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Comparing libev/ev.c (file contents):
Revision 1.302 by root, Thu Jul 16 15:08:08 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
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/*****************************************************************************/
395 1686
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1688
398#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
400#else 1691#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1693#endif
403 1694
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1696
407typedef ev_watcher *W; 1697typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
410 1700
411#define ev_active(w) ((W)(w))->active 1701#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1702#define ev_at(w) ((WT)(w))->at
413 1703
414#if EV_USE_REALTIME 1704#if EV_USE_REALTIME
415/* 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 */
416/* giving it a reasonably high chance of working on typical architetcures */ 1706/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1707static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1708#endif
419 1709
420#if EV_USE_MONOTONIC 1710#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1711static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1712#endif
423 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
424#ifdef _WIN32 1724#ifdef _WIN32
425# include "ev_win32.c" 1725# include "ev_win32.c"
426#endif 1726#endif
427 1727
428/*****************************************************************************/ 1728/*****************************************************************************/
429 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
430static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1836
1837ecb_cold
432void 1838void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1840{
435 syserr_cb = cb; 1841 syserr_cb = cb;
436} 1842}
437 1843
438static void noinline 1844ecb_noinline ecb_cold
1845static void
439ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
440{ 1847{
441 if (!msg) 1848 if (!msg)
442 msg = "(libev) system error"; 1849 msg = "(libev) system error";
443 1850
444 if (syserr_cb) 1851 if (syserr_cb)
445 syserr_cb (msg); 1852 syserr_cb (msg);
446 else 1853 else
447 { 1854 {
1855#if EV_AVOID_STDIO
1856 ev_printerr (msg);
1857 ev_printerr (": ");
1858 ev_printerr (strerror (errno));
1859 ev_printerr ("\n");
1860#else
448 perror (msg); 1861 perror (msg);
1862#endif
449 abort (); 1863 abort ();
450 } 1864 }
451} 1865}
452 1866
453static void * 1867static void *
454ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1869{
456 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
457 * 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
458 * 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.
459 */ 1875 */
460 1876
461 if (size) 1877 if (size)
462 return realloc (ptr, size); 1878 return realloc (ptr, size);
463 1879
464 free (ptr); 1880 free (ptr);
465 return 0; 1881 return 0;
466} 1882}
467 1883
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1885
1886ecb_cold
470void 1887void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1889{
473 alloc = cb; 1890 alloc = cb;
474} 1891}
475 1892
476inline_speed void * 1893inline_speed void *
… …
478{ 1895{
479 ptr = alloc (ptr, size); 1896 ptr = alloc (ptr, size);
480 1897
481 if (!ptr && size) 1898 if (!ptr && size)
482 { 1899 {
1900#if EV_AVOID_STDIO
1901 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1902#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1903 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1904#endif
484 abort (); 1905 abort ();
485 } 1906 }
486 1907
487 return ptr; 1908 return ptr;
488} 1909}
… …
499typedef struct 1920typedef struct
500{ 1921{
501 WL head; 1922 WL head;
502 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
503 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1924 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
504 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 */
505 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
506#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1929#endif
509#if EV_SELECT_IS_WINSOCKET 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1931 SOCKET handle;
1932#endif
1933#if EV_USE_IOCP
1934 OVERLAPPED or, ow;
511#endif 1935#endif
512} ANFD; 1936} ANFD;
513 1937
514/* stores the pending event set for a given watcher */ 1938/* stores the pending event set for a given watcher */
515typedef struct 1939typedef struct
… …
557 #undef VAR 1981 #undef VAR
558 }; 1982 };
559 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
560 1984
561 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
562 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 */
563 1987
564#else 1988#else
565 1989
566 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 */
567 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1992 #include "ev_vars.h"
569 #undef VAR 1993 #undef VAR
570 1994
571 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
572 1996
573#endif 1997#endif
574 1998
575#if EV_MINIMAL < 2 1999#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2000# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2001# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 2003#else
580# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 2007#endif
584 2008
585#define EVUNLOOP_RECURSE 0x80 2009#define EVBREAK_RECURSE 0x80
586 2010
587/*****************************************************************************/ 2011/*****************************************************************************/
588 2012
589#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
590ev_tstamp 2014ev_tstamp
591ev_time (void) 2015ev_time (void) EV_NOEXCEPT
592{ 2016{
593#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
595 { 2019 {
596 struct timespec ts; 2020 struct timespec ts;
597 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
598 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
599 } 2023 }
600#endif 2024#endif
601 2025
2026 {
602 struct timeval tv; 2027 struct timeval tv;
603 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
604 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
605} 2031}
606#endif 2032#endif
607 2033
608inline_size ev_tstamp 2034inline_size ev_tstamp
609get_clock (void) 2035get_clock (void)
610{ 2036{
611#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
612 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
613 { 2039 {
614 struct timespec ts; 2040 struct timespec ts;
615 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
616 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
617 } 2043 }
618#endif 2044#endif
619 2045
620 return ev_time (); 2046 return ev_time ();
621} 2047}
622 2048
623#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
624ev_tstamp 2050ev_tstamp
625ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
626{ 2052{
627 return ev_rt_now; 2053 return ev_rt_now;
628} 2054}
629#endif 2055#endif
630 2056
631void 2057void
632ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
633{ 2059{
634 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
635 { 2061 {
636#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
637 struct timespec ts; 2063 struct timespec ts;
638 2064
639 ts.tv_sec = (time_t)delay; 2065 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
643#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) */
644 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
645#else 2071#else
646 struct timeval tv; 2072 struct timeval tv;
647
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650 2073
651 /* 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 */
652 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 2076 /* by older ones */
2077 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 2078 select (0, 0, 0, 0, &tv);
655#endif 2079#endif
656 } 2080 }
657} 2081}
658 2082
659/*****************************************************************************/ 2083/*****************************************************************************/
660 2084
661#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 */
662 2086
663/* find a suitable new size for the given array, */ 2087/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 2088/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 2089inline_size int
666array_nextsize (int elem, int cur, int cnt) 2090array_nextsize (int elem, int cur, int cnt)
667{ 2091{
668 int ncur = cur + 1; 2092 int ncur = cur + 1;
669 2093
670 do 2094 do
671 ncur <<= 1; 2095 ncur <<= 1;
672 while (cnt > ncur); 2096 while (cnt > ncur);
673 2097
674 /* 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 */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 2100 {
677 ncur *= elem; 2101 ncur *= elem;
678 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);
679 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
681 } 2105 }
682 2106
683 return ncur; 2107 return ncur;
684} 2108}
685 2109
686static noinline void * 2110ecb_noinline ecb_cold
2111static void *
687array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
688{ 2113{
689 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
691} 2116}
692 2117
2118#define array_needsize_noinit(base,offset,count)
2119
693#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
695 2122
696#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
698 { \ 2125 { \
699 int ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
703 } 2130 }
704 2131
705#if 0 2132#if 0
706#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
707 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
716 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
717 2144
718/*****************************************************************************/ 2145/*****************************************************************************/
719 2146
720/* dummy callback for pending events */ 2147/* dummy callback for pending events */
721static void noinline 2148ecb_noinline
2149static void
722pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 2151{
724} 2152}
725 2153
726void noinline 2154ecb_noinline
2155void
727ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
728{ 2157{
729 W w_ = (W)w; 2158 W w_ = (W)w;
730 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
731 2160
732 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
733 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
734 else 2163 else
735 { 2164 {
736 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
738 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
740 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
741} 2172}
742 2173
743inline_speed void 2174inline_speed void
744feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
745{ 2176{
746 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
747 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
748} 2179}
749 2180
750inline_size void 2181inline_size void
751feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
765} 2196}
766 2197
767/*****************************************************************************/ 2198/*****************************************************************************/
768 2199
769inline_speed void 2200inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 2201fd_event_nocheck (EV_P_ int fd, int revents)
771{ 2202{
772 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
773 ev_io *w; 2204 ev_io *w;
774 2205
775 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)
… …
786inline_speed void 2217inline_speed void
787fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
788{ 2219{
789 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
790 2221
791 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
793} 2224}
794 2225
795void 2226void
796ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
797{ 2228{
798 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
800} 2231}
801 2232
802/* make sure the external fd watch events are in-sync */ 2233/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 2234/* with the kernel/libev internal state */
804inline_size void 2235inline_size void
805fd_reify (EV_P) 2236fd_reify (EV_P)
806{ 2237{
807 int i; 2238 int i;
808 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
809 for (i = 0; i < fdchangecnt; ++i) 2265 for (i = 0; i < fdchangecnt; ++i)
810 { 2266 {
811 int fd = fdchanges [i]; 2267 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 2268 ANFD *anfd = anfds + fd;
813 ev_io *w; 2269 ev_io *w;
814 2270
815 unsigned char events = 0; 2271 unsigned char o_events = anfd->events;
2272 unsigned char o_reify = anfd->reify;
816 2273
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2274 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 2275
820#if EV_SELECT_IS_WINSOCKET 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 2277 {
823 unsigned long arg; 2278 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 2279
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2280 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 2281 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 2282
828 #endif 2283 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2284 o_reify = EV__IOFDSET; /* actually |= */
830 } 2285 }
831#endif
832 2286
833 { 2287 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 2288 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 2289 }
844 2290
845 fdchangecnt = 0; 2291 fdchangecnt = 0;
846} 2292}
847 2293
848/* something about the given fd changed */ 2294/* something about the given fd changed */
849inline_size void 2295inline_size
2296void
850fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
851{ 2298{
852 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
853 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
854 2301
855 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
856 { 2303 {
857 ++fdchangecnt; 2304 ++fdchangecnt;
858 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
859 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
860 } 2307 }
861} 2308}
862 2309
863/* 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 */
864inline_speed void 2311inline_speed ecb_cold void
865fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
866{ 2313{
867 ev_io *w; 2314 ev_io *w;
868 2315
869 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 2318 ev_io_stop (EV_A_ w);
872 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);
873 } 2320 }
874} 2321}
875 2322
876/* check whether the given fd is atcually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
877inline_size int 2324inline_size ecb_cold int
878fd_valid (int fd) 2325fd_valid (int fd)
879{ 2326{
880#ifdef _WIN32 2327#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 2329#else
883 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
884#endif 2331#endif
885} 2332}
886 2333
887/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
888static void noinline 2335ecb_noinline ecb_cold
2336static void
889fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
890{ 2338{
891 int fd; 2339 int fd;
892 2340
893 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
897} 2345}
898 2346
899/* 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 */
900static void noinline 2348ecb_noinline ecb_cold
2349static void
901fd_enomem (EV_P) 2350fd_enomem (EV_P)
902{ 2351{
903 int fd; 2352 int fd;
904 2353
905 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 2355 if (anfds [fd].events)
907 { 2356 {
908 fd_kill (EV_A_ fd); 2357 fd_kill (EV_A_ fd);
909 return; 2358 break;
910 } 2359 }
911} 2360}
912 2361
913/* 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 */
914static void noinline 2363ecb_noinline
2364static void
915fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
916{ 2366{
917 int fd; 2367 int fd;
918 2368
919 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
923 anfds [fd].emask = 0; 2373 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2374 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 2375 }
926} 2376}
927 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
928/*****************************************************************************/ 2392/*****************************************************************************/
929 2393
930/* 2394/*
931 * 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
932 * 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
933 * the branching factor of the d-tree. 2397 * the branching factor of the d-tree.
