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Comparing libev/ev.c (file contents):
Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC vs.
Revision 1.513 by root, Fri Dec 20 05:20:23 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
122# ifndef EV_USE_PORT 130# ifndef EV_USE_IOURING
123# if HAVE_PORT_H && HAVE_PORT_CREATE 131# define EV_USE_IOURING EV_FEATURE_BACKENDS
124# define EV_USE_PORT 1
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
128# endif
129
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1
133# else 133# else
134# undef EV_USE_IOURING
134# define EV_USE_INOTIFY 0 135# define EV_USE_IOURING 0
135# endif
136# endif
137
138# ifndef EV_USE_EVENTFD
139# if HAVE_EVENTFD
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif
144# endif 136# endif
145 137
138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
139# ifndef EV_USE_KQUEUE
140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
141# endif
142# else
143# undef EV_USE_KQUEUE
144# define EV_USE_KQUEUE 0
146#endif 145# endif
146
147# if HAVE_PORT_H && HAVE_PORT_CREATE
148# ifndef EV_USE_PORT
149# define EV_USE_PORT EV_FEATURE_BACKENDS
150# endif
151# else
152# undef EV_USE_PORT
153# define EV_USE_PORT 0
154# endif
147 155
148#include <math.h> 156# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
157# ifndef EV_USE_INOTIFY
158# define EV_USE_INOTIFY EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_INOTIFY
162# define EV_USE_INOTIFY 0
163# endif
164
165# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
166# ifndef EV_USE_SIGNALFD
167# define EV_USE_SIGNALFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_SIGNALFD
171# define EV_USE_SIGNALFD 0
172# endif
173
174# if HAVE_EVENTFD
175# ifndef EV_USE_EVENTFD
176# define EV_USE_EVENTFD EV_FEATURE_OS
177# endif
178# else
179# undef EV_USE_EVENTFD
180# define EV_USE_EVENTFD 0
181# endif
182
183#endif
184
185/* OS X, in its infinite idiocy, actually HARDCODES
186 * a limit of 1024 into their select. Where people have brains,
187 * OS X engineers apparently have a vacuum. Or maybe they were
188 * ordered to have a vacuum, or they do anything for money.
189 * This might help. Or not.
190 * Note that this must be defined early, as other include files
191 * will rely on this define as well.
192 */
193#define _DARWIN_UNLIMITED_SELECT 1
194
149#include <stdlib.h> 195#include <stdlib.h>
196#include <string.h>
150#include <fcntl.h> 197#include <fcntl.h>
151#include <stddef.h> 198#include <stddef.h>
152 199
153#include <stdio.h> 200#include <stdio.h>
154 201
155#include <assert.h> 202#include <assert.h>
156#include <errno.h> 203#include <errno.h>
157#include <sys/types.h> 204#include <sys/types.h>
158#include <time.h> 205#include <time.h>
206#include <limits.h>
159 207
160#include <signal.h> 208#include <signal.h>
161 209
162#ifdef EV_H 210#ifdef EV_H
163# include EV_H 211# include EV_H
164#else 212#else
165# include "ev.h" 213# include "ev.h"
214#endif
215
216#if EV_NO_THREADS
217# undef EV_NO_SMP
218# define EV_NO_SMP 1
219# undef ECB_NO_THREADS
220# define ECB_NO_THREADS 1
221#endif
222#if EV_NO_SMP
223# undef EV_NO_SMP
224# define ECB_NO_SMP 1
166#endif 225#endif
167 226
168#ifndef _WIN32 227#ifndef _WIN32
169# include <sys/time.h> 228# include <sys/time.h>
170# include <sys/wait.h> 229# include <sys/wait.h>
171# include <unistd.h> 230# include <unistd.h>
172#else 231#else
173# include <io.h> 232# include <io.h>
174# define WIN32_LEAN_AND_MEAN 233# define WIN32_LEAN_AND_MEAN
234# include <winsock2.h>
175# include <windows.h> 235# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 236# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 237# define EV_SELECT_IS_WINSOCKET 1
178# endif 238# endif
239# undef EV_AVOID_STDIO
179#endif 240#endif
180 241
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 242/* this block tries to deduce configuration from header-defined symbols and defaults */
182 243
244/* try to deduce the maximum number of signals on this platform */
245#if defined EV_NSIG
246/* use what's provided */
247#elif defined NSIG
248# define EV_NSIG (NSIG)
249#elif defined _NSIG
250# define EV_NSIG (_NSIG)
251#elif defined SIGMAX
252# define EV_NSIG (SIGMAX+1)
253#elif defined SIG_MAX
254# define EV_NSIG (SIG_MAX+1)
255#elif defined _SIG_MAX
256# define EV_NSIG (_SIG_MAX+1)
257#elif defined MAXSIG
258# define EV_NSIG (MAXSIG+1)
259#elif defined MAX_SIG
260# define EV_NSIG (MAX_SIG+1)
261#elif defined SIGARRAYSIZE
262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
263#elif defined _sys_nsig
264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
265#else
266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
267#endif
268
269#ifndef EV_USE_FLOOR
270# define EV_USE_FLOOR 0
271#endif
272
183#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 276# else
187# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
188# endif 278# endif
189#endif 279#endif
190 280
281#if !(_POSIX_TIMERS > 0)
282# ifndef EV_USE_MONOTONIC
283# define EV_USE_MONOTONIC 0
284# endif
285# ifndef EV_USE_REALTIME
286# define EV_USE_REALTIME 0
287# endif
288#endif
289
191#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 292# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 293# else
195# define EV_USE_MONOTONIC 0 294# define EV_USE_MONOTONIC 0
196# endif 295# endif
197#endif 296#endif
198 297
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 299# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 300#endif
202 301
203#ifndef EV_USE_NANOSLEEP 302#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 303# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 304# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 305# else
207# define EV_USE_NANOSLEEP 0 306# define EV_USE_NANOSLEEP 0
208# endif 307# endif
209#endif 308#endif
210 309
211#ifndef EV_USE_SELECT 310#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 311# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 312#endif
214 313
215#ifndef EV_USE_POLL 314#ifndef EV_USE_POLL
216# ifdef _WIN32 315# ifdef _WIN32
217# define EV_USE_POLL 0 316# define EV_USE_POLL 0
218# else 317# else
219# define EV_USE_POLL 1 318# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 319# endif
221#endif 320#endif
222 321
223#ifndef EV_USE_EPOLL 322#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 323# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 324# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 325# else
227# define EV_USE_EPOLL 0 326# define EV_USE_EPOLL 0
228# endif 327# endif
229#endif 328#endif
230 329
… …
234 333
235#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
236# define EV_USE_PORT 0 335# define EV_USE_PORT 0
237#endif 336#endif
238 337
338#ifndef EV_USE_LINUXAIO
339# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
340# define EV_USE_LINUXAIO 1
341# else
342# define EV_USE_LINUXAIO 0
343# endif
344#endif
345
346#ifndef EV_USE_IOURING
347# if __linux /* later checks might disable again */
348# define EV_USE_IOURING 1
349# else
350# define EV_USE_IOURING 0
351# endif
352#endif
353
239#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 356# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 357# else
243# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
244# endif 359# endif
245#endif 360#endif
246 361
247#ifndef EV_PID_HASHSIZE 362#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 363# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 364#endif
254 365
255#ifndef EV_INOTIFY_HASHSIZE 366#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 367# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 368#endif
262 369
263#ifndef EV_USE_EVENTFD 370#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 371# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 372# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 373# else
267# define EV_USE_EVENTFD 0 374# define EV_USE_EVENTFD 0
375# endif
376#endif
377
378#ifndef EV_USE_SIGNALFD
379# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
380# define EV_USE_SIGNALFD EV_FEATURE_OS
381# else
382# define EV_USE_SIGNALFD 0
268# endif 383# endif
269#endif 384#endif
270 385
271#if 0 /* debugging */ 386#if 0 /* debugging */
272# define EV_VERIFY 3 387# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 388# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 389# define EV_HEAP_CACHE_AT 1
275#endif 390#endif
276 391
277#ifndef EV_VERIFY 392#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 393# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 394#endif
280 395
281#ifndef EV_USE_4HEAP 396#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 397# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 398#endif
284 399
285#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 401# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
402#endif
403
404#ifdef __ANDROID__
405/* supposedly, android doesn't typedef fd_mask */
406# undef EV_USE_SELECT
407# define EV_USE_SELECT 0
408/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
409# undef EV_USE_CLOCK_SYSCALL
410# define EV_USE_CLOCK_SYSCALL 0
411#endif
412
413/* aix's poll.h seems to cause lots of trouble */
414#ifdef _AIX
415/* AIX has a completely broken poll.h header */
416# undef EV_USE_POLL
417# define EV_USE_POLL 0
287#endif 418#endif
288 419
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 420/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 421/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 423# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
297# else 429# else
298# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
300# endif 432# endif
301#endif 433#endif
… …
315#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
316# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
318#endif 450#endif
319 451
452#if __linux && EV_USE_IOURING
453# include <linux/version.h>
454# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
455# undef EV_USE_IOURING
456# define EV_USE_IOURING 0
457# endif
458#endif
459
320#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 461/* hp-ux has it in sys/time.h, which we unconditionally include above */
462# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 463# include <sys/select.h>
323# endif 464# endif
324#endif 465#endif
325 466
467#if EV_USE_LINUXAIO
468# include <sys/syscall.h>
469# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
470# define EV_NEED_SYSCALL 1
471# else
472# undef EV_USE_LINUXAIO
473# define EV_USE_LINUXAIO 0
474# endif
475#endif
476
477#if EV_USE_IOURING
478# include <sys/syscall.h>
479# if !SYS_io_uring_setup && __linux && !__alpha
480# define SYS_io_uring_setup 425
481# define SYS_io_uring_enter 426
482# define SYS_io_uring_wregister 427
483# endif
484# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
485# define EV_NEED_SYSCALL 1
486# else
487# undef EV_USE_IOURING
488# define EV_USE_IOURING 0
489# endif
490#endif
491
326#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 493# include <sys/statfs.h>
329# include <sys/inotify.h> 494# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 495/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 496# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 497# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 498# define EV_USE_INOTIFY 0
334# endif 499# endif
335#endif 500#endif
336 501
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 502#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 503/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 504# include <stdint.h>
344# ifdef __cplusplus 505# ifndef EFD_NONBLOCK
345extern "C" { 506# define EFD_NONBLOCK O_NONBLOCK
346# endif 507# endif
347int eventfd (unsigned int initval, int flags); 508# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 509# ifdef O_CLOEXEC
349} 510# define EFD_CLOEXEC O_CLOEXEC
511# else
512# define EFD_CLOEXEC 02000000
513# endif
350# endif 514# endif
515EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
516#endif
517
518#if EV_USE_SIGNALFD
519/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
520# include <stdint.h>
521# ifndef SFD_NONBLOCK
522# define SFD_NONBLOCK O_NONBLOCK
351#endif 523# endif
524# ifndef SFD_CLOEXEC
525# ifdef O_CLOEXEC
526# define SFD_CLOEXEC O_CLOEXEC
527# else
528# define SFD_CLOEXEC 02000000
529# endif
530# endif
531EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
352 532
353/**/ 533struct signalfd_siginfo
534{
535 uint32_t ssi_signo;
536 char pad[128 - sizeof (uint32_t)];
537};
538#endif
539
540/*****************************************************************************/
354 541
355#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 544#else
358# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
359#endif 546#endif
360 547
361/* 548/*
362 * This is used to avoid floating point rounding problems. 549 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 550 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 551 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 552#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
553/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 554
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 555#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 556#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 557
558/* find a portable timestamp that is "always" in the future but fits into time_t.
559 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
560 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
561#define EV_TSTAMP_HUGE \
562 (sizeof (time_t) >= 8 ? 10000000000000. \
563 : 0 < (time_t)4294967295 ? 4294967295. \
564 : 2147483647.) \
565
566#ifndef EV_TS_CONST
567# define EV_TS_CONST(nv) nv
568# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
569# define EV_TS_FROM_USEC(us) us * 1e-6
570# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
571# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
572# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
573# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
574#endif
575
576/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
577/* ECB.H BEGIN */
578/*
579 * libecb - http://software.schmorp.de/pkg/libecb
580 *
581 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
582 * Copyright (©) 2011 Emanuele Giaquinta
583 * All rights reserved.
584 *
585 * Redistribution and use in source and binary forms, with or without modifica-
586 * tion, are permitted provided that the following conditions are met:
587 *
588 * 1. Redistributions of source code must retain the above copyright notice,
589 * this list of conditions and the following disclaimer.
590 *
591 * 2. Redistributions in binary form must reproduce the above copyright
592 * notice, this list of conditions and the following disclaimer in the
593 * documentation and/or other materials provided with the distribution.
594 *
595 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
596 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
597 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
598 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
599 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
600 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
601 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
602 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
603 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
604 * OF THE POSSIBILITY OF SUCH DAMAGE.
605 *
606 * Alternatively, the contents of this file may be used under the terms of
607 * the GNU General Public License ("GPL") version 2 or any later version,
608 * in which case the provisions of the GPL are applicable instead of
609 * the above. If you wish to allow the use of your version of this file
610 * only under the terms of the GPL and not to allow others to use your
611 * version of this file under the BSD license, indicate your decision
612 * by deleting the provisions above and replace them with the notice
613 * and other provisions required by the GPL. If you do not delete the
614 * provisions above, a recipient may use your version of this file under
615 * either the BSD or the GPL.
616 */
617
618#ifndef ECB_H
619#define ECB_H
620
621/* 16 bits major, 16 bits minor */
622#define ECB_VERSION 0x00010006
623
624#ifdef _WIN32
625 typedef signed char int8_t;
626 typedef unsigned char uint8_t;
627 typedef signed short int16_t;
628 typedef unsigned short uint16_t;
629 typedef signed int int32_t;
630 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 631 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 632 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 633 typedef unsigned long long uint64_t;
634 #else /* _MSC_VER || __BORLANDC__ */
635 typedef signed __int64 int64_t;
636 typedef unsigned __int64 uint64_t;
637 #endif
638 #ifdef _WIN64
639 #define ECB_PTRSIZE 8
640 typedef uint64_t uintptr_t;
641 typedef int64_t intptr_t;
642 #else
643 #define ECB_PTRSIZE 4
644 typedef uint32_t uintptr_t;
645 typedef int32_t intptr_t;
646 #endif
378#else 647#else
379# define expect(expr,value) (expr) 648 #include <inttypes.h>
380# define noinline 649 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 650 #define ECB_PTRSIZE 8
382# define inline 651 #else
652 #define ECB_PTRSIZE 4
653 #endif
383# endif 654#endif
655
656#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
657#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
658
659/* work around x32 idiocy by defining proper macros */
660#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
661 #if _ILP32
662 #define ECB_AMD64_X32 1
663 #else
664 #define ECB_AMD64 1
384#endif 665 #endif
666#endif
385 667
386#define expect_false(expr) expect ((expr) != 0, 0) 668/* many compilers define _GNUC_ to some versions but then only implement
387#define expect_true(expr) expect ((expr) != 0, 1) 669 * what their idiot authors think are the "more important" extensions,
388#define inline_size static inline 670 * causing enormous grief in return for some better fake benchmark numbers.
389 671 * or so.
390#if EV_MINIMAL 672 * we try to detect these and simply assume they are not gcc - if they have
391# define inline_speed static noinline 673 * an issue with that they should have done it right in the first place.
674 */
675#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
676 #define ECB_GCC_VERSION(major,minor) 0
392#else 677#else
678 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
679#endif
680
681#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
682
683#if __clang__ && defined __has_builtin
684 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
685#else
686 #define ECB_CLANG_BUILTIN(x) 0
687#endif
688
689#if __clang__ && defined __has_extension
690 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
691#else
692 #define ECB_CLANG_EXTENSION(x) 0
693#endif
694
695#define ECB_CPP (__cplusplus+0)
696#define ECB_CPP11 (__cplusplus >= 201103L)
697#define ECB_CPP14 (__cplusplus >= 201402L)
698#define ECB_CPP17 (__cplusplus >= 201703L)
699
700#if ECB_CPP
701 #define ECB_C 0
702 #define ECB_STDC_VERSION 0
703#else
704 #define ECB_C 1
705 #define ECB_STDC_VERSION __STDC_VERSION__
706#endif
707
708#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
709#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
710#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
711
712#if ECB_CPP
713 #define ECB_EXTERN_C extern "C"
714 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
715 #define ECB_EXTERN_C_END }
716#else
717 #define ECB_EXTERN_C extern
718 #define ECB_EXTERN_C_BEG
719 #define ECB_EXTERN_C_END
720#endif
721
722/*****************************************************************************/
723
724/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
725/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
726
727#if ECB_NO_THREADS
728 #define ECB_NO_SMP 1
729#endif
730
731#if ECB_NO_SMP
732 #define ECB_MEMORY_FENCE do { } while (0)
733#endif
734
735/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
736#if __xlC__ && ECB_CPP
737 #include <builtins.h>
738#endif
739
740#if 1400 <= _MSC_VER
741 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
742#endif
743
744#ifndef ECB_MEMORY_FENCE
745 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
746 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
747 #if __i386 || __i386__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
749 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
750 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
751 #elif ECB_GCC_AMD64
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
755 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
757 #elif defined __ARM_ARCH_2__ \
758 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
759 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
760 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
761 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
762 || defined __ARM_ARCH_5TEJ__
763 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
764 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
765 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
766 || defined __ARM_ARCH_6T2__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
768 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
769 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
770 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
771 #elif __aarch64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
773 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
775 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
776 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
777 #elif defined __s390__ || defined __s390x__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
779 #elif defined __mips__
780 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
781 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
782 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
783 #elif defined __alpha__
784 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
785 #elif defined __hppa__
786 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
787 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
788 #elif defined __ia64__
789 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
790 #elif defined __m68k__
791 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
792 #elif defined __m88k__
793 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
794 #elif defined __sh__
795 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
796 #endif
797 #endif
798#endif
799
800#ifndef ECB_MEMORY_FENCE
801 #if ECB_GCC_VERSION(4,7)
802 /* see comment below (stdatomic.h) about the C11 memory model. */
803 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
804 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
805 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
806 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
807
808 #elif ECB_CLANG_EXTENSION(c_atomic)
809 /* see comment below (stdatomic.h) about the C11 memory model. */
810 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
811 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
812 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
813 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
814
815 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
816 #define ECB_MEMORY_FENCE __sync_synchronize ()
817 #elif _MSC_VER >= 1500 /* VC++ 2008 */
818 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
819 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
820 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
821 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
822 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
823 #elif _MSC_VER >= 1400 /* VC++ 2005 */
824 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
825 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
826 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
827 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
828 #elif defined _WIN32
829 #include <WinNT.h>
830 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
831 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
832 #include <mbarrier.h>
833 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
834 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
835 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
836 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
837 #elif __xlC__
838 #define ECB_MEMORY_FENCE __sync ()
839 #endif
840#endif
841
842#ifndef ECB_MEMORY_FENCE
843 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
844 /* we assume that these memory fences work on all variables/all memory accesses, */
845 /* not just C11 atomics and atomic accesses */
846 #include <stdatomic.h>
847 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
848 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
849 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
850 #endif
851#endif
852
853#ifndef ECB_MEMORY_FENCE
854 #if !ECB_AVOID_PTHREADS
855 /*
856 * if you get undefined symbol references to pthread_mutex_lock,
857 * or failure to find pthread.h, then you should implement
858 * the ECB_MEMORY_FENCE operations for your cpu/compiler
859 * OR provide pthread.h and link against the posix thread library
860 * of your system.
