start (EV_A_ &w->fork);
4986
2842 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4987 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2843 4988
2844 ev_start (EV_A_ (W)w, 1); 4989 ev_start (EV_A_ (W)w, 1);
2845 4990
2846 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
2847} 4992}
2848 4993
2849void 4994void
2850ev_embed_stop (EV_P_ ev_embed *w) 4995ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
2851{ 4996{
2852 clear_pending (EV_A_ (W)w); 4997 clear_pending (EV_A_ (W)w);
2853 if (expect_false (!ev_is_active (w))) 4998 if (ecb_expect_false (!ev_is_active (w)))
2854 return; 4999 return;
2855 5000
2856 EV_FREQUENT_CHECK; 5001 EV_FREQUENT_CHECK;
2857 5002
2858 ev_io_stop (EV_A_ &w->io); 5003 ev_io_stop (EV_A_ &w->io);
2859 ev_prepare_stop (EV_A_ &w->prepare); 5004 ev_prepare_stop (EV_A_ &w->prepare);
5005 ev_fork_stop (EV_A_ &w->fork);
2860 5006
2861 ev_stop (EV_A_ (W)w); 5007 ev_stop (EV_A_ (W)w);
2862 5008
2863 EV_FREQUENT_CHECK; 5009 EV_FREQUENT_CHECK;
2864} 5010}
2865#endif 5011#endif
2866 5012
2867#if EV_FORK_ENABLE 5013#if EV_FORK_ENABLE
2868void 5014void
2869ev_fork_start (EV_P_ ev_fork *w) 5015ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
2870{ 5016{
2871 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
2872 return; 5018 return;
2873 5019
2874 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
2875 5021
2876 ev_start (EV_A_ (W)w, ++forkcnt); 5022 ev_start (EV_A_ (W)w, ++forkcnt);
2877 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5023 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
2878 forks [forkcnt - 1] = w; 5024 forks [forkcnt - 1] = w;
2879 5025
2880 EV_FREQUENT_CHECK; 5026 EV_FREQUENT_CHECK;
2881} 5027}
2882 5028
2883void 5029void
2884ev_fork_stop (EV_P_ ev_fork *w) 5030ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
2885{ 5031{
2886 clear_pending (EV_A_ (W)w); 5032 clear_pending (EV_A_ (W)w);
2887 if (expect_false (!ev_is_active (w))) 5033 if (ecb_expect_false (!ev_is_active (w)))
2888 return; 5034 return;
2889 5035
2890 EV_FREQUENT_CHECK; 5036 EV_FREQUENT_CHECK;
2891 5037
2892 { 5038 {
… …
2900 5046
2901 EV_FREQUENT_CHECK; 5047 EV_FREQUENT_CHECK;
2902} 5048}
2903#endif 5049#endif
2904 5050
5051#if EV_CLEANUP_ENABLE
5052void
5053ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5054{
5055 if (ecb_expect_false (ev_is_active (w)))
5056 return;
5057
5058 EV_FREQUENT_CHECK;
5059
5060 ev_start (EV_A_ (W)w, ++cleanupcnt);
5061 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5062 cleanups [cleanupcnt - 1] = w;
5063
5064 /* cleanup watchers should never keep a refcount on the loop */
5065 ev_unref (EV_A);
5066 EV_FREQUENT_CHECK;
5067}
5068
5069void
5070ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5071{
5072 clear_pending (EV_A_ (W)w);
5073 if (ecb_expect_false (!ev_is_active (w)))
5074 return;
5075
5076 EV_FREQUENT_CHECK;
5077 ev_ref (EV_A);
5078
5079 {
5080 int active = ev_active (w);
5081
5082 cleanups [active - 1] = cleanups [--cleanupcnt];
5083 ev_active (cleanups [active - 1]) = active;
5084 }
5085
5086 ev_stop (EV_A_ (W)w);
5087
5088 EV_FREQUENT_CHECK;
5089}
5090#endif
5091
2905#if EV_ASYNC_ENABLE 5092#if EV_ASYNC_ENABLE
2906void 5093void
2907ev_async_start (EV_P_ ev_async *w) 5094ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
2908{ 5095{
