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Comparing libev/ev.c (file contents):
Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC vs.
Revision 1.491 by root, Thu Jun 20 23:14:53 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
112# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
114# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# else
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
126# endif 136# endif
127 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
128# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
130# define EV_USE_INOTIFY 1
131# else
132# define EV_USE_INOTIFY 0
133# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
134# endif 145# endif
135 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_INOTIFY
137# if HAVE_EVENTFD 149# define EV_USE_INOTIFY EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
154# endif
155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
157# ifndef EV_USE_SIGNALFD
158# define EV_USE_SIGNALFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_SIGNALFD
162# define EV_USE_SIGNALFD 0
163# endif
164
165# if HAVE_EVENTFD
166# ifndef EV_USE_EVENTFD
167# define EV_USE_EVENTFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0
142# endif 172# endif
143 173
144#endif 174#endif
145 175
146#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
147#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
148#include <fcntl.h> 188#include <fcntl.h>
149#include <stddef.h> 189#include <stddef.h>
150 190
151#include <stdio.h> 191#include <stdio.h>
152 192
153#include <assert.h> 193#include <assert.h>
154#include <errno.h> 194#include <errno.h>
155#include <sys/types.h> 195#include <sys/types.h>
156#include <time.h> 196#include <time.h>
197#include <limits.h>
157 198
158#include <signal.h> 199#include <signal.h>
159 200
160#ifdef EV_H 201#ifdef EV_H
161# include EV_H 202# include EV_H
162#else 203#else
163# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
164#endif 216#endif
165 217
166#ifndef _WIN32 218#ifndef _WIN32
167# include <sys/time.h> 219# include <sys/time.h>
168# include <sys/wait.h> 220# include <sys/wait.h>
169# include <unistd.h> 221# include <unistd.h>
170#else 222#else
171# include <io.h> 223# include <io.h>
172# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
173# include <windows.h> 226# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
176# endif 229# endif
230# undef EV_AVOID_STDIO
177#endif 231#endif
178 232
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
180 234
235/* try to deduce the maximum number of signals on this platform */
236#if defined EV_NSIG
237/* use what's provided */
238#elif defined NSIG
239# define EV_NSIG (NSIG)
240#elif defined _NSIG
241# define EV_NSIG (_NSIG)
242#elif defined SIGMAX
243# define EV_NSIG (SIGMAX+1)
244#elif defined SIG_MAX
245# define EV_NSIG (SIG_MAX+1)
246#elif defined _SIG_MAX
247# define EV_NSIG (_SIG_MAX+1)
248#elif defined MAXSIG
249# define EV_NSIG (MAXSIG+1)
250#elif defined MAX_SIG
251# define EV_NSIG (MAX_SIG+1)
252#elif defined SIGARRAYSIZE
253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
254#elif defined _sys_nsig
255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
256#else
257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
258#endif
259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
262#endif
263
181#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
183# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 267# else
185# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
186# endif 269# endif
187#endif 270#endif
188 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
189#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 284# else
193# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
194# endif 286# endif
195#endif 287#endif
196 288
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 291#endif
200 292
201#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 296# else
205# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
206# endif 298# endif
207#endif 299#endif
208 300
209#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 303#endif
212 304
213#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
214# ifdef _WIN32 306# ifdef _WIN32
215# define EV_USE_POLL 0 307# define EV_USE_POLL 0
216# else 308# else
217# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 310# endif
219#endif 311#endif
220 312
221#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 316# else
225# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
226# endif 318# endif
227#endif 319#endif
228 320
… …
232 324
233#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
234# define EV_USE_PORT 0 326# define EV_USE_PORT 0
235#endif 327#endif
236 328
329#ifndef EV_USE_LINUXAIO
330# define EV_USE_LINUXAIO 0
331#endif
332
237#ifndef EV_USE_INOTIFY 333#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 335# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 336# else
241# define EV_USE_INOTIFY 0 337# define EV_USE_INOTIFY 0
242# endif 338# endif
243#endif 339#endif
244 340
245#ifndef EV_PID_HASHSIZE 341#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 342# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 343#endif
252 344
253#ifndef EV_INOTIFY_HASHSIZE 345#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 346# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 347#endif
260 348
261#ifndef EV_USE_EVENTFD 349#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 350# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 351# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 352# else
265# define EV_USE_EVENTFD 0 353# define EV_USE_EVENTFD 0
354# endif
355#endif
356
357#ifndef EV_USE_SIGNALFD
358# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
359# define EV_USE_SIGNALFD EV_FEATURE_OS
360# else
361# define EV_USE_SIGNALFD 0
266# endif 362# endif
267#endif 363#endif
268 364
269#if 0 /* debugging */ 365#if 0 /* debugging */
270# define EV_VERIFY 3 366# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 367# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 368# define EV_HEAP_CACHE_AT 1
273#endif 369#endif
274 370
275#ifndef EV_VERIFY 371#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 372# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 373#endif
278 374
279#ifndef EV_USE_4HEAP 375#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 376# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 377#endif
282 378
283#ifndef EV_HEAP_CACHE_AT 379#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 380# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
381#endif
382
383#ifdef __ANDROID__
384/* supposedly, android doesn't typedef fd_mask */
385# undef EV_USE_SELECT
386# define EV_USE_SELECT 0
387/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
388# undef EV_USE_CLOCK_SYSCALL
389# define EV_USE_CLOCK_SYSCALL 0
390#endif
391
392/* aix's poll.h seems to cause lots of trouble */
393#ifdef _AIX
394/* AIX has a completely broken poll.h header */
395# undef EV_USE_POLL
396# define EV_USE_POLL 0
397#endif
398
399#if EV_USE_LINUXAIO
400# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
401#endif
402
403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
404/* which makes programs even slower. might work on other unices, too. */
405#if EV_USE_CLOCK_SYSCALL
406# include <sys/syscall.h>
407# ifdef SYS_clock_gettime
408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
409# undef EV_USE_MONOTONIC
410# define EV_USE_MONOTONIC 1
411# else
412# undef EV_USE_CLOCK_SYSCALL
413# define EV_USE_CLOCK_SYSCALL 0
414# endif
285#endif 415#endif
286 416
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288 418
289#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
… …
300# undef EV_USE_INOTIFY 430# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
302#endif 432#endif
303 433
304#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 437# include <sys/select.h>
307# endif 438# endif
308#endif 439#endif
309 440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
446# endif
447#endif
448
310#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 450# include <sys/statfs.h>
313# include <sys/inotify.h> 451# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
318# endif 456# endif
319#endif 457#endif
320 458
321#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h>
323#endif
324
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 461# include <stdint.h>
337# ifdef __cplusplus 462# ifndef EFD_NONBLOCK
338extern "C" { 463# define EFD_NONBLOCK O_NONBLOCK
339# endif 464# endif
340int eventfd (unsigned int initval, int flags); 465# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 466# ifdef O_CLOEXEC
342} 467# define EFD_CLOEXEC O_CLOEXEC
468# else
469# define EFD_CLOEXEC 02000000
470# endif
343# endif 471# endif
472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
473#endif
474
475#if EV_USE_SIGNALFD
476/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
477# include <stdint.h>
478# ifndef SFD_NONBLOCK
479# define SFD_NONBLOCK O_NONBLOCK
480# endif
481# ifndef SFD_CLOEXEC
482# ifdef O_CLOEXEC
483# define SFD_CLOEXEC O_CLOEXEC
484# else
485# define SFD_CLOEXEC 02000000
486# endif
487# endif
488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
489
490struct signalfd_siginfo
491{
492 uint32_t ssi_signo;
493 char pad[128 - sizeof (uint32_t)];
494};
344#endif 495#endif
345 496
346/**/ 497/**/
347 498
348#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 501#else
351# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
352#endif 503#endif
353 504
354/* 505/*
355 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 508 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 509#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
510/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 511
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 512#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 513#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 514
515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
517
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */
520/*
521 * libecb - http://software.schmorp.de/pkg/libecb
522 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved.
526 *
527 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met:
529 *
530 * 1. Redistributions of source code must retain the above copyright notice,
531 * this list of conditions and the following disclaimer.
532 *
533 * 2. Redistributions in binary form must reproduce the above copyright
534 * notice, this list of conditions and the following disclaimer in the
535 * documentation and/or other materials provided with the distribution.
536 *
537 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
538 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
539 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
540 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
541 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
558 */
559
560#ifndef ECB_H
561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010005
565
566#ifdef _WIN32
567 typedef signed char int8_t;
568 typedef unsigned char uint8_t;
569 typedef signed short int16_t;
570 typedef unsigned short uint16_t;
571 typedef signed int int32_t;
572 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 573 #if __GNUC__
574 typedef signed long long int64_t;
575 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t;
579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
589#else
590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
608#endif
609
610/* many compilers define _GNUC_ to some versions but then only implement
611 * what their idiot authors think are the "more important" extensions,
612 * causing enormous grief in return for some better fake benchmark numbers.
613 * or so.
614 * we try to detect these and simply assume they are not gcc - if they have
615 * an issue with that they should have done it right in the first place.
616 */
617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
618 #define ECB_GCC_VERSION(major,minor) 0
619#else
620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
662#endif
663
664/*****************************************************************************/
665
666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
668
669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #if __i386 || __i386__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
690 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
691 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
692 #elif ECB_GCC_AMD64
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
696 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
698 #elif defined __ARM_ARCH_2__ \
699 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
700 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
701 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
702 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
703 || defined __ARM_ARCH_5TEJ__
704 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
705 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
706 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
707 || defined __ARM_ARCH_6T2__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
709 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
710 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
712 #elif __aarch64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
714 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
716 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
718 #elif defined __s390__ || defined __s390x__
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
720 #elif defined __mips__
721 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
722 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
723 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
724 #elif defined __alpha__
725 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
726 #elif defined __hppa__
727 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
729 #elif defined __ia64__
730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
731 #elif defined __m68k__
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
733 #elif defined __m88k__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
735 #elif defined __sh__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
737 #endif
738 #endif
739#endif
740
741#ifndef ECB_MEMORY_FENCE
742 #if ECB_GCC_VERSION(4,7)
743 /* see comment below (stdatomic.h) about the C11 memory model. */
744 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
745 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
746 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
747
748 #elif ECB_CLANG_EXTENSION(c_atomic)
749 /* see comment below (stdatomic.h) about the C11 memory model. */
750 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
751 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
752 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
753
754 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
755 #define ECB_MEMORY_FENCE __sync_synchronize ()
756 #elif _MSC_VER >= 1500 /* VC++ 2008 */
757 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
758 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
759 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
760 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
761 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
762 #elif _MSC_VER >= 1400 /* VC++ 2005 */
763 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
764 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
765 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
766 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
767 #elif defined _WIN32
768 #include <WinNT.h>
769 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
770 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
771 #include <mbarrier.h>
772 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
773 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
774 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
775 #elif __xlC__
776 #define ECB_MEMORY_FENCE __sync ()
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
782 /* we assume that these memory fences work on all variables/all memory accesses, */
783 /* not just C11 atomics and atomic accesses */
784 #include <stdatomic.h>
785 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
786 /* any fence other than seq_cst, which isn't very efficient for us. */
787 /* Why that is, we don't know - either the C11 memory model is quite useless */
788 /* for most usages, or gcc and clang have a bug */
789 /* I *currently* lean towards the latter, and inefficiently implement */
790 /* all three of ecb's fences as a seq_cst fence */
791 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
792 /* for all __atomic_thread_fence's except seq_cst */
793 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
794 #endif
795#endif
796
797#ifndef ECB_MEMORY_FENCE
798 #if !ECB_AVOID_PTHREADS
799 /*
800 * if you get undefined symbol references to pthread_mutex_lock,
801 * or failure to find pthread.h, then you should implement
802 * the ECB_MEMORY_FENCE operations for your cpu/compiler
803 * OR provide pthread.h and link against the posix thread library
804 * of your system.
805 */
806 #include <pthread.h>
807 #define ECB_NEEDS_PTHREADS 1
808 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
809
810 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
811 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
812 #endif
813#endif
814
815#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
816 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
817#endif
818
819#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
820 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
821#endif
822
823/*****************************************************************************/
824
825#if ECB_CPP
826 #define ecb_inline static inline
827#elif ECB_GCC_VERSION(2,5)
828 #define ecb_inline static __inline__
829#elif ECB_C99
830 #define ecb_inline static inline
831#else
832 #define ecb_inline static
833#endif
834
835#if ECB_GCC_VERSION(3,3)
836 #define ecb_restrict __restrict__
837#elif ECB_C99
838 #define ecb_restrict restrict
839#else
840 #define ecb_restrict
841#endif
842
843typedef int ecb_bool;
844
845#define ECB_CONCAT_(a, b) a ## b
846#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
847#define ECB_STRINGIFY_(a) # a
848#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
849#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
850
851#define ecb_function_ ecb_inline
852
853#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
854 #define ecb_attribute(attrlist) __attribute__ (attrlist)
855#else
856 #define ecb_attribute(attrlist)
857#endif
858
859#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
860 #define ecb_is_constant(expr) __builtin_constant_p (expr)
861#else
862 /* possible C11 impl for integral types
863 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
864 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
865
866 #define ecb_is_constant(expr) 0
867#endif
868
869#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
369# define expect(expr,value) __builtin_expect ((expr),(value)) 870 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
370# define noinline __attribute__ ((noinline))
371#else 871#else
372# define expect(expr,value) (expr) 872 #define ecb_expect(expr,value) (expr)
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 873#endif
377#endif
378 874
875#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
876 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
877#else
878 #define ecb_prefetch(addr,rw,locality)
879#endif
880
881/* no emulation for ecb_decltype */
882#if ECB_CPP11
883 // older implementations might have problems with decltype(x)::type, work around it
884 template<class T> struct ecb_decltype_t { typedef T type; };
885 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
886#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
887 #define ecb_decltype(x) __typeof__ (x)
888#endif
889
890#if _MSC_VER >= 1300
891 #define ecb_deprecated __declspec (deprecated)
892#else
893 #define ecb_deprecated ecb_attribute ((__deprecated__))
894#endif
895
896#if _MSC_VER >= 1500
897 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
898#elif ECB_GCC_VERSION(4,5)
899 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
900#else
901 #define ecb_deprecated_message(msg) ecb_deprecated
902#endif
903
904#if _MSC_VER >= 1400
905 #define ecb_noinline __declspec (noinline)
906#else
907 #define ecb_noinline ecb_attribute ((__noinline__))
908#endif
909
910#define ecb_unused ecb_attribute ((__unused__))
911#define ecb_const ecb_attribute ((__const__))
912#define ecb_pure ecb_attribute ((__pure__))
913
914#if ECB_C11 || __IBMC_NORETURN
915 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
916 #define ecb_noreturn _Noreturn
917#elif ECB_CPP11
918 #define ecb_noreturn [[noreturn]]
919#elif _MSC_VER >= 1200
920 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
921 #define ecb_noreturn __declspec (noreturn)
922#else
923 #define ecb_noreturn ecb_attribute ((__noreturn__))
924#endif
925
926#if ECB_GCC_VERSION(4,3)
927 #define ecb_artificial ecb_attribute ((__artificial__))
928 #define ecb_hot ecb_attribute ((__hot__))
929 #define ecb_cold ecb_attribute ((__cold__))
930#else
931 #define ecb_artificial
932 #define ecb_hot
933 #define ecb_cold
934#endif
935
936/* put around conditional expressions if you are very sure that the */
937/* expression is mostly true or mostly false. note that these return */
938/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 939#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 940#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
941/* for compatibility to the rest of the world */
942#define ecb_likely(expr) ecb_expect_true (expr)
943#define ecb_unlikely(expr) ecb_expect_false (expr)
944
945/* count trailing zero bits and count # of one bits */
946#if ECB_GCC_VERSION(3,4) \
947 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
948 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
949 && ECB_CLANG_BUILTIN(__builtin_popcount))
950 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
951 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
952 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
953 #define ecb_ctz32(x) __builtin_ctz (x)
954 #define ecb_ctz64(x) __builtin_ctzll (x)
955 #define ecb_popcount32(x) __builtin_popcount (x)
956 /* no popcountll */
957#else
958 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
959 ecb_function_ ecb_const int
960 ecb_ctz32 (uint32_t x)
961 {
962#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