934 */ 2398 */
935 2399
936/* 2400/*
… …
958 ev_tstamp minat; 2422 ev_tstamp minat;
959 ANHE *minpos; 2423 ANHE *minpos;
960 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
961 2425
962 /* find minimum child */ 2426 /* find minimum child */
963 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
964 { 2428 {
965 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
966 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));
967 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));
968 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));
969 } 2433 }
970 else if (pos < E) 2434 else if (pos < E)
971 { 2435 {
972 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
973 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));
974 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));
975 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));
976 } 2440 }
977 else 2441 else
978 break; 2442 break;
979 2443
980 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
988 2452
989 heap [k] = he; 2453 heap [k] = he;
990 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
991} 2455}
992 2456
993#else /* 4HEAP */ 2457#else /* not 4HEAP */
994 2458
995#define HEAP0 1 2459#define HEAP0 1
996#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
997#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
998 2462
… …
1004 2468
1005 for (;;) 2469 for (;;)
1006 { 2470 {
1007 int c = k << 1; 2471 int c = k << 1;
1008 2472
1009 if (c > N + HEAP0 - 1) 2473 if (c >= N + HEAP0)
1010 break; 2474 break;
1011 2475
1012 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])
1013 ? 1 : 0; 2477 ? 1 : 0;
1014 2478
… …
1050 2514
1051/* move an element suitably so it is in a correct place */ 2515/* move an element suitably so it is in a correct place */
1052inline_size void 2516inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2517adjustheap (ANHE *heap, int N, int k)
1054{ 2518{
1055 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)]))
1056 upheap (heap, k); 2520 upheap (heap, k);
1057 else 2521 else
1058 downheap (heap, N, k); 2522 downheap (heap, N, k);
1059} 2523}
1060 2524
… …
1073/*****************************************************************************/ 2537/*****************************************************************************/
1074 2538
1075/* associate signal watchers to a signal signal */ 2539/* associate signal watchers to a signal signal */
1076typedef struct 2540typedef struct
1077{ 2541{
2542 EV_ATOMIC_T pending;
2543#if EV_MULTIPLICITY
2544 EV_P;
2545#endif
1078 WL head; 2546 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2547} ANSIG;
1081 2548
1082static ANSIG *signals; 2549static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2550
1087/*****************************************************************************/ 2551/*****************************************************************************/
1088 2552
1089/* used to prepare libev internal fd's */ 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* 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
1091inline_speed void 2601inline_speed void
1092fd_intern (int fd) 2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2603{
1094#ifdef _WIN32 2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 2605
1103static void noinline 2606 if (ecb_expect_true (*flag))
1104evpipe_init (EV_P) 2607 return;
1105{ 2608
1106 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)
1107 { 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
1108#if EV_USE_EVENTFD 2625#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2626 if (evpipe [0] < 0)
1110 { 2627 {
1111 evpipe [0] = -1; 2628 uint64_t counter = 1;
1112 fd_intern (evfd); 2629 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2630 }
1115 else 2631 else
1116#endif 2632#endif
1117 { 2633 {
1118 while (pipe (evpipe)) 2634#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1120 2636 DWORD sent;
1121 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1122 fd_intern (evpipe [1]); 2638 buf.len = 1;
1123 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
1124 } 2643 }
1125
1126 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 }
1129}
1130
1131inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{
1134 if (!*flag)
1135 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1;
1139
1140#if EV_USE_EVENTFD
1141 if (evfd >= 0)
1142 {
1143 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t));
1145 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149 2644
1150 errno = old_errno; 2645 errno = old_errno;
1151 } 2646 }
1152} 2647}
1153 2648
1154/* called whenever the libev signal pipe */ 2649/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2650/* got some events (signal, async) */
1156static void 2651static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2652pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2653{
2654 int i;
2655
2656 if (revents & EV_READ)
2657 {
1159#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1161 { 2660 {
1162 uint64_t counter; 2661 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2663 }
1165 else 2664 else
1166#endif 2665#endif
1167 { 2666 {
1168 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
1169 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)
1170 } 2687 {
2688 sig_pending = 0;
1171 2689
1172 if (gotsig && ev_is_default_loop (EV_A)) 2690 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2691
1177 for (signum = signalmax; signum--; ) 2692 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2693 if (ecb_expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2695 }
2696#endif
1181 2697
1182#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1183 if (gotasync) 2699 if (async_pending)
1184 { 2700 {
1185 int i; 2701 async_pending = 0;
1186 gotasync = 0; 2702
2703 ECB_MEMORY_FENCE;
1187 2704
1188 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1190 { 2707 {
1191 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2711 }
1194 } 2712 }
1195#endif 2713#endif
1196} 2714}
1197 2715
1198/*****************************************************************************/ 2716/*****************************************************************************/
1199 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
1200static void 2734static void
1201ev_sighandler (int signum) 2735ev_sighandler (int signum)
1202{ 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
1203#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2756 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2758
1207#if _WIN32 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2760 return;
2761#endif
1228 2762
1229 signals [signum].gotsig = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1230 2765
1231 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2768}
1234 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
1235/*****************************************************************************/ 2792/*****************************************************************************/
1236 2793
2794#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2795static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2796
1241static ev_signal childev; 2797static ev_signal childev;
1242 2798
1243#ifndef WIFCONTINUED 2799#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2800# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2805child_reap (EV_P_ int chain, int pid, int status)
1250{ 2806{
1251 ev_child *w; 2807 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2808 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2809
1254 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)
1255 { 2811 {
1256 if ((w->pid == pid || !w->pid) 2812 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2813 && (!traced || (w->flags & 1)))
1258 { 2814 {
1259 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 */
… …
1284 /* 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 */
1285 /* 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 */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2842 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2843
1288 child_reap (EV_A_ pid, pid, status); 2844 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2845 if ((EV_PID_HASHSIZE) > 1)
1290 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 */
1291} 2847}
1292 2848
1293#endif 2849#endif
1294 2850
1295/*****************************************************************************/ 2851/*****************************************************************************/
1296 2852
2853#if EV_USE_IOCP
2854# include "ev_iocp.c"
2855#endif
1297#if EV_USE_PORT 2856#if EV_USE_PORT
1298# include "ev_port.c" 2857# include "ev_port.c"
1299#endif 2858#endif
1300#if EV_USE_KQUEUE 2859#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1302#endif 2861#endif
1303#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1304# include "ev_epoll.c" 2863# include "ev_epoll.c"
1305#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
1306#if EV_USE_POLL 2871#if EV_USE_POLL
1307# include "ev_poll.c" 2872# include "ev_poll.c"
1308#endif 2873#endif
1309#if EV_USE_SELECT 2874#if EV_USE_SELECT
1310# include "ev_select.c" 2875# include "ev_select.c"
1311#endif 2876#endif
1312 2877
1313int 2878ecb_cold int
1314ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1315{ 2880{
1316 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1317} 2882}
1318 2883
1319int 2884ecb_cold int
1320ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1321{ 2886{
1322 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
1323} 2888}
1324 2889
1325/* 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 */
1326int inline_size 2891inline_size ecb_cold int
1327enable_secure (void) 2892enable_secure (void)
1328{ 2893{
1329#ifdef _WIN32 2894#ifdef _WIN32
1330 return 0; 2895 return 0;
1331#else 2896#else
1332 return getuid () != geteuid () 2897 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2898 || getgid () != getegid ();
1334#endif 2899#endif
1335} 2900}
1336 2901
2902ecb_cold
1337unsigned int 2903unsigned int
1338ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
1339{ 2905{
1340 unsigned int flags = 0; 2906 unsigned int flags = 0;
1341 2907
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1344 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;
1345 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1347 2915
1348 return flags; 2916 return flags;
1349} 2917}
1350 2918
2919ecb_cold
1351unsigned int 2920unsigned int
1352ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
1353{ 2922{
1354 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
1355 2924
1356#ifndef __NetBSD__ 2925#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2930#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2931 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2932 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 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 */
1365#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
1366 2947
1367 return flags; 2948 return flags;
1368} 2949}
1369 2950
2951ecb_cold
1370unsigned int 2952unsigned int
1371ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
1372{ 2954{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2956
1375 /* 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 */
1376 /* please fix it and tell me how to detect the fix */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 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 */
1378 2967
1379 return flags; 2968 return flags;
1380} 2969}
1381 2970
1382unsigned int 2971unsigned int
1383ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
1384{ 2973{
1385 return backend; 2974 return backend;
1386} 2975}
1387 2976
1388#if EV_MINIMAL < 2 2977#if EV_FEATURE_API
1389unsigned int 2978unsigned int
1390ev_loop_count (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
1391{ 2980{
1392 return loop_count; 2981 return loop_count;
1393} 2982}
1394 2983
1395unsigned int 2984unsigned int
1396ev_loop_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
1397{ 2986{
1398 return loop_depth; 2987 return loop_depth;
1399} 2988}
1400 2989
1401void 2990void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1403{ 2992{
1404 io_blocktime = interval; 2993 io_blocktime = interval;
1405} 2994}
1406 2995
1407void 2996void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1409{ 2998{
1410 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
1411} 3000}
1412 3001
1413void 3002void
1414ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1415{ 3004{
1416 userdata = data; 3005 userdata = data;
1417} 3006}
1418 3007
1419void * 3008void *
1420ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
1421{ 3010{
1422 return userdata; 3011 return userdata;
1423} 3012}
1424 3013
3014void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3015ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1426{ 3016{
1427 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
1428} 3018}
1429 3019
3020void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3021ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1431{ 3022{
1432 release_cb = release; 3023 release_cb = release;
1433 acquire_cb = acquire; 3024 acquire_cb = acquire;
1434} 3025}
1435#endif 3026#endif
1436 3027
1437/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
1438static void noinline 3029ecb_noinline ecb_cold
3030static void
1439loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1440{ 3032{
1441 if (!backend) 3033 if (!backend)
1442 { 3034 {
3035 origflags = flags;
3036
1443#if EV_USE_REALTIME 3037#if EV_USE_REALTIME
1444 if (!have_realtime) 3038 if (!have_realtime)
1445 { 3039 {
1446 struct timespec ts; 3040 struct timespec ts;
1447 3041
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3052 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 3053 have_monotonic = 1;
1460 } 3054 }
1461#endif 3055#endif
1462 3056
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 3057 /* pid check not overridable via env */
1481#ifndef _WIN32 3058#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 3059 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 3060 curpid = getpid ();
1484#endif 3061#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 3063 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 3064 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 3065 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 3066 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 3067
1491 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))
1492 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
1493 3097
3098#if EV_USE_IOCP
3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3100#endif
1494#if EV_USE_PORT 3101#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 3103#endif
1497#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
1498 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);
1499#endif 3112#endif
1500#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
1501 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1502#endif 3115#endif
1503#if EV_USE_POLL 3116#if EV_USE_POLL
1504 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1505#endif 3118#endif
1506#if EV_USE_SELECT 3119#if EV_USE_SELECT
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1508#endif 3121#endif
1509 3122
1510 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
1511 3124
3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 3126 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 3127 ev_set_priority (&pipe_w, EV_MAXPRI);
3128#endif
1514 } 3129 }
1515} 3130}
1516 3131
1517/* free up a loop structure */ 3132/* free up a loop structure */