2909 if (expect_false (ev_is_active (w))) 5096 if (ecb_expect_false (ev_is_active (w)))
2910 return; 5097 return;
2911 5098
5099 w->sent = 0;
5100
2912 evpipe_init (EV_A); 5101 evpipe_init (EV_A);
2913 5102
2914 EV_FREQUENT_CHECK; 5103 EV_FREQUENT_CHECK;
2915 5104
2916 ev_start (EV_A_ (W)w, ++asynccnt); 5105 ev_start (EV_A_ (W)w, ++asynccnt);
2917 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5106 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
2918 asyncs [asynccnt - 1] = w; 5107 asyncs [asynccnt - 1] = w;
2919 5108
2920 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
2921} 5110}
2922 5111
2923void 5112void
2924ev_async_stop (EV_P_ ev_async *w) 5113ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
2925{ 5114{
2926 clear_pending (EV_A_ (W)w); 5115 clear_pending (EV_A_ (W)w);
2927 if (expect_false (!ev_is_active (w))) 5116 if (ecb_expect_false (!ev_is_active (w)))
2928 return; 5117 return;
2929 5118
2930 EV_FREQUENT_CHECK; 5119 EV_FREQUENT_CHECK;
2931 5120
2932 { 5121 {
… …
2940 5129
2941 EV_FREQUENT_CHECK; 5130 EV_FREQUENT_CHECK;
2942} 5131}
2943 5132
2944void 5133void
2945ev_async_send (EV_P_ ev_async *w) 5134ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
2946{ 5135{
2947 w->sent = 1; 5136 w->sent = 1;
2948 evpipe_write (EV_A_ &gotasync); 5137 evpipe_write (EV_A_ &async_pending);
2949} 5138}
2950#endif 5139#endif
2951 5140
2952/*****************************************************************************/ 5141/*****************************************************************************/
2953 5142
… …
2963once_cb (EV_P_ struct ev_once *once, int revents) 5152once_cb (EV_P_ struct ev_once *once, int revents)
2964{ 5153{
2965 void (*cb)(int revents, void *arg) = once->cb; 5154 void (*cb)(int revents, void *arg) = once->cb;
2966 void *arg = once->arg; 5155 void *arg = once->arg;
2967 5156
2968 ev_io_stop (EV_A_ &once->io); 5157 ev_io_stop (EV_A_ &once->io);
2969 ev_timer_stop (EV_A_ &once->to); 5158 ev_timer_stop (EV_A_ &once->to);
2970 ev_free (once); 5159 ev_free (once);
2971 5160
2972 cb (revents, arg); 5161 cb (revents, arg);
2973} 5162}
2974 5163
2975static void 5164static void
2976once_cb_io (EV_P_ ev_io *w, int revents) 5165once_cb_io (EV_P_ ev_io *w, int revents)
2977{ 5166{
2978 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 5167 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
5168
5169 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2979} 5170}
2980 5171
2981static void 5172static void
2982once_cb_to (EV_P_ ev_timer *w, int revents) 5173once_cb_to (EV_P_ ev_timer *w, int revents)
2983{ 5174{
2984 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 5175 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
2985}
2986 5176
5177 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
5178}
5179
2987void 5180void
2988ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5181ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
2989{ 5182{
2990 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5183 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2991
2992 if (expect_false (!once))
2993 {
2994 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
2995 return;
2996 }
2997 5184
2998 once->cb = cb; 5185 once->cb = cb;
2999 once->arg = arg; 5186 once->arg = arg;
3000 5187