861 */
862 #include <pthread.h>
863 #define ECB_NEEDS_PTHREADS 1
864 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
865
866 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
867 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
868 #endif
869#endif
870
871#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
872 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
873#endif
874
875#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
876 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
877#endif
878
879#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
880 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
881#endif
882
883/*****************************************************************************/
884
885#if ECB_CPP
886 #define ecb_inline static inline
887#elif ECB_GCC_VERSION(2,5)
888 #define ecb_inline static __inline__
889#elif ECB_C99
890 #define ecb_inline static inline
891#else
892 #define ecb_inline static
893#endif
894
895#if ECB_GCC_VERSION(3,3)
896 #define ecb_restrict __restrict__
897#elif ECB_C99
898 #define ecb_restrict restrict
899#else
900 #define ecb_restrict
901#endif
902
903typedef int ecb_bool;
904
905#define ECB_CONCAT_(a, b) a ## b
906#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
907#define ECB_STRINGIFY_(a) # a
908#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
909#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
910
911#define ecb_function_ ecb_inline
912
913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
914 #define ecb_attribute(attrlist) __attribute__ (attrlist)
915#else
916 #define ecb_attribute(attrlist)
917#endif
918
919#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
920 #define ecb_is_constant(expr) __builtin_constant_p (expr)
921#else
922 /* possible C11 impl for integral types
923 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
924 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
925
926 #define ecb_is_constant(expr) 0
927#endif
928
929#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
930 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
931#else
932 #define ecb_expect(expr,value) (expr)
933#endif
934
935#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
936 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
937#else
938 #define ecb_prefetch(addr,rw,locality)
939#endif
940
941/* no emulation for ecb_decltype */
942#if ECB_CPP11
943 // older implementations might have problems with decltype(x)::type, work around it
944 template<class T> struct ecb_decltype_t { typedef T type; };
945 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
946#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
947 #define ecb_decltype(x) __typeof__ (x)
948#endif
949
950#if _MSC_VER >= 1300
951 #define ecb_deprecated __declspec (deprecated)
952#else
953 #define ecb_deprecated ecb_attribute ((__deprecated__))
954#endif
955
956#if _MSC_VER >= 1500
957 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
958#elif ECB_GCC_VERSION(4,5)
959 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
960#else
961 #define ecb_deprecated_message(msg) ecb_deprecated
962#endif
963
964#if _MSC_VER >= 1400
965 #define ecb_noinline __declspec (noinline)
966#else
967 #define ecb_noinline ecb_attribute ((__noinline__))
968#endif
969
970#define ecb_unused ecb_attribute ((__unused__))
971#define ecb_const ecb_attribute ((__const__))
972#define ecb_pure ecb_attribute ((__pure__))
973
974#if ECB_C11 || __IBMC_NORETURN
975 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
976 #define ecb_noreturn _Noreturn
977#elif ECB_CPP11
978 #define ecb_noreturn [[noreturn]]
979#elif _MSC_VER >= 1200
980 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
981 #define ecb_noreturn __declspec (noreturn)
982#else
983 #define ecb_noreturn ecb_attribute ((__noreturn__))
984#endif
985
986#if ECB_GCC_VERSION(4,3)
987 #define ecb_artificial ecb_attribute ((__artificial__))
988 #define ecb_hot ecb_attribute ((__hot__))
989 #define ecb_cold ecb_attribute ((__cold__))
990#else
991 #define ecb_artificial
992 #define ecb_hot
993 #define ecb_cold
994#endif
995
996/* put around conditional expressions if you are very sure that the */
997/* expression is mostly true or mostly false. note that these return */
998/* booleans, not the expression. */
999#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1000#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1001/* for compatibility to the rest of the world */
1002#define ecb_likely(expr) ecb_expect_true (expr)
1003#define ecb_unlikely(expr) ecb_expect_false (expr)
1004
1005/* count trailing zero bits and count # of one bits */
1006#if ECB_GCC_VERSION(3,4) \
1007 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1008 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1009 && ECB_CLANG_BUILTIN(__builtin_popcount))
1010 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1011 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1012 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1013 #define ecb_ctz32(x) __builtin_ctz (x)
1014 #define ecb_ctz64(x) __builtin_ctzll (x)
1015 #define ecb_popcount32(x) __builtin_popcount (x)
1016 /* no popcountll */
1017#else
1018 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1019 ecb_function_ ecb_const int
1020 ecb_ctz32 (uint32_t x)
1021 {
1022#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1023 unsigned long r;
1024 _BitScanForward (&r, x);
1025 return (int)r;
1026#else
1027 int r = 0;
1028
1029 x &= ~x + 1; /* this isolates the lowest bit */
1030
1031#if ECB_branchless_on_i386
1032 r += !!(x & 0xaaaaaaaa) << 0;
1033 r += !!(x & 0xcccccccc) << 1;
1034 r += !!(x & 0xf0f0f0f0) << 2;
1035 r += !!(x & 0xff00ff00) << 3;
1036 r += !!(x & 0xffff0000) << 4;
1037#else
1038 if (x & 0xaaaaaaaa) r += 1;
1039 if (x & 0xcccccccc) r += 2;
1040 if (x & 0xf0f0f0f0) r += 4;
1041 if (x & 0xff00ff00) r += 8;
1042 if (x & 0xffff0000) r += 16;
1043#endif
1044
1045 return r;
1046#endif
1047 }
1048
1049 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1050 ecb_function_ ecb_const int
1051 ecb_ctz64 (uint64_t x)
1052 {
1053#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1054 unsigned long r;
1055 _BitScanForward64 (&r, x);
1056 return (int)r;
1057#else
1058 int shift = x & 0xffffffff ? 0 : 32;
1059 return ecb_ctz32 (x >> shift) + shift;
1060#endif
1061 }
1062
1063 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1064 ecb_function_ ecb_const int
1065 ecb_popcount32 (uint32_t x)
1066 {
1067 x -= (x >> 1) & 0x55555555;
1068 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1069 x = ((x >> 4) + x) & 0x0f0f0f0f;
1070 x *= 0x01010101;
1071
1072 return x >> 24;
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1076 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 16) { x >>= 16; r += 16; }
1086 if (x >> 8) { x >>= 8; r += 8; }
1087 if (x >> 4) { x >>= 4; r += 4; }
1088 if (x >> 2) { x >>= 2; r += 2; }
1089 if (x >> 1) { r += 1; }
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1096 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1097 {
1098#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1099 unsigned long r;
1100 _BitScanReverse64 (&r, x);
1101 return (int)r;
1102#else
1103 int r = 0;
1104
1105 if (x >> 32) { x >>= 32; r += 32; }
1106
1107 return r + ecb_ld32 (x);
1108#endif
1109 }
1110#endif
1111
1112ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1113ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1114ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1115ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1116
1117ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1118ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1119{
1120 return ( (x * 0x0802U & 0x22110U)
1121 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1122}
1123
1124ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1125ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1126{
1127 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1128 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1129 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1130 x = ( x >> 8 ) | ( x << 8);
1131
1132 return x;
1133}
1134
1135ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1136ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1137{
1138 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1139 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1140 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1141 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1142 x = ( x >> 16 ) | ( x << 16);
1143
1144 return x;
1145}
1146
1147/* popcount64 is only available on 64 bit cpus as gcc builtin */
1148/* so for this version we are lazy */
1149ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1150ecb_function_ ecb_const int
1151ecb_popcount64 (uint64_t x)
1152{
1153 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1154}
1155
1156ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1157ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1158ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1159ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1160ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1161ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1162ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1163ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1164
1165ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1166ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1167ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1168ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1169ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1170ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1171ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1172ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1173
1174#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1175 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1176 #define ecb_bswap16(x) __builtin_bswap16 (x)
1177 #else
1178 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1179 #endif
1180 #define ecb_bswap32(x) __builtin_bswap32 (x)
1181 #define ecb_bswap64(x) __builtin_bswap64 (x)
1182#elif _MSC_VER
1183 #include <stdlib.h>
1184 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1185 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1186 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1187#else
1188 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1189 ecb_function_ ecb_const uint16_t
1190 ecb_bswap16 (uint16_t x)
1191 {
1192 return ecb_rotl16 (x, 8);
1193 }
1194
1195 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1196 ecb_function_ ecb_const uint32_t
1197 ecb_bswap32 (uint32_t x)
1198 {
1199 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1200 }
1201
1202 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1203 ecb_function_ ecb_const uint64_t
1204 ecb_bswap64 (uint64_t x)
1205 {
1206 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1207 }
1208#endif
1209
1210#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1211 #define ecb_unreachable() __builtin_unreachable ()
1212#else
1213 /* this seems to work fine, but gcc always emits a warning for it :/ */
1214 ecb_inline ecb_noreturn void ecb_unreachable (void);
1215 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1216#endif
1217
1218/* try to tell the compiler that some condition is definitely true */
1219#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1220
1221ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1222ecb_inline ecb_const uint32_t
1223ecb_byteorder_helper (void)
1224{
1225 /* the union code still generates code under pressure in gcc, */
1226 /* but less than using pointers, and always seems to */
1227 /* successfully return a constant. */
1228 /* the reason why we have this horrible preprocessor mess */
1229 /* is to avoid it in all cases, at least on common architectures */
1230 /* or when using a recent enough gcc version (>= 4.6) */
1231#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1232 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1233 #define ECB_LITTLE_ENDIAN 1
1234 return 0x44332211;
1235#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1236 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1237 #define ECB_BIG_ENDIAN 1
1238 return 0x11223344;
1239#else
1240 union
1241 {
1242 uint8_t c[4];
1243 uint32_t u;
1244 } u = { 0x11, 0x22, 0x33, 0x44 };
1245 return u.u;
1246#endif
1247}
1248
1249ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1250ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1251ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1252ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1253
1254#if ECB_GCC_VERSION(3,0) || ECB_C99
1255 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1256#else
1257 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1258#endif
1259
1260#if ECB_CPP
1261 template<typename T>
1262 static inline T ecb_div_rd (T val, T div)
1263 {
1264 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1265 }
1266 template<typename T>
1267 static inline T ecb_div_ru (T val, T div)
1268 {
1269 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1270 }
1271#else
1272 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1273 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1274#endif
1275
1276#if ecb_cplusplus_does_not_suck
1277 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1278 template<typename T, int N>
1279 static inline int ecb_array_length (const T (&arr)[N])
1280 {
1281 return N;
1282 }
1283#else
1284 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1285#endif
1286
1287ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1288ecb_function_ ecb_const uint32_t
1289ecb_binary16_to_binary32 (uint32_t x)
1290{
1291 unsigned int s = (x & 0x8000) << (31 - 15);
1292 int e = (x >> 10) & 0x001f;
1293 unsigned int m = x & 0x03ff;
1294
1295 if (ecb_expect_false (e == 31))
1296 /* infinity or NaN */
1297 e = 255 - (127 - 15);
1298 else if (ecb_expect_false (!e))
1299 {
1300 if (ecb_expect_true (!m))
1301 /* zero, handled by code below by forcing e to 0 */
1302 e = 0 - (127 - 15);
1303 else
1304 {
1305 /* subnormal, renormalise */
1306 unsigned int s = 10 - ecb_ld32 (m);
1307
1308 m = (m << s) & 0x3ff; /* mask implicit bit */
1309 e -= s - 1;
1310 }
1311 }
1312
1313 /* e and m now are normalised, or zero, (or inf or nan) */
1314 e += 127 - 15;
1315
1316 return s | (e << 23) | (m << (23 - 10));
1317}
1318
1319ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1320ecb_function_ ecb_const uint16_t
1321ecb_binary32_to_binary16 (uint32_t x)
1322{
1323 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1324 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1325 unsigned int m = x & 0x007fffff;
1326
1327 x &= 0x7fffffff;
1328
1329 /* if it's within range of binary16 normals, use fast path */
1330 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1331 {
1332 /* mantissa round-to-even */
1333 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1334
1335 /* handle overflow */
1336 if (ecb_expect_false (m >= 0x00800000))
1337 {
1338 m >>= 1;
1339 e += 1;
1340 }
1341
1342 return s | (e << 10) | (m >> (23 - 10));
1343 }
1344
1345 /* handle large numbers and infinity */
1346 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1347 return s | 0x7c00;
1348
1349 /* handle zero, subnormals and small numbers */
1350 if (ecb_expect_true (x < 0x38800000))
1351 {
1352 /* zero */
1353 if (ecb_expect_true (!x))
1354 return s;
1355
1356 /* handle subnormals */
1357
1358 /* too small, will be zero */
1359 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1360 return s;
1361
1362 m |= 0x00800000; /* make implicit bit explicit */
1363
1364 /* very tricky - we need to round to the nearest e (+10) bit value */
1365 {
1366 unsigned int bits = 14 - e;
1367 unsigned int half = (1 << (bits - 1)) - 1;
1368 unsigned int even = (m >> bits) & 1;
1369
1370 /* if this overflows, we will end up with a normalised number */
1371 m = (m + half + even) >> bits;
1372 }
1373
1374 return s | m;
1375 }
1376
1377 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1378 m >>= 13;
1379
1380 return s | 0x7c00 | m | !m;
1381}
1382
1383/*******************************************************************************/
1384/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1385
1386/* basically, everything uses "ieee pure-endian" floating point numbers */
1387/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1388#if 0 \
1389 || __i386 || __i386__ \
1390 || ECB_GCC_AMD64 \
1391 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1392 || defined __s390__ || defined __s390x__ \
1393 || defined __mips__ \
1394 || defined __alpha__ \
1395 || defined __hppa__ \
1396 || defined __ia64__ \
1397 || defined __m68k__ \
1398 || defined __m88k__ \
1399 || defined __sh__ \
1400 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1401 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1402 || defined __aarch64__
1403 #define ECB_STDFP 1
1404 #include <string.h> /* for memcpy */
1405#else
1406 #define ECB_STDFP 0
1407#endif
1408
1409#ifndef ECB_NO_LIBM
1410
1411 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1412
1413 /* only the oldest of old doesn't have this one. solaris. */
1414 #ifdef INFINITY
1415 #define ECB_INFINITY INFINITY
1416 #else
1417 #define ECB_INFINITY HUGE_VAL
1418 #endif
1419
1420 #ifdef NAN
1421 #define ECB_NAN NAN
1422 #else
1423 #define ECB_NAN ECB_INFINITY
1424 #endif
1425
1426 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1427 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1428 #define ecb_frexpf(x,e) frexpf ((x), (e))
1429 #else
1430 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1431 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1432 #endif
1433
1434 /* convert a float to ieee single/binary32 */
1435 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1436 ecb_function_ ecb_const uint32_t
1437 ecb_float_to_binary32 (float x)
1438 {
1439 uint32_t r;
1440
1441 #if ECB_STDFP
1442 memcpy (&r, &x, 4);
1443 #else
1444 /* slow emulation, works for anything but -0 */
1445 uint32_t m;
1446 int e;
1447
1448 if (x == 0e0f ) return 0x00000000U;
1449 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1450 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1451 if (x != x ) return 0x7fbfffffU;
1452
1453 m = ecb_frexpf (x, &e) * 0x1000000U;
1454
1455 r = m & 0x80000000U;
1456
1457 if (r)
1458 m = -m;
1459
1460 if (e <= -126)
1461 {
1462 m &= 0xffffffU;
1463 m >>= (-125 - e);
1464 e = -126;
1465 }
1466
1467 r |= (e + 126) << 23;
1468 r |= m & 0x7fffffU;
1469 #endif
1470
1471 return r;
1472 }
1473
1474 /* converts an ieee single/binary32 to a float */
1475 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1476 ecb_function_ ecb_const float
1477 ecb_binary32_to_float (uint32_t x)
1478 {
1479 float r;
1480
1481 #if ECB_STDFP
1482 memcpy (&r, &x, 4);
1483 #else
1484 /* emulation, only works for normals and subnormals and +0 */
1485 int neg = x >> 31;
1486 int e = (x >> 23) & 0xffU;
1487
1488 x &= 0x7fffffU;
1489
1490 if (e)
1491 x |= 0x800000U;
1492 else
1493 e = 1;
1494
1495 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1496 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1497
1498 r = neg ? -r : r;
1499 #endif
1500
1501 return r;
1502 }
1503
1504 /* convert a double to ieee double/binary64 */
1505 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1506 ecb_function_ ecb_const uint64_t
1507 ecb_double_to_binary64 (double x)
1508 {
1509 uint64_t r;
1510
1511 #if ECB_STDFP
1512 memcpy (&r, &x, 8);
1513 #else
1514 /* slow emulation, works for anything but -0 */
1515 uint64_t m;
1516 int e;
1517
1518 if (x == 0e0 ) return 0x0000000000000000U;
1519 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1520 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1521 if (x != x ) return 0X7ff7ffffffffffffU;
1522
1523 m = frexp (x, &e) * 0x20000000000000U;
1524
1525 r = m & 0x8000000000000000;;
1526
1527 if (r)
1528 m = -m;
1529
1530 if (e <= -1022)
1531 {
1532 m &= 0x1fffffffffffffU;
1533 m >>= (-1021 - e);
1534 e = -1022;
1535 }
1536
1537 r |= ((uint64_t)(e + 1022)) << 52;
1538 r |= m & 0xfffffffffffffU;
1539 #endif
1540
1541 return r;
1542 }
1543
1544 /* converts an ieee double/binary64 to a double */
1545 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1546 ecb_function_ ecb_const double
1547 ecb_binary64_to_double (uint64_t x)
1548 {
1549 double r;
1550
1551 #if ECB_STDFP
1552 memcpy (&r, &x, 8);
1553 #else
1554 /* emulation, only works for normals and subnormals and +0 */
1555 int neg = x >> 63;
1556 int e = (x >> 52) & 0x7ffU;
1557
1558 x &= 0xfffffffffffffU;
1559
1560 if (e)
1561 x |= 0x10000000000000U;
1562 else
1563 e = 1;
1564
1565 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1566 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1567
1568 r = neg ? -r : r;
1569 #endif
1570
1571 return r;
1572 }
1573
1574 /* convert a float to ieee half/binary16 */
1575 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1576 ecb_function_ ecb_const uint16_t
1577 ecb_float_to_binary16 (float x)
1578 {
1579 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1580 }
1581
1582 /* convert an ieee half/binary16 to float */
1583 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1584 ecb_function_ ecb_const float
1585 ecb_binary16_to_float (uint16_t x)
1586 {
1587 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1588 }
1589
1590#endif
1591
1592#endif
1593
1594/* ECB.H END */
1595
1596#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1597/* if your architecture doesn't need memory fences, e.g. because it is
1598 * single-cpu/core, or if you use libev in a project that doesn't use libev
1599 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1600 * libev, in which cases the memory fences become nops.