963 unsigned long r;
964 _BitScanForward (&r, x);
965 return (int)r;
966#else
967 int r = 0;
968
969 x &= ~x + 1; /* this isolates the lowest bit */
970
971#if ECB_branchless_on_i386
972 r += !!(x & 0xaaaaaaaa) << 0;
973 r += !!(x & 0xcccccccc) << 1;
974 r += !!(x & 0xf0f0f0f0) << 2;
975 r += !!(x & 0xff00ff00) << 3;
976 r += !!(x & 0xffff0000) << 4;
977#else
978 if (x & 0xaaaaaaaa) r += 1;
979 if (x & 0xcccccccc) r += 2;
980 if (x & 0xf0f0f0f0) r += 4;
981 if (x & 0xff00ff00) r += 8;
982 if (x & 0xffff0000) r += 16;
983#endif
984
985 return r;
986#endif
987 }
988
989 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
990 ecb_function_ ecb_const int
991 ecb_ctz64 (uint64_t x)
992 {
993#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanForward64 (&r, x);
996 return (int)r;
997#else
998 int shift = x & 0xffffffff ? 0 : 32;
999 return ecb_ctz32 (x >> shift) + shift;
1000#endif
1001 }
1002
1003 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1004 ecb_function_ ecb_const int
1005 ecb_popcount32 (uint32_t x)
1006 {
1007 x -= (x >> 1) & 0x55555555;
1008 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1009 x = ((x >> 4) + x) & 0x0f0f0f0f;
1010 x *= 0x01010101;
1011
1012 return x >> 24;
1013 }
1014
1015 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1016 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1017 {
1018#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1019 unsigned long r;
1020 _BitScanReverse (&r, x);
1021 return (int)r;
1022#else
1023 int r = 0;
1024
1025 if (x >> 16) { x >>= 16; r += 16; }
1026 if (x >> 8) { x >>= 8; r += 8; }
1027 if (x >> 4) { x >>= 4; r += 4; }
1028 if (x >> 2) { x >>= 2; r += 2; }
1029 if (x >> 1) { r += 1; }
1030
1031 return r;
1032#endif
1033 }
1034
1035 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1036 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1037 {
1038#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1039 unsigned long r;
1040 _BitScanReverse64 (&r, x);
1041 return (int)r;
1042#else
1043 int r = 0;
1044
1045 if (x >> 32) { x >>= 32; r += 32; }
1046
1047 return r + ecb_ld32 (x);
1048#endif
1049 }
1050#endif
1051
1052ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1053ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1054ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1056
1057ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1058ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1059{
1060 return ( (x * 0x0802U & 0x22110U)
1061 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1062}
1063
1064ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1065ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1066{
1067 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1068 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1069 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1070 x = ( x >> 8 ) | ( x << 8);
1071
1072 return x;
1073}
1074
1075ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1076ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1077{
1078 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1079 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1080 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1081 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1082 x = ( x >> 16 ) | ( x << 16);
1083
1084 return x;
1085}
1086
1087/* popcount64 is only available on 64 bit cpus as gcc builtin */
1088/* so for this version we are lazy */
1089ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1090ecb_function_ ecb_const int
1091ecb_popcount64 (uint64_t x)
1092{
1093 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1094}
1095
1096ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1097ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1098ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1099ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1100ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1101ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1102ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1103ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1104
1105ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1106ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1107ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1108ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1109ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1110ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1111ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1112ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1113
1114#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1115 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1116 #define ecb_bswap16(x) __builtin_bswap16 (x)
1117 #else
1118 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1119 #endif
1120 #define ecb_bswap32(x) __builtin_bswap32 (x)
1121 #define ecb_bswap64(x) __builtin_bswap64 (x)
1122#elif _MSC_VER
1123 #include <stdlib.h>
1124 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1125 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1126 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1127#else
1128 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1129 ecb_function_ ecb_const uint16_t
1130 ecb_bswap16 (uint16_t x)
1131 {
1132 return ecb_rotl16 (x, 8);
1133 }
1134
1135 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1136 ecb_function_ ecb_const uint32_t
1137 ecb_bswap32 (uint32_t x)
1138 {
1139 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1140 }
1141
1142 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1143 ecb_function_ ecb_const uint64_t
1144 ecb_bswap64 (uint64_t x)
1145 {
1146 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1147 }
1148#endif
1149
1150#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1151 #define ecb_unreachable() __builtin_unreachable ()
1152#else
1153 /* this seems to work fine, but gcc always emits a warning for it :/ */
1154 ecb_inline ecb_noreturn void ecb_unreachable (void);
1155 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1156#endif
1157
1158/* try to tell the compiler that some condition is definitely true */
1159#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1160
1161ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1162ecb_inline ecb_const uint32_t
1163ecb_byteorder_helper (void)
1164{
1165 /* the union code still generates code under pressure in gcc, */
1166 /* but less than using pointers, and always seems to */
1167 /* successfully return a constant. */
1168 /* the reason why we have this horrible preprocessor mess */
1169 /* is to avoid it in all cases, at least on common architectures */
1170 /* or when using a recent enough gcc version (>= 4.6) */
1171#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1172 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1173 #define ECB_LITTLE_ENDIAN 1
1174 return 0x44332211;
1175#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1176 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1177 #define ECB_BIG_ENDIAN 1
1178 return 0x11223344;
1179#else
1180 union
1181 {
1182 uint8_t c[4];
1183 uint32_t u;
1184 } u = { 0x11, 0x22, 0x33, 0x44 };
1185 return u.u;
1186#endif
1187}
1188
1189ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1190ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1191ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1193
1194#if ECB_GCC_VERSION(3,0) || ECB_C99
1195 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1196#else
1197 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1198#endif
1199
1200#if ECB_CPP
1201 template<typename T>
1202 static inline T ecb_div_rd (T val, T div)
1203 {
1204 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1205 }
1206 template<typename T>
1207 static inline T ecb_div_ru (T val, T div)
1208 {
1209 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1210 }
1211#else
1212 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1213 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1214#endif
1215
1216#if ecb_cplusplus_does_not_suck
1217 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1218 template<typename T, int N>
1219 static inline int ecb_array_length (const T (&arr)[N])
1220 {
1221 return N;
1222 }
1223#else
1224 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1225#endif
1226
1227ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1228ecb_function_ ecb_const uint32_t
1229ecb_binary16_to_binary32 (uint32_t x)
1230{
1231 unsigned int s = (x & 0x8000) << (31 - 15);
1232 int e = (x >> 10) & 0x001f;
1233 unsigned int m = x & 0x03ff;
1234
1235 if (ecb_expect_false (e == 31))
1236 /* infinity or NaN */
1237 e = 255 - (127 - 15);
1238 else if (ecb_expect_false (!e))
1239 {
1240 if (ecb_expect_true (!m))
1241 /* zero, handled by code below by forcing e to 0 */
1242 e = 0 - (127 - 15);
1243 else
1244 {
1245 /* subnormal, renormalise */
1246 unsigned int s = 10 - ecb_ld32 (m);
1247
1248 m = (m << s) & 0x3ff; /* mask implicit bit */
1249 e -= s - 1;
1250 }
1251 }
1252
1253 /* e and m now are normalised, or zero, (or inf or nan) */
1254 e += 127 - 15;
1255
1256 return s | (e << 23) | (m << (23 - 10));
1257}
1258
1259ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1260ecb_function_ ecb_const uint16_t
1261ecb_binary32_to_binary16 (uint32_t x)
1262{
1263 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1264 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1265 unsigned int m = x & 0x007fffff;
1266
1267 x &= 0x7fffffff;
1268
1269 /* if it's within range of binary16 normals, use fast path */
1270 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1271 {
1272 /* mantissa round-to-even */
1273 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1274
1275 /* handle overflow */
1276 if (ecb_expect_false (m >= 0x00800000))
1277 {
1278 m >>= 1;
1279 e += 1;
1280 }
1281
1282 return s | (e << 10) | (m >> (23 - 10));
1283 }
1284
1285 /* handle large numbers and infinity */
1286 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1287 return s | 0x7c00;
1288
1289 /* handle zero, subnormals and small numbers */
1290 if (ecb_expect_true (x < 0x38800000))
1291 {
1292 /* zero */
1293 if (ecb_expect_true (!x))
1294 return s;
1295
1296 /* handle subnormals */
1297
1298 /* too small, will be zero */
1299 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1300 return s;
1301
1302 m |= 0x00800000; /* make implicit bit explicit */
1303
1304 /* very tricky - we need to round to the nearest e (+10) bit value */
1305 {
1306 unsigned int bits = 14 - e;
1307 unsigned int half = (1 << (bits - 1)) - 1;
1308 unsigned int even = (m >> bits) & 1;
1309
1310 /* if this overflows, we will end up with a normalised number */
1311 m = (m + half + even) >> bits;
1312 }
1313
1314 return s | m;
1315 }
1316
1317 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1318 m >>= 13;
1319
1320 return s | 0x7c00 | m | !m;
1321}
1322
1323/*******************************************************************************/
1324/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1325
1326/* basically, everything uses "ieee pure-endian" floating point numbers */
1327/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1328#if 0 \
1329 || __i386 || __i386__ \
1330 || ECB_GCC_AMD64 \
1331 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1332 || defined __s390__ || defined __s390x__ \
1333 || defined __mips__ \
1334 || defined __alpha__ \
1335 || defined __hppa__ \
1336 || defined __ia64__ \
1337 || defined __m68k__ \
1338 || defined __m88k__ \
1339 || defined __sh__ \
1340 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1341 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1342 || defined __aarch64__
1343 #define ECB_STDFP 1
1344 #include <string.h> /* for memcpy */
1345#else
1346 #define ECB_STDFP 0
1347#endif
1348
1349#ifndef ECB_NO_LIBM
1350
1351 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1352
1353 /* only the oldest of old doesn't have this one. solaris. */
1354 #ifdef INFINITY
1355 #define ECB_INFINITY INFINITY
1356 #else
1357 #define ECB_INFINITY HUGE_VAL
1358 #endif
1359
1360 #ifdef NAN
1361 #define ECB_NAN NAN
1362 #else
1363 #define ECB_NAN ECB_INFINITY
1364 #endif
1365
1366 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1367 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1368 #define ecb_frexpf(x,e) frexpf ((x), (e))
1369 #else
1370 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1371 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1372 #endif
1373
1374 /* convert a float to ieee single/binary32 */
1375 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1376 ecb_function_ ecb_const uint32_t
1377 ecb_float_to_binary32 (float x)
1378 {
1379 uint32_t r;
1380
1381 #if ECB_STDFP
1382 memcpy (&r, &x, 4);
1383 #else
1384 /* slow emulation, works for anything but -0 */
1385 uint32_t m;
1386 int e;
1387
1388 if (x == 0e0f ) return 0x00000000U;
1389 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1390 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1391 if (x != x ) return 0x7fbfffffU;
1392
1393 m = ecb_frexpf (x, &e) * 0x1000000U;
1394
1395 r = m & 0x80000000U;
1396
1397 if (r)
1398 m = -m;
1399
1400 if (e <= -126)
1401 {
1402 m &= 0xffffffU;
1403 m >>= (-125 - e);
1404 e = -126;
1405 }
1406
1407 r |= (e + 126) << 23;
1408 r |= m & 0x7fffffU;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* converts an ieee single/binary32 to a float */
1415 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1416 ecb_function_ ecb_const float
1417 ecb_binary32_to_float (uint32_t x)
1418 {
1419 float r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* emulation, only works for normals and subnormals and +0 */
1425 int neg = x >> 31;
1426 int e = (x >> 23) & 0xffU;
1427
1428 x &= 0x7fffffU;
1429
1430 if (e)
1431 x |= 0x800000U;
1432 else
1433 e = 1;
1434
1435 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1436 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1437
1438 r = neg ? -r : r;
1439 #endif
1440
1441 return r;
1442 }
1443
1444 /* convert a double to ieee double/binary64 */
1445 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1446 ecb_function_ ecb_const uint64_t
1447 ecb_double_to_binary64 (double x)
1448 {
1449 uint64_t r;
1450
1451 #if ECB_STDFP
1452 memcpy (&r, &x, 8);
1453 #else
1454 /* slow emulation, works for anything but -0 */
1455 uint64_t m;
1456 int e;
1457
1458 if (x == 0e0 ) return 0x0000000000000000U;
1459 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1460 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1461 if (x != x ) return 0X7ff7ffffffffffffU;
1462
1463 m = frexp (x, &e) * 0x20000000000000U;
1464
1465 r = m & 0x8000000000000000;;
1466
1467 if (r)
1468 m = -m;
1469
1470 if (e <= -1022)
1471 {
1472 m &= 0x1fffffffffffffU;
1473 m >>= (-1021 - e);
1474 e = -1022;
1475 }
1476
1477 r |= ((uint64_t)(e + 1022)) << 52;
1478 r |= m & 0xfffffffffffffU;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* converts an ieee double/binary64 to a double */
1485 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1486 ecb_function_ ecb_const double
1487 ecb_binary64_to_double (uint64_t x)
1488 {
1489 double r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* emulation, only works for normals and subnormals and +0 */
1495 int neg = x >> 63;
1496 int e = (x >> 52) & 0x7ffU;
1497
1498 x &= 0xfffffffffffffU;
1499
1500 if (e)
1501 x |= 0x10000000000000U;
1502 else
1503 e = 1;
1504
1505 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1506 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1507
1508 r = neg ? -r : r;
1509 #endif
1510
1511 return r;
1512 }
1513
1514 /* convert a float to ieee half/binary16 */
1515 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1516 ecb_function_ ecb_const uint16_t
1517 ecb_float_to_binary16 (float x)
1518 {
1519 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1520 }
1521
1522 /* convert an ieee half/binary16 to float */
1523 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1524 ecb_function_ ecb_const float
1525 ecb_binary16_to_float (uint16_t x)
1526 {
1527 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1528 }
1529
1530#endif
1531
1532#endif
1533
1534/* ECB.H END */
1535
1536#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1537/* if your architecture doesn't need memory fences, e.g. because it is
1538 * single-cpu/core, or if you use libev in a project that doesn't use libev
1539 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1540 * libev, in which cases the memory fences become nops.
1541 * alternatively, you can remove this #error and link against libpthread,
1542 * which will then provide the memory fences.
1543 */
1544# error "memory fences not defined for your architecture, please report"
1545#endif
1546
1547#ifndef ECB_MEMORY_FENCE
1548# define ECB_MEMORY_FENCE do { } while (0)
1549# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1551#endif
1552
1553#define expect_false(cond) ecb_expect_false (cond)
1554#define expect_true(cond) ecb_expect_true (cond)
1555#define noinline ecb_noinline
1556
381#define inline_size static inline 1557#define inline_size ecb_inline
382 1558
383#if EV_MINIMAL 1559#if EV_FEATURE_CODE
384# define inline_speed static noinline
385#else
386# define inline_speed static inline 1560# define inline_speed ecb_inline
1561#else
1562# define inline_speed noinline static
387#endif 1563#endif
388 1564
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1565#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1566
1567#if EV_MINPRI == EV_MAXPRI
1568# define ABSPRI(w) (((W)w), 0)
1569#else
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1570# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1571#endif
391 1572
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1573#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */
394 1574
395typedef ev_watcher *W; 1575typedef ev_watcher *W;
396typedef ev_watcher_list *WL; 1576typedef ev_watcher_list *WL;
397typedef ev_watcher_time *WT; 1577typedef ev_watcher_time *WT;
398 1578
399#define ev_active(w) ((W)(w))->active 1579#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 1580#define ev_at(w) ((WT)(w))->at
401 1581
402#if EV_USE_REALTIME 1582#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1583/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 1584/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1585static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 1586#endif
407 1587
408#if EV_USE_MONOTONIC 1588#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1589static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 1590#endif
411 1591
1592#ifndef EV_FD_TO_WIN32_HANDLE
1593# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1594#endif
1595#ifndef EV_WIN32_HANDLE_TO_FD
1596# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1597#endif
1598#ifndef EV_WIN32_CLOSE_FD
1599# define EV_WIN32_CLOSE_FD(fd) close (fd)
1600#endif
1601
412#ifdef _WIN32 1602#ifdef _WIN32
413# include "ev_win32.c" 1603# include "ev_win32.c"
414#endif 1604#endif
415 1605
416/*****************************************************************************/ 1606/*****************************************************************************/
417 1607
1608/* define a suitable floor function (only used by periodics atm) */
1609
1610#if EV_USE_FLOOR
1611# include <math.h>
1612# define ev_floor(v) floor (v)
1613#else
1614
1615#include <float.h>
1616
1617/* a floor() replacement function, should be independent of ev_tstamp type */
1618noinline
1619static ev_tstamp
1620ev_floor (ev_tstamp v)
1621{
1622 /* the choice of shift factor is not terribly important */
1623#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1624 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1625#else
1626 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1627#endif
1628
1629 /* argument too large for an unsigned long? */
1630 if (expect_false (v >= shift))
1631 {
1632 ev_tstamp f;
1633
1634 if (v == v - 1.)
1635 return v; /* very large number */
1636
1637 f = shift * ev_floor (v * (1. / shift));
1638 return f + ev_floor (v - f);
1639 }
1640
1641 /* special treatment for negative args? */
1642 if (expect_false (v < 0.))
1643 {
1644 ev_tstamp f = -ev_floor (-v);
1645
1646 return f - (f == v ? 0 : 1);
1647 }
1648
1649 /* fits into an unsigned long */
1650 return (unsigned long)v;
1651}
1652
1653#endif
1654
1655/*****************************************************************************/
1656
1657#ifdef __linux
1658# include <sys/utsname.h>
1659#endif
1660
1661noinline ecb_cold
1662static unsigned int
1663ev_linux_version (void)
1664{
1665#ifdef __linux
1666 unsigned int v = 0;
1667 struct utsname buf;
1668 int i;
1669 char *p = buf.release;
1670
1671 if (uname (&buf))
1672 return 0;
1673
1674 for (i = 3+1; --i; )
1675 {
1676 unsigned int c = 0;
1677
1678 for (;;)
1679 {
1680 if (*p >= '0' && *p <= '9')
1681 c = c * 10 + *p++ - '0';
1682 else
1683 {
1684 p += *p == '.';
1685 break;
1686 }
1687 }
1688
1689 v = (v << 8) | c;
1690 }
1691
1692 return v;
1693#else
1694 return 0;
1695#endif
1696}
1697
1698/*****************************************************************************/
1699
1700#if EV_AVOID_STDIO
1701noinline ecb_cold
1702static void
1703ev_printerr (const char *msg)
1704{
1705 write (STDERR_FILENO, msg, strlen (msg));
1706}
1707#endif
1708
418static void (*syserr_cb)(const char *msg); 1709static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
419 1710
1711ecb_cold
420void 1712void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1713ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
422{ 1714{
423 syserr_cb = cb; 1715 syserr_cb = cb;
424} 1716}
425 1717
426static void noinline 1718noinline ecb_cold
1719static void
427ev_syserr (const char *msg) 1720ev_syserr (const char *msg)
428{ 1721{
429 if (!msg) 1722 if (!msg)
430 msg = "(libev) system error"; 1723 msg = "(libev) system error";
431 1724
432 if (syserr_cb) 1725 if (syserr_cb)
433 syserr_cb (msg); 1726 syserr_cb (msg);
434 else 1727 else
435 { 1728 {
1729#if EV_AVOID_STDIO
1730 ev_printerr (msg);
1731 ev_printerr (": ");
1732 ev_printerr (strerror (errno));
1733 ev_printerr ("\n");
1734#else
436 perror (msg); 1735 perror (msg);
1736#endif
437 abort (); 1737 abort ();
438 } 1738 }
439} 1739}
440 1740
441static void * 1741static void *
442ev_realloc_emul (void *ptr, long size) 1742ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
443{ 1743{
444 /* some systems, notably openbsd and darwin, fail to properly 1744 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1745 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1746 * the single unix specification, so work around them here.
1747 * recently, also (at least) fedora and debian started breaking it,
1748 * despite documenting it otherwise.