3001 ev_init (&once->io, once_cb_io); 5188 ev_init (&once->io, once_cb_io);
… …
3011 ev_timer_set (&once->to, timeout, 0.); 5198 ev_timer_set (&once->to, timeout, 0.);
3012 ev_timer_start (EV_A_ &once->to); 5199 ev_timer_start (EV_A_ &once->to);
3013 } 5200 }
3014} 5201}
3015 5202
5203/*****************************************************************************/
5204
5205#if EV_WALK_ENABLE
5206ecb_cold
5207void
5208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
5209{
5210 int i, j;
5211 ev_watcher_list *wl, *wn;
5212
5213 if (types & (EV_IO | EV_EMBED))
5214 for (i = 0; i < anfdmax; ++i)
5215 for (wl = anfds [i].head; wl; )
5216 {
5217 wn = wl->next;
5218
5219#if EV_EMBED_ENABLE
5220 if (ev_cb ((ev_io *)wl) == embed_io_cb)
5221 {
5222 if (types & EV_EMBED)
5223 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
5224 }
5225 else
5226#endif
5227#if EV_USE_INOTIFY
5228 if (ev_cb ((ev_io *)wl) == infy_cb)
5229 ;
5230 else
5231#endif
5232 if ((ev_io *)wl != &pipe_w)
5233 if (types & EV_IO)
5234 cb (EV_A_ EV_IO, wl);
5235
5236 wl = wn;
5237 }
5238
5239 if (types & (EV_TIMER | EV_STAT))
5240 for (i = timercnt + HEAP0; i-- > HEAP0; )
5241#if EV_STAT_ENABLE
5242 /*TODO: timer is not always active*/
5243 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
5244 {
5245 if (types & EV_STAT)
5246 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
5247 }
5248 else
5249#endif
5250 if (types & EV_TIMER)
5251 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
5252
5253#if EV_PERIODIC_ENABLE
5254 if (types & EV_PERIODIC)
5255 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
5256 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
5257#endif
5258
5259#if EV_IDLE_ENABLE
5260 if (types & EV_IDLE)
5261 for (j = NUMPRI; j--; )
5262 for (i = idlecnt [j]; i--; )
5263 cb (EV_A_ EV_IDLE, idles [j][i]);
5264#endif
5265
5266#if EV_FORK_ENABLE
5267 if (types & EV_FORK)
5268 for (i = forkcnt; i--; )
5269 if (ev_cb (forks [i]) != embed_fork_cb)
5270 cb (EV_A_ EV_FORK, forks [i]);
5271#endif
5272
5273#if EV_ASYNC_ENABLE
5274 if (types & EV_ASYNC)
5275 for (i = asynccnt; i--; )
5276 cb (EV_A_ EV_ASYNC, asyncs [i]);
5277#endif
5278
5279#if EV_PREPARE_ENABLE
5280 if (types & EV_PREPARE)
5281 for (i = preparecnt; i--; )
5282# if EV_EMBED_ENABLE
5283 if (ev_cb (prepares [i]) != embed_prepare_cb)
5284# endif
5285 cb (EV_A_ EV_PREPARE, prepares [i]);
5286#endif
5287
5288#if EV_CHECK_ENABLE
5289 if (types & EV_CHECK)
5290 for (i = checkcnt; i--; )
5291 cb (EV_A_ EV_CHECK, checks [i]);
5292#endif
5293
5294#if EV_SIGNAL_ENABLE
5295 if (types & EV_SIGNAL)
5296 for (i = 0; i < EV_NSIG - 1; ++i)
5297 for (wl = signals [i].head; wl; )
5298 {
5299 wn = wl->next;
5300 cb (EV_A_ EV_SIGNAL, wl);
5301 wl = wn;
5302 }
5303#endif
5304
5305#if EV_CHILD_ENABLE
5306 if (types & EV_CHILD)
5307 for (i = (EV_PID_HASHSIZE); i--; )
5308 for (wl = childs [i]; wl; )
5309 {
5310 wn = wl->next;
5311 cb (EV_A_ EV_CHILD, wl);
5312 wl = wn;
5313 }
5314#endif
5315/* EV_STAT 0x00001000 /* stat data changed */
5316/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
5317}
5318#endif
5319
3016#if EV_MULTIPLICITY 5320#if EV_MULTIPLICITY
3017 #include "ev_wrap.h" 5321 #include "ev_wrap.h"
3018#endif 5322#endif
3019 5323
3020#ifdef __cplusplus
3021}
3022#endif
3023

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