1518static void noinline 3133ecb_cold
3134void
1519loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
1520{ 3136{
1521 int i; 3137 int i;
1522 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
1523 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
1524 { 3163 {
1525 ev_ref (EV_A); /* signal watcher */ 3164 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 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
1528#if EV_USE_EVENTFD 3171#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 3172 if (ev_is_active (&sigfd_w))
1530 close (evfd); 3173 close (sigfd);
1531#endif 3174#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 3175
1540#if EV_USE_INOTIFY 3176#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 3177 if (fs_fd >= 0)
1542 close (fs_fd); 3178 close (fs_fd);
1543#endif 3179#endif
1544 3180
1545 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
1546 close (backend_fd); 3182 close (backend_fd);
1547 3183
3184#if EV_USE_IOCP
3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3186#endif
1548#if EV_USE_PORT 3187#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 3189#endif
1551#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
1552 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);
1553#endif 3198#endif
1554#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
1555 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1556#endif 3201#endif
1557#if EV_USE_POLL 3202#if EV_USE_POLL
1558 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1559#endif 3204#endif
1560#if EV_USE_SELECT 3205#if EV_USE_SELECT
1561 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1562#endif 3207#endif
1563 3208
1564 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
1565 { 3210 {
1566 array_free (pending, [i]); 3211 array_free (pending, [i]);
1567#if EV_IDLE_ENABLE 3212#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 3213 array_free (idle, [i]);
1569#endif 3214#endif
1570 } 3215 }
1571 3216
1572 ev_free (anfds); anfdmax = 0; 3217 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 3218
1574 /* have to use the microsoft-never-gets-it-right macro */ 3219 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 3220 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 3221 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 3222 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 3224 array_free (periodic, EMPTY);
1580#endif 3225#endif
1581#if EV_FORK_ENABLE 3226#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 3227 array_free (fork, EMPTY);
1583#endif 3228#endif
3229#if EV_CLEANUP_ENABLE
3230 array_free (cleanup, EMPTY);
3231#endif
1584 array_free (prepare, EMPTY); 3232 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 3233 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 3234#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 3235 array_free (async, EMPTY);
1588#endif 3236#endif
1589 3237
1590 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
1591} 3248}
1592 3249
1593#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 3251inline_size void infy_fork (EV_P);
1595#endif 3252#endif
1596 3253
1597inline_size void 3254inline_size void
1598loop_fork (EV_P) 3255loop_fork (EV_P)
1599{ 3256{
1600#if EV_USE_PORT 3257#if EV_USE_PORT
1601 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1602#endif 3259#endif
1603#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
1604 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);
1605#endif 3268#endif
1606#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
1607 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1608#endif 3271#endif
1609#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 3273 infy_fork (EV_A);
1611#endif 3274#endif
1612 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
1614 { 3278 {
1615 /* this "locks" the handlers against writing to the pipe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 3280
1622 ev_ref (EV_A); 3281 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
1624 3283
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
1631 { 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 3286
1636 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 3290 }
3291#endif
1640 3292
1641 postfork = 0; 3293 postfork = 0;
1642} 3294}
1643 3295
1644#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
1645 3297
3298ecb_cold
1646struct ev_loop * 3299struct ev_loop *
1647ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
1648{ 3301{
1649 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));
1650 3303
1651 memset (loop, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
1654 3306
1655 if (ev_backend (EV_A)) 3307 if (ev_backend (EV_A))
1656 return loop; 3308 return EV_A;
1657 3309
3310 ev_free (EV_A);
1658 return 0; 3311 return 0;
1659} 3312}
1660 3313
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 3314#endif /* multiplicity */
1674 3315
1675#if EV_VERIFY 3316#if EV_VERIFY
1676static void noinline 3317ecb_noinline ecb_cold
3318static void
1677verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
1678{ 3320{
1679 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));
1680 3322
1681 if (w->pending) 3323 if (w->pending)
1682 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));
1683} 3325}
1684 3326
1685static void noinline 3327ecb_noinline ecb_cold
3328static void
1686verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
1687{ 3330{
1688 int i; 3331 int i;
1689 3332
1690 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 3338
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 3340 }
1698} 3341}
1699 3342
1700static void noinline 3343ecb_noinline ecb_cold
3344static void
1701array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
1702{ 3346{
1703 while (cnt--) 3347 while (cnt--)
1704 { 3348 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 3350 verify_watcher (EV_A_ ws [cnt]);
1707 } 3351 }
1708} 3352}
1709#endif 3353#endif
1710 3354
1711#if EV_MINIMAL < 2 3355#if EV_FEATURE_API
1712void 3356void ecb_cold
1713ev_loop_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
1714{ 3358{
1715#if EV_VERIFY 3359#if EV_VERIFY
1716 int i; 3360 int i;
1717 WL w; 3361 WL w, w2;
1718 3362
1719 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
1720 3364
1721 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 3368
1725 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
1727 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 3375 {
1729 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
1730 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));
1731 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));
1732 } 3386 }
3387 }
1733 3388
1734 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
1736 3391
1737#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 3407#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 3408 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 3409 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 3410#endif
1756 3411
3412#if EV_CLEANUP_ENABLE
3413 assert (cleanupmax >= cleanupcnt);
3414 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3415#endif
3416
1757#if EV_ASYNC_ENABLE 3417#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 3418 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 3419 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 3420#endif
1761 3421
3422#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 3423 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 3424 array_verify (EV_A_ (W *)prepares, preparecnt);
3425#endif
1764 3426
3427#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 3428 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 3429 array_verify (EV_A_ (W *)checks, checkcnt);
3430#endif
1767 3431
1768# if 0 3432# if 0
3433#if EV_CHILD_ENABLE
1769 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)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3435 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3436#endif
1771# endif 3437# endif
1772#endif 3438#endif
1773} 3439}
1774#endif 3440#endif
1775 3441
1776#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
1777struct ev_loop * 3444struct ev_loop *
1778ev_default_loop_init (unsigned int flags)
1779#else 3445#else
1780int 3446int
3447#endif
1781ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
1782#endif
1783{ 3449{
1784 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
1785 { 3451 {
1786#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 3454#else
1789 ev_default_loop_ptr = 1; 3455 ev_default_loop_ptr = 1;
1790#endif 3456#endif
1791 3457
1792 loop_init (EV_A_ flags); 3458 loop_init (EV_A_ flags);
1793 3459
1794 if (ev_backend (EV_A)) 3460 if (ev_backend (EV_A))
1795 { 3461 {
1796#ifndef _WIN32 3462#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 3463 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 3464 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 3465 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3466 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 3467#endif
… …
1806 3472
1807 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
1808} 3474}
1809 3475
1810void 3476void
1811ev_default_destroy (void) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
1812{ 3478{
1813#if EV_MULTIPLICITY 3479 postfork = 1;
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */
1835} 3480}
1836 3481
1837/*****************************************************************************/ 3482/*****************************************************************************/
1838 3483
1839void 3484void
… …
1841{ 3486{
1842 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
1843} 3488}
1844 3489
1845unsigned int 3490unsigned int
1846ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
1847{ 3492{
1848 int pri; 3493 int pri;
1849 unsigned int count = 0; 3494 unsigned int count = 0;
1850 3495
1851 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
1852 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
1853 3498
1854 return count; 3499 return count;
1855} 3500}
1856 3501
1857void noinline 3502ecb_noinline
3503void
1858ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
1859{ 3505{
1860 int pri; 3506 pendingpri = NUMPRI;
1861 3507
1862 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
1863 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
1864 { 3514 {
1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1866 3516
1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1869
1870 p->w->pending = 0; 3517 p->w->pending = 0;
1871 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
1872 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
1873 } 3520 }
3521 }
3522 while (pendingpri);
1874} 3523}
1875 3524
1876#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
1877/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
1878/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
1879inline_size void 3528inline_size void
1880idle_reify (EV_P) 3529idle_reify (EV_P)
1881{ 3530{
1882 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
1883 { 3532 {
1884 int pri; 3533 int pri;
1885 3534
1886 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
1887 { 3536 {
… …
1917 { 3566 {
1918 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
1919 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
1920 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
1921 3570
1922 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.)));
1923 3572
1924 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
1925 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
1926 } 3575 }
1927 else 3576 else
… …
1930 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w); 3580 feed_reverse (EV_A_ (W)w);
1932 } 3581 }
1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3582 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1934 3583
1935 feed_reverse_done (EV_A_ EV_TIMEOUT); 3584 feed_reverse_done (EV_A_ EV_TIMER);
1936 } 3585 }
1937} 3586}
1938 3587
1939#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
1940/* make periodics pending */ 3615/* make periodics pending */
1941inline_size void 3616inline_size void
1942periodics_reify (EV_P) 3617periodics_reify (EV_P)
1943{ 3618{
1944 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
1945 3620
1946 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1947 { 3622 {
1948 int feed_count = 0;
1949
1950 do 3623 do
1951 { 3624 {
1952 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1953 3626
1954 /*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)));*/
… …
1963 ANHE_at_cache (periodics [HEAP0]); 3636 ANHE_at_cache (periodics [HEAP0]);
1964 downheap (periodics, periodiccnt, HEAP0); 3637 downheap (periodics, periodiccnt, HEAP0);
1965 } 3638 }
1966 else if (w->interval) 3639 else if (w->interval)
1967 { 3640 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3641 periodic_recalc (EV_A_ w);
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]); 3642 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0); 3643 downheap (periodics, periodiccnt, HEAP0);
1984 } 3644 }
1985 else 3645 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3646 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1993 feed_reverse_done (EV_A_ EV_PERIODIC); 3653 feed_reverse_done (EV_A_ EV_PERIODIC);
1994 } 3654 }
1995} 3655}
1996 3656
1997/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
1998/* 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? */
1999static void noinline 3659ecb_noinline ecb_cold
3660static void
2000periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2001{ 3662{
2002 int i; 3663 int i;
2003 3664
2004 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2007 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3668 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2008 3669
2009 if (w->reschedule_cb) 3670 if (w->reschedule_cb)
2010 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3671 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2011 else if (w->interval) 3672 else if (w->interval)
2012 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3673 periodic_recalc (EV_A_ w);
2013 3674
2014 ANHE_at_cache (periodics [i]); 3675 ANHE_at_cache (periodics [i]);
2015 } 3676 }
2016 3677
2017 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2018} 3679}
2019#endif 3680#endif
2020 3681
2021/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2022static void noinline 3683ecb_noinline ecb_cold
3684static void
2023timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2024{ 3686{
2025 int i; 3687 int i;
2026 3688
2027 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2031 ANHE_at_cache (*he); 3693 ANHE_at_cache (*he);
2032 } 3694 }
2033} 3695}
2034 3696
2035/* fetch new monotonic and realtime times from the kernel */ 3697/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2037inline_speed void 3699inline_speed void
2038time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2039{ 3701{
2040#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2041 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2042 { 3704 {
2043 int i; 3705 int i;
2044 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2045 3707
2046 mn_now = get_clock (); 3708 mn_now = get_clock ();
2047 3709
2048 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2049 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2050 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)))
2051 { 3713 {
2052 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2053 return; 3715 return;
2054 } 3716 }
2055 3717
… …
2064 * 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
2065 * in the unlikely event of having been preempted here. 3727 * in the unlikely event of having been preempted here.