447 */ 1749 */
448 1750
449 if (size) 1751 if (size)
450 return realloc (ptr, size); 1752 return realloc (ptr, size);
451 1753
452 free (ptr); 1754 free (ptr);
453 return 0; 1755 return 0;
454} 1756}
455 1757
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1758static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
457 1759
1760ecb_cold
458void 1761void
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1762ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
460{ 1763{
461 alloc = cb; 1764 alloc = cb;
462} 1765}
463 1766
464inline_speed void * 1767inline_speed void *
… …
466{ 1769{
467 ptr = alloc (ptr, size); 1770 ptr = alloc (ptr, size);
468 1771
469 if (!ptr && size) 1772 if (!ptr && size)
470 { 1773 {
1774#if EV_AVOID_STDIO
1775 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1776#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1777 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1778#endif
472 abort (); 1779 abort ();
473 } 1780 }
474 1781
475 return ptr; 1782 return ptr;
476} 1783}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1785#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1786#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1787
481/*****************************************************************************/ 1788/*****************************************************************************/
482 1789
1790/* set in reify when reification needed */
1791#define EV_ANFD_REIFY 1
1792
483/* file descriptor info structure */ 1793/* file descriptor info structure */
484typedef struct 1794typedef struct
485{ 1795{
486 WL head; 1796 WL head;
487 unsigned char events; /* the events watched for */ 1797 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 1798 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1799 unsigned char emask; /* some backends store the actual kernel mask in here */
490 unsigned char unused; 1800 unsigned char unused;
491#if EV_USE_EPOLL 1801#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 1802 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 1803#endif
494#if EV_SELECT_IS_WINSOCKET 1804#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 1805 SOCKET handle;
1806#endif
1807#if EV_USE_IOCP
1808 OVERLAPPED or, ow;
496#endif 1809#endif
497} ANFD; 1810} ANFD;
498 1811
499/* stores the pending event set for a given watcher */ 1812/* stores the pending event set for a given watcher */
500typedef struct 1813typedef struct
… …
542 #undef VAR 1855 #undef VAR
543 }; 1856 };
544 #include "ev_wrap.h" 1857 #include "ev_wrap.h"
545 1858
546 static struct ev_loop default_loop_struct; 1859 static struct ev_loop default_loop_struct;
547 struct ev_loop *ev_default_loop_ptr; 1860 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
548 1861
549#else 1862#else
550 1863
551 ev_tstamp ev_rt_now; 1864 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
552 #define VAR(name,decl) static decl; 1865 #define VAR(name,decl) static decl;
553 #include "ev_vars.h" 1866 #include "ev_vars.h"
554 #undef VAR 1867 #undef VAR
555 1868
556 static int ev_default_loop_ptr; 1869 static int ev_default_loop_ptr;
557 1870
558#endif 1871#endif
559 1872
1873#if EV_FEATURE_API
1874# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1875# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1876# define EV_INVOKE_PENDING invoke_cb (EV_A)
1877#else
1878# define EV_RELEASE_CB (void)0
1879# define EV_ACQUIRE_CB (void)0
1880# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1881#endif
1882
1883#define EVBREAK_RECURSE 0x80
1884
560/*****************************************************************************/ 1885/*****************************************************************************/
561 1886
1887#ifndef EV_HAVE_EV_TIME
562ev_tstamp 1888ev_tstamp
563ev_time (void) 1889ev_time (void) EV_NOEXCEPT
564{ 1890{
565#if EV_USE_REALTIME 1891#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 1892 if (expect_true (have_realtime))
567 { 1893 {
568 struct timespec ts; 1894 struct timespec ts;
… …
573 1899
574 struct timeval tv; 1900 struct timeval tv;
575 gettimeofday (&tv, 0); 1901 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 1902 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 1903}
1904#endif
578 1905
579inline_size ev_tstamp 1906inline_size ev_tstamp
580get_clock (void) 1907get_clock (void)
581{ 1908{
582#if EV_USE_MONOTONIC 1909#if EV_USE_MONOTONIC
… …
591 return ev_time (); 1918 return ev_time ();
592} 1919}
593 1920
594#if EV_MULTIPLICITY 1921#if EV_MULTIPLICITY
595ev_tstamp 1922ev_tstamp
596ev_now (EV_P) 1923ev_now (EV_P) EV_NOEXCEPT
597{ 1924{
598 return ev_rt_now; 1925 return ev_rt_now;
599} 1926}
600#endif 1927#endif
601 1928
602void 1929void
603ev_sleep (ev_tstamp delay) 1930ev_sleep (ev_tstamp delay) EV_NOEXCEPT
604{ 1931{
605 if (delay > 0.) 1932 if (delay > 0.)
606 { 1933 {
607#if EV_USE_NANOSLEEP 1934#if EV_USE_NANOSLEEP
608 struct timespec ts; 1935 struct timespec ts;
609 1936
610 ts.tv_sec = (time_t)delay; 1937 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 1938 nanosleep (&ts, 0);
614#elif defined(_WIN32) 1939#elif defined _WIN32
1940 /* maybe this should round up, as ms is very low resolution */
1941 /* compared to select (µs) or nanosleep (ns) */
615 Sleep ((unsigned long)(delay * 1e3)); 1942 Sleep ((unsigned long)(delay * 1e3));
616#else 1943#else
617 struct timeval tv; 1944 struct timeval tv;
618 1945
619 tv.tv_sec = (time_t)delay;
620 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621
622 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1946 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1947 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 1948 /* by older ones */
1949 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 1950 select (0, 0, 0, 0, &tv);
626#endif 1951#endif
627 } 1952 }
628} 1953}
629 1954
630/*****************************************************************************/ 1955/*****************************************************************************/
631 1956
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1957#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 1958
634/* find a suitable new size for the given array, */ 1959/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 1960/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 1961inline_size int
637array_nextsize (int elem, int cur, int cnt) 1962array_nextsize (int elem, int cur, int cnt)
638{ 1963{
639 int ncur = cur + 1; 1964 int ncur = cur + 1;
640 1965
641 do 1966 do
642 ncur <<= 1; 1967 ncur <<= 1;
643 while (cnt > ncur); 1968 while (cnt > ncur);
644 1969
645 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1970 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
646 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1971 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
647 { 1972 {
648 ncur *= elem; 1973 ncur *= elem;
649 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1974 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
650 ncur = ncur - sizeof (void *) * 4; 1975 ncur = ncur - sizeof (void *) * 4;
… …
652 } 1977 }
653 1978
654 return ncur; 1979 return ncur;
655} 1980}
656 1981
657static noinline void * 1982noinline ecb_cold
1983static void *
658array_realloc (int elem, void *base, int *cur, int cnt) 1984array_realloc (int elem, void *base, int *cur, int cnt)
659{ 1985{
660 *cur = array_nextsize (elem, *cur, cnt); 1986 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 1987 return ev_realloc (base, elem * *cur);
662} 1988}
663 1989
1990#define array_needsize_noinit(base,count)
1991
664#define array_init_zero(base,count) \ 1992#define array_needsize_zerofill(base,count) \
665 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1993 memset ((void *)(base), 0, sizeof (*(base)) * (count))
666 1994
667#define array_needsize(type,base,cur,cnt,init) \ 1995#define array_needsize(type,base,cur,cnt,init) \
668 if (expect_false ((cnt) > (cur))) \ 1996 if (expect_false ((cnt) > (cur))) \
669 { \ 1997 { \
670 int ocur_ = (cur); \ 1998 ecb_unused int ocur_ = (cur); \
671 (base) = (type *)array_realloc \ 1999 (base) = (type *)array_realloc \
672 (sizeof (type), (base), &(cur), (cnt)); \ 2000 (sizeof (type), (base), &(cur), (cnt)); \
673 init ((base) + (ocur_), (cur) - ocur_); \ 2001 init ((base) + (ocur_), (cur) - ocur_); \
674 } 2002 }
675 2003
… …
687 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2015 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
688 2016
689/*****************************************************************************/ 2017/*****************************************************************************/
690 2018
691/* dummy callback for pending events */ 2019/* dummy callback for pending events */
692static void noinline 2020noinline
2021static void
693pendingcb (EV_P_ ev_prepare *w, int revents) 2022pendingcb (EV_P_ ev_prepare *w, int revents)
694{ 2023{
695} 2024}
696 2025
697void noinline 2026noinline
2027void
698ev_feed_event (EV_P_ void *w, int revents) 2028ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
699{ 2029{
700 W w_ = (W)w; 2030 W w_ = (W)w;
701 int pri = ABSPRI (w_); 2031 int pri = ABSPRI (w_);
702 2032
703 if (expect_false (w_->pending)) 2033 if (expect_false (w_->pending))
704 pendings [pri][w_->pending - 1].events |= revents; 2034 pendings [pri][w_->pending - 1].events |= revents;
705 else 2035 else
706 { 2036 {
707 w_->pending = ++pendingcnt [pri]; 2037 w_->pending = ++pendingcnt [pri];
708 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2038 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
709 pendings [pri][w_->pending - 1].w = w_; 2039 pendings [pri][w_->pending - 1].w = w_;
710 pendings [pri][w_->pending - 1].events = revents; 2040 pendings [pri][w_->pending - 1].events = revents;
711 } 2041 }
2042
2043 pendingpri = NUMPRI - 1;
712} 2044}
713 2045
714inline_speed void 2046inline_speed void
715feed_reverse (EV_P_ W w) 2047feed_reverse (EV_P_ W w)
716{ 2048{
717 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2049 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
718 rfeeds [rfeedcnt++] = w; 2050 rfeeds [rfeedcnt++] = w;
719} 2051}
720 2052
721inline_size void 2053inline_size void
722feed_reverse_done (EV_P_ int revents) 2054feed_reverse_done (EV_P_ int revents)
… …
736} 2068}
737 2069
738/*****************************************************************************/ 2070/*****************************************************************************/
739 2071
740inline_speed void 2072inline_speed void
741fd_event (EV_P_ int fd, int revents) 2073fd_event_nocheck (EV_P_ int fd, int revents)
742{ 2074{
743 ANFD *anfd = anfds + fd; 2075 ANFD *anfd = anfds + fd;
744 ev_io *w; 2076 ev_io *w;
745 2077
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2078 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 2082 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 2083 ev_feed_event (EV_A_ (W)w, ev);
752 } 2084 }
753} 2085}
754 2086
755void 2087/* do not submit kernel events for fds that have reify set */
2088/* because that means they changed while we were polling for new events */
2089inline_speed void
756ev_feed_fd_event (EV_P_ int fd, int revents) 2090fd_event (EV_P_ int fd, int revents)
2091{
2092 ANFD *anfd = anfds + fd;
2093
2094 if (expect_true (!anfd->reify))
2095 fd_event_nocheck (EV_A_ fd, revents);
2096}
2097
2098void
2099ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
757{ 2100{
758 if (fd >= 0 && fd < anfdmax) 2101 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 2102 fd_event_nocheck (EV_A_ fd, revents);
760} 2103}
761 2104
762/* make sure the external fd watch events are in-sync */ 2105/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 2106/* with the kernel/libev internal state */
764inline_size void 2107inline_size void
765fd_reify (EV_P) 2108fd_reify (EV_P)
766{ 2109{
767 int i; 2110 int i;
768 2111
2112#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2113 for (i = 0; i < fdchangecnt; ++i)
2114 {
2115 int fd = fdchanges [i];
2116 ANFD *anfd = anfds + fd;
2117
2118 if (anfd->reify & EV__IOFDSET && anfd->head)
2119 {
2120 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2121
2122 if (handle != anfd->handle)
2123 {
2124 unsigned long arg;
2125
2126 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2127
2128 /* handle changed, but fd didn't - we need to do it in two steps */
2129 backend_modify (EV_A_ fd, anfd->events, 0);
2130 anfd->events = 0;
2131 anfd->handle = handle;
2132 }
2133 }
2134 }
2135#endif
2136
769 for (i = 0; i < fdchangecnt; ++i) 2137 for (i = 0; i < fdchangecnt; ++i)
770 { 2138 {
771 int fd = fdchanges [i]; 2139 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 2140 ANFD *anfd = anfds + fd;
773 ev_io *w; 2141 ev_io *w;
774 2142
775 unsigned char events = 0; 2143 unsigned char o_events = anfd->events;
2144 unsigned char o_reify = anfd->reify;
776 2145
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2146 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 2147
780#if EV_SELECT_IS_WINSOCKET 2148 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 2149 {
783 unsigned long arg; 2150 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 2151
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2152 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 2153 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 2154
788 #endif 2155 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2156 o_reify = EV__IOFDSET; /* actually |= */
790 } 2157 }
791#endif
792 2158
793 { 2159 if (o_reify & EV__IOFDSET)
794 unsigned char o_events = anfd->events;
795 unsigned char o_reify = anfd->reify;
796
797 anfd->reify = 0;
798 anfd->events = events;
799
800 if (o_events != events || o_reify & EV__IOFDSET)
801 backend_modify (EV_A_ fd, o_events, events); 2160 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 2161 }
804 2162
805 fdchangecnt = 0; 2163 fdchangecnt = 0;
806} 2164}
807 2165
808/* something about the given fd changed */ 2166/* something about the given fd changed */
809inline_size void 2167inline_size
2168void
810fd_change (EV_P_ int fd, int flags) 2169fd_change (EV_P_ int fd, int flags)
811{ 2170{
812 unsigned char reify = anfds [fd].reify; 2171 unsigned char reify = anfds [fd].reify;
813 anfds [fd].reify |= flags; 2172 anfds [fd].reify |= flags;
814 2173
815 if (expect_true (!reify)) 2174 if (expect_true (!reify))
816 { 2175 {
817 ++fdchangecnt; 2176 ++fdchangecnt;
818 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2177 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
819 fdchanges [fdchangecnt - 1] = fd; 2178 fdchanges [fdchangecnt - 1] = fd;
820 } 2179 }
821} 2180}
822 2181
823/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2182/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
824inline_speed void 2183inline_speed ecb_cold void
825fd_kill (EV_P_ int fd) 2184fd_kill (EV_P_ int fd)
826{ 2185{
827 ev_io *w; 2186 ev_io *w;
828 2187
829 while ((w = (ev_io *)anfds [fd].head)) 2188 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 2190 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2191 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 2192 }
834} 2193}
835 2194
836/* check whether the given fd is atcually valid, for error recovery */ 2195/* check whether the given fd is actually valid, for error recovery */
837inline_size int 2196inline_size ecb_cold int
838fd_valid (int fd) 2197fd_valid (int fd)
839{ 2198{
840#ifdef _WIN32 2199#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 2200 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 2201#else
843 return fcntl (fd, F_GETFD) != -1; 2202 return fcntl (fd, F_GETFD) != -1;
844#endif 2203#endif
845} 2204}
846 2205
847/* called on EBADF to verify fds */ 2206/* called on EBADF to verify fds */
848static void noinline 2207noinline ecb_cold
2208static void
849fd_ebadf (EV_P) 2209fd_ebadf (EV_P)
850{ 2210{
851 int fd; 2211 int fd;
852 2212
853 for (fd = 0; fd < anfdmax; ++fd) 2213 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 2215 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 2216 fd_kill (EV_A_ fd);
857} 2217}
858 2218
859/* called on ENOMEM in select/poll to kill some fds and retry */ 2219/* called on ENOMEM in select/poll to kill some fds and retry */
860static void noinline 2220noinline ecb_cold
2221static void
861fd_enomem (EV_P) 2222fd_enomem (EV_P)
862{ 2223{
863 int fd; 2224 int fd;
864 2225
865 for (fd = anfdmax; fd--; ) 2226 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 2227 if (anfds [fd].events)
867 { 2228 {
868 fd_kill (EV_A_ fd); 2229 fd_kill (EV_A_ fd);
869 return; 2230 break;
870 } 2231 }
871} 2232}
872 2233
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 2234/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 2235noinline
2236static void
875fd_rearm_all (EV_P) 2237fd_rearm_all (EV_P)
876{ 2238{
877 int fd; 2239 int fd;
878 2240
879 for (fd = 0; fd < anfdmax; ++fd) 2241 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 2242 if (anfds [fd].events)
881 { 2243 {
882 anfds [fd].events = 0; 2244 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 2245 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2246 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 2247 }
886} 2248}
887 2249
2250/* used to prepare libev internal fd's */
2251/* this is not fork-safe */
2252inline_speed void
2253fd_intern (int fd)
2254{
2255#ifdef _WIN32
2256 unsigned long arg = 1;
2257 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2258#else
2259 fcntl (fd, F_SETFD, FD_CLOEXEC);
2260 fcntl (fd, F_SETFL, O_NONBLOCK);
2261#endif
2262}
2263
888/*****************************************************************************/ 2264/*****************************************************************************/
889 2265
890/* 2266/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 2267 * the heap functions want a real array index. array index 0 is guaranteed to not
892 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2268 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 2269 * the branching factor of the d-tree.