1601 * alternatively, you can remove this #error and link against libpthread,
1602 * which will then provide the memory fences.
1603 */
1604# error "memory fences not defined for your architecture, please report"
1605#endif
1606
1607#ifndef ECB_MEMORY_FENCE
1608# define ECB_MEMORY_FENCE do { } while (0)
1609# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1610# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1611#endif
1612
1613#define inline_size ecb_inline
1614
1615#if EV_FEATURE_CODE
393# define inline_speed static inline 1616# define inline_speed ecb_inline
1617#else
1618# define inline_speed ecb_noinline static
394#endif 1619#endif
395 1620
1621/*****************************************************************************/
1622/* raw syscall wrappers */
1623
1624#if EV_NEED_SYSCALL
1625
1626#include <sys/syscall.h>
1627
1628/*
1629 * define some syscall wrappers for common architectures
1630 * this is mostly for nice looks during debugging, not performance.
1631 * our syscalls return < 0, not == -1, on error. which is good
1632 * enough for linux aio.
1633 * TODO: arm is also common nowadays, maybe even mips and x86
1634 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1635 */
1636#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1637 /* the costly errno access probably kills this for size optimisation */
1638
1639 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1640 ({ \
1641 long res; \
1642 register unsigned long r6 __asm__ ("r9" ); \
1643 register unsigned long r5 __asm__ ("r8" ); \
1644 register unsigned long r4 __asm__ ("r10"); \
1645 register unsigned long r3 __asm__ ("rdx"); \
1646 register unsigned long r2 __asm__ ("rsi"); \
1647 register unsigned long r1 __asm__ ("rdi"); \
1648 if (narg >= 6) r6 = (unsigned long)(arg6); \
1649 if (narg >= 5) r5 = (unsigned long)(arg5); \
1650 if (narg >= 4) r4 = (unsigned long)(arg4); \
1651 if (narg >= 3) r3 = (unsigned long)(arg3); \
1652 if (narg >= 2) r2 = (unsigned long)(arg2); \
1653 if (narg >= 1) r1 = (unsigned long)(arg1); \
1654 __asm__ __volatile__ ( \
1655 "syscall\n\t" \
1656 : "=a" (res) \
1657 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1658 : "cc", "r11", "cx", "memory"); \
1659 errno = -res; \
1660 res; \
1661 })
1662
1663#endif
1664
1665#ifdef ev_syscall
1666 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1667 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1668 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1669 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1670 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1671 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1672 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1673#else
1674 #define ev_syscall0(nr) syscall (nr)
1675 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1676 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1677 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1678 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1679 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1680 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1681#endif
1682
1683#endif
1684
1685/*****************************************************************************/
1686
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1688
1689#if EV_MINPRI == EV_MAXPRI
1690# define ABSPRI(w) (((W)w), 0)
1691#else
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1693#endif
398 1694
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */
401 1696
402typedef ev_watcher *W; 1697typedef ev_watcher *W;
403typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
404typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
405 1700
406#define ev_active(w) ((W)(w))->active 1701#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1702#define ev_at(w) ((WT)(w))->at
408 1703
409#if EV_USE_REALTIME 1704#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1705/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 1706/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1707static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1708#endif
414 1709
415#if EV_USE_MONOTONIC 1710#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1711static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1712#endif
418 1713
1714#ifndef EV_FD_TO_WIN32_HANDLE
1715# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1716#endif
1717#ifndef EV_WIN32_HANDLE_TO_FD
1718# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1719#endif
1720#ifndef EV_WIN32_CLOSE_FD
1721# define EV_WIN32_CLOSE_FD(fd) close (fd)
1722#endif
1723
419#ifdef _WIN32 1724#ifdef _WIN32
420# include "ev_win32.c" 1725# include "ev_win32.c"
421#endif 1726#endif
422 1727
423/*****************************************************************************/ 1728/*****************************************************************************/
424 1729
1730#if EV_USE_LINUXAIO
1731# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1732#endif
1733
1734/* define a suitable floor function (only used by periodics atm) */
1735
1736#if EV_USE_FLOOR
1737# include <math.h>
1738# define ev_floor(v) floor (v)
1739#else
1740
1741#include <float.h>
1742
1743/* a floor() replacement function, should be independent of ev_tstamp type */
1744ecb_noinline
1745static ev_tstamp
1746ev_floor (ev_tstamp v)
1747{
1748 /* the choice of shift factor is not terribly important */
1749#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1750 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1751#else
1752 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1753#endif
1754
1755 /* special treatment for negative arguments */
1756 if (ecb_expect_false (v < 0.))
1757 {
1758 ev_tstamp f = -ev_floor (-v);
1759
1760 return f - (f == v ? 0 : 1);
1761 }
1762
1763 /* argument too large for an unsigned long? then reduce it */
1764 if (ecb_expect_false (v >= shift))
1765 {
1766 ev_tstamp f;
1767
1768 if (v == v - 1.)
1769 return v; /* very large numbers are assumed to be integer */
1770
1771 f = shift * ev_floor (v * (1. / shift));
1772 return f + ev_floor (v - f);
1773 }
1774
1775 /* fits into an unsigned long */
1776 return (unsigned long)v;
1777}
1778
1779#endif
1780
1781/*****************************************************************************/
1782
1783#ifdef __linux
1784# include <sys/utsname.h>
1785#endif
1786
1787ecb_noinline ecb_cold
1788static unsigned int
1789ev_linux_version (void)
1790{
1791#ifdef __linux
1792 unsigned int v = 0;
1793 struct utsname buf;
1794 int i;
1795 char *p = buf.release;
1796
1797 if (uname (&buf))
1798 return 0;
1799
1800 for (i = 3+1; --i; )
1801 {
1802 unsigned int c = 0;
1803
1804 for (;;)
1805 {
1806 if (*p >= '0' && *p <= '9')
1807 c = c * 10 + *p++ - '0';
1808 else
1809 {
1810 p += *p == '.';
1811 break;
1812 }
1813 }
1814
1815 v = (v << 8) | c;
1816 }
1817
1818 return v;
1819#else
1820 return 0;
1821#endif
1822}
1823
1824/*****************************************************************************/
1825
1826#if EV_AVOID_STDIO
1827ecb_noinline ecb_cold
1828static void
1829ev_printerr (const char *msg)
1830{
1831 write (STDERR_FILENO, msg, strlen (msg));
1832}
1833#endif
1834
425static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
426 1836
1837ecb_cold
427void 1838void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
429{ 1840{
430 syserr_cb = cb; 1841 syserr_cb = cb;
431} 1842}
432 1843
433static void noinline 1844ecb_noinline ecb_cold
1845static void
434ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
435{ 1847{
436 if (!msg) 1848 if (!msg)
437 msg = "(libev) system error"; 1849 msg = "(libev) system error";
438 1850
439 if (syserr_cb) 1851 if (syserr_cb)
440 syserr_cb (msg); 1852 syserr_cb (msg);
441 else 1853 else
442 { 1854 {
1855#if EV_AVOID_STDIO
1856 ev_printerr (msg);
1857 ev_printerr (": ");
1858 ev_printerr (strerror (errno));
1859 ev_printerr ("\n");
1860#else
443 perror (msg); 1861 perror (msg);
1862#endif
444 abort (); 1863 abort ();
445 } 1864 }
446} 1865}
447 1866
448static void * 1867static void *
449ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
450{ 1869{
451 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1871 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1872 * the single unix specification, so work around them here.
1873 * recently, also (at least) fedora and debian started breaking it,
1874 * despite documenting it otherwise.
454 */ 1875 */
455 1876
456 if (size) 1877 if (size)
457 return realloc (ptr, size); 1878 return realloc (ptr, size);
458 1879
459 free (ptr); 1880 free (ptr);
460 return 0; 1881 return 0;
461} 1882}
462 1883
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
464 1885
1886ecb_cold
465void 1887void
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
467{ 1889{
468 alloc = cb; 1890 alloc = cb;
469} 1891}
470 1892
471inline_speed void * 1893inline_speed void *
… …
473{ 1895{
474 ptr = alloc (ptr, size); 1896 ptr = alloc (ptr, size);
475 1897
476 if (!ptr && size) 1898 if (!ptr && size)
477 { 1899 {
1900#if EV_AVOID_STDIO
1901 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1902#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1903 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1904#endif
479 abort (); 1905 abort ();
480 } 1906 }
481 1907
482 return ptr; 1908 return ptr;
483} 1909}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1911#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1912#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1913
488/*****************************************************************************/ 1914/*****************************************************************************/
489 1915
1916/* set in reify when reification needed */
1917#define EV_ANFD_REIFY 1
1918
490/* file descriptor info structure */ 1919/* file descriptor info structure */
491typedef struct 1920typedef struct
492{ 1921{
493 WL head; 1922 WL head;
494 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1924 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1925 unsigned char emask; /* some backends store the actual kernel mask in here */
497 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
498#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1929#endif
501#if EV_SELECT_IS_WINSOCKET 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1931 SOCKET handle;
1932#endif
1933#if EV_USE_IOCP
1934 OVERLAPPED or, ow;
503#endif 1935#endif
504} ANFD; 1936} ANFD;
505 1937
506/* stores the pending event set for a given watcher */ 1938/* stores the pending event set for a given watcher */
507typedef struct 1939typedef struct
… …
549 #undef VAR 1981 #undef VAR
550 }; 1982 };
551 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
552 1984
553 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1986 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1987
556#else 1988#else
557 1989
558 ev_tstamp ev_rt_now; 1990 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
559 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1992 #include "ev_vars.h"
561 #undef VAR 1993 #undef VAR
562 1994
563 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
564 1996
565#endif 1997#endif
566 1998
1999#if EV_FEATURE_API
2000# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
2001# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
2003#else
2004# define EV_RELEASE_CB (void)0
2005# define EV_ACQUIRE_CB (void)0
2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
2007#endif
2008
2009#define EVBREAK_RECURSE 0x80
2010
567/*****************************************************************************/ 2011/*****************************************************************************/
568 2012
2013#ifndef EV_HAVE_EV_TIME
569ev_tstamp 2014ev_tstamp
570ev_time (void) 2015ev_time (void) EV_NOEXCEPT
571{ 2016{
572#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
573 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
574 { 2019 {
575 struct timespec ts; 2020 struct timespec ts;
576 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
577 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
578 } 2023 }
579#endif 2024#endif
580 2025
2026 {
581 struct timeval tv; 2027 struct timeval tv;
582 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
583 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
584} 2031}
2032#endif
585 2033
586inline_size ev_tstamp 2034inline_size ev_tstamp
587get_clock (void) 2035get_clock (void)
588{ 2036{
589#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
590 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
591 { 2039 {
592 struct timespec ts; 2040 struct timespec ts;
593 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
594 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
595 } 2043 }
596#endif 2044#endif
597 2045
598 return ev_time (); 2046 return ev_time ();
599} 2047}
600 2048
601#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
602ev_tstamp 2050ev_tstamp
603ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
604{ 2052{
605 return ev_rt_now; 2053 return ev_rt_now;
606} 2054}
607#endif 2055#endif
608 2056
609void 2057void
610ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
611{ 2059{
612 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
613 { 2061 {
614#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
615 struct timespec ts; 2063 struct timespec ts;
616 2064
617 ts.tv_sec = (time_t)delay; 2065 EV_TS_SET (ts, delay);
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
621#elif defined(_WIN32) 2067#elif defined _WIN32
2068 /* maybe this should round up, as ms is very low resolution */
2069 /* compared to select (µs) or nanosleep (ns) */
622 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
623#else 2071#else
624 struct timeval tv; 2072 struct timeval tv;
625 2073
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2074 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */ 2076 /* by older ones */
2077 EV_TV_SET (tv, delay);
632 select (0, 0, 0, 0, &tv); 2078 select (0, 0, 0, 0, &tv);
633#endif 2079#endif
634 } 2080 }
635} 2081}
636 2082
637/*****************************************************************************/ 2083/*****************************************************************************/
638 2084
639#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2085#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
640 2086
641/* find a suitable new size for the given array, */ 2087/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */ 2088/* hopefully by rounding to a nice-to-malloc size */
643inline_size int 2089inline_size int
644array_nextsize (int elem, int cur, int cnt) 2090array_nextsize (int elem, int cur, int cnt)
645{ 2091{
646 int ncur = cur + 1; 2092 int ncur = cur + 1;
647 2093
648 do 2094 do
649 ncur <<= 1; 2095 ncur <<= 1;
650 while (cnt > ncur); 2096 while (cnt > ncur);
651 2097
652 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2098 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 { 2100 {
655 ncur *= elem; 2101 ncur *= elem;
656 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2102 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
657 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
659 } 2105 }
660 2106
661 return ncur; 2107 return ncur;
662} 2108}
663 2109
664static noinline void * 2110ecb_noinline ecb_cold
2111static void *
665array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
666{ 2113{
667 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
669} 2116}
670 2117
2118#define array_needsize_noinit(base,offset,count)
2119
671#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
672 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
673 2122
674#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
675 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
676 { \ 2125 { \
677 int ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
678 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
679 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
680 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
681 } 2130 }
682 2131
683#if 0 2132#if 0
684#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
685 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
694 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2143 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
695 2144
696/*****************************************************************************/ 2145/*****************************************************************************/
697 2146
698/* dummy callback for pending events */ 2147/* dummy callback for pending events */
699static void noinline 2148ecb_noinline
2149static void
700pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
701{ 2151{
702} 2152}
703 2153
704void noinline 2154ecb_noinline
2155void
705ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
706{ 2157{
707 W w_ = (W)w; 2158 W w_ = (W)w;
708 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
709 2160
710 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
711 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
712 else 2163 else
713 { 2164 {
714 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
715 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
716 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
717 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
718 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
719} 2172}
720 2173
721inline_speed void 2174inline_speed void
722feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
723{ 2176{
724 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
725 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
726} 2179}
727 2180
728inline_size void 2181inline_size void
729feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
743} 2196}
744 2197
745/*****************************************************************************/ 2198/*****************************************************************************/
746 2199
747inline_speed void 2200inline_speed void
748fd_event (EV_P_ int fd, int revents) 2201fd_event_nocheck (EV_P_ int fd, int revents)
749{ 2202{
750 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
751 ev_io *w; 2204 ev_io *w;
752 2205
753 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2206 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
757 if (ev) 2210 if (ev)
758 ev_feed_event (EV_A_ (W)w, ev); 2211 ev_feed_event (EV_A_ (W)w, ev);
759 } 2212 }
760} 2213}
761 2214
762void 2215/* do not submit kernel events for fds that have reify set */
2216/* because that means they changed while we were polling for new events */
2217inline_speed void
763ev_feed_fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
2219{
2220 ANFD *anfd = anfds + fd;
2221
2222 if (ecb_expect_true (!anfd->reify))
2223 fd_event_nocheck (EV_A_ fd, revents);
2224}
2225
2226void
2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
764{ 2228{
765 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
766 fd_event (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
767} 2231}
768 2232
769/* make sure the external fd watch events are in-sync */ 2233/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */ 2234/* with the kernel/libev internal state */
771inline_size void 2235inline_size void
772fd_reify (EV_P) 2236fd_reify (EV_P)
773{ 2237{
774 int i; 2238 int i;
775 2239
2240#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2241 for (i = 0; i < fdchangecnt; ++i)
2242 {
2243 int fd = fdchanges [i];
2244 ANFD *anfd = anfds + fd;
2245
2246 if (anfd->reify & EV__IOFDSET && anfd->head)
2247 {
2248 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2249
2250 if (handle != anfd->handle)
2251 {
2252 unsigned long arg;
2253
2254 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2255
2256 /* handle changed, but fd didn't - we need to do it in two steps */
2257 backend_modify (EV_A_ fd, anfd->events, 0);
2258 anfd->events = 0;
2259 anfd->handle = handle;
2260 }
2261 }
2262 }
2263#endif
2264
776 for (i = 0; i < fdchangecnt; ++i) 2265 for (i = 0; i < fdchangecnt; ++i)
777 { 2266 {
778 int fd = fdchanges [i]; 2267 int fd = fdchanges [i];
779 ANFD *anfd = anfds + fd; 2268 ANFD *anfd = anfds + fd;
780 ev_io *w; 2269 ev_io *w;
781 2270
782 unsigned char events = 0; 2271 unsigned char o_events = anfd->events;
2272 unsigned char o_reify = anfd->reify;
783 2273
784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2274 anfd->reify = 0;
785 events |= (unsigned char)w->events;
786 2275
787#if EV_SELECT_IS_WINSOCKET 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
788 if (events)
789 { 2277 {
790 unsigned long arg; 2278 anfd->events = 0;
791 #ifdef EV_FD_TO_WIN32_HANDLE 2279
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2280 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
793 #else 2281 anfd->events |= (unsigned char)w->events;
794 anfd->handle = _get_osfhandle (fd); 2282
795 #endif 2283 if (o_events != anfd->events)
796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2284 o_reify = EV__IOFDSET; /* actually |= */
797 } 2285 }
798#endif
799 2286
800 { 2287 if (o_reify & EV__IOFDSET)
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
804 anfd->reify = 0;
805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events); 2288 backend_modify (EV_A_ fd, o_events, anfd->events);
809 }
810 } 2289 }
811 2290
812 fdchangecnt = 0; 2291 fdchangecnt = 0;
813} 2292}
814 2293
815/* something about the given fd changed */ 2294/* something about the given fd changed */
816inline_size void 2295inline_size
2296void
817fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
818{ 2298{
819 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
820 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
821 2301
822 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
823 { 2303 {
824 ++fdchangecnt; 2304 ++fdchangecnt;
825 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
826 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
827 } 2307 }
828} 2308}
829 2309
830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2310/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void 2311inline_speed ecb_cold void
832fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
833{ 2313{
834 ev_io *w; 2314 ev_io *w;
835 2315
836 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
838 ev_io_stop (EV_A_ w); 2318 ev_io_stop (EV_A_ w);
839 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2319 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
840 } 2320 }
841} 2321}
842 2322
843/* check whether the given fd is atcually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
844inline_size int 2324inline_size ecb_cold int
845fd_valid (int fd) 2325fd_valid (int fd)
846{ 2326{
847#ifdef _WIN32 2327#ifdef _WIN32
848 return _get_osfhandle (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
849#else 2329#else
850 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
851#endif 2331#endif
852} 2332}
853 2333
854/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
855static void noinline 2335ecb_noinline ecb_cold
2336static void
856fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
857{ 2338{
858 int fd; 2339 int fd;
859 2340
860 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
862 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
863 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
864} 2345}
865 2346
866/* called on ENOMEM in select/poll to kill some fds and retry */ 2347/* called on ENOMEM in select/poll to kill some fds and retry */
867static void noinline 2348ecb_noinline ecb_cold
2349static void
868fd_enomem (EV_P) 2350fd_enomem (EV_P)
869{ 2351{
870 int fd; 2352 int fd;
871 2353
872 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
873 if (anfds [fd].events) 2355 if (anfds [fd].events)
874 { 2356 {
875 fd_kill (EV_A_ fd); 2357 fd_kill (EV_A_ fd);
876 return; 2358 break;
877 } 2359 }
878} 2360}
879 2361
880/* usually called after fork if backend needs to re-arm all fds from scratch */ 2362/* usually called after fork if backend needs to re-arm all fds from scratch */
881static void noinline 2363ecb_noinline
2364static void
882fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
883{ 2366{
884 int fd; 2367 int fd;
885 2368
886 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
887 if (anfds [fd].events) 2370 if (anfds [fd].events)
888 { 2371 {
889 anfds [fd].events = 0; 2372 anfds [fd].events = 0;
890 anfds [fd].emask = 0; 2373 anfds [fd].emask = 0;
891 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2374 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
892 } 2375 }
893} 2376}
894 2377
2378/* used to prepare libev internal fd's */
2379/* this is not fork-safe */
2380inline_speed void
2381fd_intern (int fd)
2382{
2383#ifdef _WIN32
2384 unsigned long arg = 1;
2385 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2386#else
2387 fcntl (fd, F_SETFD, FD_CLOEXEC);
2388 fcntl (fd, F_SETFL, O_NONBLOCK);
2389#endif
2390}
2391
895/*****************************************************************************/ 2392/*****************************************************************************/
896 2393
897/* 2394/*
898 * the heap functions want a real array index. array index 0 uis guaranteed to not 2395 * the heap functions want a real array index. array index 0 is guaranteed to not
899 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2396 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
900 * the branching factor of the d-tree. 2397 * the branching factor of the d-tree.