2066 */ 3728 */
2067 for (i = 4; --i; ) 3729 for (i = 4; --i; )
2068 { 3730 {
3731 ev_tstamp diff;
2069 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2070 3733
2071 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)))
2072 return; /* all is well */ 3737 return; /* all is well */
2073 3738
2074 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2075 mn_now = get_clock (); 3740 mn_now = get_clock ();
2076 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2085 else 3750 else
2086#endif 3751#endif
2087 { 3752 {
2088 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2089 3754
2090 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)))
2091 { 3756 {
2092 /* 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 */
2093 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2094#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2095 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2098 3763
2099 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2100 } 3765 }
2101} 3766}
2102 3767
2103void 3768int
2104ev_loop (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2105{ 3770{
2106#if EV_MINIMAL < 2 3771#if EV_FEATURE_API
2107 ++loop_depth; 3772 ++loop_depth;
2108#endif 3773#endif
2109 3774
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3775 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2111 3776
2112 loop_done = EVUNLOOP_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2113 3778
2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3779 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2115 3780
2116 do 3781 do
2117 { 3782 {
2118#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2119 ev_loop_verify (EV_A); 3784 ev_verify (EV_A);
2120#endif 3785#endif
2121 3786
2122#ifndef _WIN32 3787#ifndef _WIN32
2123 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2124 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2125 { 3790 {
2126 curpid = getpid (); 3791 curpid = getpid ();
2127 postfork = 1; 3792 postfork = 1;
2128 } 3793 }
2129#endif 3794#endif
2130 3795
2131#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2132 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2133 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2134 if (forkcnt) 3799 if (forkcnt)
2135 { 3800 {
2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2137 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2138 } 3803 }
2139#endif 3804#endif
2140 3805
3806#if EV_PREPARE_ENABLE
2141 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2142 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2143 { 3809 {
2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2145 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2146 } 3812 }
3813#endif
2147 3814
2148 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2149 break; 3816 break;
2150 3817
2151 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2152 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2153 loop_fork (EV_A); 3820 loop_fork (EV_A);
2154 3821
2155 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2156 fd_reify (EV_A); 3823 fd_reify (EV_A);
2157 3824
2158 /* calculate blocking time */ 3825 /* calculate blocking time */
2159 { 3826 {
2160 ev_tstamp waittime = 0.; 3827 ev_tstamp waittime = 0.;
2161 ev_tstamp sleeptime = 0.; 3828 ev_tstamp sleeptime = 0.;
2162 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
2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2164 { 3842 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
2168 /* update time to cancel out callback processing overhead */
2169 time_update (EV_A_ 1e100);
2170
2171 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2172 3844
2173 if (timercnt) 3845 if (timercnt)
2174 { 3846 {
2175 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2176 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
2177 } 3849 }
2178 3850
2179#if EV_PERIODIC_ENABLE 3851#if EV_PERIODIC_ENABLE
2180 if (periodiccnt) 3852 if (periodiccnt)
2181 { 3853 {
2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3854 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2183 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2184 } 3856 }
2185#endif 3857#endif
2186 3858
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2188 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2189 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2190 3862
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;
3872
2191 /* extra check because io_blocktime is commonly 0 */ 3873 /* extra check because io_blocktime is commonly 0 */
2192 if (expect_false (io_blocktime)) 3874 if (ecb_expect_false (io_blocktime))
2193 { 3875 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3876 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195 3877
2196 if (sleeptime > waittime - backend_fudge) 3878 if (sleeptime > waittime - backend_mintime)
2197 sleeptime = waittime - backend_fudge; 3879 sleeptime = waittime - backend_mintime;
2198 3880
2199 if (expect_true (sleeptime > 0.)) 3881 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2200 { 3882 {
2201 ev_sleep (sleeptime); 3883 ev_sleep (sleeptime);
2202 waittime -= sleeptime; 3884 waittime -= sleeptime;
2203 } 3885 }
2204 } 3886 }
2205 } 3887 }
2206 3888
2207#if EV_MINIMAL < 2 3889#if EV_FEATURE_API
2208 ++loop_count; 3890 ++loop_count;
2209#endif 3891#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3892 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2211 backend_poll (EV_A_ waittime); 3893 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 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 }
2213 3904
2214 /* update ev_rt_now, do magic */ 3905 /* update ev_rt_now, do magic */
2215 time_update (EV_A_ waittime + sleeptime); 3906 time_update (EV_A_ waittime + sleeptime);
2216 } 3907 }
2217 3908
… …
2224#if EV_IDLE_ENABLE 3915#if EV_IDLE_ENABLE
2225 /* queue idle watchers unless other events are pending */ 3916 /* queue idle watchers unless other events are pending */
2226 idle_reify (EV_A); 3917 idle_reify (EV_A);
2227#endif 3918#endif
2228 3919
3920#if EV_CHECK_ENABLE
2229 /* queue check watchers, to be executed first */ 3921 /* queue check watchers, to be executed first */
2230 if (expect_false (checkcnt)) 3922 if (ecb_expect_false (checkcnt))
2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3923 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3924#endif
2232 3925
2233 EV_INVOKE_PENDING; 3926 EV_INVOKE_PENDING;
2234 } 3927 }
2235 while (expect_true ( 3928 while (ecb_expect_true (
2236 activecnt 3929 activecnt
2237 && !loop_done 3930 && !loop_done
2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3931 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2239 )); 3932 ));
2240 3933
2241 if (loop_done == EVUNLOOP_ONE) 3934 if (loop_done == EVBREAK_ONE)
2242 loop_done = EVUNLOOP_CANCEL; 3935 loop_done = EVBREAK_CANCEL;
2243 3936
2244#if EV_MINIMAL < 2 3937#if EV_FEATURE_API
2245 --loop_depth; 3938 --loop_depth;
2246#endif 3939#endif
2247}
2248 3940
3941 return activecnt;
3942}
3943
2249void 3944void
2250ev_unloop (EV_P_ int how) 3945ev_break (EV_P_ int how) EV_NOEXCEPT
2251{ 3946{
2252 loop_done = how; 3947 loop_done = how;
2253} 3948}
2254 3949
2255void 3950void
2256ev_ref (EV_P) 3951ev_ref (EV_P) EV_NOEXCEPT
2257{ 3952{
2258 ++activecnt; 3953 ++activecnt;
2259} 3954}
2260 3955
2261void 3956void
2262ev_unref (EV_P) 3957ev_unref (EV_P) EV_NOEXCEPT
2263{ 3958{
2264 --activecnt; 3959 --activecnt;
2265} 3960}
2266 3961
2267void 3962void
2268ev_now_update (EV_P) 3963ev_now_update (EV_P) EV_NOEXCEPT
2269{ 3964{
2270 time_update (EV_A_ 1e100); 3965 time_update (EV_A_ EV_TSTAMP_HUGE);
2271} 3966}
2272 3967
2273void 3968void
2274ev_suspend (EV_P) 3969ev_suspend (EV_P) EV_NOEXCEPT
2275{ 3970{
2276 ev_now_update (EV_A); 3971 ev_now_update (EV_A);
2277} 3972}
2278 3973
2279void 3974void
2280ev_resume (EV_P) 3975ev_resume (EV_P) EV_NOEXCEPT
2281{ 3976{
2282 ev_tstamp mn_prev = mn_now; 3977 ev_tstamp mn_prev = mn_now;
2283 3978
2284 ev_now_update (EV_A); 3979 ev_now_update (EV_A);
2285 timers_reschedule (EV_A_ mn_now - mn_prev); 3980 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2302inline_size void 3997inline_size void
2303wlist_del (WL *head, WL elem) 3998wlist_del (WL *head, WL elem)
2304{ 3999{
2305 while (*head) 4000 while (*head)
2306 { 4001 {
2307 if (*head == elem) 4002 if (ecb_expect_true (*head == elem))
2308 { 4003 {
2309 *head = elem->next; 4004 *head = elem->next;
2310 return; 4005 break;
2311 } 4006 }
2312 4007
2313 head = &(*head)->next; 4008 head = &(*head)->next;
2314 } 4009 }
2315} 4010}
… …
2324 w->pending = 0; 4019 w->pending = 0;
2325 } 4020 }
2326} 4021}
2327 4022
2328int 4023int
2329ev_clear_pending (EV_P_ void *w) 4024ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2330{ 4025{
2331 W w_ = (W)w; 4026 W w_ = (W)w;
2332 int pending = w_->pending; 4027 int pending = w_->pending;
2333 4028
2334 if (expect_true (pending)) 4029 if (ecb_expect_true (pending))
2335 { 4030 {
2336 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4031 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2337 p->w = (W)&pending_w; 4032 p->w = (W)&pending_w;
2338 w_->pending = 0; 4033 w_->pending = 0;
2339 return p->events; 4034 return p->events;
… …
2366 w->active = 0; 4061 w->active = 0;
2367} 4062}
2368 4063
2369/*****************************************************************************/ 4064/*****************************************************************************/
2370 4065
2371void noinline 4066ecb_noinline
4067void
2372ev_io_start (EV_P_ ev_io *w) 4068ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2373{ 4069{
2374 int fd = w->fd; 4070 int fd = w->fd;
2375 4071
2376 if (expect_false (ev_is_active (w))) 4072 if (ecb_expect_false (ev_is_active (w)))
2377 return; 4073 return;
2378 4074