894 */ 2270 */
895 2271
896/* 2272/*
… …
964 2340
965 for (;;) 2341 for (;;)
966 { 2342 {
967 int c = k << 1; 2343 int c = k << 1;
968 2344
969 if (c > N + HEAP0 - 1) 2345 if (c >= N + HEAP0)
970 break; 2346 break;
971 2347
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2348 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 2349 ? 1 : 0;
974 2350
… …
1010 2386
1011/* move an element suitably so it is in a correct place */ 2387/* move an element suitably so it is in a correct place */
1012inline_size void 2388inline_size void
1013adjustheap (ANHE *heap, int N, int k) 2389adjustheap (ANHE *heap, int N, int k)
1014{ 2390{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2391 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 2392 upheap (heap, k);
1017 else 2393 else
1018 downheap (heap, N, k); 2394 downheap (heap, N, k);
1019} 2395}
1020 2396
… …
1033/*****************************************************************************/ 2409/*****************************************************************************/
1034 2410
1035/* associate signal watchers to a signal signal */ 2411/* associate signal watchers to a signal signal */
1036typedef struct 2412typedef struct
1037{ 2413{
2414 EV_ATOMIC_T pending;
2415#if EV_MULTIPLICITY
2416 EV_P;
2417#endif
1038 WL head; 2418 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 2419} ANSIG;
1041 2420
1042static ANSIG *signals; 2421static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 2422
1047/*****************************************************************************/ 2423/*****************************************************************************/
1048 2424
1049/* used to prepare libev internal fd's */ 2425#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */ 2426
2427noinline ecb_cold
2428static void
2429evpipe_init (EV_P)
2430{
2431 if (!ev_is_active (&pipe_w))
2432 {
2433 int fds [2];
2434
2435# if EV_USE_EVENTFD
2436 fds [0] = -1;
2437 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2438 if (fds [1] < 0 && errno == EINVAL)
2439 fds [1] = eventfd (0, 0);
2440
2441 if (fds [1] < 0)
2442# endif
2443 {
2444 while (pipe (fds))
2445 ev_syserr ("(libev) error creating signal/async pipe");
2446
2447 fd_intern (fds [0]);
2448 }
2449
2450 evpipe [0] = fds [0];
2451
2452 if (evpipe [1] < 0)
2453 evpipe [1] = fds [1]; /* first call, set write fd */
2454 else
2455 {
2456 /* on subsequent calls, do not change evpipe [1] */
2457 /* so that evpipe_write can always rely on its value. */
2458 /* this branch does not do anything sensible on windows, */
2459 /* so must not be executed on windows */
2460
2461 dup2 (fds [1], evpipe [1]);
2462 close (fds [1]);
2463 }
2464
2465 fd_intern (evpipe [1]);
2466
2467 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2468 ev_io_start (EV_A_ &pipe_w);
2469 ev_unref (EV_A); /* watcher should not keep loop alive */
2470 }
2471}
2472
1051inline_speed void 2473inline_speed void
1052fd_intern (int fd) 2474evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1053{ 2475{
1054#ifdef _WIN32 2476 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1055 unsigned long arg = 1;
1056 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1057#else
1058 fcntl (fd, F_SETFD, FD_CLOEXEC);
1059 fcntl (fd, F_SETFL, O_NONBLOCK);
1060#endif
1061}
1062 2477
1063static void noinline 2478 if (expect_true (*flag))
1064evpipe_init (EV_P) 2479 return;
1065{ 2480
1066 if (!ev_is_active (&pipe_w)) 2481 *flag = 1;
2482 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2483
2484 pipe_write_skipped = 1;
2485
2486 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2487
2488 if (pipe_write_wanted)
1067 { 2489 {
2490 int old_errno;
2491
2492 pipe_write_skipped = 0;
2493 ECB_MEMORY_FENCE_RELEASE;
2494
2495 old_errno = errno; /* save errno because write will clobber it */
2496
1068#if EV_USE_EVENTFD 2497#if EV_USE_EVENTFD
1069 if ((evfd = eventfd (0, 0)) >= 0) 2498 if (evpipe [0] < 0)
1070 { 2499 {
1071 evpipe [0] = -1; 2500 uint64_t counter = 1;
1072 fd_intern (evfd); 2501 write (evpipe [1], &counter, sizeof (uint64_t));
1073 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 2502 }
1075 else 2503 else
1076#endif 2504#endif
1077 { 2505 {
1078 while (pipe (evpipe)) 2506#ifdef _WIN32
1079 ev_syserr ("(libev) error creating signal/async pipe"); 2507 WSABUF buf;
1080 2508 DWORD sent;
1081 fd_intern (evpipe [0]); 2509 buf.buf = (char *)&buf;
1082 fd_intern (evpipe [1]); 2510 buf.len = 1;
1083 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2511 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2512#else
2513 write (evpipe [1], &(evpipe [1]), 1);
2514#endif
1084 } 2515 }
1085
1086 ev_io_start (EV_A_ &pipe_w);
1087 ev_unref (EV_A); /* watcher should not keep loop alive */
1088 }
1089}
1090
1091inline_size void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{
1094 if (!*flag)
1095 {
1096 int old_errno = errno; /* save errno because write might clobber it */
1097
1098 *flag = 1;
1099
1100#if EV_USE_EVENTFD
1101 if (evfd >= 0)
1102 {
1103 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t));
1105 }
1106 else
1107#endif
1108 write (evpipe [1], &old_errno, 1);
1109 2516
1110 errno = old_errno; 2517 errno = old_errno;
1111 } 2518 }
1112} 2519}
1113 2520
1114/* called whenever the libev signal pipe */ 2521/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 2522/* got some events (signal, async) */
1116static void 2523static void
1117pipecb (EV_P_ ev_io *iow, int revents) 2524pipecb (EV_P_ ev_io *iow, int revents)
1118{ 2525{
2526 int i;
2527
2528 if (revents & EV_READ)
2529 {
1119#if EV_USE_EVENTFD 2530#if EV_USE_EVENTFD
1120 if (evfd >= 0) 2531 if (evpipe [0] < 0)
1121 { 2532 {
1122 uint64_t counter; 2533 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 2534 read (evpipe [1], &counter, sizeof (uint64_t));
1124 } 2535 }
1125 else 2536 else
1126#endif 2537#endif
1127 { 2538 {
1128 char dummy; 2539 char dummy[4];
2540#ifdef _WIN32
2541 WSABUF buf;
2542 DWORD recvd;
2543 DWORD flags = 0;
2544 buf.buf = dummy;
2545 buf.len = sizeof (dummy);
2546 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2547#else
1129 read (evpipe [0], &dummy, 1); 2548 read (evpipe [0], &dummy, sizeof (dummy));
2549#endif
2550 }
2551 }
2552
2553 pipe_write_skipped = 0;
2554
2555 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2556
2557#if EV_SIGNAL_ENABLE
2558 if (sig_pending)
1130 } 2559 {
2560 sig_pending = 0;
1131 2561
1132 if (gotsig && ev_is_default_loop (EV_A)) 2562 ECB_MEMORY_FENCE;
1133 {
1134 int signum;
1135 gotsig = 0;
1136 2563
1137 for (signum = signalmax; signum--; ) 2564 for (i = EV_NSIG - 1; i--; )
1138 if (signals [signum].gotsig) 2565 if (expect_false (signals [i].pending))
1139 ev_feed_signal_event (EV_A_ signum + 1); 2566 ev_feed_signal_event (EV_A_ i + 1);
1140 } 2567 }
2568#endif
1141 2569
1142#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1143 if (gotasync) 2571 if (async_pending)
1144 { 2572 {
1145 int i; 2573 async_pending = 0;
1146 gotasync = 0; 2574
2575 ECB_MEMORY_FENCE;
1147 2576
1148 for (i = asynccnt; i--; ) 2577 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 2578 if (asyncs [i]->sent)
1150 { 2579 {
1151 asyncs [i]->sent = 0; 2580 asyncs [i]->sent = 0;
2581 ECB_MEMORY_FENCE_RELEASE;
1152 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2582 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1153 } 2583 }
1154 } 2584 }
1155#endif 2585#endif
1156} 2586}
1157 2587
1158/*****************************************************************************/ 2588/*****************************************************************************/
1159 2589
2590void
2591ev_feed_signal (int signum) EV_NOEXCEPT
2592{
2593#if EV_MULTIPLICITY
2594 EV_P;
2595 ECB_MEMORY_FENCE_ACQUIRE;
2596 EV_A = signals [signum - 1].loop;
2597
2598 if (!EV_A)
2599 return;
2600#endif
2601
2602 signals [signum - 1].pending = 1;
2603 evpipe_write (EV_A_ &sig_pending);
2604}
2605
1160static void 2606static void
1161ev_sighandler (int signum) 2607ev_sighandler (int signum)
1162{ 2608{
2609#ifdef _WIN32
2610 signal (signum, ev_sighandler);
2611#endif
2612
2613 ev_feed_signal (signum);
2614}
2615
2616noinline
2617void
2618ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2619{
2620 WL w;
2621
2622 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2623 return;
2624
2625 --signum;
2626
1163#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct; 2628 /* it is permissible to try to feed a signal to the wrong loop */
1165#endif 2629 /* or, likely more useful, feeding a signal nobody is waiting for */
1166 2630
1167#if _WIN32 2631 if (expect_false (signals [signum].loop != EV_A))
1168 signal (signum, ev_sighandler);
1169#endif
1170
1171 signals [signum - 1].gotsig = 1;
1172 evpipe_write (EV_A_ &gotsig);
1173}
1174
1175void noinline
1176ev_feed_signal_event (EV_P_ int signum)
1177{
1178 WL w;
1179
1180#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1182#endif
1183
1184 --signum;
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 2632 return;
2633#endif
1188 2634
1189 signals [signum].gotsig = 0; 2635 signals [signum].pending = 0;
2636 ECB_MEMORY_FENCE_RELEASE;
1190 2637
1191 for (w = signals [signum].head; w; w = w->next) 2638 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2639 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 2640}
1194 2641
2642#if EV_USE_SIGNALFD
2643static void
2644sigfdcb (EV_P_ ev_io *iow, int revents)
2645{
2646 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2647
2648 for (;;)
2649 {
2650 ssize_t res = read (sigfd, si, sizeof (si));
2651
2652 /* not ISO-C, as res might be -1, but works with SuS */
2653 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2654 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2655
2656 if (res < (ssize_t)sizeof (si))
2657 break;
2658 }
2659}
2660#endif
2661
2662#endif
2663
1195/*****************************************************************************/ 2664/*****************************************************************************/
1196 2665
2666#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 2667static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 2668
1201static ev_signal childev; 2669static ev_signal childev;
1202 2670
1203#ifndef WIFCONTINUED 2671#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 2672# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 2677child_reap (EV_P_ int chain, int pid, int status)
1210{ 2678{
1211 ev_child *w; 2679 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2680 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 2681
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2682 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 2683 {
1216 if ((w->pid == pid || !w->pid) 2684 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 2685 && (!traced || (w->flags & 1)))
1218 { 2686 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2687 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1244 /* make sure we are called again until all children have been reaped */ 2712 /* make sure we are called again until all children have been reaped */
1245 /* we need to do it this way so that the callback gets called before we continue */ 2713 /* we need to do it this way so that the callback gets called before we continue */
1246 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2714 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 2715
1248 child_reap (EV_A_ pid, pid, status); 2716 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 2717 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2718 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 2719}
1252 2720
1253#endif 2721#endif
1254 2722
1255/*****************************************************************************/ 2723/*****************************************************************************/
1256 2724
2725#if EV_USE_IOCP
2726# include "ev_iocp.c"
2727#endif
1257#if EV_USE_PORT 2728#if EV_USE_PORT
1258# include "ev_port.c" 2729# include "ev_port.c"
1259#endif 2730#endif
1260#if EV_USE_KQUEUE 2731#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 2732# include "ev_kqueue.c"
1262#endif 2733#endif
2734#if EV_USE_LINUXAIO
2735# include "ev_linuxaio.c"
2736#endif
1263#if EV_USE_EPOLL 2737#if EV_USE_EPOLL
1264# include "ev_epoll.c" 2738# include "ev_epoll.c"
1265#endif 2739#endif
1266#if EV_USE_POLL 2740#if EV_USE_POLL
1267# include "ev_poll.c" 2741# include "ev_poll.c"
1268#endif 2742#endif
1269#if EV_USE_SELECT 2743#if EV_USE_SELECT
1270# include "ev_select.c" 2744# include "ev_select.c"
1271#endif 2745#endif
1272 2746
1273int 2747ecb_cold int
1274ev_version_major (void) 2748ev_version_major (void) EV_NOEXCEPT
1275{ 2749{
1276 return EV_VERSION_MAJOR; 2750 return EV_VERSION_MAJOR;
1277} 2751}
1278 2752
1279int 2753ecb_cold int
1280ev_version_minor (void) 2754ev_version_minor (void) EV_NOEXCEPT
1281{ 2755{
1282 return EV_VERSION_MINOR; 2756 return EV_VERSION_MINOR;
1283} 2757}
1284 2758
1285/* return true if we are running with elevated privileges and should ignore env variables */ 2759/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 2760inline_size ecb_cold int
1287enable_secure (void) 2761enable_secure (void)
1288{ 2762{
1289#ifdef _WIN32 2763#ifdef _WIN32
1290 return 0; 2764 return 0;
1291#else 2765#else
1292 return getuid () != geteuid () 2766 return getuid () != geteuid ()
1293 || getgid () != getegid (); 2767 || getgid () != getegid ();
1294#endif 2768#endif
1295} 2769}
1296 2770
2771ecb_cold
1297unsigned int 2772unsigned int
1298ev_supported_backends (void) 2773ev_supported_backends (void) EV_NOEXCEPT
1299{ 2774{
1300 unsigned int flags = 0; 2775 unsigned int flags = 0;
1301 2776
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2777 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1303 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2778 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1304 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2779 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2780 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1305 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2781 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2782 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1307 2783
1308 return flags; 2784 return flags;
1309} 2785}
1310 2786
2787ecb_cold
1311unsigned int 2788unsigned int
1312ev_recommended_backends (void) 2789ev_recommended_backends (void) EV_NOEXCEPT
1313{ 2790{
1314 unsigned int flags = ev_supported_backends (); 2791 unsigned int flags = ev_supported_backends ();
1315 2792
1316#ifndef __NetBSD__ 2793#ifndef __NetBSD__
1317 /* kqueue is borked on everything but netbsd apparently */ 2794 /* kqueue is borked on everything but netbsd apparently */
… …
1321#ifdef __APPLE__ 2798#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 2799 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2800 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2801 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 2802#endif
2803#ifdef __FreeBSD__
2804 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2805#endif
2806
2807 /* TODO: linuxaio is very experimental */
2808 flags &= ~EVBACKEND_LINUXAIO;
1326 2809
1327 return flags; 2810 return flags;
1328} 2811}
1329 2812
2813ecb_cold
1330unsigned int 2814unsigned int
1331ev_embeddable_backends (void) 2815ev_embeddable_backends (void) EV_NOEXCEPT
1332{ 2816{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2817 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1334 2818
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2819 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1336 /* please fix it and tell me how to detect the fix */ 2820 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1337 flags &= ~EVBACKEND_EPOLL; 2821 flags &= ~EVBACKEND_EPOLL;
1338 2822
1339 return flags; 2823 return flags;
1340} 2824}
1341 2825
1342unsigned int 2826unsigned int
1343ev_backend (EV_P) 2827ev_backend (EV_P) EV_NOEXCEPT
1344{ 2828{
1345 return backend; 2829 return backend;
1346} 2830}
1347 2831
2832#if EV_FEATURE_API
1348unsigned int 2833unsigned int
1349ev_loop_count (EV_P) 2834ev_iteration (EV_P) EV_NOEXCEPT
1350{ 2835{
1351 return loop_count; 2836 return loop_count;
1352} 2837}
1353 2838
2839unsigned int
2840ev_depth (EV_P) EV_NOEXCEPT
2841{
2842 return loop_depth;
2843}
2844
1354void 2845void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2846ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1356{ 2847{
1357 io_blocktime = interval; 2848 io_blocktime = interval;
1358} 2849}
1359 2850
1360void 2851void
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2852ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1362{ 2853{
1363 timeout_blocktime = interval; 2854 timeout_blocktime = interval;
1364} 2855}
1365 2856
2857void
2858ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2859{
2860 userdata = data;
2861}
2862
2863void *
2864ev_userdata (EV_P) EV_NOEXCEPT
2865{
2866 return userdata;
2867}
2868
2869void
2870ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2871{
2872 invoke_cb = invoke_pending_cb;
2873}
2874
2875void
2876ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2877{
2878 release_cb = release;
2879 acquire_cb = acquire;
2880}
2881#endif
2882
1366/* initialise a loop structure, must be zero-initialised */ 2883/* initialise a loop structure, must be zero-initialised */
1367static void noinline 2884noinline ecb_cold
2885static void
1368loop_init (EV_P_ unsigned int flags) 2886loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1369{ 2887{
1370 if (!backend) 2888 if (!backend)
1371 { 2889 {
2890 origflags = flags;
2891
1372#if EV_USE_REALTIME 2892#if EV_USE_REALTIME
1373 if (!have_realtime) 2893 if (!have_realtime)
1374 { 2894 {
1375 struct timespec ts; 2895 struct timespec ts;
1376 2896
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2907 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 2908 have_monotonic = 1;
1389 } 2909 }
1390#endif 2910#endif
1391 2911
1392 ev_rt_now = ev_time ();
1393 mn_now = get_clock ();
1394 now_floor = mn_now;
1395 rtmn_diff = ev_rt_now - mn_now;
1396
1397 io_blocktime = 0.;
1398 timeout_blocktime = 0.;
1399 backend = 0;
1400 backend_fd = -1;
1401 gotasync = 0;
1402#if EV_USE_INOTIFY
1403 fs_fd = -2;
1404#endif
1405
1406 /* pid check not overridable via env */ 2912 /* pid check not overridable via env */
1407#ifndef _WIN32 2913#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 2914 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 2915 curpid = getpid ();
1410#endif 2916#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 2918 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 2919 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 2920 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 2921 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 2922
1417 if (!(flags & 0x0000ffffU)) 2923 ev_rt_now = ev_time ();
2924 mn_now = get_clock ();
2925 now_floor = mn_now;
2926 rtmn_diff = ev_rt_now - mn_now;
2927#if EV_FEATURE_API
2928 invoke_cb = ev_invoke_pending;
2929#endif
2930
2931 io_blocktime = 0.;
2932 timeout_blocktime = 0.;
2933 backend = 0;
2934 backend_fd = -1;
2935 sig_pending = 0;
2936#if EV_ASYNC_ENABLE
2937 async_pending = 0;
2938#endif
2939 pipe_write_skipped = 0;
2940 pipe_write_wanted = 0;
2941 evpipe [0] = -1;
2942 evpipe [1] = -1;
2943#if EV_USE_INOTIFY
2944 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2945#endif
2946#if EV_USE_SIGNALFD
2947 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2948#endif
2949
2950 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 2951 flags |= ev_recommended_backends ();
1419 2952
2953#if EV_USE_IOCP
2954 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2955#endif
1420#if EV_USE_PORT 2956#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2957 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 2958#endif
1423#if EV_USE_KQUEUE 2959#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2960 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2961#endif
2962#if EV_USE_LINUXAIO
2963 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1425#endif 2964#endif
1426#if EV_USE_EPOLL 2965#if EV_USE_EPOLL
1427 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1428#endif 2967#endif
1429#if EV_USE_POLL 2968#if EV_USE_POLL
1430 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1431#endif 2970#endif
1432#if EV_USE_SELECT 2971#if EV_USE_SELECT
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2972 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1434#endif 2973#endif