901 */ 2398 */
902 2399
903/* 2400/*
… …
925 ev_tstamp minat; 2422 ev_tstamp minat;
926 ANHE *minpos; 2423 ANHE *minpos;
927 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
928 2425
929 /* find minimum child */ 2426 /* find minimum child */
930 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
931 { 2428 {
932 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
933 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2430 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
934 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2431 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
935 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2432 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
936 } 2433 }
937 else if (pos < E) 2434 else if (pos < E)
938 { 2435 {
939 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
940 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2437 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
941 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2438 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
942 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2439 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
943 } 2440 }
944 else 2441 else
945 break; 2442 break;
946 2443
947 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
955 2452
956 heap [k] = he; 2453 heap [k] = he;
957 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
958} 2455}
959 2456
960#else /* 4HEAP */ 2457#else /* not 4HEAP */
961 2458
962#define HEAP0 1 2459#define HEAP0 1
963#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
964#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
965 2462
… …
971 2468
972 for (;;) 2469 for (;;)
973 { 2470 {
974 int c = k << 1; 2471 int c = k << 1;
975 2472
976 if (c > N + HEAP0 - 1) 2473 if (c >= N + HEAP0)
977 break; 2474 break;
978 2475
979 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2476 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
980 ? 1 : 0; 2477 ? 1 : 0;
981 2478
… …
1017 2514
1018/* move an element suitably so it is in a correct place */ 2515/* move an element suitably so it is in a correct place */
1019inline_size void 2516inline_size void
1020adjustheap (ANHE *heap, int N, int k) 2517adjustheap (ANHE *heap, int N, int k)
1021{ 2518{
1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2519 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1023 upheap (heap, k); 2520 upheap (heap, k);
1024 else 2521 else
1025 downheap (heap, N, k); 2522 downheap (heap, N, k);
1026} 2523}
1027 2524
… …
1040/*****************************************************************************/ 2537/*****************************************************************************/
1041 2538
1042/* associate signal watchers to a signal signal */ 2539/* associate signal watchers to a signal signal */
1043typedef struct 2540typedef struct
1044{ 2541{
2542 EV_ATOMIC_T pending;
2543#if EV_MULTIPLICITY
2544 EV_P;
2545#endif
1045 WL head; 2546 WL head;
1046 EV_ATOMIC_T gotsig;
1047} ANSIG; 2547} ANSIG;
1048 2548
1049static ANSIG *signals; 2549static ANSIG signals [EV_NSIG - 1];
1050static int signalmax;
1051
1052static EV_ATOMIC_T gotsig;
1053 2550
1054/*****************************************************************************/ 2551/*****************************************************************************/
1055 2552
1056/* used to prepare libev internal fd's */ 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1057/* this is not fork-safe */ 2554
2555ecb_noinline ecb_cold
2556static void
2557evpipe_init (EV_P)
2558{
2559 if (!ev_is_active (&pipe_w))
2560 {
2561 int fds [2];
2562
2563# if EV_USE_EVENTFD
2564 fds [0] = -1;
2565 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2566 if (fds [1] < 0 && errno == EINVAL)
2567 fds [1] = eventfd (0, 0);
2568
2569 if (fds [1] < 0)
2570# endif
2571 {
2572 while (pipe (fds))
2573 ev_syserr ("(libev) error creating signal/async pipe");
2574
2575 fd_intern (fds [0]);
2576 }
2577
2578 evpipe [0] = fds [0];
2579
2580 if (evpipe [1] < 0)
2581 evpipe [1] = fds [1]; /* first call, set write fd */
2582 else
2583 {
2584 /* on subsequent calls, do not change evpipe [1] */
2585 /* so that evpipe_write can always rely on its value. */
2586 /* this branch does not do anything sensible on windows, */
2587 /* so must not be executed on windows */
2588
2589 dup2 (fds [1], evpipe [1]);
2590 close (fds [1]);
2591 }
2592
2593 fd_intern (evpipe [1]);
2594
2595 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2596 ev_io_start (EV_A_ &pipe_w);
2597 ev_unref (EV_A); /* watcher should not keep loop alive */
2598 }
2599}
2600
1058inline_speed void 2601inline_speed void
1059fd_intern (int fd) 2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1060{ 2603{
1061#ifdef _WIN32 2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1062 unsigned long arg = 1;
1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1064#else
1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
1066 fcntl (fd, F_SETFL, O_NONBLOCK);
1067#endif
1068}
1069 2605
1070static void noinline 2606 if (ecb_expect_true (*flag))
1071evpipe_init (EV_P) 2607 return;
1072{ 2608
1073 if (!ev_is_active (&pipe_w)) 2609 *flag = 1;
2610 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2611
2612 pipe_write_skipped = 1;
2613
2614 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2615
2616 if (pipe_write_wanted)
1074 { 2617 {
2618 int old_errno;
2619
2620 pipe_write_skipped = 0;
2621 ECB_MEMORY_FENCE_RELEASE;
2622
2623 old_errno = errno; /* save errno because write will clobber it */
2624
1075#if EV_USE_EVENTFD 2625#if EV_USE_EVENTFD
1076 if ((evfd = eventfd (0, 0)) >= 0) 2626 if (evpipe [0] < 0)
1077 { 2627 {
1078 evpipe [0] = -1; 2628 uint64_t counter = 1;
1079 fd_intern (evfd); 2629 write (evpipe [1], &counter, sizeof (uint64_t));
1080 ev_io_set (&pipe_w, evfd, EV_READ);
1081 } 2630 }
1082 else 2631 else
1083#endif 2632#endif
1084 { 2633 {
1085 while (pipe (evpipe)) 2634#ifdef _WIN32
1086 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1087 2636 DWORD sent;
1088 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1089 fd_intern (evpipe [1]); 2638 buf.len = 1;
1090 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2639 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2640#else
2641 write (evpipe [1], &(evpipe [1]), 1);
2642#endif
1091 } 2643 }
1092
1093 ev_io_start (EV_A_ &pipe_w);
1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 }
1096}
1097
1098inline_size void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{
1101 if (!*flag)
1102 {
1103 int old_errno = errno; /* save errno because write might clobber it */
1104
1105 *flag = 1;
1106
1107#if EV_USE_EVENTFD
1108 if (evfd >= 0)
1109 {
1110 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t));
1112 }
1113 else
1114#endif
1115 write (evpipe [1], &old_errno, 1);
1116 2644
1117 errno = old_errno; 2645 errno = old_errno;
1118 } 2646 }
1119} 2647}
1120 2648
1121/* called whenever the libev signal pipe */ 2649/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */ 2650/* got some events (signal, async) */
1123static void 2651static void
1124pipecb (EV_P_ ev_io *iow, int revents) 2652pipecb (EV_P_ ev_io *iow, int revents)
1125{ 2653{
2654 int i;
2655
2656 if (revents & EV_READ)
2657 {
1126#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1127 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1128 { 2660 {
1129 uint64_t counter; 2661 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1131 } 2663 }
1132 else 2664 else
1133#endif 2665#endif
1134 { 2666 {
1135 char dummy; 2667 char dummy[4];
2668#ifdef _WIN32
2669 WSABUF buf;
2670 DWORD recvd;
2671 DWORD flags = 0;
2672 buf.buf = dummy;
2673 buf.len = sizeof (dummy);
2674 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2675#else
1136 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
2678 }
2679 }
2680
2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2684
2685#if EV_SIGNAL_ENABLE
2686 if (sig_pending)
1137 } 2687 {
2688 sig_pending = 0;
1138 2689
1139 if (gotsig && ev_is_default_loop (EV_A)) 2690 ECB_MEMORY_FENCE;
1140 {
1141 int signum;
1142 gotsig = 0;
1143 2691
1144 for (signum = signalmax; signum--; ) 2692 for (i = EV_NSIG - 1; i--; )
1145 if (signals [signum].gotsig) 2693 if (ecb_expect_false (signals [i].pending))
1146 ev_feed_signal_event (EV_A_ signum + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1147 } 2695 }
2696#endif
1148 2697
1149#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1150 if (gotasync) 2699 if (async_pending)
1151 { 2700 {
1152 int i; 2701 async_pending = 0;
1153 gotasync = 0; 2702
2703 ECB_MEMORY_FENCE;
1154 2704
1155 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1157 { 2707 {
1158 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 } 2711 }
1161 } 2712 }
1162#endif 2713#endif
1163} 2714}
1164 2715
1165/*****************************************************************************/ 2716/*****************************************************************************/
1166 2717
2718void
2719ev_feed_signal (int signum) EV_NOEXCEPT
2720{
2721#if EV_MULTIPLICITY
2722 EV_P;
2723 ECB_MEMORY_FENCE_ACQUIRE;
2724 EV_A = signals [signum - 1].loop;
2725
2726 if (!EV_A)
2727 return;
2728#endif
2729
2730 signals [signum - 1].pending = 1;
2731 evpipe_write (EV_A_ &sig_pending);
2732}
2733
1167static void 2734static void
1168ev_sighandler (int signum) 2735ev_sighandler (int signum)
1169{ 2736{
2737#ifdef _WIN32
2738 signal (signum, ev_sighandler);
2739#endif
2740
2741 ev_feed_signal (signum);
2742}
2743
2744ecb_noinline
2745void
2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2747{
2748 WL w;
2749
2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2751 return;
2752
2753 --signum;
2754
1170#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct; 2756 /* it is permissible to try to feed a signal to the wrong loop */
1172#endif 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1173 2758
1174#if _WIN32 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return; 2760 return;
2761#endif
1195 2762
1196 signals [signum].gotsig = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1197 2765
1198 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200} 2768}
1201 2769
2770#if EV_USE_SIGNALFD
2771static void
2772sigfdcb (EV_P_ ev_io *iow, int revents)
2773{
2774 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2775
2776 for (;;)
2777 {
2778 ssize_t res = read (sigfd, si, sizeof (si));
2779
2780 /* not ISO-C, as res might be -1, but works with SuS */
2781 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2782 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2783
2784 if (res < (ssize_t)sizeof (si))
2785 break;
2786 }
2787}
2788#endif
2789
2790#endif
2791
1202/*****************************************************************************/ 2792/*****************************************************************************/
1203 2793
2794#if EV_CHILD_ENABLE
1204static WL childs [EV_PID_HASHSIZE]; 2795static WL childs [EV_PID_HASHSIZE];
1205
1206#ifndef _WIN32
1207 2796
1208static ev_signal childev; 2797static ev_signal childev;
1209 2798
1210#ifndef WIFCONTINUED 2799#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0 2800# define WIFCONTINUED(status) 0
… …
1216child_reap (EV_P_ int chain, int pid, int status) 2805child_reap (EV_P_ int chain, int pid, int status)
1217{ 2806{
1218 ev_child *w; 2807 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2808 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1220 2809
1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2810 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 { 2811 {
1223 if ((w->pid == pid || !w->pid) 2812 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1))) 2813 && (!traced || (w->flags & 1)))
1225 { 2814 {
1226 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2815 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1251 /* make sure we are called again until all children have been reaped */ 2840 /* make sure we are called again until all children have been reaped */
1252 /* we need to do it this way so that the callback gets called before we continue */ 2841 /* we need to do it this way so that the callback gets called before we continue */
1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2842 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1254 2843
1255 child_reap (EV_A_ pid, pid, status); 2844 child_reap (EV_A_ pid, pid, status);
1256 if (EV_PID_HASHSIZE > 1) 2845 if ((EV_PID_HASHSIZE) > 1)
1257 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2846 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1258} 2847}
1259 2848
1260#endif 2849#endif
1261 2850
1262/*****************************************************************************/ 2851/*****************************************************************************/
1263 2852
2853#if EV_USE_IOCP
2854# include "ev_iocp.c"
2855#endif
1264#if EV_USE_PORT 2856#if EV_USE_PORT
1265# include "ev_port.c" 2857# include "ev_port.c"
1266#endif 2858#endif
1267#if EV_USE_KQUEUE 2859#if EV_USE_KQUEUE
1268# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1269#endif 2861#endif
1270#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1271# include "ev_epoll.c" 2863# include "ev_epoll.c"
1272#endif 2864#endif
2865#if EV_USE_LINUXAIO
2866# include "ev_linuxaio.c"
2867#endif
2868#if EV_USE_IOURING
2869# include "ev_iouring.c"
2870#endif
1273#if EV_USE_POLL 2871#if EV_USE_POLL
1274# include "ev_poll.c" 2872# include "ev_poll.c"
1275#endif 2873#endif
1276#if EV_USE_SELECT 2874#if EV_USE_SELECT
1277# include "ev_select.c" 2875# include "ev_select.c"
1278#endif 2876#endif
1279 2877
1280int 2878ecb_cold int
1281ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1282{ 2880{
1283 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1284} 2882}
1285 2883
1286int 2884ecb_cold int
1287ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1288{ 2886{
1289 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
1290} 2888}
1291 2889
1292/* return true if we are running with elevated privileges and should ignore env variables */ 2890/* return true if we are running with elevated privileges and should ignore env variables */
1293int inline_size 2891inline_size ecb_cold int
1294enable_secure (void) 2892enable_secure (void)
1295{ 2893{
1296#ifdef _WIN32 2894#ifdef _WIN32
1297 return 0; 2895 return 0;
1298#else 2896#else
1299 return getuid () != geteuid () 2897 return getuid () != geteuid ()
1300 || getgid () != getegid (); 2898 || getgid () != getegid ();
1301#endif 2899#endif
1302} 2900}
1303 2901
2902ecb_cold
1304unsigned int 2903unsigned int
1305ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
1306{ 2905{
1307 unsigned int flags = 0; 2906 unsigned int flags = 0;
1308 2907
1309 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1310 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1311 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2910 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2911 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2912 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1312 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1313 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1314 2915
1315 return flags; 2916 return flags;
1316} 2917}
1317 2918
2919ecb_cold
1318unsigned int 2920unsigned int
1319ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
1320{ 2922{
1321 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
1322 2924
1323#ifndef __NetBSD__ 2925#ifndef __NetBSD__
1324 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
1328#ifdef __APPLE__ 2930#ifdef __APPLE__
1329 /* only select works correctly on that "unix-certified" platform */ 2931 /* only select works correctly on that "unix-certified" platform */
1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2932 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2933 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1332#endif 2934#endif
2935#ifdef __FreeBSD__
2936 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2937#endif
2938
2939 /* TODO: linuxaio is very experimental */
2940#if !EV_RECOMMEND_LINUXAIO
2941 flags &= ~EVBACKEND_LINUXAIO;
2942#endif
2943 /* TODO: linuxaio is super experimental */
2944#if !EV_RECOMMEND_IOURING
2945 flags &= ~EVBACKEND_IOURING;
2946#endif
1333 2947
1334 return flags; 2948 return flags;
1335} 2949}
1336 2950
2951ecb_cold
1337unsigned int 2952unsigned int
1338ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
1339{ 2954{
1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1341 2956
1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2957 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1344 flags &= ~EVBACKEND_EPOLL; 2959 flags &= ~EVBACKEND_EPOLL;
2960
2961 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2962
2963 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2964 * because our backend_fd is the epoll fd we need as fallback.