2379 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4075 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 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))));
2381 4077
4078#if EV_VERIFY >= 2
4079 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4080#endif
2382 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2383 4082
2384 ev_start (EV_A_ (W)w, 1); 4083 ev_start (EV_A_ (W)w, 1);
2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4084 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2386 wlist_add (&anfds[fd].head, (WL)w); 4085 wlist_add (&anfds[fd].head, (WL)w);
4086
4087 /* common bug, apparently */
4088 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2387 4089
2388 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4090 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2389 w->events &= ~EV__IOFDSET; 4091 w->events &= ~EV__IOFDSET;
2390 4092
2391 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
2392} 4094}
2393 4095
2394void noinline 4096ecb_noinline
4097void
2395ev_io_stop (EV_P_ ev_io *w) 4098ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2396{ 4099{
2397 clear_pending (EV_A_ (W)w); 4100 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w))) 4101 if (ecb_expect_false (!ev_is_active (w)))
2399 return; 4102 return;
2400 4103
2401 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));
2402 4105
4106#if EV_VERIFY >= 2
4107 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4108#endif
2403 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
2404 4110
2405 wlist_del (&anfds[w->fd].head, (WL)w); 4111 wlist_del (&anfds[w->fd].head, (WL)w);
2406 ev_stop (EV_A_ (W)w); 4112 ev_stop (EV_A_ (W)w);
2407 4113
2408 fd_change (EV_A_ w->fd, 1); 4114 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2409 4115
2410 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
2411} 4117}
2412 4118
2413void noinline 4119ecb_noinline
4120void
2414ev_timer_start (EV_P_ ev_timer *w) 4121ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2415{ 4122{
2416 if (expect_false (ev_is_active (w))) 4123 if (ecb_expect_false (ev_is_active (w)))
2417 return; 4124 return;
2418 4125
2419 ev_at (w) += mn_now; 4126 ev_at (w) += mn_now;
2420 4127
2421 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.));
2422 4129
2423 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2424 4131
2425 ++timercnt; 4132 ++timercnt;
2426 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4133 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2427 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4134 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2428 ANHE_w (timers [ev_active (w)]) = (WT)w; 4135 ANHE_w (timers [ev_active (w)]) = (WT)w;
2429 ANHE_at_cache (timers [ev_active (w)]); 4136 ANHE_at_cache (timers [ev_active (w)]);
2430 upheap (timers, ev_active (w)); 4137 upheap (timers, ev_active (w));
2431 4138
2432 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2433 4140
2434 /*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));*/
2435} 4142}
2436 4143
2437void noinline 4144ecb_noinline
4145void
2438ev_timer_stop (EV_P_ ev_timer *w) 4146ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2439{ 4147{
2440 clear_pending (EV_A_ (W)w); 4148 clear_pending (EV_A_ (W)w);
2441 if (expect_false (!ev_is_active (w))) 4149 if (ecb_expect_false (!ev_is_active (w)))
2442 return; 4150 return;
2443 4151
2444 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
2445 4153
2446 { 4154 {
… …
2448 4156
2449 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));
2450 4158
2451 --timercnt; 4159 --timercnt;
2452 4160
2453 if (expect_true (active < timercnt + HEAP0)) 4161 if (ecb_expect_true (active < timercnt + HEAP0))
2454 { 4162 {
2455 timers [active] = timers [timercnt + HEAP0]; 4163 timers [active] = timers [timercnt + HEAP0];
2456 adjustheap (timers, timercnt, active); 4164 adjustheap (timers, timercnt, active);
2457 } 4165 }
2458 } 4166 }
2459 4167
2460 EV_FREQUENT_CHECK;
2461
2462 ev_at (w) -= mn_now; 4168 ev_at (w) -= mn_now;
2463 4169
2464 ev_stop (EV_A_ (W)w); 4170 ev_stop (EV_A_ (W)w);
2465}
2466 4171
2467void noinline 4172 EV_FREQUENT_CHECK;
4173}
4174
4175ecb_noinline
4176void
2468ev_timer_again (EV_P_ ev_timer *w) 4177ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2469{ 4178{
2470 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
4180
4181 clear_pending (EV_A_ (W)w);
2471 4182
2472 if (ev_is_active (w)) 4183 if (ev_is_active (w))
2473 { 4184 {
2474 if (w->repeat) 4185 if (w->repeat)
2475 { 4186 {
… …
2488 4199
2489 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2490} 4201}
2491 4202
2492ev_tstamp 4203ev_tstamp
2493ev_timer_remaining (EV_P_ ev_timer *w) 4204ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2494{ 4205{
2495 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4206 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2496} 4207}
2497 4208
2498#if EV_PERIODIC_ENABLE 4209#if EV_PERIODIC_ENABLE
2499void noinline 4210ecb_noinline
4211void
2500ev_periodic_start (EV_P_ ev_periodic *w) 4212ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2501{ 4213{
2502 if (expect_false (ev_is_active (w))) 4214 if (ecb_expect_false (ev_is_active (w)))
2503 return; 4215 return;
2504 4216
2505 if (w->reschedule_cb) 4217 if (w->reschedule_cb)
2506 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4218 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2507 else if (w->interval) 4219 else if (w->interval)
2508 { 4220 {
2509 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.));
2510 /* this formula differs from the one in periodic_reify because we do not always round up */ 4222 periodic_recalc (EV_A_ w);
2511 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2512 } 4223 }
2513 else 4224 else
2514 ev_at (w) = w->offset; 4225 ev_at (w) = w->offset;
2515 4226
2516 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2517 4228
2518 ++periodiccnt; 4229 ++periodiccnt;
2519 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4230 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2520 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4231 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2521 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4232 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2522 ANHE_at_cache (periodics [ev_active (w)]); 4233 ANHE_at_cache (periodics [ev_active (w)]);
2523 upheap (periodics, ev_active (w)); 4234 upheap (periodics, ev_active (w));
2524 4235
2525 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
2526 4237
2527 /*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));*/
2528} 4239}
2529 4240
2530void noinline 4241ecb_noinline
4242void
2531ev_periodic_stop (EV_P_ ev_periodic *w) 4243ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2532{ 4244{
2533 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
2534 if (expect_false (!ev_is_active (w))) 4246 if (ecb_expect_false (!ev_is_active (w)))
2535 return; 4247 return;
2536 4248
2537 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2538 4250
2539 { 4251 {
… …
2541 4253
2542 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));
2543 4255
2544 --periodiccnt; 4256 --periodiccnt;
2545 4257
2546 if (expect_true (active < periodiccnt + HEAP0)) 4258 if (ecb_expect_true (active < periodiccnt + HEAP0))
2547 { 4259 {
2548 periodics [active] = periodics [periodiccnt + HEAP0]; 4260 periodics [active] = periodics [periodiccnt + HEAP0];
2549 adjustheap (periodics, periodiccnt, active); 4261 adjustheap (periodics, periodiccnt, active);
2550 } 4262 }
2551 } 4263 }
2552 4264
2553 EV_FREQUENT_CHECK;
2554
2555 ev_stop (EV_A_ (W)w); 4265 ev_stop (EV_A_ (W)w);
2556}
2557 4266
2558void noinline 4267 EV_FREQUENT_CHECK;
4268}
4269
4270ecb_noinline
4271void
2559ev_periodic_again (EV_P_ ev_periodic *w) 4272ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2560{ 4273{
2561 /* TODO: use adjustheap and recalculation */ 4274 /* TODO: use adjustheap and recalculation */
2562 ev_periodic_stop (EV_A_ w); 4275 ev_periodic_stop (EV_A_ w);
2563 ev_periodic_start (EV_A_ w); 4276 ev_periodic_start (EV_A_ w);
2564} 4277}
… …
2566 4279
2567#ifndef SA_RESTART 4280#ifndef SA_RESTART
2568# define SA_RESTART 0 4281# define SA_RESTART 0
2569#endif 4282#endif
2570 4283
2571void noinline 4284#if EV_SIGNAL_ENABLE
4285
4286ecb_noinline
4287void
2572ev_signal_start (EV_P_ ev_signal *w) 4288ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2573{ 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
2574#if EV_MULTIPLICITY 4295#if EV_MULTIPLICITY
2575 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",
2576#endif 4297 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2577 if (expect_false (ev_is_active (w)))
2578 return;
2579 4298
2580 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
2581 4302
2582 evpipe_init (EV_A);
2583
2584 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
2585 4304
4305#if EV_USE_SIGNALFD
4306 if (sigfd == -2)
2586 { 4307 {
2587#ifndef _WIN32 4308 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2588 sigset_t full, prev; 4309 if (sigfd < 0 && errno == EINVAL)
2589 sigfillset (&full); 4310 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2590 sigprocmask (SIG_SETMASK, &full, &prev);
2591#endif
2592 4311
2593 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 */
2594 4315
2595#ifndef _WIN32 4316 sigemptyset (&sigfd_set);
2596 sigprocmask (SIG_SETMASK, &prev, 0); 4317
2597#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 }
2598 } 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
2599 4334
2600 ev_start (EV_A_ (W)w, 1); 4335 ev_start (EV_A_ (W)w, 1);
2601 wlist_add (&signals [w->signum - 1].head, (WL)w); 4336 wlist_add (&signals [w->signum - 1].head, (WL)w);
2602 4337
2603 if (!((WL)w)->next) 4338 if (!((WL)w)->next)
4339# if EV_USE_SIGNALFD