1435 2974
1436 ev_prepare_init (&pending_w, pendingcb); 2975 ev_prepare_init (&pending_w, pendingcb);
1437 2976
2977#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 2978 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 2979 ev_set_priority (&pipe_w, EV_MAXPRI);
2980#endif
1440 } 2981 }
1441} 2982}
1442 2983
1443/* free up a loop structure */ 2984/* free up a loop structure */
1444static void noinline 2985ecb_cold
2986void
1445loop_destroy (EV_P) 2987ev_loop_destroy (EV_P)
1446{ 2988{
1447 int i; 2989 int i;
1448 2990
2991#if EV_MULTIPLICITY
2992 /* mimic free (0) */
2993 if (!EV_A)
2994 return;
2995#endif
2996
2997#if EV_CLEANUP_ENABLE
2998 /* queue cleanup watchers (and execute them) */
2999 if (expect_false (cleanupcnt))
3000 {
3001 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3002 EV_INVOKE_PENDING;
3003 }
3004#endif
3005
3006#if EV_CHILD_ENABLE
3007 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3008 {
3009 ev_ref (EV_A); /* child watcher */
3010 ev_signal_stop (EV_A_ &childev);
3011 }
3012#endif
3013
1449 if (ev_is_active (&pipe_w)) 3014 if (ev_is_active (&pipe_w))
1450 { 3015 {
1451 ev_ref (EV_A); /* signal watcher */ 3016 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 3017 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 3018
3019 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3020 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3021 }
3022
1454#if EV_USE_EVENTFD 3023#if EV_USE_SIGNALFD
1455 if (evfd >= 0) 3024 if (ev_is_active (&sigfd_w))
1456 close (evfd); 3025 close (sigfd);
1457#endif 3026#endif
1458
1459 if (evpipe [0] >= 0)
1460 {
1461 close (evpipe [0]);
1462 close (evpipe [1]);
1463 }
1464 }
1465 3027
1466#if EV_USE_INOTIFY 3028#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 3029 if (fs_fd >= 0)
1468 close (fs_fd); 3030 close (fs_fd);
1469#endif 3031#endif
1470 3032
1471 if (backend_fd >= 0) 3033 if (backend_fd >= 0)
1472 close (backend_fd); 3034 close (backend_fd);
1473 3035
3036#if EV_USE_IOCP
3037 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3038#endif
1474#if EV_USE_PORT 3039#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3040 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 3041#endif
1477#if EV_USE_KQUEUE 3042#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3043 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3044#endif
3045#if EV_USE_LINUXAIO
3046 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1479#endif 3047#endif
1480#if EV_USE_EPOLL 3048#if EV_USE_EPOLL
1481 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3049 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1482#endif 3050#endif
1483#if EV_USE_POLL 3051#if EV_USE_POLL
1484 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3052 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1485#endif 3053#endif
1486#if EV_USE_SELECT 3054#if EV_USE_SELECT
1487 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3055 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1488#endif 3056#endif
1489 3057
1490 for (i = NUMPRI; i--; ) 3058 for (i = NUMPRI; i--; )
1491 { 3059 {
1492 array_free (pending, [i]); 3060 array_free (pending, [i]);
1493#if EV_IDLE_ENABLE 3061#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 3062 array_free (idle, [i]);
1495#endif 3063#endif
1496 } 3064 }
1497 3065
1498 ev_free (anfds); anfdmax = 0; 3066 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 3067
1500 /* have to use the microsoft-never-gets-it-right macro */ 3068 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 3069 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 3070 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 3071 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 3073 array_free (periodic, EMPTY);
1506#endif 3074#endif
1507#if EV_FORK_ENABLE 3075#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 3076 array_free (fork, EMPTY);
1509#endif 3077#endif
3078#if EV_CLEANUP_ENABLE
3079 array_free (cleanup, EMPTY);
3080#endif
1510 array_free (prepare, EMPTY); 3081 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 3082 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 3083#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 3084 array_free (async, EMPTY);
1514#endif 3085#endif
1515 3086
1516 backend = 0; 3087 backend = 0;
3088
3089#if EV_MULTIPLICITY
3090 if (ev_is_default_loop (EV_A))
3091#endif
3092 ev_default_loop_ptr = 0;
3093#if EV_MULTIPLICITY
3094 else
3095 ev_free (EV_A);
3096#endif
1517} 3097}
1518 3098
1519#if EV_USE_INOTIFY 3099#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 3100inline_size void infy_fork (EV_P);
1521#endif 3101#endif
1522 3102
1523inline_size void 3103inline_size void
1524loop_fork (EV_P) 3104loop_fork (EV_P)
1525{ 3105{
1526#if EV_USE_PORT 3106#if EV_USE_PORT
1527 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3107 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1528#endif 3108#endif
1529#if EV_USE_KQUEUE 3109#if EV_USE_KQUEUE
1530 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3110 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3111#endif
3112#if EV_USE_LINUXAIO
3113 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1531#endif 3114#endif
1532#if EV_USE_EPOLL 3115#if EV_USE_EPOLL
1533 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3116 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1534#endif 3117#endif
1535#if EV_USE_INOTIFY 3118#if EV_USE_INOTIFY
1536 infy_fork (EV_A); 3119 infy_fork (EV_A);
1537#endif 3120#endif
1538 3121
3122#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1539 if (ev_is_active (&pipe_w)) 3123 if (ev_is_active (&pipe_w) && postfork != 2)
1540 { 3124 {
1541 /* this "locks" the handlers against writing to the pipe */ 3125 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1542 /* while we modify the fd vars */
1543 gotsig = 1;
1544#if EV_ASYNC_ENABLE
1545 gotasync = 1;
1546#endif
1547 3126
1548 ev_ref (EV_A); 3127 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 3128 ev_io_stop (EV_A_ &pipe_w);
1550 3129
1551#if EV_USE_EVENTFD
1552 if (evfd >= 0)
1553 close (evfd);
1554#endif
1555
1556 if (evpipe [0] >= 0) 3130 if (evpipe [0] >= 0)
1557 { 3131 EV_WIN32_CLOSE_FD (evpipe [0]);
1558 close (evpipe [0]);
1559 close (evpipe [1]);
1560 }
1561 3132
1562 evpipe_init (EV_A); 3133 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 3134 /* iterate over everything, in case we missed something before */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 3135 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1565 } 3136 }
3137#endif
1566 3138
1567 postfork = 0; 3139 postfork = 0;
1568} 3140}
1569 3141
1570#if EV_MULTIPLICITY 3142#if EV_MULTIPLICITY
1571 3143
3144ecb_cold
1572struct ev_loop * 3145struct ev_loop *
1573ev_loop_new (unsigned int flags) 3146ev_loop_new (unsigned int flags) EV_NOEXCEPT
1574{ 3147{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3148 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 3149
1577 memset (loop, 0, sizeof (struct ev_loop)); 3150 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 3151 loop_init (EV_A_ flags);
1580 3152
1581 if (ev_backend (EV_A)) 3153 if (ev_backend (EV_A))
1582 return loop; 3154 return EV_A;
1583 3155
3156 ev_free (EV_A);
1584 return 0; 3157 return 0;
1585} 3158}
1586 3159
1587void 3160#endif /* multiplicity */
1588ev_loop_destroy (EV_P)
1589{
1590 loop_destroy (EV_A);
1591 ev_free (loop);
1592}
1593
1594void
1595ev_loop_fork (EV_P)
1596{
1597 postfork = 1; /* must be in line with ev_default_fork */
1598}
1599 3161
1600#if EV_VERIFY 3162#if EV_VERIFY
1601static void noinline 3163noinline ecb_cold
3164static void
1602verify_watcher (EV_P_ W w) 3165verify_watcher (EV_P_ W w)
1603{ 3166{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3167 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 3168
1606 if (w->pending) 3169 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3170 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 3171}
1609 3172
1610static void noinline 3173noinline ecb_cold
3174static void
1611verify_heap (EV_P_ ANHE *heap, int N) 3175verify_heap (EV_P_ ANHE *heap, int N)
1612{ 3176{
1613 int i; 3177 int i;
1614 3178
1615 for (i = HEAP0; i < N + HEAP0; ++i) 3179 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 3184
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3185 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 3186 }
1623} 3187}
1624 3188
1625static void noinline 3189noinline ecb_cold
3190static void
1626array_verify (EV_P_ W *ws, int cnt) 3191array_verify (EV_P_ W *ws, int cnt)
1627{ 3192{
1628 while (cnt--) 3193 while (cnt--)
1629 { 3194 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3195 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 3196 verify_watcher (EV_A_ ws [cnt]);
1632 } 3197 }
1633} 3198}
1634#endif 3199#endif
1635 3200
1636void 3201#if EV_FEATURE_API
1637ev_loop_verify (EV_P) 3202void ecb_cold
3203ev_verify (EV_P) EV_NOEXCEPT
1638{ 3204{
1639#if EV_VERIFY 3205#if EV_VERIFY
1640 int i; 3206 int i;
1641 WL w; 3207 WL w, w2;
1642 3208
1643 assert (activecnt >= -1); 3209 assert (activecnt >= -1);
1644 3210
1645 assert (fdchangemax >= fdchangecnt); 3211 assert (fdchangemax >= fdchangecnt);
1646 for (i = 0; i < fdchangecnt; ++i) 3212 for (i = 0; i < fdchangecnt; ++i)
1647 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3213 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1648 3214
1649 assert (anfdmax >= 0); 3215 assert (anfdmax >= 0);
1650 for (i = 0; i < anfdmax; ++i) 3216 for (i = 0; i < anfdmax; ++i)
3217 {
3218 int j = 0;
3219
1651 for (w = anfds [i].head; w; w = w->next) 3220 for (w = w2 = anfds [i].head; w; w = w->next)
1652 { 3221 {
1653 verify_watcher (EV_A_ (W)w); 3222 verify_watcher (EV_A_ (W)w);
3223
3224 if (j++ & 1)
3225 {
3226 assert (("libev: io watcher list contains a loop", w != w2));
3227 w2 = w2->next;
3228 }
3229
1654 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3230 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1655 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3231 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1656 } 3232 }
3233 }
1657 3234
1658 assert (timermax >= timercnt); 3235 assert (timermax >= timercnt);
1659 verify_heap (EV_A_ timers, timercnt); 3236 verify_heap (EV_A_ timers, timercnt);
1660 3237
1661#if EV_PERIODIC_ENABLE 3238#if EV_PERIODIC_ENABLE
… …
1676#if EV_FORK_ENABLE 3253#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 3254 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 3255 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 3256#endif
1680 3257
3258#if EV_CLEANUP_ENABLE
3259 assert (cleanupmax >= cleanupcnt);
3260 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3261#endif
3262
1681#if EV_ASYNC_ENABLE 3263#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 3264 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 3265 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 3266#endif
1685 3267
3268#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 3269 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 3270 array_verify (EV_A_ (W *)prepares, preparecnt);
3271#endif
1688 3272
3273#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 3274 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 3275 array_verify (EV_A_ (W *)checks, checkcnt);
3276#endif
1691 3277
1692# if 0 3278# if 0
3279#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3280 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1694 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3281 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3282#endif
1695# endif 3283# endif
1696#endif 3284#endif
1697} 3285}
1698 3286#endif
1699#endif /* multiplicity */
1700 3287
1701#if EV_MULTIPLICITY 3288#if EV_MULTIPLICITY
3289ecb_cold
1702struct ev_loop * 3290struct ev_loop *
1703ev_default_loop_init (unsigned int flags)
1704#else 3291#else
1705int 3292int
3293#endif
1706ev_default_loop (unsigned int flags) 3294ev_default_loop (unsigned int flags) EV_NOEXCEPT
1707#endif
1708{ 3295{
1709 if (!ev_default_loop_ptr) 3296 if (!ev_default_loop_ptr)
1710 { 3297 {
1711#if EV_MULTIPLICITY 3298#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3299 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 3300#else
1714 ev_default_loop_ptr = 1; 3301 ev_default_loop_ptr = 1;
1715#endif 3302#endif
1716 3303
1717 loop_init (EV_A_ flags); 3304 loop_init (EV_A_ flags);
1718 3305
1719 if (ev_backend (EV_A)) 3306 if (ev_backend (EV_A))
1720 { 3307 {
1721#ifndef _WIN32 3308#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 3309 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 3310 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 3311 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3312 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 3313#endif
… …
1731 3318
1732 return ev_default_loop_ptr; 3319 return ev_default_loop_ptr;
1733} 3320}
1734 3321
1735void 3322void
1736ev_default_destroy (void) 3323ev_loop_fork (EV_P) EV_NOEXCEPT
1737{ 3324{
1738#if EV_MULTIPLICITY 3325 postfork = 1;
1739 struct ev_loop *loop = ev_default_loop_ptr;
1740#endif
1741
1742 ev_default_loop_ptr = 0;
1743
1744#ifndef _WIN32
1745 ev_ref (EV_A); /* child watcher */
1746 ev_signal_stop (EV_A_ &childev);
1747#endif
1748
1749 loop_destroy (EV_A);
1750}
1751
1752void
1753ev_default_fork (void)
1754{
1755#if EV_MULTIPLICITY
1756 struct ev_loop *loop = ev_default_loop_ptr;
1757#endif
1758
1759 postfork = 1; /* must be in line with ev_loop_fork */
1760} 3326}
1761 3327
1762/*****************************************************************************/ 3328/*****************************************************************************/
1763 3329
1764void 3330void
1765ev_invoke (EV_P_ void *w, int revents) 3331ev_invoke (EV_P_ void *w, int revents)
1766{ 3332{
1767 EV_CB_INVOKE ((W)w, revents); 3333 EV_CB_INVOKE ((W)w, revents);
1768} 3334}
1769 3335
1770inline_speed void 3336unsigned int
1771call_pending (EV_P) 3337ev_pending_count (EV_P) EV_NOEXCEPT
1772{ 3338{
1773 int pri; 3339 int pri;
3340 unsigned int count = 0;
1774 3341
1775 for (pri = NUMPRI; pri--; ) 3342 for (pri = NUMPRI; pri--; )
3343 count += pendingcnt [pri];
3344
3345 return count;
3346}
3347
3348noinline
3349void
3350ev_invoke_pending (EV_P)
3351{
3352 pendingpri = NUMPRI;
3353
3354 do
3355 {
3356 --pendingpri;
3357
3358 /* pendingpri possibly gets modified in the inner loop */
1776 while (pendingcnt [pri]) 3359 while (pendingcnt [pendingpri])
1777 { 3360 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3361 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1779 3362
1780 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1781 /* ^ this is no longer true, as pending_w could be here */
1782
1783 p->w->pending = 0; 3363 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 3364 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 3365 EV_FREQUENT_CHECK;
1786 } 3366 }
3367 }
3368 while (pendingpri);
1787} 3369}
1788 3370
1789#if EV_IDLE_ENABLE 3371#if EV_IDLE_ENABLE
1790/* make idle watchers pending. this handles the "call-idle */ 3372/* make idle watchers pending. this handles the "call-idle */
1791/* only when higher priorities are idle" logic */ 3373/* only when higher priorities are idle" logic */
… …
1843 EV_FREQUENT_CHECK; 3425 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 3426 feed_reverse (EV_A_ (W)w);
1845 } 3427 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3428 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 3429
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 3430 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 3431 }
1850} 3432}
1851 3433
1852#if EV_PERIODIC_ENABLE 3434#if EV_PERIODIC_ENABLE
3435
3436noinline
3437static void
3438periodic_recalc (EV_P_ ev_periodic *w)
3439{
3440 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3441 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3442
3443 /* the above almost always errs on the low side */
3444 while (at <= ev_rt_now)
3445 {
3446 ev_tstamp nat = at + w->interval;
3447
3448 /* when resolution fails us, we use ev_rt_now */
3449 if (expect_false (nat == at))
3450 {
3451 at = ev_rt_now;
3452 break;
3453 }
3454
3455 at = nat;
3456 }
3457
3458 ev_at (w) = at;
3459}
3460
1853/* make periodics pending */ 3461/* make periodics pending */
1854inline_size void 3462inline_size void
1855periodics_reify (EV_P) 3463periodics_reify (EV_P)
1856{ 3464{
1857 EV_FREQUENT_CHECK; 3465 EV_FREQUENT_CHECK;
1858 3466
1859 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3467 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1860 { 3468 {
1861 int feed_count = 0;
1862
1863 do 3469 do
1864 { 3470 {
1865 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3471 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1866 3472
1867 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3473 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1876 ANHE_at_cache (periodics [HEAP0]); 3482 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 3483 downheap (periodics, periodiccnt, HEAP0);
1878 } 3484 }
1879 else if (w->interval) 3485 else if (w->interval)
1880 { 3486 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3487 periodic_recalc (EV_A_ w);
1882 /* if next trigger time is not sufficiently in the future, put it there */
1883 /* this might happen because of floating point inexactness */
1884 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1885 {
1886 ev_at (w) += w->interval;
1887
1888 /* if interval is unreasonably low we might still have a time in the past */
1889 /* so correct this. this will make the periodic very inexact, but the user */
1890 /* has effectively asked to get triggered more often than possible */
1891 if (ev_at (w) < ev_rt_now)
1892 ev_at (w) = ev_rt_now;
1893 }
1894
1895 ANHE_at_cache (periodics [HEAP0]); 3488 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 3489 downheap (periodics, periodiccnt, HEAP0);
1897 } 3490 }
1898 else 3491 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3492 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 3499 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 3500 }
1908} 3501}
1909 3502
1910/* simply recalculate all periodics */ 3503/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3504/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 3505noinline ecb_cold
3506static void
1913periodics_reschedule (EV_P) 3507periodics_reschedule (EV_P)
1914{ 3508{
1915 int i; 3509 int i;
1916 3510
1917 /* adjust periodics after time jump */ 3511 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3514 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 3515
1922 if (w->reschedule_cb) 3516 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3517 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 3518 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3519 periodic_recalc (EV_A_ w);
1926 3520
1927 ANHE_at_cache (periodics [i]); 3521 ANHE_at_cache (periodics [i]);
1928 } 3522 }
1929 3523
1930 reheap (periodics, periodiccnt); 3524 reheap (periodics, periodiccnt);
1931} 3525}
1932#endif 3526#endif
1933 3527
1934/* adjust all timers by a given offset */ 3528/* adjust all timers by a given offset */
1935static void noinline 3529noinline ecb_cold
3530static void
1936timers_reschedule (EV_P_ ev_tstamp adjust) 3531timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 3532{
1938 int i; 3533 int i;
1939 3534
1940 for (i = 0; i < timercnt; ++i) 3535 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 3539 ANHE_at_cache (*he);
1945 } 3540 }
1946} 3541}
1947 3542
1948/* fetch new monotonic and realtime times from the kernel */ 3543/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 3544/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 3545inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 3546time_update (EV_P_ ev_tstamp max_block)
1952{ 3547{
1953 int i;
1954
1955#if EV_USE_MONOTONIC 3548#if EV_USE_MONOTONIC
1956 if (expect_true (have_monotonic)) 3549 if (expect_true (have_monotonic))
1957 { 3550 {
3551 int i;
1958 ev_tstamp odiff = rtmn_diff; 3552 ev_tstamp odiff = rtmn_diff;
1959 3553
1960 mn_now = get_clock (); 3554 mn_now = get_clock ();
1961 3555
1962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3556 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1978 * doesn't hurt either as we only do this on time-jumps or 3572 * doesn't hurt either as we only do this on time-jumps or
1979 * in the unlikely event of having been preempted here. 3573 * in the unlikely event of having been preempted here.
