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Comparing libev/ev.c (file contents):
Revision 1.250 by root, Thu May 22 02:44:57 2008 UTC vs.
Revision 1.500 by root, Mon Jul 1 20:47:37 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52# endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
100# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
102# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
109# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
110# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
111# else
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
114# endif 136# endif
115 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
116# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
122# endif 145# endif
123 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_INOTIFY
125# if HAVE_EVENTFD 149# define EV_USE_INOTIFY EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
154# endif
155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
157# ifndef EV_USE_SIGNALFD
158# define EV_USE_SIGNALFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_SIGNALFD
162# define EV_USE_SIGNALFD 0
163# endif
164
165# if HAVE_EVENTFD
166# ifndef EV_USE_EVENTFD
167# define EV_USE_EVENTFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0
130# endif 172# endif
131 173
132#endif 174#endif
133 175
134#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
135#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
136#include <fcntl.h> 188#include <fcntl.h>
137#include <stddef.h> 189#include <stddef.h>
138 190
139#include <stdio.h> 191#include <stdio.h>
140 192
141#include <assert.h> 193#include <assert.h>
142#include <errno.h> 194#include <errno.h>
143#include <sys/types.h> 195#include <sys/types.h>
144#include <time.h> 196#include <time.h>
197#include <limits.h>
145 198
146#include <signal.h> 199#include <signal.h>
147 200
148#ifdef EV_H 201#ifdef EV_H
149# include EV_H 202# include EV_H
150#else 203#else
151# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
152#endif 216#endif
153 217
154#ifndef _WIN32 218#ifndef _WIN32
155# include <sys/time.h> 219# include <sys/time.h>
156# include <sys/wait.h> 220# include <sys/wait.h>
157# include <unistd.h> 221# include <unistd.h>
158#else 222#else
223# include <io.h>
159# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
160# include <windows.h> 226# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
163# endif 229# endif
230# undef EV_AVOID_STDIO
164#endif 231#endif
165 232
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
167 234
235/* try to deduce the maximum number of signals on this platform */
236#if defined EV_NSIG
237/* use what's provided */
238#elif defined NSIG
239# define EV_NSIG (NSIG)
240#elif defined _NSIG
241# define EV_NSIG (_NSIG)
242#elif defined SIGMAX
243# define EV_NSIG (SIGMAX+1)
244#elif defined SIG_MAX
245# define EV_NSIG (SIG_MAX+1)
246#elif defined _SIG_MAX
247# define EV_NSIG (_SIG_MAX+1)
248#elif defined MAXSIG
249# define EV_NSIG (MAXSIG+1)
250#elif defined MAX_SIG
251# define EV_NSIG (MAX_SIG+1)
252#elif defined SIGARRAYSIZE
253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
254#elif defined _sys_nsig
255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
256#else
257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
258#endif
259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
262#endif
263
264#ifndef EV_USE_CLOCK_SYSCALL
265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
267# else
268# define EV_USE_CLOCK_SYSCALL 0
269# endif
270#endif
271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
168#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
283# define EV_USE_MONOTONIC EV_FEATURE_OS
284# else
169# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
286# endif
170#endif 287#endif
171 288
172#ifndef EV_USE_REALTIME 289#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 291#endif
175 292
176#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
294# if _POSIX_C_SOURCE >= 199309L
295# define EV_USE_NANOSLEEP EV_FEATURE_OS
296# else
177# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
298# endif
178#endif 299#endif
179 300
180#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 303#endif
183 304
184#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
185# ifdef _WIN32 306# ifdef _WIN32
186# define EV_USE_POLL 0 307# define EV_USE_POLL 0
187# else 308# else
188# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 310# endif
190#endif 311#endif
191 312
192#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 316# else
196# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
197# endif 318# endif
198#endif 319#endif
199 320
… …
203 324
204#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
205# define EV_USE_PORT 0 326# define EV_USE_PORT 0
206#endif 327#endif
207 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
208#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 339# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 340# else
212# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
213# endif 342# endif
214#endif 343#endif
215 344
216#ifndef EV_PID_HASHSIZE 345#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 346# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 347#endif
223 348
224#ifndef EV_INOTIFY_HASHSIZE 349#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 350# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 351#endif
231 352
232#ifndef EV_USE_EVENTFD 353#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 354# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 355# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 356# else
236# define EV_USE_EVENTFD 0 357# define EV_USE_EVENTFD 0
358# endif
359#endif
360
361#ifndef EV_USE_SIGNALFD
362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
363# define EV_USE_SIGNALFD EV_FEATURE_OS
364# else
365# define EV_USE_SIGNALFD 0
237# endif 366# endif
238#endif 367#endif
239 368
240#if 0 /* debugging */ 369#if 0 /* debugging */
241# define EV_VERIFY 3 370# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 371# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 372# define EV_HEAP_CACHE_AT 1
244#endif 373#endif
245 374
246#ifndef EV_VERIFY 375#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 376# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 377#endif
249 378
250#ifndef EV_USE_4HEAP 379#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 380# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 381#endif
253 382
254#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
255# define EV_HEAP_CACHE_AT !EV_MINIMAL 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
385#endif
386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
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
256#endif 415#endif
257 416
258/* 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 */
259 418
260#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
… …
271# undef EV_USE_INOTIFY 430# undef EV_USE_INOTIFY
272# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
273#endif 432#endif
274 433
275#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
276# ifndef _WIN32 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux
277# include <sys/select.h> 437# include <sys/select.h>
278# endif 438# endif
279#endif 439#endif
280 440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
446# endif
447#endif
448
281#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
450# include <sys/statfs.h>
282# include <sys/inotify.h> 451# include <sys/inotify.h>
452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
453# ifndef IN_DONT_FOLLOW
454# undef EV_USE_INOTIFY
455# define EV_USE_INOTIFY 0
283#endif 456# endif
284
285#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h>
287#endif 457#endif
288 458
289#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
290/* 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 */
291# include <stdint.h> 461# include <stdint.h>
292# ifdef __cplusplus 462# ifndef EFD_NONBLOCK
293extern "C" { 463# define EFD_NONBLOCK O_NONBLOCK
294# endif 464# endif
295int eventfd (unsigned int initval, int flags); 465# ifndef EFD_CLOEXEC
296# ifdef __cplusplus 466# ifdef O_CLOEXEC
297} 467# define EFD_CLOEXEC O_CLOEXEC
468# else
469# define EFD_CLOEXEC 02000000
470# endif
298# 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};
299#endif 495#endif
300 496
301/**/ 497/**/
302 498
303#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 501#else
306# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
307#endif 503#endif
308 504
309/* 505/*
310 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
311 * It is added to ev_rt_now when scheduling periodics
312 * to ensure progress, time-wise, even when rounding
313 * errors are against us.
314 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
315 * Better solutions welcome.
316 */ 508 */
317#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 */
318 511
319#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) */
320#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) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322 514
515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
517
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */
520/*
521 * libecb - http://software.schmorp.de/pkg/libecb
522 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved.
526 *
527 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met:
529 *
530 * 1. Redistributions of source code must retain the above copyright notice,
531 * this list of conditions and the following disclaimer.
532 *
533 * 2. Redistributions in binary form must reproduce the above copyright
534 * notice, this list of conditions and the following disclaimer in the
535 * documentation and/or other materials provided with the distribution.
536 *
537 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
538 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
539 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
540 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
541 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
558 */
559
560#ifndef ECB_H
561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
565
566#ifdef _WIN32
567 typedef signed char int8_t;
568 typedef unsigned char uint8_t;
569 typedef signed short int16_t;
570 typedef unsigned short uint16_t;
571 typedef signed int int32_t;
572 typedef unsigned int uint32_t;
323#if __GNUC__ >= 4 573 #if __GNUC__
574 typedef signed long long int64_t;
575 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t;
579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
589#else
590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
608#endif
609
610/* many compilers define _GNUC_ to some versions but then only implement
611 * what their idiot authors think are the "more important" extensions,
612 * causing enormous grief in return for some better fake benchmark numbers.
613 * or so.
614 * we try to detect these and simply assume they are not gcc - if they have
615 * an issue with that they should have done it right in the first place.
616 */
617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
618 #define ECB_GCC_VERSION(major,minor) 0
619#else
620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
662#endif
663
664/*****************************************************************************/
665
666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
668
669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
689 #if __i386 || __i386__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
693 #elif ECB_GCC_AMD64
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
738 #endif
739 #endif
740#endif
741
742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
758 #define ECB_MEMORY_FENCE __sync_synchronize ()
759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
770 #elif defined _WIN32
771 #include <WinNT.h>
772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
792 #endif
793#endif
794
795#ifndef ECB_MEMORY_FENCE
796 #if !ECB_AVOID_PTHREADS
797 /*
798 * if you get undefined symbol references to pthread_mutex_lock,
799 * or failure to find pthread.h, then you should implement
800 * the ECB_MEMORY_FENCE operations for your cpu/compiler
801 * OR provide pthread.h and link against the posix thread library
802 * of your system.
803 */
804 #include <pthread.h>
805 #define ECB_NEEDS_PTHREADS 1
806 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
807
808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
810 #endif
811#endif
812
813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
815#endif
816
817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
819#endif
820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
825/*****************************************************************************/
826
827#if ECB_CPP
828 #define ecb_inline static inline
829#elif ECB_GCC_VERSION(2,5)
830 #define ecb_inline static __inline__
831#elif ECB_C99
832 #define ecb_inline static inline
833#else
834 #define ecb_inline static
835#endif
836
837#if ECB_GCC_VERSION(3,3)
838 #define ecb_restrict __restrict__
839#elif ECB_C99
840 #define ecb_restrict restrict
841#else
842 #define ecb_restrict
843#endif
844
845typedef int ecb_bool;
846
847#define ECB_CONCAT_(a, b) a ## b
848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
849#define ECB_STRINGIFY_(a) # a
850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
852
853#define ecb_function_ ecb_inline
854
855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
324# define expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
325# define noinline __attribute__ ((noinline))
326#else 873#else
327# define expect(expr,value) (expr) 874 #define ecb_expect(expr,value) (expr)
328# define noinline
329# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
330# define inline
331# endif 875#endif
332#endif
333 876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
879#else
880 #define ecb_prefetch(addr,rw,locality)
881#endif
882
883/* no emulation for ecb_decltype */
884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
889 #define ecb_decltype(x) __typeof__ (x)
890#endif
891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
909 #define ecb_noinline ecb_attribute ((__noinline__))
910#endif
911
912#define ecb_unused ecb_attribute ((__unused__))
913#define ecb_const ecb_attribute ((__const__))
914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
927
928#if ECB_GCC_VERSION(4,3)
929 #define ecb_artificial ecb_attribute ((__artificial__))
930 #define ecb_hot ecb_attribute ((__hot__))
931 #define ecb_cold ecb_attribute ((__cold__))
932#else
933 #define ecb_artificial
934 #define ecb_hot
935 #define ecb_cold
936#endif
937
938/* put around conditional expressions if you are very sure that the */
939/* expression is mostly true or mostly false. note that these return */
940/* booleans, not the expression. */
334#define expect_false(expr) expect ((expr) != 0, 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 942#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
943/* for compatibility to the rest of the world */
944#define ecb_likely(expr) ecb_expect_true (expr)
945#define ecb_unlikely(expr) ecb_expect_false (expr)
946
947/* count trailing zero bits and count # of one bits */
948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
955 #define ecb_ctz32(x) __builtin_ctz (x)
956 #define ecb_ctz64(x) __builtin_ctzll (x)
957 #define ecb_popcount32(x) __builtin_popcount (x)
958 /* no popcountll */
959#else
960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
961 ecb_function_ ecb_const int
962 ecb_ctz32 (uint32_t x)
963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
969 int r = 0;
970
971 x &= ~x + 1; /* this isolates the lowest bit */
972
973#if ECB_branchless_on_i386
974 r += !!(x & 0xaaaaaaaa) << 0;
975 r += !!(x & 0xcccccccc) << 1;
976 r += !!(x & 0xf0f0f0f0) << 2;
977 r += !!(x & 0xff00ff00) << 3;
978 r += !!(x & 0xffff0000) << 4;
979#else
980 if (x & 0xaaaaaaaa) r += 1;
981 if (x & 0xcccccccc) r += 2;
982 if (x & 0xf0f0f0f0) r += 4;
983 if (x & 0xff00ff00) r += 8;
984 if (x & 0xffff0000) r += 16;
985#endif
986
987 return r;
988#endif
989 }
990
991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
992 ecb_function_ ecb_const int
993 ecb_ctz64 (uint64_t x)
994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
1000 int shift = x & 0xffffffff ? 0 : 32;
1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1006 ecb_function_ ecb_const int
1007 ecb_popcount32 (uint32_t x)
1008 {
1009 x -= (x >> 1) & 0x55555555;
1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
1012 x *= 0x01010101;
1013
1014 return x >> 24;
1015 }
1016
1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
1025 int r = 0;
1026
1027 if (x >> 16) { x >>= 16; r += 16; }
1028 if (x >> 8) { x >>= 8; r += 8; }
1029 if (x >> 4) { x >>= 4; r += 4; }
1030 if (x >> 2) { x >>= 2; r += 2; }
1031 if (x >> 1) { r += 1; }
1032
1033 return r;
1034#endif
1035 }
1036
1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
1045 int r = 0;
1046
1047 if (x >> 32) { x >>= 32; r += 32; }
1048
1049 return r + ecb_ld32 (x);
1050#endif
1051 }
1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
1088
1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
1090/* so for this version we are lazy */
1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1092ecb_function_ ecb_const int
1093ecb_popcount64 (uint64_t x)
1094{
1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1096}
1097
1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1106
1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1115
1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1129#else
1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1131 ecb_function_ ecb_const uint16_t
1132 ecb_bswap16 (uint16_t x)
1133 {
1134 return ecb_rotl16 (x, 8);
1135 }
1136
1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1138 ecb_function_ ecb_const uint32_t
1139 ecb_bswap32 (uint32_t x)
1140 {
1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1142 }
1143
1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1145 ecb_function_ ecb_const uint64_t
1146 ecb_bswap64 (uint64_t x)
1147 {
1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1149 }
1150#endif
1151
1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1153 #define ecb_unreachable() __builtin_unreachable ()
1154#else
1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1158#endif
1159
1160/* try to tell the compiler that some condition is definitely true */
1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1162
1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1164ecb_inline ecb_const uint32_t
1165ecb_byteorder_helper (void)
1166{
1167 /* the union code still generates code under pressure in gcc, */
1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
1189}
1190
1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1195
1196#if ECB_GCC_VERSION(3,0) || ECB_C99
1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1198#else
1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1200#endif
1201
1202#if ECB_CPP
1203 template<typename T>
1204 static inline T ecb_div_rd (T val, T div)
1205 {
1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1207 }
1208 template<typename T>
1209 static inline T ecb_div_ru (T val, T div)
1210 {
1211 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1212 }
1213#else
1214 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1215 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1216#endif
1217
1218#if ecb_cplusplus_does_not_suck
1219 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1220 template<typename T, int N>
1221 static inline int ecb_array_length (const T (&arr)[N])
1222 {
1223 return N;
1224 }
1225#else
1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1227#endif
1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
1534#endif
1535
1536/* ECB.H END */
1537
1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1539/* if your architecture doesn't need memory fences, e.g. because it is
1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
1541 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1542 * libev, in which cases the memory fences become nops.
1543 * alternatively, you can remove this #error and link against libpthread,
1544 * which will then provide the memory fences.