4340 if (sigfd < 0) /*TODO*/
4341# endif
2604 { 4342 {
2605#if _WIN32 4343# ifdef _WIN32
4344 evpipe_init (EV_A);
4345
2606 signal (w->signum, ev_sighandler); 4346 signal (w->signum, ev_sighandler);
2607#else 4347# else
2608 struct sigaction sa = { }; 4348 struct sigaction sa;
4349
4350 evpipe_init (EV_A);
4351
2609 sa.sa_handler = ev_sighandler; 4352 sa.sa_handler = ev_sighandler;
2610 sigfillset (&sa.sa_mask); 4353 sigfillset (&sa.sa_mask);
2611 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 */
2612 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 }
2613#endif 4363#endif
2614 } 4364 }
2615 4365
2616 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
2617} 4367}
2618 4368
2619void noinline 4369ecb_noinline
4370void
2620ev_signal_stop (EV_P_ ev_signal *w) 4371ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2621{ 4372{
2622 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
2624 return; 4375 return;
2625 4376
2626 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2627 4378
2628 wlist_del (&signals [w->signum - 1].head, (WL)w); 4379 wlist_del (&signals [w->signum - 1].head, (WL)w);
2629 ev_stop (EV_A_ (W)w); 4380 ev_stop (EV_A_ (W)w);
2630 4381
2631 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
2632 signal (w->signum, SIG_DFL); 4401 signal (w->signum, SIG_DFL);
4402 }
2633 4403
2634 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
2635} 4405}
2636 4406
4407#endif
4408
4409#if EV_CHILD_ENABLE
4410
2637void 4411void
2638ev_child_start (EV_P_ ev_child *w) 4412ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2639{ 4413{
2640#if EV_MULTIPLICITY 4414#if EV_MULTIPLICITY
2641 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));
2642#endif 4416#endif
2643 if (expect_false (ev_is_active (w))) 4417 if (ecb_expect_false (ev_is_active (w)))
2644 return; 4418 return;
2645 4419
2646 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2647 4421
2648 ev_start (EV_A_ (W)w, 1); 4422 ev_start (EV_A_ (W)w, 1);
2649 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4423 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2650 4424
2651 EV_FREQUENT_CHECK; 4425 EV_FREQUENT_CHECK;
2652} 4426}
2653 4427
2654void 4428void
2655ev_child_stop (EV_P_ ev_child *w) 4429ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2656{ 4430{
2657 clear_pending (EV_A_ (W)w); 4431 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 4432 if (ecb_expect_false (!ev_is_active (w)))
2659 return; 4433 return;
2660 4434
2661 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
2662 4436
2663 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4437 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2664 ev_stop (EV_A_ (W)w); 4438 ev_stop (EV_A_ (W)w);
2665 4439
2666 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
2667} 4441}
4442
4443#endif
2668 4444
2669#if EV_STAT_ENABLE 4445#if EV_STAT_ENABLE
2670 4446
2671# ifdef _WIN32 4447# ifdef _WIN32
2672# undef lstat 4448# undef lstat
… …
2675 4451
2676#define DEF_STAT_INTERVAL 5.0074891 4452#define DEF_STAT_INTERVAL 5.0074891
2677#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4453#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2678#define MIN_STAT_INTERVAL 0.1074891 4454#define MIN_STAT_INTERVAL 0.1074891
2679 4455
2680static 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);
2681 4457
2682#if EV_USE_INOTIFY 4458#if EV_USE_INOTIFY
2683# define EV_INOTIFY_BUFSIZE 8192
2684 4459
2685static 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
2686infy_add (EV_P_ ev_stat *w) 4465infy_add (EV_P_ ev_stat *w)
2687{ 4466{
2688 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);
2689 4471
2690 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 */
2691 { 4498 }
4499 else
4500 {
4501 /* can't use inotify, continue to stat */
2692 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4502 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2693 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2694 4503
2695 /* monitor some parent directory for speedup hints */ 4504 /* if path is not there, monitor some parent directory for speedup hints */
2696 /* 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, */
2697 /* but an efficiency issue only */ 4506 /* but an efficiency issue only */
2698 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4507 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2699 { 4508 {
2700 char path [4096]; 4509 char path [4096];
… …
2710 if (!pend || pend == path) 4519 if (!pend || pend == path)
2711 break; 4520 break;
2712 4521
2713 *pend = 0; 4522 *pend = 0;
2714 w->wd = inotify_add_watch (fs_fd, path, mask); 4523 w->wd = inotify_add_watch (fs_fd, path, mask);
2715 } 4524 }
2716 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4525 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2717 } 4526 }
2718 } 4527 }
2719 4528
2720 if (w->wd >= 0) 4529 if (w->wd >= 0)
2721 {
2722 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);
2723 4531
2724 /* now local changes will be tracked by inotify, but remote changes won't */ 4532 /* now re-arm timer, if required */
2725 /* unless the filesystem it known to be local, we therefore still poll */ 4533 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2726 /* also do poll on <2.6.25, but with normal frequency */
2727 struct statfs sfs;
2728
2729 if (fs_2625 && !statfs (w->path, &sfs))
2730 if (sfs.f_type == 0x1373 /* devfs */
2731 || sfs.f_type == 0xEF53 /* ext2/3 */
2732 || sfs.f_type == 0x3153464a /* jfs */
2733 || sfs.f_type == 0x52654973 /* reiser3 */
2734 || sfs.f_type == 0x01021994 /* tempfs */
2735 || sfs.f_type == 0x58465342 /* xfs */)
2736 return;
2737
2738 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2739 ev_timer_again (EV_A_ &w->timer); 4534 ev_timer_again (EV_A_ &w->timer);
2740 } 4535 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2741} 4536}
2742 4537
2743static void noinline 4538ecb_noinline
4539static void
2744infy_del (EV_P_ ev_stat *w) 4540infy_del (EV_P_ ev_stat *w)
2745{ 4541{
2746 int slot; 4542 int slot;
2747 int wd = w->wd; 4543 int wd = w->wd;
2748 4544
2749 if (wd < 0) 4545 if (wd < 0)
2750 return; 4546 return;
2751 4547
2752 w->wd = -2; 4548 w->wd = -2;
2753 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4549 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2754 wlist_del (&fs_hash [slot].head, (WL)w); 4550 wlist_del (&fs_hash [slot].head, (WL)w);
2755 4551
2756 /* remove this watcher, if others are watching it, they will rearm */ 4552 /* remove this watcher, if others are watching it, they will rearm */
2757 inotify_rm_watch (fs_fd, wd); 4553 inotify_rm_watch (fs_fd, wd);
2758} 4554}
2759 4555
2760static void noinline 4556ecb_noinline
4557static void
2761infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4558infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2762{ 4559{
2763 if (slot < 0) 4560 if (slot < 0)
2764 /* overflow, need to check for all hash slots */ 4561 /* overflow, need to check for all hash slots */
2765 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4562 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2766 infy_wd (EV_A_ slot, wd, ev); 4563 infy_wd (EV_A_ slot, wd, ev);
2767 else 4564 else
2768 { 4565 {
2769 WL w_; 4566 WL w_;
2770 4567
2771 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4568 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2772 { 4569 {
2773 ev_stat *w = (ev_stat *)w_; 4570 ev_stat *w = (ev_stat *)w_;
2774 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 */
2775 4572
2776 if (w->wd == wd || wd == -1) 4573 if (w->wd == wd || wd == -1)
2777 { 4574 {
2778 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4575 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2779 { 4576 {
2780 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);
2781 w->wd = -1; 4578 w->wd = -1;
2782 infy_add (EV_A_ w); /* re-add, no matter what */ 4579 infy_add (EV_A_ w); /* re-add, no matter what */
2783 } 4580 }
2784 4581
2785 stat_timer_cb (EV_A_ &w->timer, 0); 4582 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2790 4587
2791static void 4588static void
2792infy_cb (EV_P_ ev_io *w, int revents) 4589infy_cb (EV_P_ ev_io *w, int revents)
2793{ 4590{
2794 char buf [EV_INOTIFY_BUFSIZE]; 4591 char buf [EV_INOTIFY_BUFSIZE];
2795 struct inotify_event *ev = (struct inotify_event *)buf;
2796 int ofs; 4592 int ofs;
2797 int len = read (fs_fd, buf, sizeof (buf)); 4593 int len = read (fs_fd, buf, sizeof (buf));
2798 4594
2799 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);
2800 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 }
2801} 4601}
2802 4602
2803inline_size void 4603inline_size ecb_cold
4604void
2804check_2625 (EV_P) 4605ev_check_2625 (EV_P)
2805{ 4606{
2806 /* kernels < 2.6.25 are borked 4607 /* kernels < 2.6.25 are borked
2807 * 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
2808 */ 4609 */
2809 struct utsname buf; 4610 if (ev_linux_version () < 0x020619)
2810 int major, minor, micro;
2811
2812 if (uname (&buf))
2813 return; 4611 return;
2814 4612
2815 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2816 return;
2817
2818 if (major < 2
2819 || (major == 2 && minor < 6)
2820 || (major == 2 && minor == 6 && micro < 25))
2821 return;
2822
2823 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 ();
2824} 4625}
2825 4626
2826inline_size void 4627inline_size void
2827infy_init (EV_P) 4628infy_init (EV_P)
2828{ 4629{
2829 if (fs_fd != -2) 4630 if (fs_fd != -2)
2830 return; 4631 return;
2831 4632
2832 fs_fd = -1; 4633 fs_fd = -1;
2833 4634
2834 check_2625 (EV_A); 4635 ev_check_2625 (EV_A);
2835 4636
2836 fs_fd = inotify_init (); 4637 fs_fd = infy_newfd ();
2837 4638
2838 if (fs_fd >= 0) 4639 if (fs_fd >= 0)
2839 { 4640 {
4641 fd_intern (fs_fd);