1980 */ 3574 */
1981 for (i = 4; --i; ) 3575 for (i = 4; --i; )
1982 { 3576 {
3577 ev_tstamp diff;
1983 rtmn_diff = ev_rt_now - mn_now; 3578 rtmn_diff = ev_rt_now - mn_now;
1984 3579
3580 diff = odiff - rtmn_diff;
3581
1985 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3582 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1986 return; /* all is well */ 3583 return; /* all is well */
1987 3584
1988 ev_rt_now = ev_time (); 3585 ev_rt_now = ev_time ();
1989 mn_now = get_clock (); 3586 mn_now = get_clock ();
1990 now_floor = mn_now; 3587 now_floor = mn_now;
… …
2012 3609
2013 mn_now = ev_rt_now; 3610 mn_now = ev_rt_now;
2014 } 3611 }
2015} 3612}
2016 3613
2017static int loop_done; 3614int
2018
2019void
2020ev_loop (EV_P_ int flags) 3615ev_run (EV_P_ int flags)
2021{ 3616{
3617#if EV_FEATURE_API
3618 ++loop_depth;
3619#endif
3620
3621 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3622
2022 loop_done = EVUNLOOP_CANCEL; 3623 loop_done = EVBREAK_CANCEL;
2023 3624
2024 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3625 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2025 3626
2026 do 3627 do
2027 { 3628 {
2028#if EV_VERIFY >= 2 3629#if EV_VERIFY >= 2
2029 ev_loop_verify (EV_A); 3630 ev_verify (EV_A);
2030#endif 3631#endif
2031 3632
2032#ifndef _WIN32 3633#ifndef _WIN32
2033 if (expect_false (curpid)) /* penalise the forking check even more */ 3634 if (expect_false (curpid)) /* penalise the forking check even more */
2034 if (expect_false (getpid () != curpid)) 3635 if (expect_false (getpid () != curpid))
… …
2042 /* we might have forked, so queue fork handlers */ 3643 /* we might have forked, so queue fork handlers */
2043 if (expect_false (postfork)) 3644 if (expect_false (postfork))
2044 if (forkcnt) 3645 if (forkcnt)
2045 { 3646 {
2046 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3647 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2047 call_pending (EV_A); 3648 EV_INVOKE_PENDING;
2048 } 3649 }
2049#endif 3650#endif
2050 3651
3652#if EV_PREPARE_ENABLE
2051 /* queue prepare watchers (and execute them) */ 3653 /* queue prepare watchers (and execute them) */
2052 if (expect_false (preparecnt)) 3654 if (expect_false (preparecnt))
2053 { 3655 {
2054 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3656 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2055 call_pending (EV_A); 3657 EV_INVOKE_PENDING;
2056 } 3658 }
3659#endif
3660
3661 if (expect_false (loop_done))
3662 break;
2057 3663
2058 /* we might have forked, so reify kernel state if necessary */ 3664 /* we might have forked, so reify kernel state if necessary */
2059 if (expect_false (postfork)) 3665 if (expect_false (postfork))
2060 loop_fork (EV_A); 3666 loop_fork (EV_A);
2061 3667
… …
2065 /* calculate blocking time */ 3671 /* calculate blocking time */
2066 { 3672 {
2067 ev_tstamp waittime = 0.; 3673 ev_tstamp waittime = 0.;
2068 ev_tstamp sleeptime = 0.; 3674 ev_tstamp sleeptime = 0.;
2069 3675
3676 /* remember old timestamp for io_blocktime calculation */
3677 ev_tstamp prev_mn_now = mn_now;
3678
3679 /* update time to cancel out callback processing overhead */
3680 time_update (EV_A_ 1e100);
3681
3682 /* from now on, we want a pipe-wake-up */
3683 pipe_write_wanted = 1;
3684
3685 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3686
2070 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3687 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2071 { 3688 {
2072 /* update time to cancel out callback processing overhead */
2073 time_update (EV_A_ 1e100);
2074
2075 waittime = MAX_BLOCKTIME; 3689 waittime = MAX_BLOCKTIME;
2076 3690
2077 if (timercnt) 3691 if (timercnt)
2078 { 3692 {
2079 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3693 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2080 if (waittime > to) waittime = to; 3694 if (waittime > to) waittime = to;
2081 } 3695 }
2082 3696
2083#if EV_PERIODIC_ENABLE 3697#if EV_PERIODIC_ENABLE
2084 if (periodiccnt) 3698 if (periodiccnt)
2085 { 3699 {
2086 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3700 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2087 if (waittime > to) waittime = to; 3701 if (waittime > to) waittime = to;
2088 } 3702 }
2089#endif 3703#endif
2090 3704
3705 /* don't let timeouts decrease the waittime below timeout_blocktime */
2091 if (expect_false (waittime < timeout_blocktime)) 3706 if (expect_false (waittime < timeout_blocktime))
2092 waittime = timeout_blocktime; 3707 waittime = timeout_blocktime;
2093 3708
2094 sleeptime = waittime - backend_fudge; 3709 /* at this point, we NEED to wait, so we have to ensure */
3710 /* to pass a minimum nonzero value to the backend */
3711 if (expect_false (waittime < backend_mintime))
3712 waittime = backend_mintime;
2095 3713
3714 /* extra check because io_blocktime is commonly 0 */
2096 if (expect_true (sleeptime > io_blocktime)) 3715 if (expect_false (io_blocktime))
2097 sleeptime = io_blocktime;
2098
2099 if (sleeptime)
2100 { 3716 {
3717 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3718
3719 if (sleeptime > waittime - backend_mintime)
3720 sleeptime = waittime - backend_mintime;
3721
3722 if (expect_true (sleeptime > 0.))
3723 {
2101 ev_sleep (sleeptime); 3724 ev_sleep (sleeptime);
2102 waittime -= sleeptime; 3725 waittime -= sleeptime;
3726 }
2103 } 3727 }
2104 } 3728 }
2105 3729
3730#if EV_FEATURE_API
2106 ++loop_count; 3731 ++loop_count;
3732#endif
3733 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2107 backend_poll (EV_A_ waittime); 3734 backend_poll (EV_A_ waittime);
3735 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3736
3737 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3738
3739 ECB_MEMORY_FENCE_ACQUIRE;
3740 if (pipe_write_skipped)
3741 {
3742 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3743 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3744 }
3745
2108 3746
2109 /* update ev_rt_now, do magic */ 3747 /* update ev_rt_now, do magic */
2110 time_update (EV_A_ waittime + sleeptime); 3748 time_update (EV_A_ waittime + sleeptime);
2111 } 3749 }
2112 3750
… …
2119#if EV_IDLE_ENABLE 3757#if EV_IDLE_ENABLE
2120 /* queue idle watchers unless other events are pending */ 3758 /* queue idle watchers unless other events are pending */
2121 idle_reify (EV_A); 3759 idle_reify (EV_A);
2122#endif 3760#endif
2123 3761
3762#if EV_CHECK_ENABLE
2124 /* queue check watchers, to be executed first */ 3763 /* queue check watchers, to be executed first */
2125 if (expect_false (checkcnt)) 3764 if (expect_false (checkcnt))
2126 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3765 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3766#endif
2127 3767
2128 call_pending (EV_A); 3768 EV_INVOKE_PENDING;
2129 } 3769 }
2130 while (expect_true ( 3770 while (expect_true (
2131 activecnt 3771 activecnt
2132 && !loop_done 3772 && !loop_done
2133 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3773 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2134 )); 3774 ));
2135 3775
2136 if (loop_done == EVUNLOOP_ONE) 3776 if (loop_done == EVBREAK_ONE)
2137 loop_done = EVUNLOOP_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2138}
2139 3778
3779#if EV_FEATURE_API
3780 --loop_depth;
3781#endif
3782
3783 return activecnt;
3784}
3785
2140void 3786void
2141ev_unloop (EV_P_ int how) 3787ev_break (EV_P_ int how) EV_NOEXCEPT
2142{ 3788{
2143 loop_done = how; 3789 loop_done = how;
2144} 3790}
2145 3791
2146void 3792void
2147ev_ref (EV_P) 3793ev_ref (EV_P) EV_NOEXCEPT
2148{ 3794{
2149 ++activecnt; 3795 ++activecnt;
2150} 3796}
2151 3797
2152void 3798void
2153ev_unref (EV_P) 3799ev_unref (EV_P) EV_NOEXCEPT
2154{ 3800{
2155 --activecnt; 3801 --activecnt;
2156} 3802}
2157 3803
2158void 3804void
2159ev_now_update (EV_P) 3805ev_now_update (EV_P) EV_NOEXCEPT
2160{ 3806{
2161 time_update (EV_A_ 1e100); 3807 time_update (EV_A_ 1e100);
2162} 3808}
2163 3809
2164void 3810void
2165ev_suspend (EV_P) 3811ev_suspend (EV_P) EV_NOEXCEPT
2166{ 3812{
2167 ev_now_update (EV_A); 3813 ev_now_update (EV_A);
2168} 3814}
2169 3815
2170void 3816void
2171ev_resume (EV_P) 3817ev_resume (EV_P) EV_NOEXCEPT
2172{ 3818{
2173 ev_tstamp mn_prev = mn_now; 3819 ev_tstamp mn_prev = mn_now;
2174 3820
2175 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
2176 timers_reschedule (EV_A_ mn_now - mn_prev); 3822 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2193inline_size void 3839inline_size void
2194wlist_del (WL *head, WL elem) 3840wlist_del (WL *head, WL elem)
2195{ 3841{
2196 while (*head) 3842 while (*head)
2197 { 3843 {
2198 if (*head == elem) 3844 if (expect_true (*head == elem))
2199 { 3845 {
2200 *head = elem->next; 3846 *head = elem->next;
2201 return; 3847 break;
2202 } 3848 }
2203 3849
2204 head = &(*head)->next; 3850 head = &(*head)->next;
2205 } 3851 }
2206} 3852}
… …
2215 w->pending = 0; 3861 w->pending = 0;
2216 } 3862 }
2217} 3863}
2218 3864
2219int 3865int
2220ev_clear_pending (EV_P_ void *w) 3866ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2221{ 3867{
2222 W w_ = (W)w; 3868 W w_ = (W)w;
2223 int pending = w_->pending; 3869 int pending = w_->pending;
2224 3870
2225 if (expect_true (pending)) 3871 if (expect_true (pending))
… …
2234} 3880}
2235 3881
2236inline_size void 3882inline_size void
2237pri_adjust (EV_P_ W w) 3883pri_adjust (EV_P_ W w)
2238{ 3884{
2239 int pri = w->priority; 3885 int pri = ev_priority (w);
2240 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3886 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2241 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3887 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2242 w->priority = pri; 3888 ev_set_priority (w, pri);
2243} 3889}
2244 3890
2245inline_speed void 3891inline_speed void
2246ev_start (EV_P_ W w, int active) 3892ev_start (EV_P_ W w, int active)
2247{ 3893{
… …
2257 w->active = 0; 3903 w->active = 0;
2258} 3904}
2259 3905
2260/*****************************************************************************/ 3906/*****************************************************************************/
2261 3907
2262void noinline 3908noinline
3909void
2263ev_io_start (EV_P_ ev_io *w) 3910ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2264{ 3911{
2265 int fd = w->fd; 3912 int fd = w->fd;
2266 3913
2267 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2268 return; 3915 return;
2269 3916
2270 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3917 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2271 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3918 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2272 3919
2273 EV_FREQUENT_CHECK; 3920 EV_FREQUENT_CHECK;
2274 3921
2275 ev_start (EV_A_ (W)w, 1); 3922 ev_start (EV_A_ (W)w, 1);
2276 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3923 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2277 wlist_add (&anfds[fd].head, (WL)w); 3924 wlist_add (&anfds[fd].head, (WL)w);
2278 3925
3926 /* common bug, apparently */
3927 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3928
2279 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3929 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2280 w->events &= ~EV__IOFDSET; 3930 w->events &= ~EV__IOFDSET;
2281 3931
2282 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
2283} 3933}
2284 3934
2285void noinline 3935noinline
3936void
2286ev_io_stop (EV_P_ ev_io *w) 3937ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2287{ 3938{
2288 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
2289 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
2290 return; 3941 return;
2291 3942
… …
2294 EV_FREQUENT_CHECK; 3945 EV_FREQUENT_CHECK;
2295 3946
2296 wlist_del (&anfds[w->fd].head, (WL)w); 3947 wlist_del (&anfds[w->fd].head, (WL)w);
2297 ev_stop (EV_A_ (W)w); 3948 ev_stop (EV_A_ (W)w);
2298 3949
2299 fd_change (EV_A_ w->fd, 1); 3950 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2300 3951
2301 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
2302} 3953}
2303 3954
2304void noinline 3955noinline
3956void
2305ev_timer_start (EV_P_ ev_timer *w) 3957ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2306{ 3958{
2307 if (expect_false (ev_is_active (w))) 3959 if (expect_false (ev_is_active (w)))
2308 return; 3960 return;
2309 3961
2310 ev_at (w) += mn_now; 3962 ev_at (w) += mn_now;
… …
2313 3965
2314 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
2315 3967
2316 ++timercnt; 3968 ++timercnt;
2317 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3969 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2318 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3970 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2319 ANHE_w (timers [ev_active (w)]) = (WT)w; 3971 ANHE_w (timers [ev_active (w)]) = (WT)w;
2320 ANHE_at_cache (timers [ev_active (w)]); 3972 ANHE_at_cache (timers [ev_active (w)]);
2321 upheap (timers, ev_active (w)); 3973 upheap (timers, ev_active (w));
2322 3974
2323 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2324 3976
2325 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3977 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2326} 3978}
2327 3979
2328void noinline 3980noinline
3981void
2329ev_timer_stop (EV_P_ ev_timer *w) 3982ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2330{ 3983{
2331 clear_pending (EV_A_ (W)w); 3984 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w))) 3985 if (expect_false (!ev_is_active (w)))
2333 return; 3986 return;
2334 3987
… …
2346 timers [active] = timers [timercnt + HEAP0]; 3999 timers [active] = timers [timercnt + HEAP0];
2347 adjustheap (timers, timercnt, active); 4000 adjustheap (timers, timercnt, active);
2348 } 4001 }
2349 } 4002 }
2350 4003
2351 EV_FREQUENT_CHECK;
2352
2353 ev_at (w) -= mn_now; 4004 ev_at (w) -= mn_now;
2354 4005
2355 ev_stop (EV_A_ (W)w); 4006 ev_stop (EV_A_ (W)w);
2356}
2357 4007
4008 EV_FREQUENT_CHECK;
4009}
4010
2358void noinline 4011noinline
4012void
2359ev_timer_again (EV_P_ ev_timer *w) 4013ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2360{ 4014{
2361 EV_FREQUENT_CHECK; 4015 EV_FREQUENT_CHECK;
4016
4017 clear_pending (EV_A_ (W)w);
2362 4018
2363 if (ev_is_active (w)) 4019 if (ev_is_active (w))
2364 { 4020 {
2365 if (w->repeat) 4021 if (w->repeat)
2366 { 4022 {
… …
2378 } 4034 }
2379 4035
2380 EV_FREQUENT_CHECK; 4036 EV_FREQUENT_CHECK;
2381} 4037}
2382 4038
4039ev_tstamp
4040ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4041{
4042 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4043}
4044
2383#if EV_PERIODIC_ENABLE 4045#if EV_PERIODIC_ENABLE
2384void noinline 4046noinline
4047void
2385ev_periodic_start (EV_P_ ev_periodic *w) 4048ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2386{ 4049{
2387 if (expect_false (ev_is_active (w))) 4050 if (expect_false (ev_is_active (w)))
2388 return; 4051 return;
2389 4052
2390 if (w->reschedule_cb) 4053 if (w->reschedule_cb)
2391 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4054 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2392 else if (w->interval) 4055 else if (w->interval)
2393 { 4056 {
2394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4057 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2395 /* this formula differs from the one in periodic_reify because we do not always round up */ 4058 periodic_recalc (EV_A_ w);
2396 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2397 } 4059 }
2398 else 4060 else
2399 ev_at (w) = w->offset; 4061 ev_at (w) = w->offset;
2400 4062
2401 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
2402 4064
2403 ++periodiccnt; 4065 ++periodiccnt;
2404 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4066 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2405 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4067 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2406 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4068 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2407 ANHE_at_cache (periodics [ev_active (w)]); 4069 ANHE_at_cache (periodics [ev_active (w)]);
2408 upheap (periodics, ev_active (w)); 4070 upheap (periodics, ev_active (w));
2409 4071
2410 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2411 4073
2412 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4074 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2413} 4075}
2414 4076
2415void noinline 4077noinline
4078void
2416ev_periodic_stop (EV_P_ ev_periodic *w) 4079ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2417{ 4080{
2418 clear_pending (EV_A_ (W)w); 4081 clear_pending (EV_A_ (W)w);
2419 if (expect_false (!ev_is_active (w))) 4082 if (expect_false (!ev_is_active (w)))
2420 return; 4083 return;
2421 4084
… …
2433 periodics [active] = periodics [periodiccnt + HEAP0]; 4096 periodics [active] = periodics [periodiccnt + HEAP0];
2434 adjustheap (periodics, periodiccnt, active); 4097 adjustheap (periodics, periodiccnt, active);
2435 } 4098 }
2436 } 4099 }
2437 4100
2438 EV_FREQUENT_CHECK;
2439
2440 ev_stop (EV_A_ (W)w); 4101 ev_stop (EV_A_ (W)w);
2441}
2442 4102
4103 EV_FREQUENT_CHECK;
4104}
4105
2443void noinline 4106noinline
4107void
2444ev_periodic_again (EV_P_ ev_periodic *w) 4108ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2445{ 4109{
2446 /* TODO: use adjustheap and recalculation */ 4110 /* TODO: use adjustheap and recalculation */
2447 ev_periodic_stop (EV_A_ w); 4111 ev_periodic_stop (EV_A_ w);
2448 ev_periodic_start (EV_A_ w); 4112 ev_periodic_start (EV_A_ w);
2449} 4113}
… …
2451 4115
2452#ifndef SA_RESTART 4116#ifndef SA_RESTART
2453# define SA_RESTART 0 4117# define SA_RESTART 0
2454#endif 4118#endif
2455 4119
4120#if EV_SIGNAL_ENABLE
4121
2456void noinline 4122noinline
4123void
2457ev_signal_start (EV_P_ ev_signal *w) 4124ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2458{ 4125{