1545 */
1546# error "memory fences not defined for your architecture, please report"
1547#endif
1548
1549#ifndef ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE do { } while (0)
1551# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1553#endif
1554
336#define inline_size static inline 1555#define inline_size ecb_inline
337 1556
338#if EV_MINIMAL 1557#if EV_FEATURE_CODE
339# define inline_speed static noinline
340#else
341# define inline_speed static inline 1558# define inline_speed ecb_inline
1559#else
1560# define inline_speed ecb_noinline static
342#endif 1561#endif
343 1562
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1563#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1564
1565#if EV_MINPRI == EV_MAXPRI
1566# define ABSPRI(w) (((W)w), 0)
1567#else
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1568# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1569#endif
346 1570
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1571#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */
349 1572
350typedef ev_watcher *W; 1573typedef ev_watcher *W;
351typedef ev_watcher_list *WL; 1574typedef ev_watcher_list *WL;
352typedef ev_watcher_time *WT; 1575typedef ev_watcher_time *WT;
353 1576
354#define ev_active(w) ((W)(w))->active 1577#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 1578#define ev_at(w) ((WT)(w))->at
356 1579
1580#if EV_USE_REALTIME
1581/* sig_atomic_t is used to avoid per-thread variables or locking but still */
1582/* giving it a reasonably high chance of working on typical architectures */
1583static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
1584#endif
1585
357#if EV_USE_MONOTONIC 1586#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1587static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
1588#endif
1589
1590#ifndef EV_FD_TO_WIN32_HANDLE
1591# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1592#endif
1593#ifndef EV_WIN32_HANDLE_TO_FD
1594# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1595#endif
1596#ifndef EV_WIN32_CLOSE_FD
1597# define EV_WIN32_CLOSE_FD(fd) close (fd)
361#endif 1598#endif
362 1599
363#ifdef _WIN32 1600#ifdef _WIN32
364# include "ev_win32.c" 1601# include "ev_win32.c"
365#endif 1602#endif
366 1603
367/*****************************************************************************/ 1604/*****************************************************************************/
368 1605
1606#if EV_USE_LINUXAIO
1607# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1608#endif
1609
1610/* define a suitable floor function (only used by periodics atm) */
1611
1612#if EV_USE_FLOOR
1613# include <math.h>
1614# define ev_floor(v) floor (v)
1615#else
1616
1617#include <float.h>
1618
1619/* a floor() replacement function, should be independent of ev_tstamp type */
1620ecb_noinline
1621static ev_tstamp
1622ev_floor (ev_tstamp v)
1623{
1624 /* the choice of shift factor is not terribly important */
1625#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1626 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1627#else
1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1629#endif
1630
1631 /* argument too large for an unsigned long? */
1632 if (ecb_expect_false (v >= shift))
1633 {
1634 ev_tstamp f;
1635
1636 if (v == v - 1.)
1637 return v; /* very large number */
1638
1639 f = shift * ev_floor (v * (1. / shift));
1640 return f + ev_floor (v - f);
1641 }
1642
1643 /* special treatment for negative args? */
1644 if (ecb_expect_false (v < 0.))
1645 {
1646 ev_tstamp f = -ev_floor (-v);
1647
1648 return f - (f == v ? 0 : 1);
1649 }
1650
1651 /* fits into an unsigned long */
1652 return (unsigned long)v;
1653}
1654
1655#endif
1656
1657/*****************************************************************************/
1658
1659#ifdef __linux
1660# include <sys/utsname.h>
1661#endif
1662
1663ecb_noinline ecb_cold
1664static unsigned int
1665ev_linux_version (void)
1666{
1667#ifdef __linux
1668 unsigned int v = 0;
1669 struct utsname buf;
1670 int i;
1671 char *p = buf.release;
1672
1673 if (uname (&buf))
1674 return 0;
1675
1676 for (i = 3+1; --i; )
1677 {
1678 unsigned int c = 0;
1679
1680 for (;;)
1681 {
1682 if (*p >= '0' && *p <= '9')
1683 c = c * 10 + *p++ - '0';
1684 else
1685 {
1686 p += *p == '.';
1687 break;
1688 }
1689 }
1690
1691 v = (v << 8) | c;
1692 }
1693
1694 return v;
1695#else
1696 return 0;
1697#endif
1698}
1699
1700/*****************************************************************************/
1701
1702#if EV_AVOID_STDIO
1703ecb_noinline ecb_cold
1704static void
1705ev_printerr (const char *msg)
1706{
1707 write (STDERR_FILENO, msg, strlen (msg));
1708}
1709#endif
1710
369static void (*syserr_cb)(const char *msg); 1711static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
370 1712
1713ecb_cold
371void 1714void
372ev_set_syserr_cb (void (*cb)(const char *msg)) 1715ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
373{ 1716{
374 syserr_cb = cb; 1717 syserr_cb = cb;
375} 1718}
376 1719
377static void noinline 1720ecb_noinline ecb_cold
1721static void
378syserr (const char *msg) 1722ev_syserr (const char *msg)
379{ 1723{
380 if (!msg) 1724 if (!msg)
381 msg = "(libev) system error"; 1725 msg = "(libev) system error";
382 1726
383 if (syserr_cb) 1727 if (syserr_cb)
384 syserr_cb (msg); 1728 syserr_cb (msg);
385 else 1729 else
386 { 1730 {
1731#if EV_AVOID_STDIO
1732 ev_printerr (msg);
1733 ev_printerr (": ");
1734 ev_printerr (strerror (errno));
1735 ev_printerr ("\n");
1736#else
387 perror (msg); 1737 perror (msg);
1738#endif
388 abort (); 1739 abort ();
389 } 1740 }
390} 1741}
391 1742
392static void * 1743static void *
393ev_realloc_emul (void *ptr, long size) 1744ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
394{ 1745{
395 /* some systems, notably openbsd and darwin, fail to properly 1746 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and 1747 * implement realloc (x, 0) (as required by both ansi c-89 and
397 * the single unix specification, so work around them here. 1748 * the single unix specification, so work around them here.
1749 * recently, also (at least) fedora and debian started breaking it,
1750 * despite documenting it otherwise.
398 */ 1751 */
399 1752
400 if (size) 1753 if (size)
401 return realloc (ptr, size); 1754 return realloc (ptr, size);
402 1755
403 free (ptr); 1756 free (ptr);
404 return 0; 1757 return 0;
405} 1758}
406 1759
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1760static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
408 1761
1762ecb_cold
409void 1763void
410ev_set_allocator (void *(*cb)(void *ptr, long size)) 1764ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
411{ 1765{
412 alloc = cb; 1766 alloc = cb;
413} 1767}
414 1768
415inline_speed void * 1769inline_speed void *
… …
417{ 1771{
418 ptr = alloc (ptr, size); 1772 ptr = alloc (ptr, size);
419 1773
420 if (!ptr && size) 1774 if (!ptr && size)
421 { 1775 {
1776#if EV_AVOID_STDIO
1777 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1778#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1779 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1780#endif
423 abort (); 1781 abort ();
424 } 1782 }
425 1783
426 return ptr; 1784 return ptr;
427} 1785}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 1787#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 1788#define ev_free(ptr) ev_realloc ((ptr), 0)
431 1789
432/*****************************************************************************/ 1790/*****************************************************************************/
433 1791
1792/* set in reify when reification needed */
1793#define EV_ANFD_REIFY 1
1794
1795/* file descriptor info structure */
434typedef struct 1796typedef struct
435{ 1797{
436 WL head; 1798 WL head;
437 unsigned char events; 1799 unsigned char events; /* the events watched for */
1800 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1801 unsigned char emask; /* some backends store the actual kernel mask in here */
438 unsigned char reify; 1802 unsigned char unused;
1803#if EV_USE_EPOLL
1804 unsigned int egen; /* generation counter to counter epoll bugs */
1805#endif
439#if EV_SELECT_IS_WINSOCKET 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
440 SOCKET handle; 1807 SOCKET handle;
441#endif 1808#endif
1809#if EV_USE_IOCP
1810 OVERLAPPED or, ow;
1811#endif
442} ANFD; 1812} ANFD;
443 1813
1814/* stores the pending event set for a given watcher */
444typedef struct 1815typedef struct
445{ 1816{
446 W w; 1817 W w;
447 int events; 1818 int events; /* the pending event set for the given watcher */
448} ANPENDING; 1819} ANPENDING;
449 1820
450#if EV_USE_INOTIFY 1821#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 1822/* hash table entry per inotify-id */
452typedef struct 1823typedef struct
… …
455} ANFS; 1826} ANFS;
456#endif 1827#endif
457 1828
458/* Heap Entry */ 1829/* Heap Entry */
459#if EV_HEAP_CACHE_AT 1830#if EV_HEAP_CACHE_AT
1831 /* a heap element */
460 typedef struct { 1832 typedef struct {
461 ev_tstamp at; 1833 ev_tstamp at;
462 WT w; 1834 WT w;
463 } ANHE; 1835 } ANHE;
464 1836
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1837 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1838 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1839 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 1840#else
1841 /* a heap element */
469 typedef WT ANHE; 1842 typedef WT ANHE;
470 1843
471 #define ANHE_w(he) (he) 1844 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 1845 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 1846 #define ANHE_at_cache(he)
… …
484 #undef VAR 1857 #undef VAR
485 }; 1858 };
486 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
487 1860
488 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
489 struct ev_loop *ev_default_loop_ptr; 1862 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
490 1863
491#else 1864#else
492 1865
493 ev_tstamp ev_rt_now; 1866 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
494 #define VAR(name,decl) static decl; 1867 #define VAR(name,decl) static decl;
495 #include "ev_vars.h" 1868 #include "ev_vars.h"
496 #undef VAR 1869 #undef VAR
497 1870
498 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
499 1872
500#endif 1873#endif
501 1874
1875#if EV_FEATURE_API
1876# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1877# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
1879#else
1880# define EV_RELEASE_CB (void)0
1881# define EV_ACQUIRE_CB (void)0
1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1883#endif
1884
1885#define EVBREAK_RECURSE 0x80
1886
502/*****************************************************************************/ 1887/*****************************************************************************/
503 1888
1889#ifndef EV_HAVE_EV_TIME
504ev_tstamp 1890ev_tstamp
505ev_time (void) 1891ev_time (void) EV_NOEXCEPT
506{ 1892{
507#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
1894 if (ecb_expect_true (have_realtime))
1895 {
508 struct timespec ts; 1896 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 1899 }
1900#endif
1901
512 struct timeval tv; 1902 struct timeval tv;
513 gettimeofday (&tv, 0); 1903 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 1904 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 1905}
1906#endif
517 1907
518ev_tstamp inline_size 1908inline_size ev_tstamp
519get_clock (void) 1909get_clock (void)
520{ 1910{
521#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
523 { 1913 {
524 struct timespec ts; 1914 struct timespec ts;
525 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
526 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
527 } 1917 }
… …
530 return ev_time (); 1920 return ev_time ();
531} 1921}
532 1922
533#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
534ev_tstamp 1924ev_tstamp
535ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
536{ 1926{
537 return ev_rt_now; 1927 return ev_rt_now;
538} 1928}
539#endif 1929#endif
540 1930
541void 1931void
542ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
543{ 1933{
544 if (delay > 0.) 1934 if (delay > 0.)
545 { 1935 {
546#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
547 struct timespec ts; 1937 struct timespec ts;
548 1938
549 ts.tv_sec = (time_t)delay; 1939 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
553#elif defined(_WIN32) 1941#elif defined _WIN32
1942 /* maybe this should round up, as ms is very low resolution */
1943 /* compared to select (µs) or nanosleep (ns) */
554 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
555#else 1945#else
556 struct timeval tv; 1946 struct timeval tv;
557 1947
558 tv.tv_sec = (time_t)delay; 1948 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 1949 /* something not guaranteed by newer posix versions, but guaranteed */
560 1950 /* by older ones */
1951 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 1952 select (0, 0, 0, 0, &tv);
562#endif 1953#endif
563 } 1954 }
564} 1955}
565 1956
566/*****************************************************************************/ 1957/*****************************************************************************/
567 1958
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1959#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 1960
570int inline_size 1961/* find a suitable new size for the given array, */
1962/* hopefully by rounding to a nice-to-malloc size */
1963inline_size int
571array_nextsize (int elem, int cur, int cnt) 1964array_nextsize (int elem, int cur, int cnt)
572{ 1965{
573 int ncur = cur + 1; 1966 int ncur = cur + 1;
574 1967
575 do 1968 do
576 ncur <<= 1; 1969 ncur <<= 1;
577 while (cnt > ncur); 1970 while (cnt > ncur);
578 1971
579 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1972 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
580 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1973 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
581 { 1974 {
582 ncur *= elem; 1975 ncur *= elem;
583 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1976 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
584 ncur = ncur - sizeof (void *) * 4; 1977 ncur = ncur - sizeof (void *) * 4;
… …
586 } 1979 }
587 1980
588 return ncur; 1981 return ncur;
589} 1982}
590 1983
591static noinline void * 1984ecb_noinline ecb_cold
1985static void *
592array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
593{ 1987{
594 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
596} 1990}
597 1991
1992#define array_needsize_noinit(base,offset,count)
1993
1994#define array_needsize_zerofill(base,offset,count) \
1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1996
598#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
600 { \ 1999 { \
601 int ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
602 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
603 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
604 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
605 } 2004 }
606 2005
607#if 0 2006#if 0
608#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
609 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 2012 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 2013 }
615#endif 2014#endif
616 2015
617#define array_free(stem, idx) \ 2016#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 2017 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 2018
620/*****************************************************************************/ 2019/*****************************************************************************/
621 2020
622void noinline 2021/* dummy callback for pending events */
2022ecb_noinline
2023static void
2024pendingcb (EV_P_ ev_prepare *w, int revents)
2025{
2026}
2027
2028ecb_noinline
2029void
623ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
624{ 2031{
625 W w_ = (W)w; 2032 W w_ = (W)w;
626 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
627 2034
628 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
629 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
630 else 2037 else
631 { 2038 {
632 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
633 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
634 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
636 } 2043 }
637}
638 2044
639void inline_speed 2045 pendingpri = NUMPRI - 1;
2046}
2047
2048inline_speed void
2049feed_reverse (EV_P_ W w)
2050{
2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
2052 rfeeds [rfeedcnt++] = w;
2053}
2054
2055inline_size void
2056feed_reverse_done (EV_P_ int revents)
2057{
2058 do
2059 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
2060 while (rfeedcnt);
2061}
2062
2063inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 2064queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 2065{
642 int i; 2066 int i;
643 2067
644 for (i = 0; i < eventcnt; ++i) 2068 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 2069 ev_feed_event (EV_A_ events [i], type);
646} 2070}
647 2071
648/*****************************************************************************/ 2072/*****************************************************************************/
649 2073
650void inline_size 2074inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 2075fd_event_nocheck (EV_P_ int fd, int revents)
665{ 2076{
666 ANFD *anfd = anfds + fd; 2077 ANFD *anfd = anfds + fd;
667 ev_io *w; 2078 ev_io *w;
668 2079
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2080 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 2084 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 2085 ev_feed_event (EV_A_ (W)w, ev);
675 } 2086 }
676} 2087}
677 2088
678void 2089/* do not submit kernel events for fds that have reify set */
2090/* because that means they changed while we were polling for new events */
2091inline_speed void
679ev_feed_fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
2093{
2094 ANFD *anfd = anfds + fd;
2095
2096 if (ecb_expect_true (!anfd->reify))
2097 fd_event_nocheck (EV_A_ fd, revents);
2098}
2099
2100void
2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
680{ 2102{
681 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
683} 2105}
684 2106
685void inline_size 2107/* make sure the external fd watch events are in-sync */
2108/* with the kernel/libev internal state */
2109inline_size void
686fd_reify (EV_P) 2110fd_reify (EV_P)
687{ 2111{
688 int i; 2112 int i;
2113
2114#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2115 for (i = 0; i < fdchangecnt; ++i)
2116 {
2117 int fd = fdchanges [i];
2118 ANFD *anfd = anfds + fd;
2119
2120 if (anfd->reify & EV__IOFDSET && anfd->head)
2121 {
2122 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2123
2124 if (handle != anfd->handle)
2125 {
2126 unsigned long arg;
2127
2128 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2129
2130 /* handle changed, but fd didn't - we need to do it in two steps */
2131 backend_modify (EV_A_ fd, anfd->events, 0);
2132 anfd->events = 0;
2133 anfd->handle = handle;
2134 }
2135 }
2136 }
2137#endif
689 2138
690 for (i = 0; i < fdchangecnt; ++i) 2139 for (i = 0; i < fdchangecnt; ++i)
691 { 2140 {
692 int fd = fdchanges [i]; 2141 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 2142 ANFD *anfd = anfds + fd;
694 ev_io *w; 2143 ev_io *w;
695 2144
696 unsigned char events = 0; 2145 unsigned char o_events = anfd->events;
2146 unsigned char o_reify = anfd->reify;
697 2147
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2148 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 2149
701#if EV_SELECT_IS_WINSOCKET 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
702 if (events)
703 { 2151 {
704 unsigned long argp; 2152 anfd->events = 0;
705 #ifdef EV_FD_TO_WIN32_HANDLE 2153
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
707 #else 2155 anfd->events |= (unsigned char)w->events;
708 anfd->handle = _get_osfhandle (fd); 2156
709 #endif 2157 if (o_events != anfd->events)
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 2158 o_reify = EV__IOFDSET; /* actually |= */
711 } 2159 }
712#endif
713 2160
714 { 2161 if (o_reify & EV__IOFDSET)
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
718 anfd->reify = 0;
719 anfd->events = events;
720
721 if (o_events != events || o_reify & EV_IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 2162 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 2163 }
725 2164
726 fdchangecnt = 0; 2165 fdchangecnt = 0;
727} 2166}
728 2167
2168/* something about the given fd changed */
729void inline_size 2169inline_size
2170void
730fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
731{ 2172{
732 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
734 2175
735 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
736 { 2177 {
737 ++fdchangecnt; 2178 ++fdchangecnt;
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
739 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
740 } 2181 }
741} 2182}
742 2183
743void inline_speed 2184/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
2185inline_speed ecb_cold void
744fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
745{ 2187{
746 ev_io *w; 2188 ev_io *w;
747 2189
748 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 2192 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2193 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 2194 }
753} 2195}
754 2196
755int inline_size 2197/* check whether the given fd is actually valid, for error recovery */
2198inline_size ecb_cold int
756fd_valid (int fd) 2199fd_valid (int fd)
757{ 2200{
758#ifdef _WIN32 2201#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 2203#else
761 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
762#endif 2205#endif
763} 2206}
764 2207
765/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
766static void noinline 2209ecb_noinline ecb_cold
2210static void
767fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
768{ 2212{
769 int fd; 2213 int fd;
770 2214
771 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 2216 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
775} 2219}
776 2220
777/* called on ENOMEM in select/poll to kill some fds and retry */ 2221/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 2222ecb_noinline ecb_cold
2223static void
779fd_enomem (EV_P) 2224fd_enomem (EV_P)
780{ 2225{
781 int fd; 2226 int fd;
782 2227
783 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 2229 if (anfds [fd].events)
785 { 2230 {
786 fd_kill (EV_A_ fd); 2231 fd_kill (EV_A_ fd);
787 return; 2232 break;
788 } 2233 }
789} 2234}
790 2235
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 2236/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 2237ecb_noinline
2238static void
793fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
794{ 2240{
795 int fd; 2241 int fd;
796 2242
797 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 2244 if (anfds [fd].events)
799 { 2245 {
800 anfds [fd].events = 0; 2246 anfds [fd].events = 0;
2247 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 2248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 2249 }
803} 2250}
804 2251
2252/* used to prepare libev internal fd's */
2253/* this is not fork-safe */
2254inline_speed void
2255fd_intern (int fd)
2256{
2257#ifdef _WIN32
2258 unsigned long arg = 1;
2259 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2260#else
2261 fcntl (fd, F_SETFD, FD_CLOEXEC);
2262 fcntl (fd, F_SETFL, O_NONBLOCK);
2263#endif
2264}
2265
805/*****************************************************************************/ 2266/*****************************************************************************/
806 2267
807/* 2268/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not 2269 * the heap functions want a real array index. array index 0 is guaranteed to not
809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2270 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree. 2271 * the branching factor of the d-tree.