2965 * if the kernel ever is fixed, this might change...
2966 */
1345 2967
1346 return flags; 2968 return flags;
1347} 2969}
1348 2970
1349unsigned int 2971unsigned int
1350ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
1351{ 2973{
1352 return backend; 2974 return backend;
1353} 2975}
1354 2976
2977#if EV_FEATURE_API
1355unsigned int 2978unsigned int
1356ev_loop_count (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
1357{ 2980{
1358 return loop_count; 2981 return loop_count;
1359} 2982}
1360 2983
2984unsigned int
2985ev_depth (EV_P) EV_NOEXCEPT
2986{
2987 return loop_depth;
2988}
2989
1361void 2990void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1363{ 2992{
1364 io_blocktime = interval; 2993 io_blocktime = interval;
1365} 2994}
1366 2995
1367void 2996void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1369{ 2998{
1370 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
1371} 3000}
1372 3001
3002void
3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
3004{
3005 userdata = data;
3006}
3007
3008void *
3009ev_userdata (EV_P) EV_NOEXCEPT
3010{
3011 return userdata;
3012}
3013
3014void
3015ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
3016{
3017 invoke_cb = invoke_pending_cb;
3018}
3019
3020void
3021ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
3022{
3023 release_cb = release;
3024 acquire_cb = acquire;
3025}
3026#endif
3027
1373/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
1374static void noinline 3029ecb_noinline ecb_cold
3030static void
1375loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1376{ 3032{
1377 if (!backend) 3033 if (!backend)
1378 { 3034 {
3035 origflags = flags;
3036
1379#if EV_USE_REALTIME 3037#if EV_USE_REALTIME
1380 if (!have_realtime) 3038 if (!have_realtime)
1381 { 3039 {
1382 struct timespec ts; 3040 struct timespec ts;
1383 3041
… …
1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3052 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1395 have_monotonic = 1; 3053 have_monotonic = 1;
1396 } 3054 }
1397#endif 3055#endif
1398 3056
1399 ev_rt_now = ev_time ();
1400 mn_now = get_clock ();
1401 now_floor = mn_now;
1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */ 3057 /* pid check not overridable via env */
1414#ifndef _WIN32 3058#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK) 3059 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid (); 3060 curpid = getpid ();
1417#endif 3061#endif
… …
1419 if (!(flags & EVFLAG_NOENV) 3063 if (!(flags & EVFLAG_NOENV)
1420 && !enable_secure () 3064 && !enable_secure ()
1421 && getenv ("LIBEV_FLAGS")) 3065 && getenv ("LIBEV_FLAGS"))
1422 flags = atoi (getenv ("LIBEV_FLAGS")); 3066 flags = atoi (getenv ("LIBEV_FLAGS"));
1423 3067
1424 if (!(flags & 0x0000ffffU)) 3068 ev_rt_now = ev_time ();
3069 mn_now = get_clock ();
3070 now_floor = mn_now;
3071 rtmn_diff = ev_rt_now - mn_now;
3072#if EV_FEATURE_API
3073 invoke_cb = ev_invoke_pending;
3074#endif
3075
3076 io_blocktime = 0.;
3077 timeout_blocktime = 0.;
3078 backend = 0;
3079 backend_fd = -1;
3080 sig_pending = 0;
3081#if EV_ASYNC_ENABLE
3082 async_pending = 0;
3083#endif
3084 pipe_write_skipped = 0;
3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
3088#if EV_USE_INOTIFY
3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3090#endif
3091#if EV_USE_SIGNALFD
3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3093#endif
3094
3095 if (!(flags & EVBACKEND_MASK))
1425 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
1426 3097
3098#if EV_USE_IOCP
3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3100#endif
1427#if EV_USE_PORT 3101#if EV_USE_PORT
1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1429#endif 3103#endif
1430#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
1431 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3105 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3106#endif
3107#if EV_USE_IOURING
3108 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3109#endif
3110#if EV_USE_LINUXAIO
3111 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1432#endif 3112#endif
1433#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
1434 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1435#endif 3115#endif
1436#if EV_USE_POLL 3116#if EV_USE_POLL
1437 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1438#endif 3118#endif
1439#if EV_USE_SELECT 3119#if EV_USE_SELECT
1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1441#endif 3121#endif
1442 3122
1443 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
1444 3124
3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1445 ev_init (&pipe_w, pipecb); 3126 ev_init (&pipe_w, pipecb);
1446 ev_set_priority (&pipe_w, EV_MAXPRI); 3127 ev_set_priority (&pipe_w, EV_MAXPRI);
3128#endif
1447 } 3129 }
1448} 3130}
1449 3131
1450/* free up a loop structure */ 3132/* free up a loop structure */
1451static void noinline 3133ecb_cold
3134void
1452loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
1453{ 3136{
1454 int i; 3137 int i;
1455 3138
3139#if EV_MULTIPLICITY
3140 /* mimic free (0) */
3141 if (!EV_A)
3142 return;
3143#endif
3144
3145#if EV_CLEANUP_ENABLE
3146 /* queue cleanup watchers (and execute them) */
3147 if (ecb_expect_false (cleanupcnt))
3148 {
3149 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3150 EV_INVOKE_PENDING;
3151 }
3152#endif
3153
3154#if EV_CHILD_ENABLE
3155 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3156 {
3157 ev_ref (EV_A); /* child watcher */
3158 ev_signal_stop (EV_A_ &childev);
3159 }
3160#endif
3161
1456 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
1457 { 3163 {
1458 ev_ref (EV_A); /* signal watcher */ 3164 /*ev_ref (EV_A);*/
1459 ev_io_stop (EV_A_ &pipe_w); 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
1460 3166
3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3169 }
3170
1461#if EV_USE_EVENTFD 3171#if EV_USE_SIGNALFD
1462 if (evfd >= 0) 3172 if (ev_is_active (&sigfd_w))
1463 close (evfd); 3173 close (sigfd);
1464#endif 3174#endif
1465
1466 if (evpipe [0] >= 0)
1467 {
1468 close (evpipe [0]);
1469 close (evpipe [1]);
1470 }
1471 }
1472 3175
1473#if EV_USE_INOTIFY 3176#if EV_USE_INOTIFY
1474 if (fs_fd >= 0) 3177 if (fs_fd >= 0)
1475 close (fs_fd); 3178 close (fs_fd);
1476#endif 3179#endif
1477 3180
1478 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
1479 close (backend_fd); 3182 close (backend_fd);
1480 3183
3184#if EV_USE_IOCP
3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3186#endif
1481#if EV_USE_PORT 3187#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1483#endif 3189#endif
1484#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
1485 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3191 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3192#endif
3193#if EV_USE_IOURING
3194 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3195#endif
3196#if EV_USE_LINUXAIO
3197 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1486#endif 3198#endif
1487#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
1488 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1489#endif 3201#endif
1490#if EV_USE_POLL 3202#if EV_USE_POLL
1491 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1492#endif 3204#endif
1493#if EV_USE_SELECT 3205#if EV_USE_SELECT
1494 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1495#endif 3207#endif
1496 3208
1497 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
1498 { 3210 {
1499 array_free (pending, [i]); 3211 array_free (pending, [i]);
1500#if EV_IDLE_ENABLE 3212#if EV_IDLE_ENABLE
1501 array_free (idle, [i]); 3213 array_free (idle, [i]);
1502#endif 3214#endif
1503 } 3215 }
1504 3216
1505 ev_free (anfds); anfdmax = 0; 3217 ev_free (anfds); anfds = 0; anfdmax = 0;
1506 3218
1507 /* have to use the microsoft-never-gets-it-right macro */ 3219 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY); 3220 array_free (rfeed, EMPTY);
1509 array_free (fdchange, EMPTY); 3221 array_free (fdchange, EMPTY);
1510 array_free (timer, EMPTY); 3222 array_free (timer, EMPTY);
… …
1512 array_free (periodic, EMPTY); 3224 array_free (periodic, EMPTY);
1513#endif 3225#endif
1514#if EV_FORK_ENABLE 3226#if EV_FORK_ENABLE
1515 array_free (fork, EMPTY); 3227 array_free (fork, EMPTY);
1516#endif 3228#endif
3229#if EV_CLEANUP_ENABLE
3230 array_free (cleanup, EMPTY);
3231#endif
1517 array_free (prepare, EMPTY); 3232 array_free (prepare, EMPTY);
1518 array_free (check, EMPTY); 3233 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE 3234#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY); 3235 array_free (async, EMPTY);
1521#endif 3236#endif
1522 3237
1523 backend = 0; 3238 backend = 0;
3239
3240#if EV_MULTIPLICITY
3241 if (ev_is_default_loop (EV_A))
3242#endif
3243 ev_default_loop_ptr = 0;
3244#if EV_MULTIPLICITY
3245 else
3246 ev_free (EV_A);
3247#endif
1524} 3248}
1525 3249
1526#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P); 3251inline_size void infy_fork (EV_P);
1528#endif 3252#endif
1529 3253
1530inline_size void 3254inline_size void
1531loop_fork (EV_P) 3255loop_fork (EV_P)
1532{ 3256{
1533#if EV_USE_PORT 3257#if EV_USE_PORT
1534 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1535#endif 3259#endif
1536#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
1537 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3261 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3262#endif
3263#if EV_USE_IOURING
3264 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3265#endif
3266#if EV_USE_LINUXAIO
3267 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1538#endif 3268#endif
1539#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
1540 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1541#endif 3271#endif
1542#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
1543 infy_fork (EV_A); 3273 infy_fork (EV_A);
1544#endif 3274#endif
1545 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1546 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
1547 { 3278 {
1548 /* this "locks" the handlers against writing to the pipe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
1554 3280
1555 ev_ref (EV_A); 3281 ev_ref (EV_A);
1556 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
1557 3283
1558#if EV_USE_EVENTFD
1559 if (evfd >= 0)
1560 close (evfd);
1561#endif
1562
1563 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
1564 { 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
1565 close (evpipe [0]);
1566 close (evpipe [1]);
1567 }
1568 3286
1569 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
1571 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1572 } 3290 }
3291#endif
1573 3292
1574 postfork = 0; 3293 postfork = 0;
1575} 3294}
1576 3295
1577#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
1578 3297
3298ecb_cold
1579struct ev_loop * 3299struct ev_loop *
1580ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
1581{ 3301{
1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1583 3303
1584 memset (loop, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
1585
1586 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
1587 3306
1588 if (ev_backend (EV_A)) 3307 if (ev_backend (EV_A))
1589 return loop; 3308 return EV_A;
1590 3309
3310 ev_free (EV_A);
1591 return 0; 3311 return 0;
1592} 3312}
1593 3313
1594void 3314#endif /* multiplicity */
1595ev_loop_destroy (EV_P)
1596{
1597 loop_destroy (EV_A);
1598 ev_free (loop);
1599}
1600
1601void
1602ev_loop_fork (EV_P)
1603{
1604 postfork = 1; /* must be in line with ev_default_fork */
1605}
1606 3315
1607#if EV_VERIFY 3316#if EV_VERIFY
1608static void noinline 3317ecb_noinline ecb_cold
3318static void
1609verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
1610{ 3320{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3321 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612 3322
1613 if (w->pending) 3323 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3324 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615} 3325}
1616 3326
1617static void noinline 3327ecb_noinline ecb_cold
3328static void
1618verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
1619{ 3330{
1620 int i; 3331 int i;
1621 3332
1622 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1627 3338
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 } 3340 }
1630} 3341}
1631 3342
1632static void noinline 3343ecb_noinline ecb_cold
3344static void
1633array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
1634{ 3346{
1635 while (cnt--) 3347 while (cnt--)
1636 { 3348 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]); 3350 verify_watcher (EV_A_ ws [cnt]);
1639 } 3351 }
1640} 3352}
1641#endif 3353#endif
1642 3354
1643void 3355#if EV_FEATURE_API
1644ev_loop_verify (EV_P) 3356void ecb_cold
3357ev_verify (EV_P) EV_NOEXCEPT
1645{ 3358{
1646#if EV_VERIFY 3359#if EV_VERIFY
1647 int i; 3360 int i;
1648 WL w; 3361 WL w, w2;
1649 3362
1650 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
1651 3364
1652 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655 3368
1656 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
1658 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
1659 { 3375 {
1660 verify_watcher (EV_A_ (W)w); 3376 verify_watcher (EV_A_ (W)w);
3377
3378 if (j++ & 1)
3379 {
3380 assert (("libev: io watcher list contains a loop", w != w2));
3381 w2 = w2->next;
3382 }
3383
1661 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3384 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1662 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3385 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1663 } 3386 }
3387 }
1664 3388
1665 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
1667 3391
1668#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
1683#if EV_FORK_ENABLE 3407#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt); 3408 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt); 3409 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif 3410#endif
1687 3411
3412#if EV_CLEANUP_ENABLE
3413 assert (cleanupmax >= cleanupcnt);
3414 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3415#endif
3416
1688#if EV_ASYNC_ENABLE 3417#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt); 3418 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt); 3419 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif 3420#endif
1692 3421
3422#if EV_PREPARE_ENABLE
1693 assert (preparemax >= preparecnt); 3423 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt); 3424 array_verify (EV_A_ (W *)prepares, preparecnt);
3425#endif
1695 3426
3427#if EV_CHECK_ENABLE
1696 assert (checkmax >= checkcnt); 3428 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt); 3429 array_verify (EV_A_ (W *)checks, checkcnt);
3430#endif
1698 3431
1699# if 0 3432# if 0
3433#if EV_CHILD_ENABLE
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3434 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3435 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3436#endif
1702# endif 3437# endif
1703#endif 3438#endif
1704} 3439}
1705 3440#endif
1706#endif /* multiplicity */
1707 3441
1708#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
1709struct ev_loop * 3444struct ev_loop *
1710ev_default_loop_init (unsigned int flags)
1711#else 3445#else
1712int 3446int
3447#endif
1713ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
1714#endif
1715{ 3449{
1716 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
1717 { 3451 {
1718#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
1720#else 3454#else
1721 ev_default_loop_ptr = 1; 3455 ev_default_loop_ptr = 1;
1722#endif 3456#endif
1723 3457
1724 loop_init (EV_A_ flags); 3458 loop_init (EV_A_ flags);
1725 3459
1726 if (ev_backend (EV_A)) 3460 if (ev_backend (EV_A))
1727 { 3461 {
1728#ifndef _WIN32 3462#if EV_CHILD_ENABLE
1729 ev_signal_init (&childev, childcb, SIGCHLD); 3463 ev_signal_init (&childev, childcb, SIGCHLD);
1730 ev_set_priority (&childev, EV_MAXPRI); 3464 ev_set_priority (&childev, EV_MAXPRI);
1731 ev_signal_start (EV_A_ &childev); 3465 ev_signal_start (EV_A_ &childev);
1732 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3466 ev_unref (EV_A); /* child watcher should not keep loop alive */
1733#endif 3467#endif
… …
1738 3472
1739 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
1740} 3474}
1741 3475
1742void 3476void
1743ev_default_destroy (void) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
1744{ 3478{
1745#if EV_MULTIPLICITY 3479 postfork = 1;
1746 struct ev_loop *loop = ev_default_loop_ptr;
1747#endif
1748
1749 ev_default_loop_ptr = 0;
1750
1751#ifndef _WIN32
1752 ev_ref (EV_A); /* child watcher */
1753 ev_signal_stop (EV_A_ &childev);
1754#endif
1755
1756 loop_destroy (EV_A);
1757}
1758
1759void
1760ev_default_fork (void)
1761{
1762#if EV_MULTIPLICITY
1763 struct ev_loop *loop = ev_default_loop_ptr;
1764#endif
1765
1766 postfork = 1; /* must be in line with ev_loop_fork */
1767} 3480}
1768 3481
1769/*****************************************************************************/ 3482/*****************************************************************************/
1770 3483
1771void 3484void
1772ev_invoke (EV_P_ void *w, int revents) 3485ev_invoke (EV_P_ void *w, int revents)
1773{ 3486{
1774 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
1775} 3488}
1776 3489
1777inline_speed void 3490unsigned int
1778call_pending (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
1779{ 3492{
1780 int pri; 3493 int pri;
3494 unsigned int count = 0;
1781 3495
1782 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
3497 count += pendingcnt [pri];
3498
3499 return count;
3500}
3501
3502ecb_noinline
3503void
3504ev_invoke_pending (EV_P)
3505{
3506 pendingpri = NUMPRI;
3507
3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
1783 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
1784 { 3514 {
1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1786 3516
1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1789
1790 p->w->pending = 0; 3517 p->w->pending = 0;
1791 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
1792 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
1793 } 3520 }
3521 }
3522 while (pendingpri);
1794} 3523}
1795 3524
1796#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
1797/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
1799inline_size void 3528inline_size void
1800idle_reify (EV_P) 3529idle_reify (EV_P)
1801{ 3530{
1802 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
1803 { 3532 {
1804 int pri; 3533 int pri;
1805 3534
1806 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
1807 { 3536 {
… …
1837 { 3566 {
1838 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
1839 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
1840 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
1841 3570
1842 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3571 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
1843 3572
1844 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
1845 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
1846 } 3575 }
1847 else 3576 else
… …
1850 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w); 3580 feed_reverse (EV_A_ (W)w);
1852 } 3581 }
1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3582 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1854 3583
1855 feed_reverse_done (EV_A_ EV_TIMEOUT); 3584 feed_reverse_done (EV_A_ EV_TIMER);
1856 } 3585 }
1857} 3586}
1858 3587
1859#if EV_PERIODIC_ENABLE 3588#if EV_PERIODIC_ENABLE
3589
3590ecb_noinline
3591static void
3592periodic_recalc (EV_P_ ev_periodic *w)
3593{
3594 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3595 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3596
3597 /* the above almost always errs on the low side */
3598 while (at <= ev_rt_now)
3599 {
3600 ev_tstamp nat = at + w->interval;
3601
3602 /* when resolution fails us, we use ev_rt_now */
3603 if (ecb_expect_false (nat == at))
3604 {
3605 at = ev_rt_now;
3606 break;
3607 }
3608
3609 at = nat;
3610 }
3611
3612 ev_at (w) = at;
3613}
3614
1860/* make periodics pending */ 3615/* make periodics pending */
1861inline_size void 3616inline_size void
1862periodics_reify (EV_P) 3617periodics_reify (EV_P)
1863{ 3618{
1864 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
1865 3620
1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1867 { 3622 {
1868 int feed_count = 0;
1869
1870 do 3623 do
1871 { 3624 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873 3626
1874 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3627 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1883 ANHE_at_cache (periodics [HEAP0]); 3636 ANHE_at_cache (periodics [HEAP0]);
1884 downheap (periodics, periodiccnt, HEAP0); 3637 downheap (periodics, periodiccnt, HEAP0);
1885 } 3638 }
1886 else if (w->interval) 3639 else if (w->interval)
1887 { 3640 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3641 periodic_recalc (EV_A_ w);
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]); 3642 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0); 3643 downheap (periodics, periodiccnt, HEAP0);
1904 } 3644 }
1905 else 3645 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3646 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1913 feed_reverse_done (EV_A_ EV_PERIODIC); 3653 feed_reverse_done (EV_A_ EV_PERIODIC);
1914 } 3654 }
1915} 3655}
1916 3656
1917/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3658/* TODO: maybe ensure that at least one event happens when jumping forward? */
1919static void noinline 3659ecb_noinline ecb_cold
3660static void
1920periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
1921{ 3662{
1922 int i; 3663 int i;
1923 3664
1924 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3668 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1928 3669
1929 if (w->reschedule_cb) 3670 if (w->reschedule_cb)
1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3671 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1931 else if (w->interval) 3672 else if (w->interval)
1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3673 periodic_recalc (EV_A_ w);
1933 3674
1934 ANHE_at_cache (periodics [i]); 3675 ANHE_at_cache (periodics [i]);
1935 } 3676 }
1936 3677
1937 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
1938} 3679}
1939#endif 3680#endif
1940 3681
1941/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
1942static void noinline 3683ecb_noinline ecb_cold
3684static void
1943timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
1944{ 3686{
1945 int i; 3687 int i;
1946 3688
1947 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
1951 ANHE_at_cache (*he); 3693 ANHE_at_cache (*he);
1952 } 3694 }
1953} 3695}
1954 3696
1955/* fetch new monotonic and realtime times from the kernel */ 3697/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
1957inline_speed void 3699inline_speed void
1958time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
1959{ 3701{
1960#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
1962 { 3704 {
1963 int i; 3705 int i;
1964 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
1965 3707
1966 mn_now = get_clock (); 3708 mn_now = get_clock ();
1967 3709
1968 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1969 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
1970 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3712 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
1971 { 3713 {
1972 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
1973 return; 3715 return;
1974 } 3716 }
1975 3717
… …
1984 * doesn't hurt either as we only do this on time-jumps or 3726 * doesn't hurt either as we only do this on time-jumps or
1985 * in the unlikely event of having been preempted here. 3727 * in the unlikely event of having been preempted here.