2459#if EV_MULTIPLICITY
2460 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2461#endif
2462 if (expect_false (ev_is_active (w))) 4126 if (expect_false (ev_is_active (w)))
2463 return; 4127 return;
2464 4128
2465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4129 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2466 4130
2467 evpipe_init (EV_A); 4131#if EV_MULTIPLICITY
4132 assert (("libev: a signal must not be attached to two different loops",
4133 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2468 4134
2469 EV_FREQUENT_CHECK; 4135 signals [w->signum - 1].loop = EV_A;
4136 ECB_MEMORY_FENCE_RELEASE;
4137#endif
2470 4138
4139 EV_FREQUENT_CHECK;
4140
4141#if EV_USE_SIGNALFD
4142 if (sigfd == -2)
2471 { 4143 {
2472#ifndef _WIN32 4144 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2473 sigset_t full, prev; 4145 if (sigfd < 0 && errno == EINVAL)
2474 sigfillset (&full); 4146 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2475 sigprocmask (SIG_SETMASK, &full, &prev);
2476#endif
2477 4147
2478 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4148 if (sigfd >= 0)
4149 {
4150 fd_intern (sigfd); /* doing it twice will not hurt */
2479 4151
2480#ifndef _WIN32 4152 sigemptyset (&sigfd_set);
2481 sigprocmask (SIG_SETMASK, &prev, 0); 4153
2482#endif 4154 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4155 ev_set_priority (&sigfd_w, EV_MAXPRI);
4156 ev_io_start (EV_A_ &sigfd_w);
4157 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4158 }
2483 } 4159 }
4160
4161 if (sigfd >= 0)
4162 {
4163 /* TODO: check .head */
4164 sigaddset (&sigfd_set, w->signum);
4165 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4166
4167 signalfd (sigfd, &sigfd_set, 0);
4168 }
4169#endif
2484 4170
2485 ev_start (EV_A_ (W)w, 1); 4171 ev_start (EV_A_ (W)w, 1);
2486 wlist_add (&signals [w->signum - 1].head, (WL)w); 4172 wlist_add (&signals [w->signum - 1].head, (WL)w);
2487 4173
2488 if (!((WL)w)->next) 4174 if (!((WL)w)->next)
4175# if EV_USE_SIGNALFD
4176 if (sigfd < 0) /*TODO*/
4177# endif
2489 { 4178 {
2490#if _WIN32 4179# ifdef _WIN32
4180 evpipe_init (EV_A);
4181
2491 signal (w->signum, ev_sighandler); 4182 signal (w->signum, ev_sighandler);
2492#else 4183# else
2493 struct sigaction sa; 4184 struct sigaction sa;
4185
4186 evpipe_init (EV_A);
4187
2494 sa.sa_handler = ev_sighandler; 4188 sa.sa_handler = ev_sighandler;
2495 sigfillset (&sa.sa_mask); 4189 sigfillset (&sa.sa_mask);
2496 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4190 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2497 sigaction (w->signum, &sa, 0); 4191 sigaction (w->signum, &sa, 0);
4192
4193 if (origflags & EVFLAG_NOSIGMASK)
4194 {
4195 sigemptyset (&sa.sa_mask);
4196 sigaddset (&sa.sa_mask, w->signum);
4197 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4198 }
2498#endif 4199#endif
2499 } 4200 }
2500 4201
2501 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
2502} 4203}
2503 4204
2504void noinline 4205noinline
4206void
2505ev_signal_stop (EV_P_ ev_signal *w) 4207ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2506{ 4208{
2507 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
2508 if (expect_false (!ev_is_active (w))) 4210 if (expect_false (!ev_is_active (w)))
2509 return; 4211 return;
2510 4212
… …
2512 4214
2513 wlist_del (&signals [w->signum - 1].head, (WL)w); 4215 wlist_del (&signals [w->signum - 1].head, (WL)w);
2514 ev_stop (EV_A_ (W)w); 4216 ev_stop (EV_A_ (W)w);
2515 4217
2516 if (!signals [w->signum - 1].head) 4218 if (!signals [w->signum - 1].head)
4219 {
4220#if EV_MULTIPLICITY
4221 signals [w->signum - 1].loop = 0; /* unattach from signal */
4222#endif
4223#if EV_USE_SIGNALFD
4224 if (sigfd >= 0)
4225 {
4226 sigset_t ss;
4227
4228 sigemptyset (&ss);
4229 sigaddset (&ss, w->signum);
4230 sigdelset (&sigfd_set, w->signum);
4231
4232 signalfd (sigfd, &sigfd_set, 0);
4233 sigprocmask (SIG_UNBLOCK, &ss, 0);
4234 }
4235 else
4236#endif
2517 signal (w->signum, SIG_DFL); 4237 signal (w->signum, SIG_DFL);
4238 }
2518 4239
2519 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
2520} 4241}
2521 4242
4243#endif
4244
4245#if EV_CHILD_ENABLE
4246
2522void 4247void
2523ev_child_start (EV_P_ ev_child *w) 4248ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2524{ 4249{
2525#if EV_MULTIPLICITY 4250#if EV_MULTIPLICITY
2526 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4251 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2527#endif 4252#endif
2528 if (expect_false (ev_is_active (w))) 4253 if (expect_false (ev_is_active (w)))
2529 return; 4254 return;
2530 4255
2531 EV_FREQUENT_CHECK; 4256 EV_FREQUENT_CHECK;
2532 4257
2533 ev_start (EV_A_ (W)w, 1); 4258 ev_start (EV_A_ (W)w, 1);
2534 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4259 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2535 4260
2536 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
2537} 4262}
2538 4263
2539void 4264void
2540ev_child_stop (EV_P_ ev_child *w) 4265ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2541{ 4266{
2542 clear_pending (EV_A_ (W)w); 4267 clear_pending (EV_A_ (W)w);
2543 if (expect_false (!ev_is_active (w))) 4268 if (expect_false (!ev_is_active (w)))
2544 return; 4269 return;
2545 4270
2546 EV_FREQUENT_CHECK; 4271 EV_FREQUENT_CHECK;
2547 4272
2548 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4273 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2549 ev_stop (EV_A_ (W)w); 4274 ev_stop (EV_A_ (W)w);
2550 4275
2551 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
2552} 4277}
4278
4279#endif
2553 4280
2554#if EV_STAT_ENABLE 4281#if EV_STAT_ENABLE
2555 4282
2556# ifdef _WIN32 4283# ifdef _WIN32
2557# undef lstat 4284# undef lstat
… …
2560 4287
2561#define DEF_STAT_INTERVAL 5.0074891 4288#define DEF_STAT_INTERVAL 5.0074891
2562#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4289#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2563#define MIN_STAT_INTERVAL 0.1074891 4290#define MIN_STAT_INTERVAL 0.1074891
2564 4291
2565static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4292noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2566 4293
2567#if EV_USE_INOTIFY 4294#if EV_USE_INOTIFY
2568# define EV_INOTIFY_BUFSIZE 8192
2569 4295
2570static void noinline 4296/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4297# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4298
4299noinline
4300static void
2571infy_add (EV_P_ ev_stat *w) 4301infy_add (EV_P_ ev_stat *w)
2572{ 4302{
2573 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); 4303 w->wd = inotify_add_watch (fs_fd, w->path,
4304 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4305 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4306 | IN_DONT_FOLLOW | IN_MASK_ADD);
2574 4307
2575 if (w->wd < 0) 4308 if (w->wd >= 0)
4309 {
4310 struct statfs sfs;
4311
4312 /* now local changes will be tracked by inotify, but remote changes won't */
4313 /* unless the filesystem is known to be local, we therefore still poll */
4314 /* also do poll on <2.6.25, but with normal frequency */
4315
4316 if (!fs_2625)
4317 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4318 else if (!statfs (w->path, &sfs)
4319 && (sfs.f_type == 0x1373 /* devfs */
4320 || sfs.f_type == 0x4006 /* fat */
4321 || sfs.f_type == 0x4d44 /* msdos */
4322 || sfs.f_type == 0xEF53 /* ext2/3 */
4323 || sfs.f_type == 0x72b6 /* jffs2 */
4324 || sfs.f_type == 0x858458f6 /* ramfs */
4325 || sfs.f_type == 0x5346544e /* ntfs */
4326 || sfs.f_type == 0x3153464a /* jfs */
4327 || sfs.f_type == 0x9123683e /* btrfs */
4328 || sfs.f_type == 0x52654973 /* reiser3 */
4329 || sfs.f_type == 0x01021994 /* tmpfs */
4330 || sfs.f_type == 0x58465342 /* xfs */))
4331 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4332 else
4333 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2576 { 4334 }
4335 else
4336 {
4337 /* can't use inotify, continue to stat */
2577 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4338 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2578 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2579 4339
2580 /* monitor some parent directory for speedup hints */ 4340 /* if path is not there, monitor some parent directory for speedup hints */
2581 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4341 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2582 /* but an efficiency issue only */ 4342 /* but an efficiency issue only */
2583 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4343 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2584 { 4344 {
2585 char path [4096]; 4345 char path [4096];
… …
2595 if (!pend || pend == path) 4355 if (!pend || pend == path)
2596 break; 4356 break;
2597 4357
2598 *pend = 0; 4358 *pend = 0;
2599 w->wd = inotify_add_watch (fs_fd, path, mask); 4359 w->wd = inotify_add_watch (fs_fd, path, mask);
2600 } 4360 }
2601 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4361 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2602 } 4362 }
2603 } 4363 }
2604 4364
2605 if (w->wd >= 0) 4365 if (w->wd >= 0)
2606 {
2607 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4366 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2608 4367
2609 /* now local changes will be tracked by inotify, but remote changes won't */ 4368 /* now re-arm timer, if required */
2610 /* unless the filesystem it known to be local, we therefore still poll */ 4369 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2611 /* also do poll on <2.6.25, but with normal frequency */
2612 struct statfs sfs;
2613
2614 if (fs_2625 && !statfs (w->path, &sfs))
2615 if (sfs.f_type == 0x1373 /* devfs */
2616 || sfs.f_type == 0xEF53 /* ext2/3 */
2617 || sfs.f_type == 0x3153464a /* jfs */
2618 || sfs.f_type == 0x52654973 /* reiser3 */
2619 || sfs.f_type == 0x01021994 /* tempfs */
2620 || sfs.f_type == 0x58465342 /* xfs */)
2621 return;
2622
2623 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2624 ev_timer_again (EV_A_ &w->timer); 4370 ev_timer_again (EV_A_ &w->timer);
2625 } 4371 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2626} 4372}
2627 4373
2628static void noinline 4374noinline
4375static void
2629infy_del (EV_P_ ev_stat *w) 4376infy_del (EV_P_ ev_stat *w)
2630{ 4377{
2631 int slot; 4378 int slot;
2632 int wd = w->wd; 4379 int wd = w->wd;
2633 4380
2634 if (wd < 0) 4381 if (wd < 0)
2635 return; 4382 return;
2636 4383
2637 w->wd = -2; 4384 w->wd = -2;
2638 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4385 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2639 wlist_del (&fs_hash [slot].head, (WL)w); 4386 wlist_del (&fs_hash [slot].head, (WL)w);
2640 4387
2641 /* remove this watcher, if others are watching it, they will rearm */ 4388 /* remove this watcher, if others are watching it, they will rearm */
2642 inotify_rm_watch (fs_fd, wd); 4389 inotify_rm_watch (fs_fd, wd);
2643} 4390}
2644 4391
2645static void noinline 4392noinline
4393static void
2646infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4394infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2647{ 4395{
2648 if (slot < 0) 4396 if (slot < 0)
2649 /* overflow, need to check for all hash slots */ 4397 /* overflow, need to check for all hash slots */
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4398 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 infy_wd (EV_A_ slot, wd, ev); 4399 infy_wd (EV_A_ slot, wd, ev);
2652 else 4400 else
2653 { 4401 {
2654 WL w_; 4402 WL w_;
2655 4403
2656 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4404 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2657 { 4405 {
2658 ev_stat *w = (ev_stat *)w_; 4406 ev_stat *w = (ev_stat *)w_;
2659 w_ = w_->next; /* lets us remove this watcher and all before it */ 4407 w_ = w_->next; /* lets us remove this watcher and all before it */
2660 4408
2661 if (w->wd == wd || wd == -1) 4409 if (w->wd == wd || wd == -1)
2662 { 4410 {
2663 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4411 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2664 { 4412 {
2665 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4413 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2666 w->wd = -1; 4414 w->wd = -1;
2667 infy_add (EV_A_ w); /* re-add, no matter what */ 4415 infy_add (EV_A_ w); /* re-add, no matter what */
2668 } 4416 }
2669 4417
2670 stat_timer_cb (EV_A_ &w->timer, 0); 4418 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2675 4423
2676static void 4424static void
2677infy_cb (EV_P_ ev_io *w, int revents) 4425infy_cb (EV_P_ ev_io *w, int revents)
2678{ 4426{
2679 char buf [EV_INOTIFY_BUFSIZE]; 4427 char buf [EV_INOTIFY_BUFSIZE];
2680 struct inotify_event *ev = (struct inotify_event *)buf;
2681 int ofs; 4428 int ofs;
2682 int len = read (fs_fd, buf, sizeof (buf)); 4429 int len = read (fs_fd, buf, sizeof (buf));
2683 4430
2684 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4431 for (ofs = 0; ofs < len; )
4432 {
4433 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2685 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4434 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4435 ofs += sizeof (struct inotify_event) + ev->len;
4436 }
2686} 4437}
2687 4438
2688inline_size void 4439inline_size ecb_cold
4440void
2689check_2625 (EV_P) 4441ev_check_2625 (EV_P)
2690{ 4442{
2691 /* kernels < 2.6.25 are borked 4443 /* kernels < 2.6.25 are borked
2692 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4444 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2693 */ 4445 */
2694 struct utsname buf; 4446 if (ev_linux_version () < 0x020619)
2695 int major, minor, micro;
2696
2697 if (uname (&buf))
2698 return; 4447 return;
2699 4448
2700 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2701 return;
2702
2703 if (major < 2
2704 || (major == 2 && minor < 6)
2705 || (major == 2 && minor == 6 && micro < 25))
2706 return;
2707
2708 fs_2625 = 1; 4449 fs_2625 = 1;
4450}
4451
4452inline_size int
4453infy_newfd (void)
4454{
4455#if defined IN_CLOEXEC && defined IN_NONBLOCK
4456 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4457 if (fd >= 0)
4458 return fd;
4459#endif
4460 return inotify_init ();
2709} 4461}
2710 4462
2711inline_size void 4463inline_size void
2712infy_init (EV_P) 4464infy_init (EV_P)
2713{ 4465{
2714 if (fs_fd != -2) 4466 if (fs_fd != -2)
2715 return; 4467 return;
2716 4468
2717 fs_fd = -1; 4469 fs_fd = -1;
2718 4470
2719 check_2625 (EV_A); 4471 ev_check_2625 (EV_A);
2720 4472
2721 fs_fd = inotify_init (); 4473 fs_fd = infy_newfd ();
2722 4474
2723 if (fs_fd >= 0) 4475 if (fs_fd >= 0)
2724 { 4476 {
4477 fd_intern (fs_fd);
2725 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4478 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2726 ev_set_priority (&fs_w, EV_MAXPRI); 4479 ev_set_priority (&fs_w, EV_MAXPRI);
2727 ev_io_start (EV_A_ &fs_w); 4480 ev_io_start (EV_A_ &fs_w);
4481 ev_unref (EV_A);
2728 } 4482 }
2729} 4483}
2730 4484
2731inline_size void 4485inline_size void
2732infy_fork (EV_P) 4486infy_fork (EV_P)
… …
2734 int slot; 4488 int slot;
2735 4489
2736 if (fs_fd < 0) 4490 if (fs_fd < 0)
2737 return; 4491 return;
2738 4492
4493 ev_ref (EV_A);
4494 ev_io_stop (EV_A_ &fs_w);
2739 close (fs_fd); 4495 close (fs_fd);
2740 fs_fd = inotify_init (); 4496 fs_fd = infy_newfd ();
2741 4497
4498 if (fs_fd >= 0)
4499 {
4500 fd_intern (fs_fd);
4501 ev_io_set (&fs_w, fs_fd, EV_READ);
4502 ev_io_start (EV_A_ &fs_w);
4503 ev_unref (EV_A);
4504 }
4505
2742 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4506 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2743 { 4507 {
2744 WL w_ = fs_hash [slot].head; 4508 WL w_ = fs_hash [slot].head;
2745 fs_hash [slot].head = 0; 4509 fs_hash [slot].head = 0;
2746 4510
2747 while (w_) 4511 while (w_)
… …
2752 w->wd = -1; 4516 w->wd = -1;
2753 4517
2754 if (fs_fd >= 0) 4518 if (fs_fd >= 0)
2755 infy_add (EV_A_ w); /* re-add, no matter what */ 4519 infy_add (EV_A_ w); /* re-add, no matter what */
2756 else 4520 else
4521 {
4522 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4523 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2757 ev_timer_again (EV_A_ &w->timer); 4524 ev_timer_again (EV_A_ &w->timer);
4525 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4526 }
2758 } 4527 }
2759 } 4528 }
2760} 4529}
2761 4530
2762#endif 4531#endif
… …
2766#else 4535#else
2767# define EV_LSTAT(p,b) lstat (p, b) 4536# define EV_LSTAT(p,b) lstat (p, b)
2768#endif 4537#endif
2769 4538
2770void 4539void
2771ev_stat_stat (EV_P_ ev_stat *w) 4540ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2772{ 4541{
2773 if (lstat (w->path, &w->attr) < 0) 4542 if (lstat (w->path, &w->attr) < 0)
2774 w->attr.st_nlink = 0; 4543 w->attr.st_nlink = 0;
2775 else if (!w->attr.st_nlink) 4544 else if (!w->attr.st_nlink)
2776 w->attr.st_nlink = 1; 4545 w->attr.st_nlink = 1;
2777} 4546}
2778 4547
2779static void noinline 4548noinline
4549static void
2780stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4550stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2781{ 4551{
2782 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4552 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2783 4553
2784 /* we copy this here each the time so that */ 4554 ev_statdata prev = w->attr;
2785 /* prev has the old value when the callback gets invoked */
2786 w->prev = w->attr;
2787 ev_stat_stat (EV_A_ w); 4555 ev_stat_stat (EV_A_ w);
2788 4556
2789 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4557 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2790 if ( 4558 if (
2791 w->prev.st_dev != w->attr.st_dev 4559 prev.st_dev != w->attr.st_dev
2792 || w->prev.st_ino != w->attr.st_ino 4560 || prev.st_ino != w->attr.st_ino
2793 || w->prev.st_mode != w->attr.st_mode 4561 || prev.st_mode != w->attr.st_mode