811 */ 2272 */
812 2273
813/* 2274/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 2283#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 2284#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 2285#define UPHEAP_DONE(p,k) ((p) == (k))
825 2286
826/* away from the root */ 2287/* away from the root */
827void inline_speed 2288inline_speed void
828downheap (ANHE *heap, int N, int k) 2289downheap (ANHE *heap, int N, int k)
829{ 2290{
830 ANHE he = heap [k]; 2291 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 2292 ANHE *E = heap + N + HEAP0;
832 2293
… …
835 ev_tstamp minat; 2296 ev_tstamp minat;
836 ANHE *minpos; 2297 ANHE *minpos;
837 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
838 2299
839 /* find minimum child */ 2300 /* find minimum child */
840 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
841 { 2302 {
842 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
843 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2304 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
844 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2305 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
845 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2306 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
872#define HEAP0 1 2333#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 2334#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 2335#define UPHEAP_DONE(p,k) (!(p))
875 2336
876/* away from the root */ 2337/* away from the root */
877void inline_speed 2338inline_speed void
878downheap (ANHE *heap, int N, int k) 2339downheap (ANHE *heap, int N, int k)
879{ 2340{
880 ANHE he = heap [k]; 2341 ANHE he = heap [k];
881 2342
882 for (;;) 2343 for (;;)
883 { 2344 {
884 int c = k << 1; 2345 int c = k << 1;
885 2346
886 if (c > N + HEAP0 - 1) 2347 if (c >= N + HEAP0)
887 break; 2348 break;
888 2349
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2350 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 2351 ? 1 : 0;
891 2352
… …
902 ev_active (ANHE_w (he)) = k; 2363 ev_active (ANHE_w (he)) = k;
903} 2364}
904#endif 2365#endif
905 2366
906/* towards the root */ 2367/* towards the root */
907void inline_speed 2368inline_speed void
908upheap (ANHE *heap, int k) 2369upheap (ANHE *heap, int k)
909{ 2370{
910 ANHE he = heap [k]; 2371 ANHE he = heap [k];
911 2372
912 for (;;) 2373 for (;;)
… …
923 2384
924 heap [k] = he; 2385 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 2386 ev_active (ANHE_w (he)) = k;
926} 2387}
927 2388
928void inline_size 2389/* move an element suitably so it is in a correct place */
2390inline_size void
929adjustheap (ANHE *heap, int N, int k) 2391adjustheap (ANHE *heap, int N, int k)
930{ 2392{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2393 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 2394 upheap (heap, k);
933 else 2395 else
934 downheap (heap, N, k); 2396 downheap (heap, N, k);
935} 2397}
936 2398
937/* rebuild the heap: this function is used only once and executed rarely */ 2399/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 2400inline_size void
939reheap (ANHE *heap, int N) 2401reheap (ANHE *heap, int N)
940{ 2402{
941 int i; 2403 int i;
2404
942 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 2405 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
943 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 2406 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944 for (i = 0; i < N; ++i) 2407 for (i = 0; i < N; ++i)
945 upheap (heap, i + HEAP0); 2408 upheap (heap, i + HEAP0);
946} 2409}
947 2410
948#if EV_VERIFY 2411/*****************************************************************************/
2412
2413/* associate signal watchers to a signal signal */
2414typedef struct
2415{
2416 EV_ATOMIC_T pending;
2417#if EV_MULTIPLICITY
2418 EV_P;
2419#endif
2420 WL head;
2421} ANSIG;
2422
2423static ANSIG signals [EV_NSIG - 1];
2424
2425/*****************************************************************************/
2426
2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2428
2429ecb_noinline ecb_cold
949static void 2430static void
950checkheap (ANHE *heap, int N)
951{
952 int i;
953
954 for (i = HEAP0; i < N + HEAP0; ++i)
955 {
956 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
957 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
958 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
959 }
960}
961#endif
962
963/*****************************************************************************/
964
965typedef struct
966{
967 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG;
970
971static ANSIG *signals;
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975
976void inline_size
977signals_init (ANSIG *base, int count)
978{
979 while (count--)
980 {
981 base->head = 0;
982 base->gotsig = 0;
983
984 ++base;
985 }
986}
987
988/*****************************************************************************/
989
990void inline_speed
991fd_intern (int fd)
992{
993#ifdef _WIN32
994 int arg = 1;
995 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
996#else
997 fcntl (fd, F_SETFD, FD_CLOEXEC);
998 fcntl (fd, F_SETFL, O_NONBLOCK);
999#endif
1000}
1001
1002static void noinline
1003evpipe_init (EV_P) 2431evpipe_init (EV_P)
1004{ 2432{
1005 if (!ev_is_active (&pipeev)) 2433 if (!ev_is_active (&pipe_w))
2434 {
2435 int fds [2];
2436
2437# if EV_USE_EVENTFD
2438 fds [0] = -1;
2439 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2440 if (fds [1] < 0 && errno == EINVAL)
2441 fds [1] = eventfd (0, 0);
2442
2443 if (fds [1] < 0)
2444# endif
2445 {
2446 while (pipe (fds))
2447 ev_syserr ("(libev) error creating signal/async pipe");
2448
2449 fd_intern (fds [0]);
2450 }
2451
2452 evpipe [0] = fds [0];
2453
2454 if (evpipe [1] < 0)
2455 evpipe [1] = fds [1]; /* first call, set write fd */
2456 else
2457 {
2458 /* on subsequent calls, do not change evpipe [1] */
2459 /* so that evpipe_write can always rely on its value. */
2460 /* this branch does not do anything sensible on windows, */
2461 /* so must not be executed on windows */
2462
2463 dup2 (fds [1], evpipe [1]);
2464 close (fds [1]);
2465 }
2466
2467 fd_intern (evpipe [1]);
2468
2469 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2470 ev_io_start (EV_A_ &pipe_w);
2471 ev_unref (EV_A); /* watcher should not keep loop alive */
1006 { 2472 }
2473}
2474
2475inline_speed void
2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2477{
2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2479
2480 if (ecb_expect_true (*flag))
2481 return;
2482
2483 *flag = 1;
2484 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2485
2486 pipe_write_skipped = 1;
2487
2488 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2489
2490 if (pipe_write_wanted)
2491 {
2492 int old_errno;
2493
2494 pipe_write_skipped = 0;
2495 ECB_MEMORY_FENCE_RELEASE;
2496
2497 old_errno = errno; /* save errno because write will clobber it */
2498
1007#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1008 if ((evfd = eventfd (0, 0)) >= 0) 2500 if (evpipe [0] < 0)
1009 { 2501 {
1010 evpipe [0] = -1; 2502 uint64_t counter = 1;
1011 fd_intern (evfd); 2503 write (evpipe [1], &counter, sizeof (uint64_t));
1012 ev_io_set (&pipeev, evfd, EV_READ);
1013 } 2504 }
1014 else 2505 else
1015#endif 2506#endif
1016 { 2507 {
1017 while (pipe (evpipe)) 2508#ifdef _WIN32
1018 syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1019 2510 DWORD sent;
1020 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1021 fd_intern (evpipe [1]); 2512 buf.len = 1;
1022 ev_io_set (&pipeev, evpipe [0], EV_READ); 2513 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2514#else
2515 write (evpipe [1], &(evpipe [1]), 1);
2516#endif
1023 } 2517 }
1024 2518
1025 ev_io_start (EV_A_ &pipeev); 2519 errno = old_errno;
1026 ev_unref (EV_A); /* watcher should not keep loop alive */
1027 }
1028}
1029
1030void inline_size
1031evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{
1033 if (!*flag)
1034 { 2520 }
1035 int old_errno = errno; /* save errno because write might clobber it */ 2521}
1036 2522
1037 *flag = 1; 2523/* called whenever the libev signal pipe */
2524/* got some events (signal, async) */
2525static void
2526pipecb (EV_P_ ev_io *iow, int revents)
2527{
2528 int i;
1038 2529
2530 if (revents & EV_READ)
2531 {
1039#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1040 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1041 { 2534 {
1042 uint64_t counter = 1; 2535 uint64_t counter;
1043 write (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1044 } 2537 }
1045 else 2538 else
1046#endif 2539#endif
1047 write (evpipe [1], &old_errno, 1); 2540 {
1048
1049 errno = old_errno;
1050 }
1051}
1052
1053static void
1054pipecb (EV_P_ ev_io *iow, int revents)
1055{
1056#if EV_USE_EVENTFD
1057 if (evfd >= 0)
1058 {
1059 uint64_t counter;
1060 read (evfd, &counter, sizeof (uint64_t));
1061 }
1062 else
1063#endif
1064 {
1065 char dummy; 2541 char dummy[4];
2542#ifdef _WIN32
2543 WSABUF buf;
2544 DWORD recvd;
2545 DWORD flags = 0;
2546 buf.buf = dummy;
2547 buf.len = sizeof (dummy);
2548 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2549#else
1066 read (evpipe [0], &dummy, 1); 2550 read (evpipe [0], &dummy, sizeof (dummy));
2551#endif
2552 }
2553 }
2554
2555 pipe_write_skipped = 0;
2556
2557 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2558
2559#if EV_SIGNAL_ENABLE
2560 if (sig_pending)
1067 } 2561 {
2562 sig_pending = 0;
1068 2563
1069 if (gotsig && ev_is_default_loop (EV_A)) 2564 ECB_MEMORY_FENCE;
1070 {
1071 int signum;
1072 gotsig = 0;
1073 2565
1074 for (signum = signalmax; signum--; ) 2566 for (i = EV_NSIG - 1; i--; )
1075 if (signals [signum].gotsig) 2567 if (ecb_expect_false (signals [i].pending))
1076 ev_feed_signal_event (EV_A_ signum + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1077 } 2569 }
2570#endif
1078 2571
1079#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1080 if (gotasync) 2573 if (async_pending)
1081 { 2574 {
1082 int i; 2575 async_pending = 0;
1083 gotasync = 0; 2576
2577 ECB_MEMORY_FENCE;
1084 2578
1085 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1086 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1087 { 2581 {
1088 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1089 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1090 } 2585 }
1091 } 2586 }
1092#endif 2587#endif
1093} 2588}
1094 2589
1095/*****************************************************************************/ 2590/*****************************************************************************/
1096 2591
2592void
2593ev_feed_signal (int signum) EV_NOEXCEPT
2594{
2595#if EV_MULTIPLICITY
2596 EV_P;
2597 ECB_MEMORY_FENCE_ACQUIRE;
2598 EV_A = signals [signum - 1].loop;
2599
2600 if (!EV_A)
2601 return;
2602#endif
2603
2604 signals [signum - 1].pending = 1;
2605 evpipe_write (EV_A_ &sig_pending);
2606}
2607
1097static void 2608static void
1098ev_sighandler (int signum) 2609ev_sighandler (int signum)
1099{ 2610{
2611#ifdef _WIN32
2612 signal (signum, ev_sighandler);
2613#endif
2614
2615 ev_feed_signal (signum);
2616}
2617
2618ecb_noinline
2619void
2620ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2621{
2622 WL w;
2623
2624 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2625 return;
2626
2627 --signum;
2628
1100#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1101 struct ev_loop *loop = &default_loop_struct; 2630 /* it is permissible to try to feed a signal to the wrong loop */
1102#endif 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1103 2632
1104#if _WIN32 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1105 signal (signum, ev_sighandler);
1106#endif
1107
1108 signals [signum - 1].gotsig = 1;
1109 evpipe_write (EV_A_ &gotsig);
1110}
1111
1112void noinline
1113ev_feed_signal_event (EV_P_ int signum)
1114{
1115 WL w;
1116
1117#if EV_MULTIPLICITY
1118 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1119#endif
1120
1121 --signum;
1122
1123 if (signum < 0 || signum >= signalmax)
1124 return; 2634 return;
2635#endif
1125 2636
1126 signals [signum].gotsig = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1127 2639
1128 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1129 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1130} 2642}
1131 2643
2644#if EV_USE_SIGNALFD
2645static void
2646sigfdcb (EV_P_ ev_io *iow, int revents)
2647{
2648 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2649
2650 for (;;)
2651 {
2652 ssize_t res = read (sigfd, si, sizeof (si));
2653
2654 /* not ISO-C, as res might be -1, but works with SuS */
2655 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2656 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2657
2658 if (res < (ssize_t)sizeof (si))
2659 break;
2660 }
2661}
2662#endif
2663
2664#endif
2665
1132/*****************************************************************************/ 2666/*****************************************************************************/
1133 2667
2668#if EV_CHILD_ENABLE
1134static WL childs [EV_PID_HASHSIZE]; 2669static WL childs [EV_PID_HASHSIZE];
1135
1136#ifndef _WIN32
1137 2670
1138static ev_signal childev; 2671static ev_signal childev;
1139 2672
1140#ifndef WIFCONTINUED 2673#ifndef WIFCONTINUED
1141# define WIFCONTINUED(status) 0 2674# define WIFCONTINUED(status) 0
1142#endif 2675#endif
1143 2676
1144void inline_speed 2677/* handle a single child status event */
2678inline_speed void
1145child_reap (EV_P_ int chain, int pid, int status) 2679child_reap (EV_P_ int chain, int pid, int status)
1146{ 2680{
1147 ev_child *w; 2681 ev_child *w;
1148 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2682 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149 2683
1150 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2684 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1151 { 2685 {
1152 if ((w->pid == pid || !w->pid) 2686 if ((w->pid == pid || !w->pid)
1153 && (!traced || (w->flags & 1))) 2687 && (!traced || (w->flags & 1)))
1154 { 2688 {
1155 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2689 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1162 2696
1163#ifndef WCONTINUED 2697#ifndef WCONTINUED
1164# define WCONTINUED 0 2698# define WCONTINUED 0
1165#endif 2699#endif
1166 2700
2701/* called on sigchld etc., calls waitpid */
1167static void 2702static void
1168childcb (EV_P_ ev_signal *sw, int revents) 2703childcb (EV_P_ ev_signal *sw, int revents)
1169{ 2704{
1170 int pid, status; 2705 int pid, status;
1171 2706
… …
1179 /* make sure we are called again until all children have been reaped */ 2714 /* make sure we are called again until all children have been reaped */
1180 /* we need to do it this way so that the callback gets called before we continue */ 2715 /* we need to do it this way so that the callback gets called before we continue */
1181 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2716 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1182 2717
1183 child_reap (EV_A_ pid, pid, status); 2718 child_reap (EV_A_ pid, pid, status);
1184 if (EV_PID_HASHSIZE > 1) 2719 if ((EV_PID_HASHSIZE) > 1)
1185 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2720 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1186} 2721}
1187 2722
1188#endif 2723#endif
1189 2724
1190/*****************************************************************************/ 2725/*****************************************************************************/
1191 2726
2727#if EV_USE_IOCP
2728# include "ev_iocp.c"
2729#endif
1192#if EV_USE_PORT 2730#if EV_USE_PORT
1193# include "ev_port.c" 2731# include "ev_port.c"
1194#endif 2732#endif
1195#if EV_USE_KQUEUE 2733#if EV_USE_KQUEUE
1196# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
1197#endif 2735#endif
1198#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
1199# include "ev_epoll.c" 2737# include "ev_epoll.c"
1200#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
1201#if EV_USE_POLL 2742#if EV_USE_POLL
1202# include "ev_poll.c" 2743# include "ev_poll.c"
1203#endif 2744#endif
1204#if EV_USE_SELECT 2745#if EV_USE_SELECT
1205# include "ev_select.c" 2746# include "ev_select.c"
1206#endif 2747#endif
1207 2748
1208int 2749ecb_cold int
1209ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
1210{ 2751{
1211 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
1212} 2753}
1213 2754
1214int 2755ecb_cold int
1215ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
1216{ 2757{
1217 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
1218} 2759}
1219 2760
1220/* return true if we are running with elevated privileges and should ignore env variables */ 2761/* return true if we are running with elevated privileges and should ignore env variables */
1221int inline_size 2762inline_size ecb_cold int