1986 */ 3728 */
1987 for (i = 4; --i; ) 3729 for (i = 4; --i; )
1988 { 3730 {
3731 ev_tstamp diff;
1989 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
1990 3733
1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3734 diff = odiff - rtmn_diff;
3735
3736 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
1992 return; /* all is well */ 3737 return; /* all is well */
1993 3738
1994 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
1995 mn_now = get_clock (); 3740 mn_now = get_clock ();
1996 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2005 else 3750 else
2006#endif 3751#endif
2007 { 3752 {
2008 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2009 3754
2010 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3755 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2011 { 3756 {
2012 /* adjust timers. this is easy, as the offset is the same for all of them */ 3757 /* adjust timers. this is easy, as the offset is the same for all of them */
2013 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2014#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2015 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2018 3763
2019 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2020 } 3765 }
2021} 3766}
2022 3767
2023static int loop_done; 3768int
2024
2025void
2026ev_loop (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2027{ 3770{
3771#if EV_FEATURE_API
3772 ++loop_depth;
3773#endif
3774
3775 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3776
2028 loop_done = EVUNLOOP_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2029 3778
2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3779 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2031 3780
2032 do 3781 do
2033 { 3782 {
2034#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A); 3784 ev_verify (EV_A);
2036#endif 3785#endif
2037 3786
2038#ifndef _WIN32 3787#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2041 { 3790 {
2042 curpid = getpid (); 3791 curpid = getpid ();
2043 postfork = 1; 3792 postfork = 1;
2044 } 3793 }
2045#endif 3794#endif
2046 3795
2047#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2048 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2049 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2050 if (forkcnt) 3799 if (forkcnt)
2051 { 3800 {
2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053 call_pending (EV_A); 3802 EV_INVOKE_PENDING;
2054 } 3803 }
2055#endif 3804#endif
2056 3805
3806#if EV_PREPARE_ENABLE
2057 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2058 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2059 { 3809 {
2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2061 call_pending (EV_A); 3811 EV_INVOKE_PENDING;
2062 } 3812 }
3813#endif
3814
3815 if (ecb_expect_false (loop_done))
3816 break;
2063 3817
2064 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2065 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2066 loop_fork (EV_A); 3820 loop_fork (EV_A);
2067 3821
2068 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2069 fd_reify (EV_A); 3823 fd_reify (EV_A);
2070 3824
2071 /* calculate blocking time */ 3825 /* calculate blocking time */
2072 { 3826 {
2073 ev_tstamp waittime = 0.; 3827 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.; 3828 ev_tstamp sleeptime = 0.;
2075 3829
3830 /* remember old timestamp for io_blocktime calculation */
3831 ev_tstamp prev_mn_now = mn_now;
3832
3833 /* update time to cancel out callback processing overhead */
3834 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3835
3836 /* from now on, we want a pipe-wake-up */
3837 pipe_write_wanted = 1;
3838
3839 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3840
2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2077 { 3842 {
2078 /* update time to cancel out callback processing overhead */
2079 time_update (EV_A_ 1e100);
2080
2081 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2082 3844
2083 if (timercnt) 3845 if (timercnt)
2084 { 3846 {
2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2086 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
2087 } 3849 }
2088 3850
2089#if EV_PERIODIC_ENABLE 3851#if EV_PERIODIC_ENABLE
2090 if (periodiccnt) 3852 if (periodiccnt)
2091 { 3853 {
2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3854 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2093 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2094 } 3856 }
2095#endif 3857#endif
2096 3858
3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2097 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2099 3862
2100 sleeptime = waittime - backend_fudge; 3863 /* now there are two more special cases left, either we have
3864 * already-expired timers, so we should not sleep, or we have timers
3865 * that expire very soon, in which case we need to weait for a minimum
3866 * amount of time for some event loop backends
3867 */
3868 if (ecb_expect_false (waittime < backend_mintime))
3869 waittime = waittime <= EV_TS_CONST (0.)
3870 ? EV_TS_CONST (0.)
3871 : backend_mintime;
2101 3872
3873 /* extra check because io_blocktime is commonly 0 */
2102 if (expect_true (sleeptime > io_blocktime)) 3874 if (ecb_expect_false (io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 { 3875 {
3876 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3877
3878 if (sleeptime > waittime - backend_mintime)
3879 sleeptime = waittime - backend_mintime;
3880
3881 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3882 {
2107 ev_sleep (sleeptime); 3883 ev_sleep (sleeptime);
2108 waittime -= sleeptime; 3884 waittime -= sleeptime;
3885 }
2109 } 3886 }
2110 } 3887 }
2111 3888
3889#if EV_FEATURE_API
2112 ++loop_count; 3890 ++loop_count;
3891#endif
3892 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2113 backend_poll (EV_A_ waittime); 3893 backend_poll (EV_A_ waittime);
3894 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3895
3896 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3897
3898 ECB_MEMORY_FENCE_ACQUIRE;
3899 if (pipe_write_skipped)
3900 {
3901 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3902 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3903 }
2114 3904
2115 /* update ev_rt_now, do magic */ 3905 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime); 3906 time_update (EV_A_ waittime + sleeptime);
2117 } 3907 }
2118 3908
… …
2125#if EV_IDLE_ENABLE 3915#if EV_IDLE_ENABLE
2126 /* queue idle watchers unless other events are pending */ 3916 /* queue idle watchers unless other events are pending */
2127 idle_reify (EV_A); 3917 idle_reify (EV_A);
2128#endif 3918#endif
2129 3919
3920#if EV_CHECK_ENABLE
2130 /* queue check watchers, to be executed first */ 3921 /* queue check watchers, to be executed first */
2131 if (expect_false (checkcnt)) 3922 if (ecb_expect_false (checkcnt))
2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3923 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3924#endif
2133 3925
2134 call_pending (EV_A); 3926 EV_INVOKE_PENDING;
2135 } 3927 }
2136 while (expect_true ( 3928 while (ecb_expect_true (
2137 activecnt 3929 activecnt
2138 && !loop_done 3930 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3931 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2140 )); 3932 ));
2141 3933
2142 if (loop_done == EVUNLOOP_ONE) 3934 if (loop_done == EVBREAK_ONE)
2143 loop_done = EVUNLOOP_CANCEL; 3935 loop_done = EVBREAK_CANCEL;
2144}
2145 3936
3937#if EV_FEATURE_API
3938 --loop_depth;
3939#endif
3940
3941 return activecnt;
3942}
3943
2146void 3944void
2147ev_unloop (EV_P_ int how) 3945ev_break (EV_P_ int how) EV_NOEXCEPT
2148{ 3946{
2149 loop_done = how; 3947 loop_done = how;
2150} 3948}
2151 3949
2152void 3950void
2153ev_ref (EV_P) 3951ev_ref (EV_P) EV_NOEXCEPT
2154{ 3952{
2155 ++activecnt; 3953 ++activecnt;
2156} 3954}
2157 3955
2158void 3956void
2159ev_unref (EV_P) 3957ev_unref (EV_P) EV_NOEXCEPT
2160{ 3958{
2161 --activecnt; 3959 --activecnt;
2162} 3960}
2163 3961
2164void 3962void
2165ev_now_update (EV_P) 3963ev_now_update (EV_P) EV_NOEXCEPT
2166{ 3964{
2167 time_update (EV_A_ 1e100); 3965 time_update (EV_A_ EV_TSTAMP_HUGE);
2168} 3966}
2169 3967
2170void 3968void
2171ev_suspend (EV_P) 3969ev_suspend (EV_P) EV_NOEXCEPT
2172{ 3970{
2173 ev_now_update (EV_A); 3971 ev_now_update (EV_A);
2174} 3972}
2175 3973
2176void 3974void
2177ev_resume (EV_P) 3975ev_resume (EV_P) EV_NOEXCEPT
2178{ 3976{
2179 ev_tstamp mn_prev = mn_now; 3977 ev_tstamp mn_prev = mn_now;
2180 3978
2181 ev_now_update (EV_A); 3979 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev); 3980 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2199inline_size void 3997inline_size void
2200wlist_del (WL *head, WL elem) 3998wlist_del (WL *head, WL elem)
2201{ 3999{
2202 while (*head) 4000 while (*head)
2203 { 4001 {
2204 if (*head == elem) 4002 if (ecb_expect_true (*head == elem))
2205 { 4003 {
2206 *head = elem->next; 4004 *head = elem->next;
2207 return; 4005 break;
2208 } 4006 }
2209 4007
2210 head = &(*head)->next; 4008 head = &(*head)->next;
2211 } 4009 }
2212} 4010}
… …
2221 w->pending = 0; 4019 w->pending = 0;
2222 } 4020 }
2223} 4021}
2224 4022
2225int 4023int
2226ev_clear_pending (EV_P_ void *w) 4024ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2227{ 4025{
2228 W w_ = (W)w; 4026 W w_ = (W)w;
2229 int pending = w_->pending; 4027 int pending = w_->pending;
2230 4028
2231 if (expect_true (pending)) 4029 if (ecb_expect_true (pending))
2232 { 4030 {
2233 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4031 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2234 p->w = (W)&pending_w; 4032 p->w = (W)&pending_w;
2235 w_->pending = 0; 4033 w_->pending = 0;
2236 return p->events; 4034 return p->events;
… …
2240} 4038}
2241 4039
2242inline_size void 4040inline_size void
2243pri_adjust (EV_P_ W w) 4041pri_adjust (EV_P_ W w)
2244{ 4042{
2245 int pri = w->priority; 4043 int pri = ev_priority (w);
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 4044 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 4045 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri; 4046 ev_set_priority (w, pri);
2249} 4047}
2250 4048
2251inline_speed void 4049inline_speed void
2252ev_start (EV_P_ W w, int active) 4050ev_start (EV_P_ W w, int active)
2253{ 4051{
… …
2263 w->active = 0; 4061 w->active = 0;
2264} 4062}
2265 4063
2266/*****************************************************************************/ 4064/*****************************************************************************/
2267 4065
2268void noinline 4066ecb_noinline
4067void
2269ev_io_start (EV_P_ ev_io *w) 4068ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2270{ 4069{
2271 int fd = w->fd; 4070 int fd = w->fd;
2272 4071
2273 if (expect_false (ev_is_active (w))) 4072 if (ecb_expect_false (ev_is_active (w)))
2274 return; 4073 return;
2275 4074
2276 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4075 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4076 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278 4077
4078#if EV_VERIFY >= 2
4079 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4080#endif
2279 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2280 4082
2281 ev_start (EV_A_ (W)w, 1); 4083 ev_start (EV_A_ (W)w, 1);
2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4084 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2283 wlist_add (&anfds[fd].head, (WL)w); 4085 wlist_add (&anfds[fd].head, (WL)w);
2284 4086
4087 /* common bug, apparently */
4088 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4089
2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4090 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2286 w->events &= ~EV__IOFDSET; 4091 w->events &= ~EV__IOFDSET;
2287 4092
2288 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
2289} 4094}
2290 4095
2291void noinline 4096ecb_noinline
4097void
2292ev_io_stop (EV_P_ ev_io *w) 4098ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2293{ 4099{
2294 clear_pending (EV_A_ (W)w); 4100 clear_pending (EV_A_ (W)w);
2295 if (expect_false (!ev_is_active (w))) 4101 if (ecb_expect_false (!ev_is_active (w)))
2296 return; 4102 return;
2297 4103
2298 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4104 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2299 4105
4106#if EV_VERIFY >= 2
4107 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4108#endif
2300 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
2301 4110
2302 wlist_del (&anfds[w->fd].head, (WL)w); 4111 wlist_del (&anfds[w->fd].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 4112 ev_stop (EV_A_ (W)w);
2304 4113
2305 fd_change (EV_A_ w->fd, 1); 4114 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2306 4115
2307 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
2308} 4117}
2309 4118
2310void noinline 4119ecb_noinline
4120void
2311ev_timer_start (EV_P_ ev_timer *w) 4121ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2312{ 4122{
2313 if (expect_false (ev_is_active (w))) 4123 if (ecb_expect_false (ev_is_active (w)))
2314 return; 4124 return;
2315 4125
2316 ev_at (w) += mn_now; 4126 ev_at (w) += mn_now;
2317 4127
2318 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4128 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2319 4129
2320 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2321 4131
2322 ++timercnt; 4132 ++timercnt;
2323 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4133 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2324 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4134 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2325 ANHE_w (timers [ev_active (w)]) = (WT)w; 4135 ANHE_w (timers [ev_active (w)]) = (WT)w;
2326 ANHE_at_cache (timers [ev_active (w)]); 4136 ANHE_at_cache (timers [ev_active (w)]);
2327 upheap (timers, ev_active (w)); 4137 upheap (timers, ev_active (w));
2328 4138
2329 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2330 4140
2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4141 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2332} 4142}
2333 4143
2334void noinline 4144ecb_noinline
4145void
2335ev_timer_stop (EV_P_ ev_timer *w) 4146ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2336{ 4147{
2337 clear_pending (EV_A_ (W)w); 4148 clear_pending (EV_A_ (W)w);
2338 if (expect_false (!ev_is_active (w))) 4149 if (ecb_expect_false (!ev_is_active (w)))
2339 return; 4150 return;
2340 4151
2341 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
2342 4153
2343 { 4154 {
… …
2345 4156
2346 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4157 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2347 4158
2348 --timercnt; 4159 --timercnt;
2349 4160
2350 if (expect_true (active < timercnt + HEAP0)) 4161 if (ecb_expect_true (active < timercnt + HEAP0))
2351 { 4162 {
2352 timers [active] = timers [timercnt + HEAP0]; 4163 timers [active] = timers [timercnt + HEAP0];
2353 adjustheap (timers, timercnt, active); 4164 adjustheap (timers, timercnt, active);
2354 } 4165 }
2355 } 4166 }
2356 4167
2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now; 4168 ev_at (w) -= mn_now;
2360 4169
2361 ev_stop (EV_A_ (W)w); 4170 ev_stop (EV_A_ (W)w);
2362}
2363 4171
2364void noinline 4172 EV_FREQUENT_CHECK;
4173}
4174
4175ecb_noinline
4176void
2365ev_timer_again (EV_P_ ev_timer *w) 4177ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2366{ 4178{
2367 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
4180
4181 clear_pending (EV_A_ (W)w);
2368 4182
2369 if (ev_is_active (w)) 4183 if (ev_is_active (w))
2370 { 4184 {
2371 if (w->repeat) 4185 if (w->repeat)
2372 { 4186 {
… …
2384 } 4198 }
2385 4199
2386 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2387} 4201}
2388 4202
4203ev_tstamp
4204ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4205{
4206 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
4207}
4208
2389#if EV_PERIODIC_ENABLE 4209#if EV_PERIODIC_ENABLE
2390void noinline 4210ecb_noinline
4211void
2391ev_periodic_start (EV_P_ ev_periodic *w) 4212ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2392{ 4213{
2393 if (expect_false (ev_is_active (w))) 4214 if (ecb_expect_false (ev_is_active (w)))
2394 return; 4215 return;
2395 4216
2396 if (w->reschedule_cb) 4217 if (w->reschedule_cb)
2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4218 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2398 else if (w->interval) 4219 else if (w->interval)
2399 { 4220 {
2400 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4221 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2401 /* this formula differs from the one in periodic_reify because we do not always round up */ 4222 periodic_recalc (EV_A_ w);
2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2403 } 4223 }
2404 else 4224 else
2405 ev_at (w) = w->offset; 4225 ev_at (w) = w->offset;
2406 4226
2407 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2408 4228
2409 ++periodiccnt; 4229 ++periodiccnt;
2410 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4230 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2411 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4231 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2412 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4232 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2413 ANHE_at_cache (periodics [ev_active (w)]); 4233 ANHE_at_cache (periodics [ev_active (w)]);
2414 upheap (periodics, ev_active (w)); 4234 upheap (periodics, ev_active (w));
2415 4235
2416 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
2417 4237
2418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4238 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2419} 4239}
2420 4240
2421void noinline 4241ecb_noinline
4242void
2422ev_periodic_stop (EV_P_ ev_periodic *w) 4243ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2423{ 4244{
2424 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 4246 if (ecb_expect_false (!ev_is_active (w)))
2426 return; 4247 return;
2427 4248