2794 || w->prev.st_nlink != w->attr.st_nlink 4562 || prev.st_nlink != w->attr.st_nlink
2795 || w->prev.st_uid != w->attr.st_uid 4563 || prev.st_uid != w->attr.st_uid
2796 || w->prev.st_gid != w->attr.st_gid 4564 || prev.st_gid != w->attr.st_gid
2797 || w->prev.st_rdev != w->attr.st_rdev 4565 || prev.st_rdev != w->attr.st_rdev
2798 || w->prev.st_size != w->attr.st_size 4566 || prev.st_size != w->attr.st_size
2799 || w->prev.st_atime != w->attr.st_atime 4567 || prev.st_atime != w->attr.st_atime
2800 || w->prev.st_mtime != w->attr.st_mtime 4568 || prev.st_mtime != w->attr.st_mtime
2801 || w->prev.st_ctime != w->attr.st_ctime 4569 || prev.st_ctime != w->attr.st_ctime
2802 ) { 4570 ) {
4571 /* we only update w->prev on actual differences */
4572 /* in case we test more often than invoke the callback, */
4573 /* to ensure that prev is always different to attr */
4574 w->prev = prev;
4575
2803 #if EV_USE_INOTIFY 4576 #if EV_USE_INOTIFY
2804 if (fs_fd >= 0) 4577 if (fs_fd >= 0)
2805 { 4578 {
2806 infy_del (EV_A_ w); 4579 infy_del (EV_A_ w);
2807 infy_add (EV_A_ w); 4580 infy_add (EV_A_ w);
… …
2812 ev_feed_event (EV_A_ w, EV_STAT); 4585 ev_feed_event (EV_A_ w, EV_STAT);
2813 } 4586 }
2814} 4587}
2815 4588
2816void 4589void
2817ev_stat_start (EV_P_ ev_stat *w) 4590ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2818{ 4591{
2819 if (expect_false (ev_is_active (w))) 4592 if (expect_false (ev_is_active (w)))
2820 return; 4593 return;
2821 4594
2822 ev_stat_stat (EV_A_ w); 4595 ev_stat_stat (EV_A_ w);
… …
2832 4605
2833 if (fs_fd >= 0) 4606 if (fs_fd >= 0)
2834 infy_add (EV_A_ w); 4607 infy_add (EV_A_ w);
2835 else 4608 else
2836#endif 4609#endif
4610 {
2837 ev_timer_again (EV_A_ &w->timer); 4611 ev_timer_again (EV_A_ &w->timer);
4612 ev_unref (EV_A);
4613 }
2838 4614
2839 ev_start (EV_A_ (W)w, 1); 4615 ev_start (EV_A_ (W)w, 1);
2840 4616
2841 EV_FREQUENT_CHECK; 4617 EV_FREQUENT_CHECK;
2842} 4618}
2843 4619
2844void 4620void
2845ev_stat_stop (EV_P_ ev_stat *w) 4621ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2846{ 4622{
2847 clear_pending (EV_A_ (W)w); 4623 clear_pending (EV_A_ (W)w);
2848 if (expect_false (!ev_is_active (w))) 4624 if (expect_false (!ev_is_active (w)))
2849 return; 4625 return;
2850 4626
2851 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
2852 4628
2853#if EV_USE_INOTIFY 4629#if EV_USE_INOTIFY
2854 infy_del (EV_A_ w); 4630 infy_del (EV_A_ w);
2855#endif 4631#endif
4632
4633 if (ev_is_active (&w->timer))
4634 {
4635 ev_ref (EV_A);
2856 ev_timer_stop (EV_A_ &w->timer); 4636 ev_timer_stop (EV_A_ &w->timer);
4637 }
2857 4638
2858 ev_stop (EV_A_ (W)w); 4639 ev_stop (EV_A_ (W)w);
2859 4640
2860 EV_FREQUENT_CHECK; 4641 EV_FREQUENT_CHECK;
2861} 4642}
2862#endif 4643#endif
2863 4644
2864#if EV_IDLE_ENABLE 4645#if EV_IDLE_ENABLE
2865void 4646void
2866ev_idle_start (EV_P_ ev_idle *w) 4647ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2867{ 4648{
2868 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
2869 return; 4650 return;
2870 4651
2871 pri_adjust (EV_A_ (W)w); 4652 pri_adjust (EV_A_ (W)w);
… …
2876 int active = ++idlecnt [ABSPRI (w)]; 4657 int active = ++idlecnt [ABSPRI (w)];
2877 4658
2878 ++idleall; 4659 ++idleall;
2879 ev_start (EV_A_ (W)w, active); 4660 ev_start (EV_A_ (W)w, active);
2880 4661
2881 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4662 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2882 idles [ABSPRI (w)][active - 1] = w; 4663 idles [ABSPRI (w)][active - 1] = w;
2883 } 4664 }
2884 4665
2885 EV_FREQUENT_CHECK; 4666 EV_FREQUENT_CHECK;
2886} 4667}
2887 4668
2888void 4669void
2889ev_idle_stop (EV_P_ ev_idle *w) 4670ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2890{ 4671{
2891 clear_pending (EV_A_ (W)w); 4672 clear_pending (EV_A_ (W)w);
2892 if (expect_false (!ev_is_active (w))) 4673 if (expect_false (!ev_is_active (w)))
2893 return; 4674 return;
2894 4675
… …
2906 4687
2907 EV_FREQUENT_CHECK; 4688 EV_FREQUENT_CHECK;
2908} 4689}
2909#endif 4690#endif
2910 4691
4692#if EV_PREPARE_ENABLE
2911void 4693void
2912ev_prepare_start (EV_P_ ev_prepare *w) 4694ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2913{ 4695{
2914 if (expect_false (ev_is_active (w))) 4696 if (expect_false (ev_is_active (w)))
2915 return; 4697 return;
2916 4698
2917 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
2918 4700
2919 ev_start (EV_A_ (W)w, ++preparecnt); 4701 ev_start (EV_A_ (W)w, ++preparecnt);
2920 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4702 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2921 prepares [preparecnt - 1] = w; 4703 prepares [preparecnt - 1] = w;
2922 4704
2923 EV_FREQUENT_CHECK; 4705 EV_FREQUENT_CHECK;
2924} 4706}
2925 4707
2926void 4708void
2927ev_prepare_stop (EV_P_ ev_prepare *w) 4709ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2928{ 4710{
2929 clear_pending (EV_A_ (W)w); 4711 clear_pending (EV_A_ (W)w);
2930 if (expect_false (!ev_is_active (w))) 4712 if (expect_false (!ev_is_active (w)))
2931 return; 4713 return;
2932 4714
… …
2941 4723
2942 ev_stop (EV_A_ (W)w); 4724 ev_stop (EV_A_ (W)w);
2943 4725
2944 EV_FREQUENT_CHECK; 4726 EV_FREQUENT_CHECK;
2945} 4727}
4728#endif
2946 4729
4730#if EV_CHECK_ENABLE
2947void 4731void
2948ev_check_start (EV_P_ ev_check *w) 4732ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2949{ 4733{
2950 if (expect_false (ev_is_active (w))) 4734 if (expect_false (ev_is_active (w)))
2951 return; 4735 return;
2952 4736
2953 EV_FREQUENT_CHECK; 4737 EV_FREQUENT_CHECK;
2954 4738
2955 ev_start (EV_A_ (W)w, ++checkcnt); 4739 ev_start (EV_A_ (W)w, ++checkcnt);
2956 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4740 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2957 checks [checkcnt - 1] = w; 4741 checks [checkcnt - 1] = w;
2958 4742
2959 EV_FREQUENT_CHECK; 4743 EV_FREQUENT_CHECK;
2960} 4744}
2961 4745
2962void 4746void
2963ev_check_stop (EV_P_ ev_check *w) 4747ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2964{ 4748{
2965 clear_pending (EV_A_ (W)w); 4749 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 4750 if (expect_false (!ev_is_active (w)))
2967 return; 4751 return;
2968 4752
… …
2977 4761
2978 ev_stop (EV_A_ (W)w); 4762 ev_stop (EV_A_ (W)w);
2979 4763
2980 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
2981} 4765}
4766#endif
2982 4767
2983#if EV_EMBED_ENABLE 4768#if EV_EMBED_ENABLE
2984void noinline 4769noinline
4770void
2985ev_embed_sweep (EV_P_ ev_embed *w) 4771ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2986{ 4772{
2987 ev_loop (w->other, EVLOOP_NONBLOCK); 4773 ev_run (w->other, EVRUN_NOWAIT);
2988} 4774}
2989 4775
2990static void 4776static void
2991embed_io_cb (EV_P_ ev_io *io, int revents) 4777embed_io_cb (EV_P_ ev_io *io, int revents)
2992{ 4778{
2993 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4779 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2994 4780
2995 if (ev_cb (w)) 4781 if (ev_cb (w))
2996 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4782 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2997 else 4783 else
2998 ev_loop (w->other, EVLOOP_NONBLOCK); 4784 ev_run (w->other, EVRUN_NOWAIT);
2999} 4785}
3000 4786
3001static void 4787static void
3002embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4788embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3003{ 4789{
3004 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4790 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3005 4791
3006 { 4792 {
3007 struct ev_loop *loop = w->other; 4793 EV_P = w->other;
3008 4794
3009 while (fdchangecnt) 4795 while (fdchangecnt)
3010 { 4796 {
3011 fd_reify (EV_A); 4797 fd_reify (EV_A);
3012 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4798 ev_run (EV_A_ EVRUN_NOWAIT);
3013 } 4799 }
3014 } 4800 }
3015} 4801}
3016 4802
3017static void 4803static void
… …
3020 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4806 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3021 4807
3022 ev_embed_stop (EV_A_ w); 4808 ev_embed_stop (EV_A_ w);
3023 4809
3024 { 4810 {
3025 struct ev_loop *loop = w->other; 4811 EV_P = w->other;
3026 4812
3027 ev_loop_fork (EV_A); 4813 ev_loop_fork (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4814 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 4815 }
3030 4816
3031 ev_embed_start (EV_A_ w); 4817 ev_embed_start (EV_A_ w);
3032} 4818}
3033 4819
… …
3038 ev_idle_stop (EV_A_ idle); 4824 ev_idle_stop (EV_A_ idle);
3039} 4825}
3040#endif 4826#endif
3041 4827
3042void 4828void
3043ev_embed_start (EV_P_ ev_embed *w) 4829ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3044{ 4830{
3045 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
3046 return; 4832 return;
3047 4833
3048 { 4834 {
3049 struct ev_loop *loop = w->other; 4835 EV_P = w->other;
3050 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4836 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3051 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4837 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3052 } 4838 }
3053 4839
3054 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
3069 4855
3070 EV_FREQUENT_CHECK; 4856 EV_FREQUENT_CHECK;
3071} 4857}
3072 4858
3073void 4859void
3074ev_embed_stop (EV_P_ ev_embed *w) 4860ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3075{ 4861{
3076 clear_pending (EV_A_ (W)w); 4862 clear_pending (EV_A_ (W)w);
3077 if (expect_false (!ev_is_active (w))) 4863 if (expect_false (!ev_is_active (w)))
3078 return; 4864 return;
3079 4865
… …
3081 4867
3082 ev_io_stop (EV_A_ &w->io); 4868 ev_io_stop (EV_A_ &w->io);
3083 ev_prepare_stop (EV_A_ &w->prepare); 4869 ev_prepare_stop (EV_A_ &w->prepare);
3084 ev_fork_stop (EV_A_ &w->fork); 4870 ev_fork_stop (EV_A_ &w->fork);
3085 4871
4872 ev_stop (EV_A_ (W)w);
4873
3086 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3087} 4875}
3088#endif 4876#endif
3089 4877
3090#if EV_FORK_ENABLE 4878#if EV_FORK_ENABLE
3091void 4879void
3092ev_fork_start (EV_P_ ev_fork *w) 4880ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3093{ 4881{
3094 if (expect_false (ev_is_active (w))) 4882 if (expect_false (ev_is_active (w)))
3095 return; 4883 return;
3096 4884
3097 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
3098 4886
3099 ev_start (EV_A_ (W)w, ++forkcnt); 4887 ev_start (EV_A_ (W)w, ++forkcnt);
3100 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4888 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3101 forks [forkcnt - 1] = w; 4889 forks [forkcnt - 1] = w;
3102 4890
3103 EV_FREQUENT_CHECK; 4891 EV_FREQUENT_CHECK;
3104} 4892}
3105 4893
3106void 4894void
3107ev_fork_stop (EV_P_ ev_fork *w) 4895ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3108{ 4896{
3109 clear_pending (EV_A_ (W)w); 4897 clear_pending (EV_A_ (W)w);
3110 if (expect_false (!ev_is_active (w))) 4898 if (expect_false (!ev_is_active (w)))
3111 return; 4899 return;
3112 4900
… …
3123 4911
3124 EV_FREQUENT_CHECK; 4912 EV_FREQUENT_CHECK;
3125} 4913}
3126#endif 4914#endif
3127 4915
3128#if EV_ASYNC_ENABLE 4916#if EV_CLEANUP_ENABLE
3129void 4917void
3130ev_async_start (EV_P_ ev_async *w) 4918ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3131{ 4919{
3132 if (expect_false (ev_is_active (w))) 4920 if (expect_false (ev_is_active (w)))
3133 return; 4921 return;
3134 4922
3135 evpipe_init (EV_A);
3136
3137 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3138 4924
3139 ev_start (EV_A_ (W)w, ++asynccnt); 4925 ev_start (EV_A_ (W)w, ++cleanupcnt);
3140 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4926 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3141 asyncs [asynccnt - 1] = w; 4927 cleanups [cleanupcnt - 1] = w;
3142 4928
4929 /* cleanup watchers should never keep a refcount on the loop */
4930 ev_unref (EV_A);
3143 EV_FREQUENT_CHECK; 4931 EV_FREQUENT_CHECK;
3144} 4932}
3145 4933
3146void 4934void
3147ev_async_stop (EV_P_ ev_async *w) 4935ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3148{ 4936{
3149 clear_pending (EV_A_ (W)w); 4937 clear_pending (EV_A_ (W)w);
3150 if (expect_false (!ev_is_active (w))) 4938 if (expect_false (!ev_is_active (w)))
3151 return; 4939 return;
3152 4940
3153 EV_FREQUENT_CHECK; 4941 EV_FREQUENT_CHECK;
4942 ev_ref (EV_A);
4943
4944 {
4945 int active = ev_active (w);
4946
4947 cleanups [active - 1] = cleanups [--cleanupcnt];
4948 ev_active (cleanups [active - 1]) = active;
4949 }
4950
4951 ev_stop (EV_A_ (W)w);
4952
4953 EV_FREQUENT_CHECK;
4954}
4955#endif
4956
4957#if EV_ASYNC_ENABLE
4958void
4959ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4960{
4961 if (expect_false (ev_is_active (w)))
4962 return;
4963
4964 w->sent = 0;
4965
4966 evpipe_init (EV_A);
4967
4968 EV_FREQUENT_CHECK;
4969
4970 ev_start (EV_A_ (W)w, ++asynccnt);
4971 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4972 asyncs [asynccnt - 1] = w;
4973
4974 EV_FREQUENT_CHECK;
4975}
4976
4977void
4978ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4979{
4980 clear_pending (EV_A_ (W)w);
4981 if (expect_false (!ev_is_active (w)))
4982 return;
4983
4984 EV_FREQUENT_CHECK;
3154 4985
3155 { 4986 {
3156 int active = ev_active (w); 4987 int active = ev_active (w);
3157 4988
3158 asyncs [active - 1] = asyncs [--asynccnt]; 4989 asyncs [active - 1] = asyncs [--asynccnt];
… …
3163 4994
3164 EV_FREQUENT_CHECK; 4995 EV_FREQUENT_CHECK;
3165} 4996}
3166 4997
3167void 4998void
3168ev_async_send (EV_P_ ev_async *w) 4999ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3169{ 5000{
3170 w->sent = 1; 5001 w->sent = 1;
3171 evpipe_write (EV_A_ &gotasync); 5002 evpipe_write (EV_A_ &async_pending);
3172} 5003}
3173#endif 5004#endif
3174 5005
3175/*****************************************************************************/ 5006/*****************************************************************************/
3176 5007
… …
3210 5041
3211 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5042 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3212} 5043}
3213 5044
3214void 5045void
3215ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5046ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3216{ 5047{
3217 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5048 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3218
3219 if (expect_false (!once))
3220 {
3221 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3222 return;
3223 }
3224 5049
3225 once->cb = cb; 5050 once->cb = cb;
3226 once->arg = arg; 5051 once->arg = arg;
3227 5052
3228 ev_init (&once->io, once_cb_io); 5053 ev_init (&once->io, once_cb_io);
… …
3241} 5066}
3242 5067
3243/*****************************************************************************/ 5068/*****************************************************************************/
3244 5069
3245#if EV_WALK_ENABLE 5070#if EV_WALK_ENABLE
5071ecb_cold
3246void 5072void
3247ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5073ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3248{ 5074{
3249 int i, j; 5075 int i, j;
3250 ev_watcher_list *wl, *wn; 5076 ev_watcher_list *wl, *wn;
3251 5077
3252 if (types & (EV_IO | EV_EMBED)) 5078 if (types & (EV_IO | EV_EMBED))
… …
3295 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5121 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3296#endif 5122#endif
3297 5123
3298#if EV_IDLE_ENABLE 5124#if EV_IDLE_ENABLE
3299 if (types & EV_IDLE) 5125 if (types & EV_IDLE)
3300 for (j = NUMPRI; i--; ) 5126 for (j = NUMPRI; j--; )
3301 for (i = idlecnt [j]; i--; ) 5127 for (i = idlecnt [j]; i--; )
3302 cb (EV_A_ EV_IDLE, idles [j][i]); 5128 cb (EV_A_ EV_IDLE, idles [j][i]);
3303#endif 5129#endif
3304 5130
3305#if EV_FORK_ENABLE 5131#if EV_FORK_ENABLE
… …
3313 if (types & EV_ASYNC) 5139 if (types & EV_ASYNC)
3314 for (i = asynccnt; i--; ) 5140 for (i = asynccnt; i--; )
3315 cb (EV_A_ EV_ASYNC, asyncs [i]); 5141 cb (EV_A_ EV_ASYNC, asyncs [i]);
3316#endif 5142#endif
3317 5143
5144#if EV_PREPARE_ENABLE
3318 if (types & EV_PREPARE) 5145 if (types & EV_PREPARE)
3319 for (i = preparecnt; i--; ) 5146 for (i = preparecnt; i--; )
3320#if EV_EMBED_ENABLE 5147# if EV_EMBED_ENABLE
3321 if (ev_cb (prepares [i]) != embed_prepare_cb) 5148 if (ev_cb (prepares [i]) != embed_prepare_cb)
3322#endif 5149# endif
3323 cb (EV_A_ EV_PREPARE, prepares [i]); 5150 cb (EV_A_ EV_PREPARE, prepares [i]);
5151#endif
3324 5152
5153#if EV_CHECK_ENABLE
3325 if (types & EV_CHECK) 5154 if (types & EV_CHECK)
3326 for (i = checkcnt; i--; ) 5155 for (i = checkcnt; i--; )
3327 cb (EV_A_ EV_CHECK, checks [i]); 5156 cb (EV_A_ EV_CHECK, checks [i]);
5157#endif
3328 5158
5159#if EV_SIGNAL_ENABLE
3329 if (types & EV_SIGNAL) 5160 if (types & EV_SIGNAL)
3330 for (i = 0; i < signalmax; ++i) 5161 for (i = 0; i < EV_NSIG - 1; ++i)
3331 for (wl = signals [i].head; wl; ) 5162 for (wl = signals [i].head; wl; )
3332 { 5163 {
3333 wn = wl->next; 5164 wn = wl->next;
3334 cb (EV_A_ EV_SIGNAL, wl); 5165 cb (EV_A_ EV_SIGNAL, wl);
3335 wl = wn; 5166 wl = wn;
3336 } 5167 }
5168#endif
3337 5169
5170#if EV_CHILD_ENABLE
3338 if (types & EV_CHILD) 5171 if (types & EV_CHILD)
3339 for (i = EV_PID_HASHSIZE; i--; ) 5172 for (i = (EV_PID_HASHSIZE); i--; )
3340 for (wl = childs [i]; wl; ) 5173 for (wl = childs [i]; wl; )
3341 { 5174 {
3342 wn = wl->next; 5175 wn = wl->next;
3343 cb (EV_A_ EV_CHILD, wl); 5176 cb (EV_A_ EV_CHILD, wl);
3344 wl = wn; 5177 wl = wn;
3345 } 5178 }
5179#endif
3346/* EV_STAT 0x00001000 /* stat data changed */ 5180/* EV_STAT 0x00001000 /* stat data changed */
3347/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5181/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3348} 5182}
3349#endif 5183#endif
3350 5184
3351#if EV_MULTIPLICITY 5185#if EV_MULTIPLICITY
3352 #include "ev_wrap.h" 5186 #include "ev_wrap.h"
3353#endif 5187#endif
3354 5188
3355#ifdef __cplusplus
3356}
3357#endif
3358

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