1222enable_secure (void) 2763enable_secure (void)
1223{ 2764{
1224#ifdef _WIN32 2765#ifdef _WIN32
1225 return 0; 2766 return 0;
1226#else 2767#else
1227 return getuid () != geteuid () 2768 return getuid () != geteuid ()
1228 || getgid () != getegid (); 2769 || getgid () != getegid ();
1229#endif 2770#endif
1230} 2771}
1231 2772
2773ecb_cold
1232unsigned int 2774unsigned int
1233ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
1234{ 2776{
1235 unsigned int flags = 0; 2777 unsigned int flags = 0;
1236 2778
1237 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1238 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1239 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1240 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1241 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1242 2785
1243 return flags; 2786 return flags;
1244} 2787}
1245 2788
2789ecb_cold
1246unsigned int 2790unsigned int
1247ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
1248{ 2792{
1249 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
1250 2794
1251#ifndef __NetBSD__ 2795#ifndef __NetBSD__
1252 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
1253 /* it usually doesn't work correctly on anything but sockets and pipes */ 2797 /* it usually doesn't work correctly on anything but sockets and pipes */
1254 flags &= ~EVBACKEND_KQUEUE; 2798 flags &= ~EVBACKEND_KQUEUE;
1255#endif 2799#endif
1256#ifdef __APPLE__ 2800#ifdef __APPLE__
1257 // flags &= ~EVBACKEND_KQUEUE; for documentation 2801 /* only select works correctly on that "unix-certified" platform */
2802 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2803 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2804#endif
2805#ifdef __FreeBSD__
2806 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2807#endif
2808
2809 /* TODO: linuxaio is very experimental */
2810#if !EV_RECOMMEND_LINUXAIO
1258 flags &= ~EVBACKEND_POLL; 2811 flags &= ~EVBACKEND_LINUXAIO;
1259#endif 2812#endif
1260 2813
1261 return flags; 2814 return flags;
1262} 2815}
1263 2816
2817ecb_cold
1264unsigned int 2818unsigned int
1265ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1266{ 2820{
1267 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1268 2822
1269 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1270 /* please fix it and tell me how to detect the fix */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1271 flags &= ~EVBACKEND_EPOLL; 2825 flags &= ~EVBACKEND_EPOLL;
1272 2826
1273 return flags; 2827 return flags;
1274} 2828}
1275 2829
1276unsigned int 2830unsigned int
1277ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1278{ 2832{
1279 return backend; 2833 return backend;
1280} 2834}
1281 2835
2836#if EV_FEATURE_API
1282unsigned int 2837unsigned int
1283ev_loop_count (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1284{ 2839{
1285 return loop_count; 2840 return loop_count;
1286} 2841}
1287 2842
2843unsigned int
2844ev_depth (EV_P) EV_NOEXCEPT
2845{
2846 return loop_depth;
2847}
2848
1288void 2849void
1289ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1290{ 2851{
1291 io_blocktime = interval; 2852 io_blocktime = interval;
1292} 2853}
1293 2854
1294void 2855void
1295ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1296{ 2857{
1297 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1298} 2859}
1299 2860
1300static void noinline 2861void
2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2863{
2864 userdata = data;
2865}
2866
2867void *
2868ev_userdata (EV_P) EV_NOEXCEPT
2869{
2870 return userdata;
2871}
2872
2873void
2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2875{
2876 invoke_cb = invoke_pending_cb;
2877}
2878
2879void
2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2881{
2882 release_cb = release;
2883 acquire_cb = acquire;
2884}
2885#endif
2886
2887/* initialise a loop structure, must be zero-initialised */
2888ecb_noinline ecb_cold
2889static void
1301loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1302{ 2891{
1303 if (!backend) 2892 if (!backend)
1304 { 2893 {
2894 origflags = flags;
2895
2896#if EV_USE_REALTIME
2897 if (!have_realtime)
2898 {
2899 struct timespec ts;
2900
2901 if (!clock_gettime (CLOCK_REALTIME, &ts))
2902 have_realtime = 1;
2903 }
2904#endif
2905
1305#if EV_USE_MONOTONIC 2906#if EV_USE_MONOTONIC
2907 if (!have_monotonic)
1306 { 2908 {
1307 struct timespec ts; 2909 struct timespec ts;
2910
1308 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2911 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309 have_monotonic = 1; 2912 have_monotonic = 1;
1310 } 2913 }
1311#endif
1312
1313 ev_rt_now = ev_time ();
1314 mn_now = get_clock ();
1315 now_floor = mn_now;
1316 rtmn_diff = ev_rt_now - mn_now;
1317
1318 io_blocktime = 0.;
1319 timeout_blocktime = 0.;
1320 backend = 0;
1321 backend_fd = -1;
1322 gotasync = 0;
1323#if EV_USE_INOTIFY
1324 fs_fd = -2;
1325#endif 2914#endif
1326 2915
1327 /* pid check not overridable via env */ 2916 /* pid check not overridable via env */
1328#ifndef _WIN32 2917#ifndef _WIN32
1329 if (flags & EVFLAG_FORKCHECK) 2918 if (flags & EVFLAG_FORKCHECK)
… …
1333 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1334 && !enable_secure () 2923 && !enable_secure ()
1335 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1336 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1337 2926
1338 if (!(flags & 0x0000ffffU)) 2927 ev_rt_now = ev_time ();
2928 mn_now = get_clock ();
2929 now_floor = mn_now;
2930 rtmn_diff = ev_rt_now - mn_now;
2931#if EV_FEATURE_API
2932 invoke_cb = ev_invoke_pending;
2933#endif
2934
2935 io_blocktime = 0.;
2936 timeout_blocktime = 0.;
2937 backend = 0;
2938 backend_fd = -1;
2939 sig_pending = 0;
2940#if EV_ASYNC_ENABLE
2941 async_pending = 0;
2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
2947#if EV_USE_INOTIFY
2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2949#endif
2950#if EV_USE_SIGNALFD
2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2952#endif
2953
2954 if (!(flags & EVBACKEND_MASK))
1339 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1340 2956
2957#if EV_USE_IOCP
2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2959#endif
1341#if EV_USE_PORT 2960#if EV_USE_PORT
1342 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1343#endif 2962#endif
1344#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1345 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1346#endif 2968#endif
1347#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1348 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1349#endif 2971#endif
1350#if EV_USE_POLL 2972#if EV_USE_POLL
1351 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1352#endif 2974#endif
1353#if EV_USE_SELECT 2975#if EV_USE_SELECT
1354 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1355#endif 2977#endif
1356 2978
2979 ev_prepare_init (&pending_w, pendingcb);
2980
2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1357 ev_init (&pipeev, pipecb); 2982 ev_init (&pipe_w, pipecb);
1358 ev_set_priority (&pipeev, EV_MAXPRI); 2983 ev_set_priority (&pipe_w, EV_MAXPRI);
2984#endif
1359 } 2985 }
1360} 2986}
1361 2987
1362static void noinline 2988/* free up a loop structure */
2989ecb_cold
2990void
1363loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1364{ 2992{
1365 int i; 2993 int i;
1366 2994
2995#if EV_MULTIPLICITY
2996 /* mimic free (0) */
2997 if (!EV_A)
2998 return;
2999#endif
3000
3001#if EV_CLEANUP_ENABLE
3002 /* queue cleanup watchers (and execute them) */
3003 if (ecb_expect_false (cleanupcnt))
3004 {
3005 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3006 EV_INVOKE_PENDING;
3007 }
3008#endif
3009
3010#if EV_CHILD_ENABLE
3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3012 {
3013 ev_ref (EV_A); /* child watcher */
3014 ev_signal_stop (EV_A_ &childev);
3015 }
3016#endif
3017
1367 if (ev_is_active (&pipeev)) 3018 if (ev_is_active (&pipe_w))
1368 { 3019 {
1369 ev_ref (EV_A); /* signal watcher */ 3020 /*ev_ref (EV_A);*/
1370 ev_io_stop (EV_A_ &pipeev); 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1371 3022
3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3025 }
3026
1372#if EV_USE_EVENTFD 3027#if EV_USE_SIGNALFD
1373 if (evfd >= 0) 3028 if (ev_is_active (&sigfd_w))
1374 close (evfd); 3029 close (sigfd);
1375#endif 3030#endif
1376
1377 if (evpipe [0] >= 0)
1378 {
1379 close (evpipe [0]);
1380 close (evpipe [1]);
1381 }
1382 }
1383 3031
1384#if EV_USE_INOTIFY 3032#if EV_USE_INOTIFY
1385 if (fs_fd >= 0) 3033 if (fs_fd >= 0)
1386 close (fs_fd); 3034 close (fs_fd);
1387#endif 3035#endif
1388 3036
1389 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1390 close (backend_fd); 3038 close (backend_fd);
1391 3039
3040#if EV_USE_IOCP
3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3042#endif
1392#if EV_USE_PORT 3043#if EV_USE_PORT
1393 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1394#endif 3045#endif
1395#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1396 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1397#endif 3051#endif
1398#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1399 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1400#endif 3054#endif
1401#if EV_USE_POLL 3055#if EV_USE_POLL
1402 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1403#endif 3057#endif
1404#if EV_USE_SELECT 3058#if EV_USE_SELECT
1405 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1406#endif 3060#endif
1407 3061
1408 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1409 { 3063 {
1410 array_free (pending, [i]); 3064 array_free (pending, [i]);
1411#if EV_IDLE_ENABLE 3065#if EV_IDLE_ENABLE
1412 array_free (idle, [i]); 3066 array_free (idle, [i]);
1413#endif 3067#endif
1414 } 3068 }
1415 3069
1416 ev_free (anfds); anfdmax = 0; 3070 ev_free (anfds); anfds = 0; anfdmax = 0;
1417 3071
1418 /* have to use the microsoft-never-gets-it-right macro */ 3072 /* have to use the microsoft-never-gets-it-right macro */
3073 array_free (rfeed, EMPTY);
1419 array_free (fdchange, EMPTY); 3074 array_free (fdchange, EMPTY);
1420 array_free (timer, EMPTY); 3075 array_free (timer, EMPTY);
1421#if EV_PERIODIC_ENABLE 3076#if EV_PERIODIC_ENABLE
1422 array_free (periodic, EMPTY); 3077 array_free (periodic, EMPTY);
1423#endif 3078#endif
1424#if EV_FORK_ENABLE 3079#if EV_FORK_ENABLE
1425 array_free (fork, EMPTY); 3080 array_free (fork, EMPTY);
1426#endif 3081#endif
3082#if EV_CLEANUP_ENABLE
3083 array_free (cleanup, EMPTY);
3084#endif
1427 array_free (prepare, EMPTY); 3085 array_free (prepare, EMPTY);
1428 array_free (check, EMPTY); 3086 array_free (check, EMPTY);
1429#if EV_ASYNC_ENABLE 3087#if EV_ASYNC_ENABLE
1430 array_free (async, EMPTY); 3088 array_free (async, EMPTY);
1431#endif 3089#endif
1432 3090
1433 backend = 0; 3091 backend = 0;
3092
3093#if EV_MULTIPLICITY
3094 if (ev_is_default_loop (EV_A))
3095#endif
3096 ev_default_loop_ptr = 0;
3097#if EV_MULTIPLICITY
3098 else
3099 ev_free (EV_A);
3100#endif
1434} 3101}
1435 3102
1436#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
1437void inline_size infy_fork (EV_P); 3104inline_size void infy_fork (EV_P);
1438#endif 3105#endif
1439 3106
1440void inline_size 3107inline_size void
1441loop_fork (EV_P) 3108loop_fork (EV_P)
1442{ 3109{
1443#if EV_USE_PORT 3110#if EV_USE_PORT
1444 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445#endif 3112#endif
1446#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1447 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1448#endif 3118#endif
1449#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1450 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1451#endif 3121#endif
1452#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1453 infy_fork (EV_A); 3123 infy_fork (EV_A);
1454#endif 3124#endif
1455 3125
1456 if (ev_is_active (&pipeev)) 3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3127 if (ev_is_active (&pipe_w) && postfork != 2)
1457 { 3128 {
1458 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1459 /* while we modify the fd vars */
1460 gotsig = 1;
1461#if EV_ASYNC_ENABLE
1462 gotasync = 1;
1463#endif
1464 3130
1465 ev_ref (EV_A); 3131 ev_ref (EV_A);
1466 ev_io_stop (EV_A_ &pipeev); 3132 ev_io_stop (EV_A_ &pipe_w);
1467
1468#if EV_USE_EVENTFD
1469 if (evfd >= 0)
1470 close (evfd);
1471#endif
1472 3133
1473 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1474 { 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1475 close (evpipe [0]);
1476 close (evpipe [1]);
1477 }
1478 3136
1479 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1480 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1481 pipecb (EV_A_ &pipeev, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1482 } 3140 }
3141#endif
1483 3142
1484 postfork = 0; 3143 postfork = 0;
1485} 3144}
1486 3145
1487#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1488 3147
3148ecb_cold
1489struct ev_loop * 3149struct ev_loop *
1490ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1491{ 3151{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 3153
1494 memset (loop, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
1497 3156
1498 if (ev_backend (EV_A)) 3157 if (ev_backend (EV_A))
1499 return loop; 3158 return EV_A;
1500 3159
3160 ev_free (EV_A);
1501 return 0; 3161 return 0;
1502} 3162}
1503 3163
1504void 3164#endif /* multiplicity */
1505ev_loop_destroy (EV_P)
1506{
1507 loop_destroy (EV_A);
1508 ev_free (loop);
1509}
1510
1511void
1512ev_loop_fork (EV_P)
1513{
1514 postfork = 1; /* must be in line with ev_default_fork */
1515}
1516 3165
1517#if EV_VERIFY 3166#if EV_VERIFY
3167ecb_noinline ecb_cold
1518static void 3168static void
3169verify_watcher (EV_P_ W w)
3170{
3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
3172
3173 if (w->pending)
3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
3175}
3176
3177ecb_noinline ecb_cold
3178static void
3179verify_heap (EV_P_ ANHE *heap, int N)
3180{
3181 int i;
3182
3183 for (i = HEAP0; i < N + HEAP0; ++i)
3184 {
3185 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
3186 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
3187 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
3188
3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
3190 }
3191}
3192
3193ecb_noinline ecb_cold
3194static void
1519array_check (W **ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1520{ 3196{
1521 while (cnt--) 3197 while (cnt--)
3198 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
3200 verify_watcher (EV_A_ ws [cnt]);
3201 }
1523} 3202}
1524#endif 3203#endif
1525 3204
1526void 3205#if EV_FEATURE_API
1527ev_loop_verify (EV_P) 3206void ecb_cold
3207ev_verify (EV_P) EV_NOEXCEPT
1528{ 3208{
1529#if EV_VERIFY 3209#if EV_VERIFY
1530 int i; 3210 int i;
3211 WL w, w2;
1531 3212
3213 assert (activecnt >= -1);
3214
3215 assert (fdchangemax >= fdchangecnt);
3216 for (i = 0; i < fdchangecnt; ++i)
3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
3218
3219 assert (anfdmax >= 0);
3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
3224 for (w = w2 = anfds [i].head; w; w = w->next)
3225 {
3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
3236 }
3237 }
3238
3239 assert (timermax >= timercnt);
1532 checkheap (timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
3241
1533#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
3243 assert (periodicmax >= periodiccnt);
1534 checkheap (periodics, periodiccnt); 3244 verify_heap (EV_A_ periodics, periodiccnt);
1535#endif 3245#endif
1536 3246
3247 for (i = NUMPRI; i--; )
3248 {
3249 assert (pendingmax [i] >= pendingcnt [i]);
1537#if EV_IDLE_ENABLE 3250#if EV_IDLE_ENABLE
1538 for (i = NUMPRI; i--; ) 3251 assert (idleall >= 0);
3252 assert (idlemax [i] >= idlecnt [i]);
1539 array_check ((W **)idles [i], idlecnt [i]); 3253 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540#endif 3254#endif
3255 }
3256
1541#if EV_FORK_ENABLE 3257#if EV_FORK_ENABLE
3258 assert (forkmax >= forkcnt);
1542 array_check ((W **)forks, forkcnt); 3259 array_verify (EV_A_ (W *)forks, forkcnt);
1543#endif 3260#endif
3261
3262#if EV_CLEANUP_ENABLE
3263 assert (cleanupmax >= cleanupcnt);
3264 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3265#endif
3266
1544#if EV_ASYNC_ENABLE 3267#if EV_ASYNC_ENABLE
3268 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 3269 array_verify (EV_A_ (W *)asyncs, asynccnt);
3270#endif
3271
3272#if EV_PREPARE_ENABLE
3273 assert (preparemax >= preparecnt);
3274 array_verify (EV_A_ (W *)prepares, preparecnt);
3275#endif
3276
3277#if EV_CHECK_ENABLE
3278 assert (checkmax >= checkcnt);
3279 array_verify (EV_A_ (W *)checks, checkcnt);
3280#endif
3281
3282# if 0
3283#if EV_CHILD_ENABLE
3284 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
3285 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3286#endif