2428 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2429 4250
2430 { 4251 {
… …
2432 4253
2433 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4254 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2434 4255
2435 --periodiccnt; 4256 --periodiccnt;
2436 4257
2437 if (expect_true (active < periodiccnt + HEAP0)) 4258 if (ecb_expect_true (active < periodiccnt + HEAP0))
2438 { 4259 {
2439 periodics [active] = periodics [periodiccnt + HEAP0]; 4260 periodics [active] = periodics [periodiccnt + HEAP0];
2440 adjustheap (periodics, periodiccnt, active); 4261 adjustheap (periodics, periodiccnt, active);
2441 } 4262 }
2442 } 4263 }
2443 4264
2444 EV_FREQUENT_CHECK;
2445
2446 ev_stop (EV_A_ (W)w); 4265 ev_stop (EV_A_ (W)w);
2447}
2448 4266
2449void noinline 4267 EV_FREQUENT_CHECK;
4268}
4269
4270ecb_noinline
4271void
2450ev_periodic_again (EV_P_ ev_periodic *w) 4272ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2451{ 4273{
2452 /* TODO: use adjustheap and recalculation */ 4274 /* TODO: use adjustheap and recalculation */
2453 ev_periodic_stop (EV_A_ w); 4275 ev_periodic_stop (EV_A_ w);
2454 ev_periodic_start (EV_A_ w); 4276 ev_periodic_start (EV_A_ w);
2455} 4277}
… …
2457 4279
2458#ifndef SA_RESTART 4280#ifndef SA_RESTART
2459# define SA_RESTART 0 4281# define SA_RESTART 0
2460#endif 4282#endif
2461 4283
2462void noinline 4284#if EV_SIGNAL_ENABLE
4285
4286ecb_noinline
4287void
2463ev_signal_start (EV_P_ ev_signal *w) 4288ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2464{ 4289{
4290 if (ecb_expect_false (ev_is_active (w)))
4291 return;
4292
4293 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4294
2465#if EV_MULTIPLICITY 4295#if EV_MULTIPLICITY
2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4296 assert (("libev: a signal must not be attached to two different loops",
2467#endif 4297 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2468 if (expect_false (ev_is_active (w)))
2469 return;
2470 4298
2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4299 signals [w->signum - 1].loop = EV_A;
4300 ECB_MEMORY_FENCE_RELEASE;
4301#endif
2472 4302
2473 evpipe_init (EV_A);
2474
2475 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
2476 4304
4305#if EV_USE_SIGNALFD
4306 if (sigfd == -2)
2477 { 4307 {
2478#ifndef _WIN32 4308 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2479 sigset_t full, prev; 4309 if (sigfd < 0 && errno == EINVAL)
2480 sigfillset (&full); 4310 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483 4311
2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4312 if (sigfd >= 0)
4313 {
4314 fd_intern (sigfd); /* doing it twice will not hurt */
2485 4315
2486#ifndef _WIN32 4316 sigemptyset (&sigfd_set);
2487 sigprocmask (SIG_SETMASK, &prev, 0); 4317
2488#endif 4318 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4319 ev_set_priority (&sigfd_w, EV_MAXPRI);
4320 ev_io_start (EV_A_ &sigfd_w);
4321 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4322 }
2489 } 4323 }
4324
4325 if (sigfd >= 0)
4326 {
4327 /* TODO: check .head */
4328 sigaddset (&sigfd_set, w->signum);
4329 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4330
4331 signalfd (sigfd, &sigfd_set, 0);
4332 }
4333#endif
2490 4334
2491 ev_start (EV_A_ (W)w, 1); 4335 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&signals [w->signum - 1].head, (WL)w); 4336 wlist_add (&signals [w->signum - 1].head, (WL)w);
2493 4337
2494 if (!((WL)w)->next) 4338 if (!((WL)w)->next)
4339# if EV_USE_SIGNALFD
4340 if (sigfd < 0) /*TODO*/
4341# endif
2495 { 4342 {
2496#if _WIN32 4343# ifdef _WIN32
4344 evpipe_init (EV_A);
4345
2497 signal (w->signum, ev_sighandler); 4346 signal (w->signum, ev_sighandler);
2498#else 4347# else
2499 struct sigaction sa; 4348 struct sigaction sa;
4349
4350 evpipe_init (EV_A);
4351
2500 sa.sa_handler = ev_sighandler; 4352 sa.sa_handler = ev_sighandler;
2501 sigfillset (&sa.sa_mask); 4353 sigfillset (&sa.sa_mask);
2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4354 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2503 sigaction (w->signum, &sa, 0); 4355 sigaction (w->signum, &sa, 0);
4356
4357 if (origflags & EVFLAG_NOSIGMASK)
4358 {
4359 sigemptyset (&sa.sa_mask);
4360 sigaddset (&sa.sa_mask, w->signum);
4361 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4362 }
2504#endif 4363#endif
2505 } 4364 }
2506 4365
2507 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
2508} 4367}
2509 4368
2510void noinline 4369ecb_noinline
4370void
2511ev_signal_stop (EV_P_ ev_signal *w) 4371ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2512{ 4372{
2513 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
2515 return; 4375 return;
2516 4376
2517 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2518 4378
2519 wlist_del (&signals [w->signum - 1].head, (WL)w); 4379 wlist_del (&signals [w->signum - 1].head, (WL)w);
2520 ev_stop (EV_A_ (W)w); 4380 ev_stop (EV_A_ (W)w);
2521 4381
2522 if (!signals [w->signum - 1].head) 4382 if (!signals [w->signum - 1].head)
4383 {
4384#if EV_MULTIPLICITY
4385 signals [w->signum - 1].loop = 0; /* unattach from signal */
4386#endif
4387#if EV_USE_SIGNALFD
4388 if (sigfd >= 0)
4389 {
4390 sigset_t ss;
4391
4392 sigemptyset (&ss);
4393 sigaddset (&ss, w->signum);
4394 sigdelset (&sigfd_set, w->signum);
4395
4396 signalfd (sigfd, &sigfd_set, 0);
4397 sigprocmask (SIG_UNBLOCK, &ss, 0);
4398 }
4399 else
4400#endif
2523 signal (w->signum, SIG_DFL); 4401 signal (w->signum, SIG_DFL);
4402 }
2524 4403
2525 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
2526} 4405}
2527 4406
4407#endif
4408
4409#if EV_CHILD_ENABLE
4410
2528void 4411void
2529ev_child_start (EV_P_ ev_child *w) 4412ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2530{ 4413{
2531#if EV_MULTIPLICITY 4414#if EV_MULTIPLICITY
2532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4415 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2533#endif 4416#endif
2534 if (expect_false (ev_is_active (w))) 4417 if (ecb_expect_false (ev_is_active (w)))
2535 return; 4418 return;
2536 4419
2537 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2538 4421
2539 ev_start (EV_A_ (W)w, 1); 4422 ev_start (EV_A_ (W)w, 1);
2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4423 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2541 4424
2542 EV_FREQUENT_CHECK; 4425 EV_FREQUENT_CHECK;
2543} 4426}
2544 4427
2545void 4428void
2546ev_child_stop (EV_P_ ev_child *w) 4429ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2547{ 4430{
2548 clear_pending (EV_A_ (W)w); 4431 clear_pending (EV_A_ (W)w);
2549 if (expect_false (!ev_is_active (w))) 4432 if (ecb_expect_false (!ev_is_active (w)))
2550 return; 4433 return;
2551 4434
2552 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
2553 4436
2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4437 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2555 ev_stop (EV_A_ (W)w); 4438 ev_stop (EV_A_ (W)w);
2556 4439
2557 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
2558} 4441}
4442
4443#endif
2559 4444
2560#if EV_STAT_ENABLE 4445#if EV_STAT_ENABLE
2561 4446
2562# ifdef _WIN32 4447# ifdef _WIN32
2563# undef lstat 4448# undef lstat
… …
2566 4451
2567#define DEF_STAT_INTERVAL 5.0074891 4452#define DEF_STAT_INTERVAL 5.0074891
2568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4453#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2569#define MIN_STAT_INTERVAL 0.1074891 4454#define MIN_STAT_INTERVAL 0.1074891
2570 4455
2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4456ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2572 4457
2573#if EV_USE_INOTIFY 4458#if EV_USE_INOTIFY
2574# define EV_INOTIFY_BUFSIZE 8192
2575 4459
2576static void noinline 4460/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4461# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4462
4463ecb_noinline
4464static void
2577infy_add (EV_P_ ev_stat *w) 4465infy_add (EV_P_ ev_stat *w)
2578{ 4466{
2579 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); 4467 w->wd = inotify_add_watch (fs_fd, w->path,
4468 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4469 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4470 | IN_DONT_FOLLOW | IN_MASK_ADD);
2580 4471
2581 if (w->wd < 0) 4472 if (w->wd >= 0)
4473 {
4474 struct statfs sfs;
4475
4476 /* now local changes will be tracked by inotify, but remote changes won't */
4477 /* unless the filesystem is known to be local, we therefore still poll */
4478 /* also do poll on <2.6.25, but with normal frequency */
4479
4480 if (!fs_2625)
4481 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4482 else if (!statfs (w->path, &sfs)
4483 && (sfs.f_type == 0x1373 /* devfs */
4484 || sfs.f_type == 0x4006 /* fat */
4485 || sfs.f_type == 0x4d44 /* msdos */
4486 || sfs.f_type == 0xEF53 /* ext2/3 */
4487 || sfs.f_type == 0x72b6 /* jffs2 */
4488 || sfs.f_type == 0x858458f6 /* ramfs */
4489 || sfs.f_type == 0x5346544e /* ntfs */
4490 || sfs.f_type == 0x3153464a /* jfs */
4491 || sfs.f_type == 0x9123683e /* btrfs */
4492 || sfs.f_type == 0x52654973 /* reiser3 */
4493 || sfs.f_type == 0x01021994 /* tmpfs */
4494 || sfs.f_type == 0x58465342 /* xfs */))
4495 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4496 else
4497 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2582 { 4498 }
4499 else
4500 {
4501 /* can't use inotify, continue to stat */
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4502 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585 4503
2586 /* monitor some parent directory for speedup hints */ 4504 /* if path is not there, monitor some parent directory for speedup hints */
2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4505 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2588 /* but an efficiency issue only */ 4506 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4507 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 { 4508 {
2591 char path [4096]; 4509 char path [4096];
… …
2601 if (!pend || pend == path) 4519 if (!pend || pend == path)
2602 break; 4520 break;
2603 4521
2604 *pend = 0; 4522 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask); 4523 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 } 4524 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4525 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 } 4526 }
2609 } 4527 }
2610 4528
2611 if (w->wd >= 0) 4529 if (w->wd >= 0)
2612 {
2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4530 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2614 4531
2615 /* now local changes will be tracked by inotify, but remote changes won't */ 4532 /* now re-arm timer, if required */
2616 /* unless the filesystem it known to be local, we therefore still poll */ 4533 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer); 4534 ev_timer_again (EV_A_ &w->timer);
2631 } 4535 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2632} 4536}
2633 4537
2634static void noinline 4538ecb_noinline
4539static void
2635infy_del (EV_P_ ev_stat *w) 4540infy_del (EV_P_ ev_stat *w)
2636{ 4541{
2637 int slot; 4542 int slot;
2638 int wd = w->wd; 4543 int wd = w->wd;
2639 4544
2640 if (wd < 0) 4545 if (wd < 0)
2641 return; 4546 return;
2642 4547
2643 w->wd = -2; 4548 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4549 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w); 4550 wlist_del (&fs_hash [slot].head, (WL)w);
2646 4551
2647 /* remove this watcher, if others are watching it, they will rearm */ 4552 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd); 4553 inotify_rm_watch (fs_fd, wd);
2649} 4554}
2650 4555
2651static void noinline 4556ecb_noinline
4557static void
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4558infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{ 4559{
2654 if (slot < 0) 4560 if (slot < 0)
2655 /* overflow, need to check for all hash slots */ 4561 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4562 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2657 infy_wd (EV_A_ slot, wd, ev); 4563 infy_wd (EV_A_ slot, wd, ev);
2658 else 4564 else
2659 { 4565 {
2660 WL w_; 4566 WL w_;
2661 4567
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4568 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2663 { 4569 {
2664 ev_stat *w = (ev_stat *)w_; 4570 ev_stat *w = (ev_stat *)w_;
2665 w_ = w_->next; /* lets us remove this watcher and all before it */ 4571 w_ = w_->next; /* lets us remove this watcher and all before it */
2666 4572
2667 if (w->wd == wd || wd == -1) 4573 if (w->wd == wd || wd == -1)
2668 { 4574 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4575 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 { 4576 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4577 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2672 w->wd = -1; 4578 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */ 4579 infy_add (EV_A_ w); /* re-add, no matter what */
2674 } 4580 }
2675 4581
2676 stat_timer_cb (EV_A_ &w->timer, 0); 4582 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2681 4587
2682static void 4588static void
2683infy_cb (EV_P_ ev_io *w, int revents) 4589infy_cb (EV_P_ ev_io *w, int revents)
2684{ 4590{
2685 char buf [EV_INOTIFY_BUFSIZE]; 4591 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs; 4592 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf)); 4593 int len = read (fs_fd, buf, sizeof (buf));
2689 4594
2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4595 for (ofs = 0; ofs < len; )
4596 {
4597 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2691 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4598 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4599 ofs += sizeof (struct inotify_event) + ev->len;
4600 }
2692} 4601}
2693 4602
2694inline_size void 4603inline_size ecb_cold
4604void
2695check_2625 (EV_P) 4605ev_check_2625 (EV_P)
2696{ 4606{
2697 /* kernels < 2.6.25 are borked 4607 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4608 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */ 4609 */
2700 struct utsname buf; 4610 if (ev_linux_version () < 0x020619)
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return; 4611 return;
2705 4612
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1; 4613 fs_2625 = 1;
4614}
4615
4616inline_size int
4617infy_newfd (void)
4618{
4619#if defined IN_CLOEXEC && defined IN_NONBLOCK
4620 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4621 if (fd >= 0)
4622 return fd;
4623#endif
4624 return inotify_init ();
2715} 4625}
2716 4626
2717inline_size void 4627inline_size void
2718infy_init (EV_P) 4628infy_init (EV_P)
2719{ 4629{
2720 if (fs_fd != -2) 4630 if (fs_fd != -2)
2721 return; 4631 return;
2722 4632
2723 fs_fd = -1; 4633 fs_fd = -1;
2724 4634
2725 check_2625 (EV_A); 4635 ev_check_2625 (EV_A);
2726 4636
2727 fs_fd = inotify_init (); 4637 fs_fd = infy_newfd ();
2728 4638
2729 if (fs_fd >= 0) 4639 if (fs_fd >= 0)
2730 { 4640 {
4641 fd_intern (fs_fd);
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4642 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI); 4643 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w); 4644 ev_io_start (EV_A_ &fs_w);
4645 ev_unref (EV_A);
2734 } 4646 }
2735} 4647}
2736 4648
2737inline_size void 4649inline_size void
2738infy_fork (EV_P) 4650infy_fork (EV_P)
… …
2740 int slot; 4652 int slot;
2741 4653
2742 if (fs_fd < 0) 4654 if (fs_fd < 0)
2743 return; 4655 return;
2744 4656
4657 ev_ref (EV_A);
4658 ev_io_stop (EV_A_ &fs_w);
2745 close (fs_fd); 4659 close (fs_fd);
2746 fs_fd = inotify_init (); 4660 fs_fd = infy_newfd ();
2747 4661
4662 if (fs_fd >= 0)
4663 {
4664 fd_intern (fs_fd);
4665 ev_io_set (&fs_w, fs_fd, EV_READ);
4666 ev_io_start (EV_A_ &fs_w);
4667 ev_unref (EV_A);
4668 }
4669
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4670 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2749 { 4671 {
2750 WL w_ = fs_hash [slot].head; 4672 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0; 4673 fs_hash [slot].head = 0;
2752 4674
2753 while (w_) 4675 while (w_)
… …
2758 w->wd = -1; 4680 w->wd = -1;
2759 4681
2760 if (fs_fd >= 0) 4682 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */ 4683 infy_add (EV_A_ w); /* re-add, no matter what */
2762 else 4684 else
4685 {
4686 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4687 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2763 ev_timer_again (EV_A_ &w->timer); 4688 ev_timer_again (EV_A_ &w->timer);
4689 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4690 }
2764 } 4691 }
2765 } 4692 }
2766} 4693}
2767 4694
2768#endif 4695#endif
… …
2772#else 4699#else
2773# define EV_LSTAT(p,b) lstat (p, b) 4700# define EV_LSTAT(p,b) lstat (p, b)
2774#endif 4701#endif
2775 4702
2776void 4703void
2777ev_stat_stat (EV_P_ ev_stat *w) 4704ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2778{ 4705{
2779 if (lstat (w->path, &w->attr) < 0) 4706 if (lstat (w->path, &w->attr) < 0)
2780 w->attr.st_nlink = 0; 4707 w->attr.st_nlink = 0;
2781 else if (!w->attr.st_nlink) 4708 else if (!w->attr.st_nlink)
2782 w->attr.st_nlink = 1; 4709 w->attr.st_nlink = 1;
2783} 4710}
2784 4711
2785static void noinline 4712ecb_noinline
4713static void
2786stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4714stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2787{ 4715{
2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4716 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2789 4717
2790 /* we copy this here each the time so that */ 4718 ev_statdata prev = w->attr;
2791 /* prev has the old value when the callback gets invoked */
2792 w->prev = w->attr;
2793 ev_stat_stat (EV_A_ w); 4719 ev_stat_stat (EV_A_ w);
2794 4720
2795 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4721 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2796 if ( 4722 if (