2840 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4642 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2841 ev_set_priority (&fs_w, EV_MAXPRI); 4643 ev_set_priority (&fs_w, EV_MAXPRI);
2842 ev_io_start (EV_A_ &fs_w); 4644 ev_io_start (EV_A_ &fs_w);
4645 ev_unref (EV_A);
2843 } 4646 }
2844} 4647}
2845 4648
2846inline_size void 4649inline_size void
2847infy_fork (EV_P) 4650infy_fork (EV_P)
… …
2849 int slot; 4652 int slot;
2850 4653
2851 if (fs_fd < 0) 4654 if (fs_fd < 0)
2852 return; 4655 return;
2853 4656
4657 ev_ref (EV_A);
4658 ev_io_stop (EV_A_ &fs_w);
2854 close (fs_fd); 4659 close (fs_fd);
2855 fs_fd = inotify_init (); 4660 fs_fd = infy_newfd ();
2856 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
2857 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4670 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2858 { 4671 {
2859 WL w_ = fs_hash [slot].head; 4672 WL w_ = fs_hash [slot].head;
2860 fs_hash [slot].head = 0; 4673 fs_hash [slot].head = 0;
2861 4674
2862 while (w_) 4675 while (w_)
… …
2867 w->wd = -1; 4680 w->wd = -1;
2868 4681
2869 if (fs_fd >= 0) 4682 if (fs_fd >= 0)
2870 infy_add (EV_A_ w); /* re-add, no matter what */ 4683 infy_add (EV_A_ w); /* re-add, no matter what */
2871 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);
2872 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 }
2873 } 4691 }
2874 } 4692 }
2875} 4693}
2876 4694
2877#endif 4695#endif
… …
2881#else 4699#else
2882# define EV_LSTAT(p,b) lstat (p, b) 4700# define EV_LSTAT(p,b) lstat (p, b)
2883#endif 4701#endif
2884 4702
2885void 4703void
2886ev_stat_stat (EV_P_ ev_stat *w) 4704ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2887{ 4705{
2888 if (lstat (w->path, &w->attr) < 0) 4706 if (lstat (w->path, &w->attr) < 0)
2889 w->attr.st_nlink = 0; 4707 w->attr.st_nlink = 0;
2890 else if (!w->attr.st_nlink) 4708 else if (!w->attr.st_nlink)
2891 w->attr.st_nlink = 1; 4709 w->attr.st_nlink = 1;
2892} 4710}
2893 4711
2894static void noinline 4712ecb_noinline
4713static void
2895stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4714stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2896{ 4715{
2897 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4716 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2898 4717
2899 /* we copy this here each the time so that */ 4718 ev_statdata prev = w->attr;
2900 /* prev has the old value when the callback gets invoked */
2901 w->prev = w->attr;
2902 ev_stat_stat (EV_A_ w); 4719 ev_stat_stat (EV_A_ w);
2903 4720
2904 /* 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 */
2905 if ( 4722 if (
2906 w->prev.st_dev != w->attr.st_dev 4723 prev.st_dev != w->attr.st_dev
2907 || w->prev.st_ino != w->attr.st_ino 4724 || prev.st_ino != w->attr.st_ino
2908 || w->prev.st_mode != w->attr.st_mode 4725 || prev.st_mode != w->attr.st_mode
2909 || w->prev.st_nlink != w->attr.st_nlink 4726 || prev.st_nlink != w->attr.st_nlink
2910 || w->prev.st_uid != w->attr.st_uid 4727 || prev.st_uid != w->attr.st_uid
2911 || w->prev.st_gid != w->attr.st_gid 4728 || prev.st_gid != w->attr.st_gid
2912 || w->prev.st_rdev != w->attr.st_rdev 4729 || prev.st_rdev != w->attr.st_rdev
2913 || w->prev.st_size != w->attr.st_size 4730 || prev.st_size != w->attr.st_size
2914 || w->prev.st_atime != w->attr.st_atime 4731 || prev.st_atime != w->attr.st_atime
2915 || w->prev.st_mtime != w->attr.st_mtime 4732 || prev.st_mtime != w->attr.st_mtime
2916 || w->prev.st_ctime != w->attr.st_ctime 4733 || prev.st_ctime != w->attr.st_ctime
2917 ) { 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
2918 #if EV_USE_INOTIFY 4740 #if EV_USE_INOTIFY
2919 if (fs_fd >= 0) 4741 if (fs_fd >= 0)
2920 { 4742 {
2921 infy_del (EV_A_ w); 4743 infy_del (EV_A_ w);
2922 infy_add (EV_A_ w); 4744 infy_add (EV_A_ w);
… …
2927 ev_feed_event (EV_A_ w, EV_STAT); 4749 ev_feed_event (EV_A_ w, EV_STAT);
2928 } 4750 }
2929} 4751}
2930 4752
2931void 4753void
2932ev_stat_start (EV_P_ ev_stat *w) 4754ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2933{ 4755{
2934 if (expect_false (ev_is_active (w))) 4756 if (ecb_expect_false (ev_is_active (w)))
2935 return; 4757 return;
2936 4758
2937 ev_stat_stat (EV_A_ w); 4759 ev_stat_stat (EV_A_ w);
2938 4760
2939 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4761 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2947 4769
2948 if (fs_fd >= 0) 4770 if (fs_fd >= 0)
2949 infy_add (EV_A_ w); 4771 infy_add (EV_A_ w);
2950 else 4772 else
2951#endif 4773#endif
4774 {
2952 ev_timer_again (EV_A_ &w->timer); 4775 ev_timer_again (EV_A_ &w->timer);
4776 ev_unref (EV_A);
4777 }
2953 4778
2954 ev_start (EV_A_ (W)w, 1); 4779 ev_start (EV_A_ (W)w, 1);
2955 4780
2956 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
2957} 4782}
2958 4783
2959void 4784void
2960ev_stat_stop (EV_P_ ev_stat *w) 4785ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2961{ 4786{
2962 clear_pending (EV_A_ (W)w); 4787 clear_pending (EV_A_ (W)w);
2963 if (expect_false (!ev_is_active (w))) 4788 if (ecb_expect_false (!ev_is_active (w)))
2964 return; 4789 return;
2965 4790
2966 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
2967 4792
2968#if EV_USE_INOTIFY 4793#if EV_USE_INOTIFY
2969 infy_del (EV_A_ w); 4794 infy_del (EV_A_ w);
2970#endif 4795#endif
4796
4797 if (ev_is_active (&w->timer))
4798 {
4799 ev_ref (EV_A);
2971 ev_timer_stop (EV_A_ &w->timer); 4800 ev_timer_stop (EV_A_ &w->timer);
4801 }
2972 4802
2973 ev_stop (EV_A_ (W)w); 4803 ev_stop (EV_A_ (W)w);
2974 4804
2975 EV_FREQUENT_CHECK; 4805 EV_FREQUENT_CHECK;
2976} 4806}
2977#endif 4807#endif
2978 4808
2979#if EV_IDLE_ENABLE 4809#if EV_IDLE_ENABLE
2980void 4810void
2981ev_idle_start (EV_P_ ev_idle *w) 4811ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2982{ 4812{
2983 if (expect_false (ev_is_active (w))) 4813 if (ecb_expect_false (ev_is_active (w)))
2984 return; 4814 return;
2985 4815
2986 pri_adjust (EV_A_ (W)w); 4816 pri_adjust (EV_A_ (W)w);
2987 4817
2988 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
… …
2991 int active = ++idlecnt [ABSPRI (w)]; 4821 int active = ++idlecnt [ABSPRI (w)];
2992 4822
2993 ++idleall; 4823 ++idleall;
2994 ev_start (EV_A_ (W)w, active); 4824 ev_start (EV_A_ (W)w, active);
2995 4825
2996 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);
2997 idles [ABSPRI (w)][active - 1] = w; 4827 idles [ABSPRI (w)][active - 1] = w;
2998 } 4828 }
2999 4829
3000 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
3001} 4831}
3002 4832
3003void 4833void
3004ev_idle_stop (EV_P_ ev_idle *w) 4834ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3005{ 4835{
3006 clear_pending (EV_A_ (W)w); 4836 clear_pending (EV_A_ (W)w);
3007 if (expect_false (!ev_is_active (w))) 4837 if (ecb_expect_false (!ev_is_active (w)))
3008 return; 4838 return;
3009 4839
3010 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3011 4841
3012 { 4842 {
… …
3021 4851
3022 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3023} 4853}
3024#endif 4854#endif
3025 4855
4856#if EV_PREPARE_ENABLE
3026void 4857void
3027ev_prepare_start (EV_P_ ev_prepare *w) 4858ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3028{ 4859{
3029 if (expect_false (ev_is_active (w))) 4860 if (ecb_expect_false (ev_is_active (w)))
3030 return; 4861 return;
3031 4862
3032 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3033 4864
3034 ev_start (EV_A_ (W)w, ++preparecnt); 4865 ev_start (EV_A_ (W)w, ++preparecnt);
3035 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4866 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3036 prepares [preparecnt - 1] = w; 4867 prepares [preparecnt - 1] = w;
3037 4868
3038 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
3039} 4870}
3040 4871
3041void 4872void
3042ev_prepare_stop (EV_P_ ev_prepare *w) 4873ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3043{ 4874{
3044 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
3045 if (expect_false (!ev_is_active (w))) 4876 if (ecb_expect_false (!ev_is_active (w)))
3046 return; 4877 return;
3047 4878
3048 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3049 4880
3050 { 4881 {
… …
3056 4887
3057 ev_stop (EV_A_ (W)w); 4888 ev_stop (EV_A_ (W)w);
3058 4889
3059 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3060} 4891}
4892#endif
3061 4893
4894#if EV_CHECK_ENABLE
3062void 4895void
3063ev_check_start (EV_P_ ev_check *w) 4896ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3064{ 4897{
3065 if (expect_false (ev_is_active (w))) 4898 if (ecb_expect_false (ev_is_active (w)))
3066 return; 4899 return;
3067 4900
3068 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3069 4902
3070 ev_start (EV_A_ (W)w, ++checkcnt); 4903 ev_start (EV_A_ (W)w, ++checkcnt);
3071 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4904 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3072 checks [checkcnt - 1] = w; 4905 checks [checkcnt - 1] = w;
3073 4906
3074 EV_FREQUENT_CHECK; 4907 EV_FREQUENT_CHECK;
3075} 4908}
3076 4909
3077void 4910void
3078ev_check_stop (EV_P_ ev_check *w) 4911ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3079{ 4912{
3080 clear_pending (EV_A_ (W)w); 4913 clear_pending (EV_A_ (W)w);
3081 if (expect_false (!ev_is_active (w))) 4914 if (ecb_expect_false (!ev_is_active (w)))
3082 return; 4915 return;
3083 4916
3084 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
3085 4918
3086 { 4919 {
… …
3092 4925
3093 ev_stop (EV_A_ (W)w); 4926 ev_stop (EV_A_ (W)w);
3094 4927
3095 EV_FREQUENT_CHECK; 4928 EV_FREQUENT_CHECK;
3096} 4929}
4930#endif
3097 4931
3098#if EV_EMBED_ENABLE 4932#if EV_EMBED_ENABLE
3099void noinline 4933ecb_noinline
4934void
3100ev_embed_sweep (EV_P_ ev_embed *w) 4935ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3101{ 4936{
3102 ev_loop (w->other, EVLOOP_NONBLOCK); 4937 ev_run (w->other, EVRUN_NOWAIT);
3103} 4938}
3104 4939
3105static void 4940static void