1546#endif 3287# endif
1547 array_check ((W **)prepares, preparecnt);
1548 array_check ((W **)checks, checkcnt);
1549#endif 3288#endif
1550} 3289}
1551 3290#endif
1552#endif /* multiplicity */
1553 3291
1554#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
1555struct ev_loop * 3294struct ev_loop *
1556ev_default_loop_init (unsigned int flags)
1557#else 3295#else
1558int 3296int
3297#endif
1559ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
1560#endif
1561{ 3299{
1562 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
1563 { 3301 {
1564#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
1565 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
1566#else 3304#else
1567 ev_default_loop_ptr = 1; 3305 ev_default_loop_ptr = 1;
1568#endif 3306#endif
1569 3307
1570 loop_init (EV_A_ flags); 3308 loop_init (EV_A_ flags);
1571 3309
1572 if (ev_backend (EV_A)) 3310 if (ev_backend (EV_A))
1573 { 3311 {
1574#ifndef _WIN32 3312#if EV_CHILD_ENABLE
1575 ev_signal_init (&childev, childcb, SIGCHLD); 3313 ev_signal_init (&childev, childcb, SIGCHLD);
1576 ev_set_priority (&childev, EV_MAXPRI); 3314 ev_set_priority (&childev, EV_MAXPRI);
1577 ev_signal_start (EV_A_ &childev); 3315 ev_signal_start (EV_A_ &childev);
1578 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3316 ev_unref (EV_A); /* child watcher should not keep loop alive */
1579#endif 3317#endif
… …
1584 3322
1585 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
1586} 3324}
1587 3325
1588void 3326void
1589ev_default_destroy (void) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
1590{ 3328{
1591#if EV_MULTIPLICITY 3329 postfork = 1;
1592 struct ev_loop *loop = ev_default_loop_ptr;
1593#endif
1594
1595#ifndef _WIN32
1596 ev_ref (EV_A); /* child watcher */
1597 ev_signal_stop (EV_A_ &childev);
1598#endif
1599
1600 loop_destroy (EV_A);
1601}
1602
1603void
1604ev_default_fork (void)
1605{
1606#if EV_MULTIPLICITY
1607 struct ev_loop *loop = ev_default_loop_ptr;
1608#endif
1609
1610 if (backend)
1611 postfork = 1; /* must be in line with ev_loop_fork */
1612} 3330}
1613 3331
1614/*****************************************************************************/ 3332/*****************************************************************************/
1615 3333
1616void 3334void
1617ev_invoke (EV_P_ void *w, int revents) 3335ev_invoke (EV_P_ void *w, int revents)
1618{ 3336{
1619 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
1620} 3338}
1621 3339
1622void inline_speed 3340unsigned int
1623call_pending (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
1624{ 3342{
1625 int pri; 3343 int pri;
3344 unsigned int count = 0;
1626 3345
1627 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
3347 count += pendingcnt [pri];
3348
3349 return count;
3350}
3351
3352ecb_noinline
3353void
3354ev_invoke_pending (EV_P)
3355{
3356 pendingpri = NUMPRI;
3357
3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
1628 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
1629 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631
1632 if (expect_true (p->w))
1633 { 3364 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1635 3366
1636 p->w->pending = 0; 3367 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
1638 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
1639 } 3370 }
1640 } 3371 }
3372 while (pendingpri);
1641} 3373}
1642 3374
1643#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
1644void inline_size 3376/* make idle watchers pending. this handles the "call-idle */
3377/* only when higher priorities are idle" logic */
3378inline_size void
1645idle_reify (EV_P) 3379idle_reify (EV_P)
1646{ 3380{
1647 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
1648 { 3382 {
1649 int pri; 3383 int pri;
1650 3384
1651 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
1652 { 3386 {
… …
1661 } 3395 }
1662 } 3396 }
1663} 3397}
1664#endif 3398#endif
1665 3399
1666void inline_size 3400/* make timers pending */
3401inline_size void
1667timers_reify (EV_P) 3402timers_reify (EV_P)
1668{ 3403{
1669 EV_FREQUENT_CHECK; 3404 EV_FREQUENT_CHECK;
1670 3405
1671 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 3406 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672 { 3407 {
1673 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 3408 do
1674
1675 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1676
1677 /* first reschedule or stop timer */
1678 if (w->repeat)
1679 { 3409 {
3410 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
3411
3412 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
3413
3414 /* first reschedule or stop timer */
3415 if (w->repeat)
3416 {
1680 ev_at (w) += w->repeat; 3417 ev_at (w) += w->repeat;
1681 if (ev_at (w) < mn_now) 3418 if (ev_at (w) < mn_now)
1682 ev_at (w) = mn_now; 3419 ev_at (w) = mn_now;
1683 3420
1684 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3421 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1685 3422
1686 ANHE_at_cache (timers [HEAP0]); 3423 ANHE_at_cache (timers [HEAP0]);
1687 downheap (timers, timercnt, HEAP0); 3424 downheap (timers, timercnt, HEAP0);
3425 }
3426 else
3427 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
3428
3429 EV_FREQUENT_CHECK;
3430 feed_reverse (EV_A_ (W)w);
1688 } 3431 }
1689 else 3432 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691 3433
1692 EV_FREQUENT_CHECK; 3434 feed_reverse_done (EV_A_ EV_TIMER);
1693 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1694 } 3435 }
1695} 3436}
1696 3437
1697#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
1698void inline_size 3439
3440ecb_noinline
3441static void
3442periodic_recalc (EV_P_ ev_periodic *w)
3443{
3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3446
3447 /* the above almost always errs on the low side */
3448 while (at <= ev_rt_now)
3449 {
3450 ev_tstamp nat = at + w->interval;
3451
3452 /* when resolution fails us, we use ev_rt_now */
3453 if (ecb_expect_false (nat == at))
3454 {
3455 at = ev_rt_now;
3456 break;
3457 }
3458
3459 at = nat;
3460 }
3461
3462 ev_at (w) = at;
3463}
3464
3465/* make periodics pending */
3466inline_size void
1699periodics_reify (EV_P) 3467periodics_reify (EV_P)
1700{ 3468{
1701 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
1702 3470
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 3472 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3473 do
1706
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 3474 {
3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
3476
3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
3478
3479 /* first reschedule or stop timer */
3480 if (w->reschedule_cb)
3481 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3482 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 3483
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 3484 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 3485
1716 ANHE_at_cache (periodics [HEAP0]); 3486 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
3488 }
3489 else if (w->interval)
3490 {
3491 periodic_recalc (EV_A_ w);
3492 ANHE_at_cache (periodics [HEAP0]);
3493 downheap (periodics, periodiccnt, HEAP0);
3494 }
3495 else
3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
3497
3498 EV_FREQUENT_CHECK;
3499 feed_reverse (EV_A_ (W)w);
1718 } 3500 }
1719 else if (w->interval) 3501 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1720 {
1721 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1722 /* if next trigger time is not sufficiently in the future, put it there */
1723 /* this might happen because of floating point inexactness */
1724 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1725 {
1726 ev_at (w) += w->interval;
1727 3502
1728 /* if interval is unreasonably low we might still have a time in the past */
1729 /* so correct this. this will make the periodic very inexact, but the user */
1730 /* has effectively asked to get triggered more often than possible */
1731 if (ev_at (w) < ev_rt_now)
1732 ev_at (w) = ev_rt_now;
1733 }
1734
1735 ANHE_at_cache (periodics [HEAP0]);
1736 downheap (periodics, periodiccnt, HEAP0);
1737 }
1738 else
1739 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1740
1741 EV_FREQUENT_CHECK;
1742 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 3503 feed_reverse_done (EV_A_ EV_PERIODIC);
1743 } 3504 }
1744} 3505}
1745 3506
1746static void noinline 3507/* simply recalculate all periodics */
3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
3509ecb_noinline ecb_cold
3510static void
1747periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
1748{ 3512{
1749 int i; 3513 int i;
1750 3514
1751 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3518 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1755 3519
1756 if (w->reschedule_cb) 3520 if (w->reschedule_cb)
1757 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3521 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1758 else if (w->interval) 3522 else if (w->interval)
1759 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3523 periodic_recalc (EV_A_ w);
1760 3524
1761 ANHE_at_cache (periodics [i]); 3525 ANHE_at_cache (periodics [i]);
1762 } 3526 }
1763 3527
1764 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
1765} 3529}
1766#endif 3530#endif
1767 3531
1768void inline_speed 3532/* adjust all timers by a given offset */
3533ecb_noinline ecb_cold
3534static void
3535timers_reschedule (EV_P_ ev_tstamp adjust)
3536{
3537 int i;
3538
3539 for (i = 0; i < timercnt; ++i)
3540 {
3541 ANHE *he = timers + i + HEAP0;
3542 ANHE_w (*he)->at += adjust;
3543 ANHE_at_cache (*he);
3544 }
3545}
3546
3547/* fetch new monotonic and realtime times from the kernel */
3548/* also detect if there was a timejump, and act accordingly */
3549inline_speed void
1769time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
1770{ 3551{
1771 int i;
1772
1773#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
1774 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
1775 { 3554 {
3555 int i;
1776 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
1777 3557
1778 mn_now = get_clock (); 3558 mn_now = get_clock ();
1779 3559
1780 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1781 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
1782 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1783 { 3563 {
1784 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
1785 return; 3565 return;
1786 } 3566 }
1787 3567
… …
1796 * doesn't hurt either as we only do this on time-jumps or 3576 * doesn't hurt either as we only do this on time-jumps or
1797 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
1798 */ 3578 */
1799 for (i = 4; --i; ) 3579 for (i = 4; --i; )
1800 { 3580 {
3581 ev_tstamp diff;
1801 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
1802 3583
3584 diff = odiff - rtmn_diff;
3585
1803 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1804 return; /* all is well */ 3587 return; /* all is well */
1805 3588
1806 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
1807 mn_now = get_clock (); 3590 mn_now = get_clock ();
1808 now_floor = mn_now; 3591 now_floor = mn_now;
1809 } 3592 }
1810 3593
3594 /* no timer adjustment, as the monotonic clock doesn't jump */
3595 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811# if EV_PERIODIC_ENABLE 3596# if EV_PERIODIC_ENABLE
1812 periodics_reschedule (EV_A); 3597 periodics_reschedule (EV_A);
1813# endif 3598# endif
1814 /* no timer adjustment, as the monotonic clock doesn't jump */
1815 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816 } 3599 }
1817 else 3600 else
1818#endif 3601#endif
1819 { 3602 {
1820 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
1821 3604
1822 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3605 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823 { 3606 {
3607 /* adjust timers. this is easy, as the offset is the same for all of them */
3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1824#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
1825 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
1826#endif 3611#endif
1827 /* adjust timers. this is easy, as the offset is the same for all of them */
1828 for (i = 0; i < timercnt; ++i)
1829 {
1830 ANHE *he = timers + i + HEAP0;
1831 ANHE_w (*he)->at += ev_rt_now - mn_now;
1832 ANHE_at_cache (*he);
1833 }
1834 } 3612 }
1835 3613
1836 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
1837 } 3615 }
1838} 3616}
1839 3617
1840void 3618int
1841ev_ref (EV_P)
1842{
1843 ++activecnt;
1844}
1845
1846void
1847ev_unref (EV_P)
1848{
1849 --activecnt;
1850}
1851
1852static int loop_done;
1853
1854void
1855ev_loop (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
1856{ 3620{
3621#if EV_FEATURE_API
3622 ++loop_depth;
3623#endif
3624
3625 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3626
1857 loop_done = EVUNLOOP_CANCEL; 3627 loop_done = EVBREAK_CANCEL;
1858 3628
1859 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3629 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1860 3630
1861 do 3631 do
1862 { 3632 {
1863#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
1864 ev_loop_verify (EV_A); 3634 ev_verify (EV_A);
1865#endif 3635#endif
1866 3636
1867#ifndef _WIN32 3637#ifndef _WIN32
1868 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
1869 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
1870 { 3640 {
1871 curpid = getpid (); 3641 curpid = getpid ();
1872 postfork = 1; 3642 postfork = 1;
1873 } 3643 }
1874#endif 3644#endif
1875 3645
1876#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
1877 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
1878 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
1879 if (forkcnt) 3649 if (forkcnt)
1880 { 3650 {
1881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1882 call_pending (EV_A); 3652 EV_INVOKE_PENDING;
1883 } 3653 }
1884#endif 3654#endif
1885 3655
3656#if EV_PREPARE_ENABLE
1886 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
1887 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
1888 { 3659 {
1889 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890 call_pending (EV_A); 3661 EV_INVOKE_PENDING;
1891 } 3662 }
3663#endif
1892 3664
1893 if (expect_false (!activecnt)) 3665 if (ecb_expect_false (loop_done))
1894 break; 3666 break;
1895 3667
1896 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
1897 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
1898 loop_fork (EV_A); 3670 loop_fork (EV_A);
1899 3671
1900 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
1901 fd_reify (EV_A); 3673 fd_reify (EV_A);
1902 3674
1903 /* calculate blocking time */ 3675 /* calculate blocking time */
1904 { 3676 {
1905 ev_tstamp waittime = 0.; 3677 ev_tstamp waittime = 0.;
1906 ev_tstamp sleeptime = 0.; 3678 ev_tstamp sleeptime = 0.;
1907 3679
3680 /* remember old timestamp for io_blocktime calculation */
3681 ev_tstamp prev_mn_now = mn_now;
3682
3683 /* update time to cancel out callback processing overhead */
3684 time_update (EV_A_ 1e100);
3685
3686 /* from now on, we want a pipe-wake-up */
3687 pipe_write_wanted = 1;
3688
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690
1908 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1909 { 3692 {
1910 /* update time to cancel out callback processing overhead */
1911 time_update (EV_A_ 1e100);
1912
1913 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
1914 3694
1915 if (timercnt) 3695 if (timercnt)
1916 { 3696 {
1917 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1918 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
1919 } 3699 }
1920 3700
1921#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
1922 if (periodiccnt) 3702 if (periodiccnt)
1923 { 3703 {
1924 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1925 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
1926 } 3706 }
1927#endif 3707#endif
1928 3708
3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
1929 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
1930 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
1931 3712
1932 sleeptime = waittime - backend_fudge; 3713 /* at this point, we NEED to wait, so we have to ensure */
3714 /* to pass a minimum nonzero value to the backend */
3715 if (ecb_expect_false (waittime < backend_mintime))
3716 waittime = backend_mintime;
1933 3717
3718 /* extra check because io_blocktime is commonly 0 */
1934 if (expect_true (sleeptime > io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
1935 sleeptime = io_blocktime;
1936
1937 if (sleeptime)
1938 { 3720 {
3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3722
3723 if (sleeptime > waittime - backend_mintime)
3724 sleeptime = waittime - backend_mintime;
3725
3726 if (ecb_expect_true (sleeptime > 0.))