2797 w->prev.st_dev != w->attr.st_dev 4723 prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino 4724 || prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode 4725 || prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink 4726 || prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid 4727 || prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid 4728 || prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev 4729 || prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size 4730 || prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime 4731 || prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime 4732 || prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime 4733 || prev.st_ctime != w->attr.st_ctime
2808 ) { 4734 ) {
4735 /* we only update w->prev on actual differences */
4736 /* in case we test more often than invoke the callback, */
4737 /* to ensure that prev is always different to attr */
4738 w->prev = prev;
4739
2809 #if EV_USE_INOTIFY 4740 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0) 4741 if (fs_fd >= 0)
2811 { 4742 {
2812 infy_del (EV_A_ w); 4743 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w); 4744 infy_add (EV_A_ w);
… …
2818 ev_feed_event (EV_A_ w, EV_STAT); 4749 ev_feed_event (EV_A_ w, EV_STAT);
2819 } 4750 }
2820} 4751}
2821 4752
2822void 4753void
2823ev_stat_start (EV_P_ ev_stat *w) 4754ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2824{ 4755{
2825 if (expect_false (ev_is_active (w))) 4756 if (ecb_expect_false (ev_is_active (w)))
2826 return; 4757 return;
2827 4758
2828 ev_stat_stat (EV_A_ w); 4759 ev_stat_stat (EV_A_ w);
2829 4760
2830 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4761 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2838 4769
2839 if (fs_fd >= 0) 4770 if (fs_fd >= 0)
2840 infy_add (EV_A_ w); 4771 infy_add (EV_A_ w);
2841 else 4772 else
2842#endif 4773#endif
4774 {
2843 ev_timer_again (EV_A_ &w->timer); 4775 ev_timer_again (EV_A_ &w->timer);
4776 ev_unref (EV_A);
4777 }
2844 4778
2845 ev_start (EV_A_ (W)w, 1); 4779 ev_start (EV_A_ (W)w, 1);
2846 4780
2847 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
2848} 4782}
2849 4783
2850void 4784void
2851ev_stat_stop (EV_P_ ev_stat *w) 4785ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2852{ 4786{
2853 clear_pending (EV_A_ (W)w); 4787 clear_pending (EV_A_ (W)w);
2854 if (expect_false (!ev_is_active (w))) 4788 if (ecb_expect_false (!ev_is_active (w)))
2855 return; 4789 return;
2856 4790
2857 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
2858 4792
2859#if EV_USE_INOTIFY 4793#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w); 4794 infy_del (EV_A_ w);
2861#endif 4795#endif
4796
4797 if (ev_is_active (&w->timer))
4798 {
4799 ev_ref (EV_A);
2862 ev_timer_stop (EV_A_ &w->timer); 4800 ev_timer_stop (EV_A_ &w->timer);
4801 }
2863 4802
2864 ev_stop (EV_A_ (W)w); 4803 ev_stop (EV_A_ (W)w);
2865 4804
2866 EV_FREQUENT_CHECK; 4805 EV_FREQUENT_CHECK;
2867} 4806}
2868#endif 4807#endif
2869 4808
2870#if EV_IDLE_ENABLE 4809#if EV_IDLE_ENABLE
2871void 4810void
2872ev_idle_start (EV_P_ ev_idle *w) 4811ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2873{ 4812{
2874 if (expect_false (ev_is_active (w))) 4813 if (ecb_expect_false (ev_is_active (w)))
2875 return; 4814 return;
2876 4815
2877 pri_adjust (EV_A_ (W)w); 4816 pri_adjust (EV_A_ (W)w);
2878 4817
2879 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
… …
2882 int active = ++idlecnt [ABSPRI (w)]; 4821 int active = ++idlecnt [ABSPRI (w)];
2883 4822
2884 ++idleall; 4823 ++idleall;
2885 ev_start (EV_A_ (W)w, active); 4824 ev_start (EV_A_ (W)w, active);
2886 4825
2887 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4826 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2888 idles [ABSPRI (w)][active - 1] = w; 4827 idles [ABSPRI (w)][active - 1] = w;
2889 } 4828 }
2890 4829
2891 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
2892} 4831}
2893 4832
2894void 4833void
2895ev_idle_stop (EV_P_ ev_idle *w) 4834ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2896{ 4835{
2897 clear_pending (EV_A_ (W)w); 4836 clear_pending (EV_A_ (W)w);
2898 if (expect_false (!ev_is_active (w))) 4837 if (ecb_expect_false (!ev_is_active (w)))
2899 return; 4838 return;
2900 4839
2901 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
2902 4841
2903 { 4842 {
… …
2912 4851
2913 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
2914} 4853}
2915#endif 4854#endif
2916 4855
4856#if EV_PREPARE_ENABLE
2917void 4857void
2918ev_prepare_start (EV_P_ ev_prepare *w) 4858ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2919{ 4859{
2920 if (expect_false (ev_is_active (w))) 4860 if (ecb_expect_false (ev_is_active (w)))
2921 return; 4861 return;
2922 4862
2923 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
2924 4864
2925 ev_start (EV_A_ (W)w, ++preparecnt); 4865 ev_start (EV_A_ (W)w, ++preparecnt);
2926 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4866 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2927 prepares [preparecnt - 1] = w; 4867 prepares [preparecnt - 1] = w;
2928 4868
2929 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
2930} 4870}
2931 4871
2932void 4872void
2933ev_prepare_stop (EV_P_ ev_prepare *w) 4873ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2934{ 4874{
2935 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w))) 4876 if (ecb_expect_false (!ev_is_active (w)))
2937 return; 4877 return;
2938 4878
2939 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
2940 4880
2941 { 4881 {
… …
2947 4887
2948 ev_stop (EV_A_ (W)w); 4888 ev_stop (EV_A_ (W)w);
2949 4889
2950 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
2951} 4891}
4892#endif
2952 4893
4894#if EV_CHECK_ENABLE
2953void 4895void
2954ev_check_start (EV_P_ ev_check *w) 4896ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2955{ 4897{
2956 if (expect_false (ev_is_active (w))) 4898 if (ecb_expect_false (ev_is_active (w)))
2957 return; 4899 return;
2958 4900
2959 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
2960 4902
2961 ev_start (EV_A_ (W)w, ++checkcnt); 4903 ev_start (EV_A_ (W)w, ++checkcnt);
2962 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4904 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2963 checks [checkcnt - 1] = w; 4905 checks [checkcnt - 1] = w;
2964 4906
2965 EV_FREQUENT_CHECK; 4907 EV_FREQUENT_CHECK;
2966} 4908}
2967 4909
2968void 4910void
2969ev_check_stop (EV_P_ ev_check *w) 4911ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2970{ 4912{
2971 clear_pending (EV_A_ (W)w); 4913 clear_pending (EV_A_ (W)w);
2972 if (expect_false (!ev_is_active (w))) 4914 if (ecb_expect_false (!ev_is_active (w)))
2973 return; 4915 return;
2974 4916
2975 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
2976 4918
2977 { 4919 {
… …
2983 4925
2984 ev_stop (EV_A_ (W)w); 4926 ev_stop (EV_A_ (W)w);
2985 4927
2986 EV_FREQUENT_CHECK; 4928 EV_FREQUENT_CHECK;
2987} 4929}
4930#endif
2988 4931
2989#if EV_EMBED_ENABLE 4932#if EV_EMBED_ENABLE
2990void noinline 4933ecb_noinline
4934void
2991ev_embed_sweep (EV_P_ ev_embed *w) 4935ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2992{ 4936{
2993 ev_loop (w->other, EVLOOP_NONBLOCK); 4937 ev_run (w->other, EVRUN_NOWAIT);
2994} 4938}
2995 4939
2996static void 4940static void
2997embed_io_cb (EV_P_ ev_io *io, int revents) 4941embed_io_cb (EV_P_ ev_io *io, int revents)
2998{ 4942{
2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4943 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3000 4944
3001 if (ev_cb (w)) 4945 if (ev_cb (w))
3002 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4946 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3003 else 4947 else
3004 ev_loop (w->other, EVLOOP_NONBLOCK); 4948 ev_run (w->other, EVRUN_NOWAIT);
3005} 4949}
3006 4950
3007static void 4951static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4952embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{ 4953{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4954 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011 4955
3012 { 4956 {
3013 struct ev_loop *loop = w->other; 4957 EV_P = w->other;
3014 4958
3015 while (fdchangecnt) 4959 while (fdchangecnt)
3016 { 4960 {
3017 fd_reify (EV_A); 4961 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4962 ev_run (EV_A_ EVRUN_NOWAIT);
3019 } 4963 }
3020 } 4964 }
3021} 4965}
3022 4966
3023static void 4967static void
… …
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4970 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027 4971
3028 ev_embed_stop (EV_A_ w); 4972 ev_embed_stop (EV_A_ w);
3029 4973
3030 { 4974 {
3031 struct ev_loop *loop = w->other; 4975 EV_P = w->other;
3032 4976
3033 ev_loop_fork (EV_A); 4977 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4978 ev_run (EV_A_ EVRUN_NOWAIT);
3035 } 4979 }
3036 4980
3037 ev_embed_start (EV_A_ w); 4981 ev_embed_start (EV_A_ w);
3038} 4982}
3039 4983
… …
3044 ev_idle_stop (EV_A_ idle); 4988 ev_idle_stop (EV_A_ idle);
3045} 4989}
3046#endif 4990#endif
3047 4991
3048void 4992void
3049ev_embed_start (EV_P_ ev_embed *w) 4993ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3050{ 4994{
3051 if (expect_false (ev_is_active (w))) 4995 if (ecb_expect_false (ev_is_active (w)))
3052 return; 4996 return;
3053 4997
3054 { 4998 {
3055 struct ev_loop *loop = w->other; 4999 EV_P = w->other;
3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5000 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 5001 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3058 } 5002 }
3059 5003
3060 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
… …
3075 5019
3076 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
3077} 5021}
3078 5022
3079void 5023void
3080ev_embed_stop (EV_P_ ev_embed *w) 5024ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3081{ 5025{
3082 clear_pending (EV_A_ (W)w); 5026 clear_pending (EV_A_ (W)w);
3083 if (expect_false (!ev_is_active (w))) 5027 if (ecb_expect_false (!ev_is_active (w)))
3084 return; 5028 return;
3085 5029
3086 EV_FREQUENT_CHECK; 5030 EV_FREQUENT_CHECK;
3087 5031
3088 ev_io_stop (EV_A_ &w->io); 5032 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare); 5033 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork); 5034 ev_fork_stop (EV_A_ &w->fork);
3091 5035
5036 ev_stop (EV_A_ (W)w);
5037
3092 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3093} 5039}
3094#endif 5040#endif
3095 5041
3096#if EV_FORK_ENABLE 5042#if EV_FORK_ENABLE
3097void 5043void
3098ev_fork_start (EV_P_ ev_fork *w) 5044ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3099{ 5045{
3100 if (expect_false (ev_is_active (w))) 5046 if (ecb_expect_false (ev_is_active (w)))
3101 return; 5047 return;
3102 5048
3103 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3104 5050
3105 ev_start (EV_A_ (W)w, ++forkcnt); 5051 ev_start (EV_A_ (W)w, ++forkcnt);
3106 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5052 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3107 forks [forkcnt - 1] = w; 5053 forks [forkcnt - 1] = w;
3108 5054
3109 EV_FREQUENT_CHECK; 5055 EV_FREQUENT_CHECK;
3110} 5056}
3111 5057
3112void 5058void
3113ev_fork_stop (EV_P_ ev_fork *w) 5059ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3114{ 5060{
3115 clear_pending (EV_A_ (W)w); 5061 clear_pending (EV_A_ (W)w);
3116 if (expect_false (!ev_is_active (w))) 5062 if (ecb_expect_false (!ev_is_active (w)))
3117 return; 5063 return;
3118 5064
3119 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
3120 5066
3121 { 5067 {
… …
3129 5075
3130 EV_FREQUENT_CHECK; 5076 EV_FREQUENT_CHECK;
3131} 5077}
3132#endif 5078#endif
3133 5079
5080#if EV_CLEANUP_ENABLE
5081void
5082ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5083{
5084 if (ecb_expect_false (ev_is_active (w)))
5085 return;
5086
5087 EV_FREQUENT_CHECK;
5088
5089 ev_start (EV_A_ (W)w, ++cleanupcnt);
5090 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5091 cleanups [cleanupcnt - 1] = w;
5092
5093 /* cleanup watchers should never keep a refcount on the loop */
5094 ev_unref (EV_A);
5095 EV_FREQUENT_CHECK;
5096}
5097
5098void
5099ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5100{
5101 clear_pending (EV_A_ (W)w);
5102 if (ecb_expect_false (!ev_is_active (w)))
5103 return;
5104
5105 EV_FREQUENT_CHECK;
5106 ev_ref (EV_A);
5107
5108 {
5109 int active = ev_active (w);
5110
5111 cleanups [active - 1] = cleanups [--cleanupcnt];
5112 ev_active (cleanups [active - 1]) = active;
5113 }
5114
5115 ev_stop (EV_A_ (W)w);
5116
5117 EV_FREQUENT_CHECK;
5118}
5119#endif
5120
3134#if EV_ASYNC_ENABLE 5121#if EV_ASYNC_ENABLE
3135void 5122void
3136ev_async_start (EV_P_ ev_async *w) 5123ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3137{ 5124{
3138 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
3139 return; 5126 return;
3140 5127
5128 w->sent = 0;
5129
3141 evpipe_init (EV_A); 5130 evpipe_init (EV_A);
3142 5131
3143 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3144 5133
3145 ev_start (EV_A_ (W)w, ++asynccnt); 5134 ev_start (EV_A_ (W)w, ++asynccnt);
3146 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5135 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3147 asyncs [asynccnt - 1] = w; 5136 asyncs [asynccnt - 1] = w;
3148 5137
3149 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3150} 5139}
3151 5140
3152void 5141void
3153ev_async_stop (EV_P_ ev_async *w) 5142ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3154{ 5143{
3155 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3157 return; 5146 return;
3158 5147
3159 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3160 5149
3161 { 5150 {
… …
3169 5158
3170 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
3171} 5160}
3172 5161
3173void 5162void
3174ev_async_send (EV_P_ ev_async *w) 5163ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3175{ 5164{
3176 w->sent = 1; 5165 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync); 5166 evpipe_write (EV_A_ &async_pending);
3178} 5167}
3179#endif 5168#endif
3180 5169
3181/*****************************************************************************/ 5170/*****************************************************************************/
3182 5171
… …
3216 5205
3217 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5206 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3218} 5207}
3219 5208
3220void 5209void
3221ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5210ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3222{ 5211{
3223 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5212 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3224
3225 if (expect_false (!once))
3226 {
3227 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3228 return;
3229 }
3230 5213
3231 once->cb = cb; 5214 once->cb = cb;
3232 once->arg = arg; 5215 once->arg = arg;
3233 5216
3234 ev_init (&once->io, once_cb_io); 5217 ev_init (&once->io, once_cb_io);
… …
3247} 5230}
3248 5231
3249/*****************************************************************************/ 5232/*****************************************************************************/
3250 5233
3251#if EV_WALK_ENABLE 5234#if EV_WALK_ENABLE
5235ecb_cold
3252void 5236void
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5237ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3254{ 5238{
3255 int i, j; 5239 int i, j;
3256 ev_watcher_list *wl, *wn; 5240 ev_watcher_list *wl, *wn;
3257 5241
3258 if (types & (EV_IO | EV_EMBED)) 5242 if (types & (EV_IO | EV_EMBED))
… …
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5285 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif 5286#endif
3303 5287
3304#if EV_IDLE_ENABLE 5288#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE) 5289 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; ) 5290 for (j = NUMPRI; j--; )
3307 for (i = idlecnt [j]; i--; ) 5291 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]); 5292 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif 5293#endif
3310 5294
3311#if EV_FORK_ENABLE 5295#if EV_FORK_ENABLE
… …
3319 if (types & EV_ASYNC) 5303 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; ) 5304 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]); 5305 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif 5306#endif
3323 5307
5308#if EV_PREPARE_ENABLE
3324 if (types & EV_PREPARE) 5309 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; ) 5310 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE 5311# if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb) 5312 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif 5313# endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]); 5314 cb (EV_A_ EV_PREPARE, prepares [i]);
5315#endif
3330 5316
5317#if EV_CHECK_ENABLE
3331 if (types & EV_CHECK) 5318 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; ) 5319 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]); 5320 cb (EV_A_ EV_CHECK, checks [i]);
5321#endif
3334 5322
5323#if EV_SIGNAL_ENABLE
3335 if (types & EV_SIGNAL) 5324 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i) 5325 for (i = 0; i < EV_NSIG - 1; ++i)
3337 for (wl = signals [i].head; wl; ) 5326 for (wl = signals [i].head; wl; )
3338 { 5327 {
3339 wn = wl->next; 5328 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl); 5329 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn; 5330 wl = wn;
3342 } 5331 }
5332#endif
3343 5333
5334#if EV_CHILD_ENABLE
3344 if (types & EV_CHILD) 5335 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; ) 5336 for (i = (EV_PID_HASHSIZE); i--; )
3346 for (wl = childs [i]; wl; ) 5337 for (wl = childs [i]; wl; )
3347 { 5338 {
3348 wn = wl->next; 5339 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl); 5340 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn; 5341 wl = wn;
3351 } 5342 }
5343#endif
3352/* EV_STAT 0x00001000 /* stat data changed */ 5344/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5345/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354} 5346}
3355#endif 5347#endif
3356 5348
3357#if EV_MULTIPLICITY 5349#if EV_MULTIPLICITY
3358 #include "ev_wrap.h" 5350 #include "ev_wrap.h"
3359#endif 5351#endif
3360 5352
3361#ifdef __cplusplus
3362}
3363#endif
3364

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