3106embed_io_cb (EV_P_ ev_io *io, int revents) 4941embed_io_cb (EV_P_ ev_io *io, int revents)
3107{ 4942{
3108 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4943 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3109 4944
3110 if (ev_cb (w)) 4945 if (ev_cb (w))
3111 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4946 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3112 else 4947 else
3113 ev_loop (w->other, EVLOOP_NONBLOCK); 4948 ev_run (w->other, EVRUN_NOWAIT);
3114} 4949}
3115 4950
3116static void 4951static void
3117embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4952embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3118{ 4953{
3119 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4954 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3120 4955
3121 { 4956 {
3122 struct ev_loop *loop = w->other; 4957 EV_P = w->other;
3123 4958
3124 while (fdchangecnt) 4959 while (fdchangecnt)
3125 { 4960 {
3126 fd_reify (EV_A); 4961 fd_reify (EV_A);
3127 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4962 ev_run (EV_A_ EVRUN_NOWAIT);
3128 } 4963 }
3129 } 4964 }
3130} 4965}
3131 4966
3132static void 4967static void
… …
3135 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));
3136 4971
3137 ev_embed_stop (EV_A_ w); 4972 ev_embed_stop (EV_A_ w);
3138 4973
3139 { 4974 {
3140 struct ev_loop *loop = w->other; 4975 EV_P = w->other;
3141 4976
3142 ev_loop_fork (EV_A); 4977 ev_loop_fork (EV_A);
3143 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4978 ev_run (EV_A_ EVRUN_NOWAIT);
3144 } 4979 }
3145 4980
3146 ev_embed_start (EV_A_ w); 4981 ev_embed_start (EV_A_ w);
3147} 4982}
3148 4983
… …
3153 ev_idle_stop (EV_A_ idle); 4988 ev_idle_stop (EV_A_ idle);
3154} 4989}
3155#endif 4990#endif
3156 4991
3157void 4992void
3158ev_embed_start (EV_P_ ev_embed *w) 4993ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3159{ 4994{
3160 if (expect_false (ev_is_active (w))) 4995 if (ecb_expect_false (ev_is_active (w)))
3161 return; 4996 return;
3162 4997
3163 { 4998 {
3164 struct ev_loop *loop = w->other; 4999 EV_P = w->other;
3165 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 ()));
3166 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);
3167 } 5002 }
3168 5003
3169 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
… …
3184 5019
3185 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
3186} 5021}
3187 5022
3188void 5023void
3189ev_embed_stop (EV_P_ ev_embed *w) 5024ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3190{ 5025{
3191 clear_pending (EV_A_ (W)w); 5026 clear_pending (EV_A_ (W)w);
3192 if (expect_false (!ev_is_active (w))) 5027 if (ecb_expect_false (!ev_is_active (w)))
3193 return; 5028 return;
3194 5029
3195 EV_FREQUENT_CHECK; 5030 EV_FREQUENT_CHECK;
3196 5031
3197 ev_io_stop (EV_A_ &w->io); 5032 ev_io_stop (EV_A_ &w->io);
3198 ev_prepare_stop (EV_A_ &w->prepare); 5033 ev_prepare_stop (EV_A_ &w->prepare);
3199 ev_fork_stop (EV_A_ &w->fork); 5034 ev_fork_stop (EV_A_ &w->fork);
3200 5035
5036 ev_stop (EV_A_ (W)w);
5037
3201 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3202} 5039}
3203#endif 5040#endif
3204 5041
3205#if EV_FORK_ENABLE 5042#if EV_FORK_ENABLE
3206void 5043void
3207ev_fork_start (EV_P_ ev_fork *w) 5044ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3208{ 5045{
3209 if (expect_false (ev_is_active (w))) 5046 if (ecb_expect_false (ev_is_active (w)))
3210 return; 5047 return;
3211 5048
3212 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3213 5050
3214 ev_start (EV_A_ (W)w, ++forkcnt); 5051 ev_start (EV_A_ (W)w, ++forkcnt);
3215 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5052 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3216 forks [forkcnt - 1] = w; 5053 forks [forkcnt - 1] = w;
3217 5054
3218 EV_FREQUENT_CHECK; 5055 EV_FREQUENT_CHECK;
3219} 5056}
3220 5057
3221void 5058void
3222ev_fork_stop (EV_P_ ev_fork *w) 5059ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3223{ 5060{
3224 clear_pending (EV_A_ (W)w); 5061 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 5062 if (ecb_expect_false (!ev_is_active (w)))
3226 return; 5063 return;
3227 5064
3228 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
3229 5066
3230 { 5067 {
… …
3238 5075
3239 EV_FREQUENT_CHECK; 5076 EV_FREQUENT_CHECK;
3240} 5077}
3241#endif 5078#endif
3242 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
3243#if EV_ASYNC_ENABLE 5121#if EV_ASYNC_ENABLE
3244void 5122void
3245ev_async_start (EV_P_ ev_async *w) 5123ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3246{ 5124{
3247 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
3248 return; 5126 return;
3249 5127
5128 w->sent = 0;
5129
3250 evpipe_init (EV_A); 5130 evpipe_init (EV_A);
3251 5131
3252 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3253 5133
3254 ev_start (EV_A_ (W)w, ++asynccnt); 5134 ev_start (EV_A_ (W)w, ++asynccnt);
3255 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5135 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3256 asyncs [asynccnt - 1] = w; 5136 asyncs [asynccnt - 1] = w;
3257 5137
3258 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3259} 5139}
3260 5140
3261void 5141void
3262ev_async_stop (EV_P_ ev_async *w) 5142ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3263{ 5143{
3264 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3266 return; 5146 return;
3267 5147
3268 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3269 5149
3270 { 5150 {
… …
3278 5158
3279 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
3280} 5160}
3281 5161
3282void 5162void
3283ev_async_send (EV_P_ ev_async *w) 5163ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3284{ 5164{
3285 w->sent = 1; 5165 w->sent = 1;
3286 evpipe_write (EV_A_ &gotasync); 5166 evpipe_write (EV_A_ &async_pending);
3287} 5167}
3288#endif 5168#endif
3289 5169
3290/*****************************************************************************/ 5170/*****************************************************************************/
3291 5171
… …
3325 5205
3326 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));
3327} 5207}
3328 5208
3329void 5209void
3330ev_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
3331{ 5211{
3332 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));
3333
3334 if (expect_false (!once))
3335 {
3336 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3337 return;
3338 }
3339 5213
3340 once->cb = cb; 5214 once->cb = cb;
3341 once->arg = arg; 5215 once->arg = arg;
3342 5216
3343 ev_init (&once->io, once_cb_io); 5217 ev_init (&once->io, once_cb_io);
… …
3356} 5230}
3357 5231
3358/*****************************************************************************/ 5232/*****************************************************************************/
3359 5233
3360#if EV_WALK_ENABLE 5234#if EV_WALK_ENABLE
5235ecb_cold
3361void 5236void
3362ev_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
3363{ 5238{
3364 int i, j; 5239 int i, j;
3365 ev_watcher_list *wl, *wn; 5240 ev_watcher_list *wl, *wn;
3366 5241
3367 if (types & (EV_IO | EV_EMBED)) 5242 if (types & (EV_IO | EV_EMBED))
… …
3410 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5285 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3411#endif 5286#endif
3412 5287
3413#if EV_IDLE_ENABLE 5288#if EV_IDLE_ENABLE
3414 if (types & EV_IDLE) 5289 if (types & EV_IDLE)
3415 for (j = NUMPRI; i--; ) 5290 for (j = NUMPRI; j--; )
3416 for (i = idlecnt [j]; i--; ) 5291 for (i = idlecnt [j]; i--; )
3417 cb (EV_A_ EV_IDLE, idles [j][i]); 5292 cb (EV_A_ EV_IDLE, idles [j][i]);
3418#endif 5293#endif
3419 5294
3420#if EV_FORK_ENABLE 5295#if EV_FORK_ENABLE
… …
3428 if (types & EV_ASYNC) 5303 if (types & EV_ASYNC)
3429 for (i = asynccnt; i--; ) 5304 for (i = asynccnt; i--; )
3430 cb (EV_A_ EV_ASYNC, asyncs [i]); 5305 cb (EV_A_ EV_ASYNC, asyncs [i]);
3431#endif 5306#endif
3432 5307
5308#if EV_PREPARE_ENABLE
3433 if (types & EV_PREPARE) 5309 if (types & EV_PREPARE)
3434 for (i = preparecnt; i--; ) 5310 for (i = preparecnt; i--; )
3435#if EV_EMBED_ENABLE 5311# if EV_EMBED_ENABLE
3436 if (ev_cb (prepares [i]) != embed_prepare_cb) 5312 if (ev_cb (prepares [i]) != embed_prepare_cb)
3437#endif 5313# endif
3438 cb (EV_A_ EV_PREPARE, prepares [i]); 5314 cb (EV_A_ EV_PREPARE, prepares [i]);
5315#endif
3439 5316
5317#if EV_CHECK_ENABLE
3440 if (types & EV_CHECK) 5318 if (types & EV_CHECK)
3441 for (i = checkcnt; i--; ) 5319 for (i = checkcnt; i--; )
3442 cb (EV_A_ EV_CHECK, checks [i]); 5320 cb (EV_A_ EV_CHECK, checks [i]);
5321#endif
3443 5322
5323#if EV_SIGNAL_ENABLE
3444 if (types & EV_SIGNAL) 5324 if (types & EV_SIGNAL)
3445 for (i = 0; i < signalmax; ++i) 5325 for (i = 0; i < EV_NSIG - 1; ++i)
3446 for (wl = signals [i].head; wl; ) 5326 for (wl = signals [i].head; wl; )
3447 { 5327 {
3448 wn = wl->next; 5328 wn = wl->next;
3449 cb (EV_A_ EV_SIGNAL, wl); 5329 cb (EV_A_ EV_SIGNAL, wl);
3450 wl = wn; 5330 wl = wn;
3451 } 5331 }
5332#endif
3452 5333
5334#if EV_CHILD_ENABLE
3453 if (types & EV_CHILD) 5335 if (types & EV_CHILD)
3454 for (i = EV_PID_HASHSIZE; i--; ) 5336 for (i = (EV_PID_HASHSIZE); i--; )
3455 for (wl = childs [i]; wl; ) 5337 for (wl = childs [i]; wl; )
3456 { 5338 {
3457 wn = wl->next; 5339 wn = wl->next;
3458 cb (EV_A_ EV_CHILD, wl); 5340 cb (EV_A_ EV_CHILD, wl);
3459 wl = wn; 5341 wl = wn;
3460 } 5342 }
5343#endif
3461/* EV_STAT 0x00001000 /* stat data changed */ 5344/* EV_STAT 0x00001000 /* stat data changed */
3462/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5345/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3463} 5346}
3464#endif 5347#endif
3465 5348
3466#if EV_MULTIPLICITY 5349#if EV_MULTIPLICITY
3467 #include "ev_wrap.h" 5350 #include "ev_wrap.h"
3468#endif 5351#endif
3469 5352
3470#ifdef __cplusplus
3471}
3472#endif
3473

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