3727 {
1939 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
1940 waittime -= sleeptime; 3729 waittime -= sleeptime;
3730 }
1941 } 3731 }
1942 } 3732 }
1943 3733
3734#if EV_FEATURE_API
1944 ++loop_count; 3735 ++loop_count;
3736#endif
3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1945 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3740
3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
3744 if (pipe_write_skipped)
3745 {
3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3748 }
1946 3749
1947 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
1948 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
1949 } 3752 }
1950 3753
… …
1957#if EV_IDLE_ENABLE 3760#if EV_IDLE_ENABLE
1958 /* queue idle watchers unless other events are pending */ 3761 /* queue idle watchers unless other events are pending */
1959 idle_reify (EV_A); 3762 idle_reify (EV_A);
1960#endif 3763#endif
1961 3764
3765#if EV_CHECK_ENABLE
1962 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
1963 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
1964 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3769#endif
1965 3770
1966 call_pending (EV_A); 3771 EV_INVOKE_PENDING;
1967 } 3772 }
1968 while (expect_true ( 3773 while (ecb_expect_true (
1969 activecnt 3774 activecnt
1970 && !loop_done 3775 && !loop_done
1971 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1972 )); 3777 ));
1973 3778
1974 if (loop_done == EVUNLOOP_ONE) 3779 if (loop_done == EVBREAK_ONE)
1975 loop_done = EVUNLOOP_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
1976}
1977 3781
3782#if EV_FEATURE_API
3783 --loop_depth;
3784#endif
3785
3786 return activecnt;
3787}
3788
1978void 3789void
1979ev_unloop (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
1980{ 3791{
1981 loop_done = how; 3792 loop_done = how;
1982} 3793}
1983 3794
3795void
3796ev_ref (EV_P) EV_NOEXCEPT
3797{
3798 ++activecnt;
3799}
3800
3801void
3802ev_unref (EV_P) EV_NOEXCEPT
3803{
3804 --activecnt;
3805}
3806
3807void
3808ev_now_update (EV_P) EV_NOEXCEPT
3809{
3810 time_update (EV_A_ 1e100);
3811}
3812
3813void
3814ev_suspend (EV_P) EV_NOEXCEPT
3815{
3816 ev_now_update (EV_A);
3817}
3818
3819void
3820ev_resume (EV_P) EV_NOEXCEPT
3821{
3822 ev_tstamp mn_prev = mn_now;
3823
3824 ev_now_update (EV_A);
3825 timers_reschedule (EV_A_ mn_now - mn_prev);
3826#if EV_PERIODIC_ENABLE
3827 /* TODO: really do this? */
3828 periodics_reschedule (EV_A);
3829#endif
3830}
3831
1984/*****************************************************************************/ 3832/*****************************************************************************/
3833/* singly-linked list management, used when the expected list length is short */
1985 3834
1986void inline_size 3835inline_size void
1987wlist_add (WL *head, WL elem) 3836wlist_add (WL *head, WL elem)
1988{ 3837{
1989 elem->next = *head; 3838 elem->next = *head;
1990 *head = elem; 3839 *head = elem;
1991} 3840}
1992 3841
1993void inline_size 3842inline_size void
1994wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
1995{ 3844{
1996 while (*head) 3845 while (*head)
1997 { 3846 {
1998 if (*head == elem) 3847 if (ecb_expect_true (*head == elem))
1999 { 3848 {
2000 *head = elem->next; 3849 *head = elem->next;
2001 return; 3850 break;
2002 } 3851 }
2003 3852
2004 head = &(*head)->next; 3853 head = &(*head)->next;
2005 } 3854 }
2006} 3855}
2007 3856
2008void inline_speed 3857/* internal, faster, version of ev_clear_pending */
3858inline_speed void
2009clear_pending (EV_P_ W w) 3859clear_pending (EV_P_ W w)
2010{ 3860{
2011 if (w->pending) 3861 if (w->pending)
2012 { 3862 {
2013 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3863 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014 w->pending = 0; 3864 w->pending = 0;
2015 } 3865 }
2016} 3866}
2017 3867
2018int 3868int
2019ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2020{ 3870{
2021 W w_ = (W)w; 3871 W w_ = (W)w;
2022 int pending = w_->pending; 3872 int pending = w_->pending;
2023 3873
2024 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
2025 { 3875 {
2026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3877 p->w = (W)&pending_w;
2027 w_->pending = 0; 3878 w_->pending = 0;
2028 p->w = 0;
2029 return p->events; 3879 return p->events;
2030 } 3880 }
2031 else 3881 else
2032 return 0; 3882 return 0;
2033} 3883}
2034 3884
2035void inline_size 3885inline_size void
2036pri_adjust (EV_P_ W w) 3886pri_adjust (EV_P_ W w)
2037{ 3887{
2038 int pri = w->priority; 3888 int pri = ev_priority (w);
2039 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3889 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3890 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041 w->priority = pri; 3891 ev_set_priority (w, pri);
2042} 3892}
2043 3893
2044void inline_speed 3894inline_speed void
2045ev_start (EV_P_ W w, int active) 3895ev_start (EV_P_ W w, int active)
2046{ 3896{
2047 pri_adjust (EV_A_ w); 3897 pri_adjust (EV_A_ w);
2048 w->active = active; 3898 w->active = active;
2049 ev_ref (EV_A); 3899 ev_ref (EV_A);
2050} 3900}
2051 3901
2052void inline_size 3902inline_size void
2053ev_stop (EV_P_ W w) 3903ev_stop (EV_P_ W w)
2054{ 3904{
2055 ev_unref (EV_A); 3905 ev_unref (EV_A);
2056 w->active = 0; 3906 w->active = 0;
2057} 3907}
2058 3908
2059/*****************************************************************************/ 3909/*****************************************************************************/
2060 3910
2061void noinline 3911ecb_noinline
3912void
2062ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2063{ 3914{
2064 int fd = w->fd; 3915 int fd = w->fd;
2065 3916
2066 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
2067 return; 3918 return;
2068 3919
2069 assert (("ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3921 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
2071 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2072 3927
2073 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2074 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2075 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
2076 3931
3932 /* common bug, apparently */
3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3934
2077 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3935 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2078 w->events &= ~EV_IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2079 3937
2080 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2081} 3939}
2082 3940
2083void noinline 3941ecb_noinline
3942void
2084ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2085{ 3944{
2086 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
2088 return; 3947 return;
2089 3948
2090 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3949 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
2092 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2093 3955
2094 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
2095 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2096 3958
2097 fd_change (EV_A_ w->fd, 1); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2098 3960
2099 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2100} 3962}
2101 3963
2102void noinline 3964ecb_noinline
3965void
2103ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2104{ 3967{
2105 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
2106 return; 3969 return;
2107 3970
2108 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
2109 3972
2110 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3973 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111 3974
2112 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2113 3976
2114 ++timercnt; 3977 ++timercnt;
2115 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2116 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2117 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
2118 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
2119 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
2120 3983
2121 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2122 3985
2123 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3986 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124} 3987}
2125 3988
2126void noinline 3989ecb_noinline
3990void
2127ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2128{ 3992{
2129 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2130 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
2131 return; 3995 return;
2132 3996
2133 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
2134 3998
2135 { 3999 {
2136 int active = ev_active (w); 4000 int active = ev_active (w);
2137 4001
2138 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4002 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139 4003
2140 --timercnt; 4004 --timercnt;
2141 4005
2142 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
2143 { 4007 {
2144 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
2145 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
2146 } 4010 }
2147 } 4011 }
2148 4012
2149 EV_FREQUENT_CHECK;
2150
2151 ev_at (w) -= mn_now; 4013 ev_at (w) -= mn_now;
2152 4014
2153 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
2154}
2155 4016
2156void noinline 4017 EV_FREQUENT_CHECK;
4018}
4019
4020ecb_noinline
4021void
2157ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2158{ 4023{
2159 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
2160 4027
2161 if (ev_is_active (w)) 4028 if (ev_is_active (w))
2162 { 4029 {
2163 if (w->repeat) 4030 if (w->repeat)
2164 { 4031 {
… …
2176 } 4043 }
2177 4044
2178 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2179} 4046}
2180 4047
4048ev_tstamp
4049ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4050{
4051 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4052}
4053
2181#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
2182void noinline 4055ecb_noinline
4056void
2183ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2184{ 4058{
2185 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
2186 return; 4060 return;
2187 4061
2188 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 4064 else if (w->interval)
2191 { 4065 {
2192 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 4066 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2193 /* this formula differs from the one in periodic_reify because we do not always round up */ 4067 periodic_recalc (EV_A_ w);
2194 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195 } 4068 }
2196 else 4069 else
2197 ev_at (w) = w->offset; 4070 ev_at (w) = w->offset;
2198 4071
2199 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2200 4073
2201 ++periodiccnt; 4074 ++periodiccnt;
2202 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2203 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2204 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2205 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
2206 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
2207 4080
2208 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2209 4082
2210 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4083 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211} 4084}
2212 4085
2213void noinline 4086ecb_noinline
4087void
2214ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2215{ 4089{
2216 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
2218 return; 4092 return;
2219 4093
2220 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2221 4095
2222 { 4096 {
2223 int active = ev_active (w); 4097 int active = ev_active (w);
2224 4098
2225 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4099 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226 4100
2227 --periodiccnt; 4101 --periodiccnt;
2228 4102
2229 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
2230 { 4104 {
2231 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
2232 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
2233 } 4107 }
2234 } 4108 }
2235 4109
2236 EV_FREQUENT_CHECK;
2237
2238 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
2239}
2240 4111
2241void noinline 4112 EV_FREQUENT_CHECK;
4113}
4114
4115ecb_noinline
4116void
2242ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2243{ 4118{
2244 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
2245 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
2246 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
2247} 4122}
… …
2249 4124
2250#ifndef SA_RESTART 4125#ifndef SA_RESTART
2251# define SA_RESTART 0 4126# define SA_RESTART 0
2252#endif 4127#endif
2253 4128
2254void noinline 4129#if EV_SIGNAL_ENABLE
4130
4131ecb_noinline
4132void
2255ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2256{ 4134{
4135 if (ecb_expect_false (ev_is_active (w)))
4136 return;
4137
4138 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4139
2257#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
2258 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4141 assert (("libev: a signal must not be attached to two different loops",
2259#endif 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2260 if (expect_false (ev_is_active (w)))
2261 return;
2262 4143
2263 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 4144 signals [w->signum - 1].loop = EV_A;
4145 ECB_MEMORY_FENCE_RELEASE;
4146#endif
2264 4147
2265 evpipe_init (EV_A);
2266
2267 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2268 4149
4150#if EV_USE_SIGNALFD
4151 if (sigfd == -2)
2269 { 4152 {
2270#ifndef _WIN32 4153 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2271 sigset_t full, prev; 4154 if (sigfd < 0 && errno == EINVAL)
2272 sigfillset (&full); 4155 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2273 sigprocmask (SIG_SETMASK, &full, &prev);
2274#endif
2275 4156
2276 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 4157 if (sigfd >= 0)
4158 {
4159 fd_intern (sigfd); /* doing it twice will not hurt */
2277 4160
2278#ifndef _WIN32 4161 sigemptyset (&sigfd_set);
2279 sigprocmask (SIG_SETMASK, &prev, 0); 4162
2280#endif 4163 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4164 ev_set_priority (&sigfd_w, EV_MAXPRI);
4165 ev_io_start (EV_A_ &sigfd_w);
4166 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4167 }
2281 } 4168 }
4169
4170 if (sigfd >= 0)
4171 {
4172 /* TODO: check .head */
4173 sigaddset (&sigfd_set, w->signum);
4174 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4175
4176 signalfd (sigfd, &sigfd_set, 0);
4177 }
4178#endif
2282 4179
2283 ev_start (EV_A_ (W)w, 1); 4180 ev_start (EV_A_ (W)w, 1);
2284 wlist_add (&signals [w->signum - 1].head, (WL)w); 4181 wlist_add (&signals [w->signum - 1].head, (WL)w);
2285 4182
2286 if (!((WL)w)->next) 4183 if (!((WL)w)->next)
4184# if EV_USE_SIGNALFD
4185 if (sigfd < 0) /*TODO*/
4186# endif
2287 { 4187 {
2288#if _WIN32 4188# ifdef _WIN32
4189 evpipe_init (EV_A);
4190
2289 signal (w->signum, ev_sighandler); 4191 signal (w->signum, ev_sighandler);
2290#else 4192# else
2291 struct sigaction sa; 4193 struct sigaction sa;
4194
4195 evpipe_init (EV_A);
4196
2292 sa.sa_handler = ev_sighandler; 4197 sa.sa_handler = ev_sighandler;
2293 sigfillset (&sa.sa_mask); 4198 sigfillset (&sa.sa_mask);
2294 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4199 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2295 sigaction (w->signum, &sa, 0); 4200 sigaction (w->signum, &sa, 0);
4201
4202 if (origflags & EVFLAG_NOSIGMASK)
4203 {
4204 sigemptyset (&sa.sa_mask);
4205 sigaddset (&sa.sa_mask, w->signum);
4206 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4207 }
2296#endif 4208#endif
2297 } 4209 }
2298 4210
2299 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2300} 4212}
2301 4213
2302void noinline 4214ecb_noinline
4215void
2303ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2304{ 4217{
2305 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2307 return; 4220 return;
2308 4221
2309 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2310 4223
2311 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
2312 ev_stop (EV_A_ (W)w); 4225 ev_stop (EV_A_ (W)w);
2313 4226
2314 if (!signals [w->signum - 1].head) 4227 if (!signals [w->signum - 1].head)
2315 signal (w->signum, SIG_DFL); 4228 {
2316
2317 EV_FREQUENT_CHECK;
2318}
2319
2320void
2321ev_child_start (EV_P_ ev_child *w)
2322{
2323#if EV_MULTIPLICITY 4229#if EV_MULTIPLICITY
4230 signals [w->signum - 1].loop = 0; /* unattach from signal */
4231#endif
4232#if EV_USE_SIGNALFD
4233 if (sigfd >= 0)
4234 {
4235 sigset_t ss;
4236
4237 sigemptyset (&ss);
4238 sigaddset (&ss, w->signum);
4239 sigdelset (&sigfd_set, w->signum);
4240
4241 signalfd (sigfd, &sigfd_set, 0);
4242 sigprocmask (SIG_UNBLOCK, &ss, 0);
4243 }
4244 else
4245#endif
4246 signal (w->signum, SIG_DFL);
4247 }
4248
4249 EV_FREQUENT_CHECK;
4250}
4251
4252#endif
4253
4254#if EV_CHILD_ENABLE
4255
4256void
4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4258{
4259#if EV_MULTIPLICITY
2324 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4260 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325#endif 4261#endif
2326 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
2327 return; 4263 return;
2328 4264
2329 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2330 4266
2331 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
2332 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4268 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2333 4269
2334 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2335} 4271}
2336 4272
2337void 4273void
2338ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2339{ 4275{
2340 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
2341 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
2342 return; 4278 return;
2343 4279
2344 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2345 4281
2346 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2347 ev_stop (EV_A_ (W)w); 4283 ev_stop (EV_A_ (W)w);
2348 4284
2349 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2350} 4286}
4287
4288#endif
2351 4289
2352#if EV_STAT_ENABLE 4290#if EV_STAT_ENABLE
2353 4291
2354# ifdef _WIN32 4292# ifdef _WIN32
2355# undef lstat 4293# undef lstat
2356# define lstat(a,b) _stati64 (a,b) 4294# define lstat(a,b) _stati64 (a,b)
2357# endif 4295# endif
2358 4296
2359#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
2361 4300
2362static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4301ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363 4302
2364#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
2365# define EV_INOTIFY_BUFSIZE 8192
2366 4304
2367static void noinline 4305/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4306# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4307
4308ecb_noinline
4309static void
2368infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
2369{ 4311{
2370 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4312 w->wd = inotify_add_watch (fs_fd, w->path,
4313 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4314 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4315 | IN_DONT_FOLLOW | IN_MASK_ADD);
2371 4316
2372 if (w->wd < 0) 4317 if (w->wd >= 0)
4318 {
4319 struct statfs sfs;
4320
4321 /* now local changes will be tracked by inotify, but remote changes won't */
4322 /* unless the filesystem is known to be local, we therefore still poll */
4323 /* also do poll on <2.6.25, but with normal frequency */
4324
4325 if (!fs_2625)
4326 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4327 else if (!statfs (w->path, &sfs)
4328 && (sfs.f_type == 0x1373 /* devfs */
4329 || sfs.f_type == 0x4006 /* fat */
4330 || sfs.f_type == 0x4d44 /* msdos */
4331 || sfs.f_type == 0xEF53 /* ext2/3 */
4332 || sfs.f_type == 0x72b6 /* jffs2 */
4333 || sfs.f_type == 0x858458f6 /* ramfs */
4334 || sfs.f_type == 0x5346544e /* ntfs */
4335 || sfs.f_type == 0x3153464a /* jfs */
4336 || sfs.f_type == 0x9123683e /* btrfs */
4337 || sfs.f_type == 0x52654973 /* reiser3 */
4338 || sfs.f_type == 0x01021994 /* tmpfs */
4339 || sfs.f_type == 0x58465342 /* xfs */))
4340 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4341 else
4342 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2373 { 4343 }
2374 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 4344 else
4345 {
4346 /* can't use inotify, continue to stat */
4347 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2375 4348
2376 /* monitor some parent directory for speedup hints */ 4349 /* if path is not there, monitor some parent directory for speedup hints */
2377 /* note that exceeding the hardcoded limit is not a correctness issue, */ 4350 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2378 /* but an efficiency issue only */ 4351 /* but an efficiency issue only */
2379 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4352 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380 { 4353 {
2381 char path [4096]; 4354 char path [4096];
2382 strcpy (path, w->path); 4355 strcpy (path, w->path);
… …
2386 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 4359 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 4360 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388 4361
2389 char *pend = strrchr (path, '/'); 4362 char *pend = strrchr (path, '/');
2390 4363
2391 if (!pend) 4364 if (!pend || pend == path)
2392 break; /* whoops, no '/', complain to your admin */ 4365 break;
2393 4366
2394 *pend = 0; 4367 *pend = 0;
2395 w->wd = inotify_add_watch (fs_fd, path, mask); 4368 w->wd = inotify_add_watch (fs_fd, path, mask);
2396 } 4369 }
2397 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4370 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398 } 4371 }
2399 } 4372 }
2400 else
2401 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402 4373
2403 if (w->wd >= 0) 4374 if (w->wd >= 0)
2404 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4375 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2405}
2406 4376
2407static void noinline 4377 /* now re-arm timer, if required */
4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4379 ev_timer_again (EV_A_ &w->timer);
4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4381}
4382
4383ecb_noinline
4384static void
2408infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
2409{ 4386{
2410 int slot; 4387 int slot;
2411 int wd = w->wd; 4388 int wd = w->wd;
2412 4389
2413 if (wd < 0) 4390 if (wd < 0)
2414 return; 4391 return;
2415 4392
2416 w->wd = -2; 4393 w->wd = -2;
2417 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4394 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2418 wlist_del (&fs_hash [slot].head, (WL)w); 4395 wlist_del (&fs_hash [slot].head, (WL)w);
2419 4396
2420 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
2421 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
2422} 4399}
2423 4400
2424static void noinline 4401ecb_noinline
4402static void
2425infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426{ 4404{
2427 if (slot < 0) 4405 if (slot < 0)
2428 /* overflow, need to check for all hahs slots */ 4406 /* overflow, need to check for all hash slots */
2429 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2430 infy_wd (EV_A_ slot, wd, ev); 4408 infy_wd (EV_A_ slot, wd, ev);
2431 else 4409 else
2432 { 4410 {
2433 WL w_; 4411 WL w_;
2434 4412
2435 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4413 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2436 { 4414 {
2437 ev_stat *w = (ev_stat *)w_; 4415 ev_stat *w = (ev_stat *)w_;
2438 w_ = w_->next; /* lets us remove this watcher and all before it */ 4416 w_ = w_->next; /* lets us remove this watcher and all before it */
2439 4417
2440 if (w->wd == wd || wd == -1) 4418 if (w->wd == wd || wd == -1)
2441 { 4419 {
2442 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4420 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443 { 4421 {
4422 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2444 w->wd = -1; 4423 w->wd = -1;
2445 infy_add (EV_A_ w); /* re-add, no matter what */ 4424 infy_add (EV_A_ w); /* re-add, no matter what */
2446 } 4425 }
2447 4426
2448 stat_timer_cb (EV_A_ &w->timer, 0); 4427 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2453 4432
2454static void 4433static void
2455infy_cb (EV_P_ ev_io *w, int revents) 4434infy_cb (EV_P_ ev_io *w, int revents)
2456{ 4435{
2457 char buf [EV_INOTIFY_BUFSIZE]; 4436 char buf [EV_INOTIFY_BUFSIZE];
2458 struct inotify_event *ev = (struct inotify_event *)buf;
2459 int ofs; 4437 int ofs;
2460 int len = read (fs_fd, buf, sizeof (buf)); 4438 int len = read (fs_fd, buf, sizeof (buf));
2461 4439
2462 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4440 for (ofs = 0; ofs < len; )
4441 {
4442 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2463 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4443 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4444 ofs += sizeof (struct inotify_event) + ev->len;
4445 }
2464} 4446}
2465 4447
2466void inline_size 4448inline_size ecb_cold
4449void
4450ev_check_2625 (EV_P)
4451{
4452 /* kernels < 2.6.25 are borked
4453 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4454 */
4455 if (ev_linux_version () < 0x020619)
4456 return;
4457
4458 fs_2625 = 1;
4459}
4460
4461inline_size int
4462infy_newfd (void)
4463{
4464#if defined IN_CLOEXEC && defined IN_NONBLOCK
4465 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4466 if (fd >= 0)
4467 return fd;
4468#endif
4469 return inotify_init ();
4470}
4471
4472inline_size void
2467infy_init (EV_P) 4473infy_init (EV_P)
2468{ 4474{
2469 if (fs_fd != -2) 4475 if (fs_fd != -2)
2470 return; 4476 return;
2471 4477
4478 fs_fd = -1;
4479
4480 ev_check_2625 (EV_A);
4481
2472 fs_fd = inotify_init (); 4482 fs_fd = infy_newfd ();
2473 4483
2474 if (fs_fd >= 0) 4484 if (fs_fd >= 0)
2475 { 4485 {
4486 fd_intern (fs_fd);
2476 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4487 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2477 ev_set_priority (&fs_w, EV_MAXPRI); 4488 ev_set_priority (&fs_w, EV_MAXPRI);
2478 ev_io_start (EV_A_ &fs_w); 4489 ev_io_start (EV_A_ &fs_w);
4490 ev_unref (EV_A);
2479 } 4491 }
2480} 4492}
2481 4493
2482void inline_size 4494inline_size void
2483infy_fork (EV_P) 4495infy_fork (EV_P)
2484{ 4496{
2485 int slot; 4497 int slot;
2486 4498
2487 if (fs_fd < 0) 4499 if (fs_fd < 0)
2488 return; 4500 return;
2489 4501
4502 ev_ref (EV_A);
4503 ev_io_stop (EV_A_ &fs_w);
2490 close (fs_fd); 4504 close (fs_fd);
2491 fs_fd = inotify_init (); 4505 fs_fd = infy_newfd ();
2492 4506
4507 if (fs_fd >= 0)
4508 {
4509 fd_intern (fs_fd);
4510 ev_io_set (&fs_w, fs_fd, EV_READ);
4511 ev_io_start (EV_A_ &fs_w);
4512 ev_unref (EV_A);
4513 }
4514
2493 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4515 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2494 { 4516 {
2495 WL w_ = fs_hash [slot].head; 4517 WL w_ = fs_hash [slot].head;
2496 fs_hash [slot].head = 0; 4518 fs_hash [slot].head = 0;
2497 4519
2498 while (w_) 4520 while (w_)
… …
2503 w->wd = -1; 4525 w->wd = -1;
2504 4526
2505 if (fs_fd >= 0) 4527 if (fs_fd >= 0)
2506 infy_add (EV_A_ w); /* re-add, no matter what */ 4528 infy_add (EV_A_ w); /* re-add, no matter what */
2507 else 4529 else
4530 {
4531 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4532 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2508 ev_timer_start (EV_A_ &w->timer); 4533 ev_timer_again (EV_A_ &w->timer);
4534 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4535 }
2509 } 4536 }
2510
2511 } 4537 }
2512} 4538}
2513 4539
2514#endif 4540#endif
2515 4541
4542#ifdef _WIN32
4543# define EV_LSTAT(p,b) _stati64 (p, b)
4544#else
4545# define EV_LSTAT(p,b) lstat (p, b)
4546#endif
4547
2516void 4548void
2517ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2518{ 4550{
2519 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
2520 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
2521 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
2522 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
2523} 4555}
2524 4556
2525static void noinline 4557ecb_noinline
4558static void
2526stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2527{ 4560{
2528 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2529 4562
2530 /* we copy this here each the time so that */ 4563 ev_statdata prev = w->attr;
2531 /* prev has the old value when the callback gets invoked */
2532 w->prev = w->attr;
2533 ev_stat_stat (EV_A_ w); 4564 ev_stat_stat (EV_A_ w);
2534 4565
2535 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4566 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2536 if ( 4567 if (
2537 w->prev.st_dev != w->attr.st_dev 4568 prev.st_dev != w->attr.st_dev
2538 || w->prev.st_ino != w->attr.st_ino 4569 || prev.st_ino != w->attr.st_ino
2539 || w->prev.st_mode != w->attr.st_mode 4570 || prev.st_mode != w->attr.st_mode
2540 || w->prev.st_nlink != w->attr.st_nlink 4571 || prev.st_nlink != w->attr.st_nlink
2541 || w->prev.st_uid != w->attr.st_uid 4572 || prev.st_uid != w->attr.st_uid
2542 || w->prev.st_gid != w->attr.st_gid 4573 || prev.st_gid != w->attr.st_gid
2543 || w->prev.st_rdev != w->attr.st_rdev 4574 || prev.st_rdev != w->attr.st_rdev
2544 || w->prev.st_size != w->attr.st_size 4575 || prev.st_size != w->attr.st_size
2545 || w->prev.st_atime != w->attr.st_atime 4576 || prev.st_atime != w->attr.st_atime
2546 || w->prev.st_mtime != w->attr.st_mtime 4577 || prev.st_mtime != w->attr.st_mtime
2547 || w->prev.st_ctime != w->attr.st_ctime 4578 || prev.st_ctime != w->attr.st_ctime
2548 ) { 4579 ) {
4580 /* we only update w->prev on actual differences */
4581 /* in case we test more often than invoke the callback, */
4582 /* to ensure that prev is always different to attr */
4583 w->prev = prev;
4584
2549 #if EV_USE_INOTIFY 4585 #if EV_USE_INOTIFY
4586 if (fs_fd >= 0)
4587 {
2550 infy_del (EV_A_ w); 4588 infy_del (EV_A_ w);
2551 infy_add (EV_A_ w); 4589 infy_add (EV_A_ w);
2552 ev_stat_stat (EV_A_ w); /* avoid race... */ 4590 ev_stat_stat (EV_A_ w); /* avoid race... */
4591 }
2553 #endif 4592 #endif
2554 4593
2555 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
2556 } 4595 }
2557} 4596}
2558 4597
2559void 4598void
2560ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2561{ 4600{
2562 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
2563 return; 4602 return;
2564 4603
2565 /* since we use memcmp, we need to clear any padding data etc. */
2566 memset (&w->prev, 0, sizeof (ev_statdata));
2567 memset (&w->attr, 0, sizeof (ev_statdata));
2568
2569 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
2570 4605
4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571 if (w->interval < MIN_STAT_INTERVAL) 4607 w->interval = MIN_STAT_INTERVAL;
2572 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573 4608
2574 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 4609 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2575 ev_set_priority (&w->timer, ev_priority (w)); 4610 ev_set_priority (&w->timer, ev_priority (w));
2576 4611
2577#if EV_USE_INOTIFY 4612#if EV_USE_INOTIFY
2578 infy_init (EV_A); 4613 infy_init (EV_A);
2579 4614
2580 if (fs_fd >= 0) 4615 if (fs_fd >= 0)
2581 infy_add (EV_A_ w); 4616 infy_add (EV_A_ w);
2582 else 4617 else
2583#endif 4618#endif
4619 {
2584 ev_timer_start (EV_A_ &w->timer); 4620 ev_timer_again (EV_A_ &w->timer);
4621 ev_unref (EV_A);
4622 }
2585 4623
2586 ev_start (EV_A_ (W)w, 1); 4624 ev_start (EV_A_ (W)w, 1);
2587 4625
2588 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
2589} 4627}
2590 4628
2591void 4629void
2592ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2593{ 4631{
2594 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
2596 return; 4634 return;
2597 4635
2598 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
2599 4637
2600#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
2601 infy_del (EV_A_ w); 4639 infy_del (EV_A_ w);
2602#endif 4640#endif
4641
4642 if (ev_is_active (&w->timer))
4643 {
4644 ev_ref (EV_A);
2603 ev_timer_stop (EV_A_ &w->timer); 4645 ev_timer_stop (EV_A_ &w->timer);
4646 }
2604 4647
2605 ev_stop (EV_A_ (W)w); 4648 ev_stop (EV_A_ (W)w);
2606 4649
2607 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
2608} 4651}
2609#endif 4652#endif
2610 4653
2611#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
2612void 4655void
2613ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2614{ 4657{
2615 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
2616 return; 4659 return;
2617 4660
2618 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
2619 4662
2620 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
2623 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
2624 4667
2625 ++idleall; 4668 ++idleall;
2626 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
2627 4670
2628 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4671 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2629 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
2630 } 4673 }
2631 4674
2632 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
2633} 4676}
2634 4677
2635void 4678void
2636ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2637{ 4680{
2638 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
2639 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
2640 return; 4683 return;
2641 4684
2642 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
2643 4686
2644 { 4687 {
… …
2653 4696
2654 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
2655} 4698}
2656#endif 4699#endif
2657 4700
4701#if EV_PREPARE_ENABLE
2658void 4702void
2659ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2660{ 4704{
2661 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
2662 return; 4706 return;
2663 4707
2664 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
2665 4709
2666 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
2667 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2668 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
2669 4713
2670 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
2671} 4715}
2672 4716
2673void 4717void
2674ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2675{ 4719{
2676 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
2677 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
2678 return; 4722 return;
2679 4723
2680 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
2681 4725
2682 { 4726 {
… …
2688 4732
2689 ev_stop (EV_A_ (W)w); 4733 ev_stop (EV_A_ (W)w);
2690 4734
2691 EV_FREQUENT_CHECK; 4735 EV_FREQUENT_CHECK;
2692} 4736}
4737#endif
2693 4738
4739#if EV_CHECK_ENABLE
2694void 4740void
2695ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2696{ 4742{
2697 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
2698 return; 4744 return;
2699 4745
2700 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
2701 4747
2702 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
2703 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2704 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
2705 4751
2706 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
2707} 4753}
2708 4754
2709void 4755void
2710ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2711{ 4757{
2712 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
2713 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
2714 return; 4760 return;
2715 4761
2716 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
2717 4763
2718 { 4764 {
… …
2724 4770
2725 ev_stop (EV_A_ (W)w); 4771 ev_stop (EV_A_ (W)w);
2726 4772
2727 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
2728} 4774}
4775#endif
2729 4776
2730#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
2731void noinline 4778ecb_noinline
4779void
2732ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2733{ 4781{
2734 ev_loop (w->other, EVLOOP_NONBLOCK); 4782 ev_run (w->other, EVRUN_NOWAIT);
2735} 4783}
2736 4784
2737static void 4785static void
2738embed_io_cb (EV_P_ ev_io *io, int revents) 4786embed_io_cb (EV_P_ ev_io *io, int revents)
2739{ 4787{
2740 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4788 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2741 4789
2742 if (ev_cb (w)) 4790 if (ev_cb (w))
2743 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4791 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2744 else 4792 else
2745 ev_loop (w->other, EVLOOP_NONBLOCK); 4793 ev_run (w->other, EVRUN_NOWAIT);
2746} 4794}
2747 4795
2748static void 4796static void
2749embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4797embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2750{ 4798{
2751 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4799 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2752 4800
2753 { 4801 {
2754 struct ev_loop *loop = w->other; 4802 EV_P = w->other;
2755 4803
2756 while (fdchangecnt) 4804 while (fdchangecnt)
2757 { 4805 {
2758 fd_reify (EV_A); 4806 fd_reify (EV_A);
2759 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4807 ev_run (EV_A_ EVRUN_NOWAIT);
2760 } 4808 }
2761 } 4809 }
4810}
4811
4812static void
4813embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4814{
4815 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4816
4817 ev_embed_stop (EV_A_ w);
4818
4819 {
4820 EV_P = w->other;
4821
4822 ev_loop_fork (EV_A);
4823 ev_run (EV_A_ EVRUN_NOWAIT);
4824 }
4825
4826 ev_embed_start (EV_A_ w);
2762} 4827}
2763 4828
2764#if 0 4829#if 0
2765static void 4830static void
2766embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4831embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2768 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
2769} 4834}
2770#endif 4835#endif
2771 4836
2772void 4837void
2773ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
2774{ 4839{
2775 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
2776 return; 4841 return;
2777 4842
2778 { 4843 {
2779 struct ev_loop *loop = w->other; 4844 EV_P = w->other;
2780 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4845 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2781 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4846 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782 } 4847 }
2783 4848
2784 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
2785 4850
… …
2788 4853
2789 ev_prepare_init (&w->prepare, embed_prepare_cb); 4854 ev_prepare_init (&w->prepare, embed_prepare_cb);
2790 ev_set_priority (&w->prepare, EV_MINPRI); 4855 ev_set_priority (&w->prepare, EV_MINPRI);
2791 ev_prepare_start (EV_A_ &w->prepare); 4856 ev_prepare_start (EV_A_ &w->prepare);
2792 4857
4858 ev_fork_init (&w->fork, embed_fork_cb);
4859 ev_fork_start (EV_A_ &w->fork);
4860
2793 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4861 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794 4862
2795 ev_start (EV_A_ (W)w, 1); 4863 ev_start (EV_A_ (W)w, 1);
2796 4864
2797 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
2798} 4866}
2799 4867
2800void 4868void
2801ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
2802{ 4870{
2803 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
2805 return; 4873 return;
2806 4874
2807 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
2808 4876
2809 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
2810 ev_prepare_stop (EV_A_ &w->prepare); 4878 ev_prepare_stop (EV_A_ &w->prepare);
4879 ev_fork_stop (EV_A_ &w->fork);
2811 4880
2812 ev_stop (EV_A_ (W)w); 4881 ev_stop (EV_A_ (W)w);
2813 4882
2814 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
2815} 4884}
2816#endif 4885#endif
2817 4886
2818#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
2819void 4888void
2820ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
2821{ 4890{
2822 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
2823 return; 4892 return;
2824 4893
2825 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
2826 4895
2827 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
2828 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
2829 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
2830 4899
2831 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
2832} 4901}
2833 4902
2834void 4903void
2835ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
2836{ 4905{
2837 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
2838 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
2839 return; 4908 return;
2840 4909
2841 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
2842 4911
2843 { 4912 {
… …
2851 4920
2852 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
2853} 4922}
2854#endif 4923#endif
2855 4924
4925#if EV_CLEANUP_ENABLE
4926void
4927ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4928{
4929 if (ecb_expect_false (ev_is_active (w)))
4930 return;
4931
4932 EV_FREQUENT_CHECK;
4933
4934 ev_start (EV_A_ (W)w, ++cleanupcnt);
4935 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4936 cleanups [cleanupcnt - 1] = w;
4937
4938 /* cleanup watchers should never keep a refcount on the loop */
4939 ev_unref (EV_A);
4940 EV_FREQUENT_CHECK;
4941}
4942
4943void
4944ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4945{
4946 clear_pending (EV_A_ (W)w);
4947 if (ecb_expect_false (!ev_is_active (w)))
4948 return;
4949
4950 EV_FREQUENT_CHECK;
4951 ev_ref (EV_A);
4952
4953 {
4954 int active = ev_active (w);
4955
4956 cleanups [active - 1] = cleanups [--cleanupcnt];
4957 ev_active (cleanups [active - 1]) = active;
4958 }
4959
4960 ev_stop (EV_A_ (W)w);
4961
4962 EV_FREQUENT_CHECK;
4963}
4964#endif
4965
2856#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
2857void 4967void
2858ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
2859{ 4969{
2860 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
2861 return; 4971 return;
2862 4972
4973 w->sent = 0;
4974
2863 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
2864 4976
2865 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
2866 4978
2867 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
2868 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
2869 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
2870 4982
2871 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
2872} 4984}
2873 4985
2874void 4986void
2875ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
2876{ 4988{
2877 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
2878 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
2879 return; 4991 return;
2880 4992
2881 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
2882 4994
2883 { 4995 {
… …
2891 5003
2892 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
2893} 5005}
2894 5006
2895void 5007void
2896ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
2897{ 5009{
2898 w->sent = 1; 5010 w->sent = 1;
2899 evpipe_write (EV_A_ &gotasync); 5011 evpipe_write (EV_A_ &async_pending);
2900} 5012}
2901#endif 5013#endif
2902 5014
2903/*****************************************************************************/ 5015/*****************************************************************************/
2904 5016
… …
2914once_cb (EV_P_ struct ev_once *once, int revents) 5026once_cb (EV_P_ struct ev_once *once, int revents)
2915{ 5027{
2916 void (*cb)(int revents, void *arg) = once->cb; 5028 void (*cb)(int revents, void *arg) = once->cb;
2917 void *arg = once->arg; 5029 void *arg = once->arg;
2918 5030
2919 ev_io_stop (EV_A_ &once->io); 5031 ev_io_stop (EV_A_ &once->io);
2920 ev_timer_stop (EV_A_ &once->to); 5032 ev_timer_stop (EV_A_ &once->to);
2921 ev_free (once); 5033 ev_free (once);
2922 5034
2923 cb (revents, arg); 5035 cb (revents, arg);
2924} 5036}
2925 5037
2926static void 5038static void
2927once_cb_io (EV_P_ ev_io *w, int revents) 5039once_cb_io (EV_P_ ev_io *w, int revents)
2928{ 5040{
2929 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 5041 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
5042
5043 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930} 5044}
2931 5045
2932static void 5046static void
2933once_cb_to (EV_P_ ev_timer *w, int revents) 5047once_cb_to (EV_P_ ev_timer *w, int revents)
2934{ 5048{
2935 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 5049 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
2936}
2937 5050
5051 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
5052}
5053
2938void 5054void
2939ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5055ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
2940{ 5056{
2941 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5057 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2942
2943 if (expect_false (!once))
2944 {
2945 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
2946 return;
2947 }
2948 5058
2949 once->cb = cb; 5059 once->cb = cb;
2950 once->arg = arg; 5060 once->arg = arg;
2951 5061
2952 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
2962 ev_timer_set (&once->to, timeout, 0.); 5072 ev_timer_set (&once->to, timeout, 0.);
2963 ev_timer_start (EV_A_ &once->to); 5073 ev_timer_start (EV_A_ &once->to);
2964 } 5074 }
2965} 5075}
2966 5076
5077/*****************************************************************************/
5078
5079#if EV_WALK_ENABLE
5080ecb_cold
5081void
5082ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
5083{
5084 int i, j;
5085 ev_watcher_list *wl, *wn;
5086
5087 if (types & (EV_IO | EV_EMBED))
5088 for (i = 0; i < anfdmax; ++i)
5089 for (wl = anfds [i].head; wl; )
5090 {
5091 wn = wl->next;
5092
5093#if EV_EMBED_ENABLE
5094 if (ev_cb ((ev_io *)wl) == embed_io_cb)
5095 {
5096 if (types & EV_EMBED)
5097 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
5098 }
5099 else
5100#endif
5101#if EV_USE_INOTIFY
5102 if (ev_cb ((ev_io *)wl) == infy_cb)
5103 ;
5104 else
5105#endif
5106 if ((ev_io *)wl != &pipe_w)
5107 if (types & EV_IO)
5108 cb (EV_A_ EV_IO, wl);
5109
5110 wl = wn;
5111 }
5112
5113 if (types & (EV_TIMER | EV_STAT))
5114 for (i = timercnt + HEAP0; i-- > HEAP0; )
5115#if EV_STAT_ENABLE
5116 /*TODO: timer is not always active*/
5117 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
5118 {
5119 if (types & EV_STAT)
5120 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
5121 }
5122 else
5123#endif
5124 if (types & EV_TIMER)
5125 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
5126
5127#if EV_PERIODIC_ENABLE
5128 if (types & EV_PERIODIC)
5129 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
5130 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
5131#endif
5132
5133#if EV_IDLE_ENABLE
5134 if (types & EV_IDLE)
5135 for (j = NUMPRI; j--; )
5136 for (i = idlecnt [j]; i--; )
5137 cb (EV_A_ EV_IDLE, idles [j][i]);
5138#endif
5139
5140#if EV_FORK_ENABLE
5141 if (types & EV_FORK)
5142 for (i = forkcnt; i--; )
5143 if (ev_cb (forks [i]) != embed_fork_cb)
5144 cb (EV_A_ EV_FORK, forks [i]);
5145#endif
5146
5147#if EV_ASYNC_ENABLE
5148 if (types & EV_ASYNC)
5149 for (i = asynccnt; i--; )
5150 cb (EV_A_ EV_ASYNC, asyncs [i]);
5151#endif
5152
5153#if EV_PREPARE_ENABLE
5154 if (types & EV_PREPARE)
5155 for (i = preparecnt; i--; )
5156# if EV_EMBED_ENABLE
5157 if (ev_cb (prepares [i]) != embed_prepare_cb)
5158# endif
5159 cb (EV_A_ EV_PREPARE, prepares [i]);
5160#endif
5161
5162#if EV_CHECK_ENABLE
5163 if (types & EV_CHECK)
5164 for (i = checkcnt; i--; )
5165 cb (EV_A_ EV_CHECK, checks [i]);
5166#endif
5167
5168#if EV_SIGNAL_ENABLE
5169 if (types & EV_SIGNAL)
5170 for (i = 0; i < EV_NSIG - 1; ++i)
5171 for (wl = signals [i].head; wl; )
5172 {
5173 wn = wl->next;
5174 cb (EV_A_ EV_SIGNAL, wl);
5175 wl = wn;
5176 }
5177#endif
5178
5179#if EV_CHILD_ENABLE
5180 if (types & EV_CHILD)
5181 for (i = (EV_PID_HASHSIZE); i--; )
5182 for (wl = childs [i]; wl; )
5183 {
5184 wn = wl->next;
5185 cb (EV_A_ EV_CHILD, wl);
5186 wl = wn;
5187 }
5188#endif
5189/* EV_STAT 0x00001000 /* stat data changed */
5190/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
5191}
5192#endif
5193
2967#if EV_MULTIPLICITY 5194#if EV_MULTIPLICITY
2968 #include "ev_wrap.h" 5195 #include "ev_wrap.h"
2969#endif 5196#endif
2970 5197
2971#ifdef __cplusplus
2972}
2973#endif
2974

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