ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.318 by root, Tue Nov 17 00:22:28 2009 UTC vs.
Revision 1.514 by root, Fri Dec 20 05:20:50 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_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
146# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif
152# endif 136# endif
153 137
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
154#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
155 155
156#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
157#include <stdlib.h> 195#include <stdlib.h>
196#include <string.h>
158#include <fcntl.h> 197#include <fcntl.h>
159#include <stddef.h> 198#include <stddef.h>
160 199
161#include <stdio.h> 200#include <stdio.h>
162 201
163#include <assert.h> 202#include <assert.h>
164#include <errno.h> 203#include <errno.h>
165#include <sys/types.h> 204#include <sys/types.h>
166#include <time.h> 205#include <time.h>
206#include <limits.h>
167 207
168#include <signal.h> 208#include <signal.h>
169 209
170#ifdef EV_H 210#ifdef EV_H
171# include EV_H 211# include EV_H
172#else 212#else
173# 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
174#endif 225#endif
175 226
176#ifndef _WIN32 227#ifndef _WIN32
177# include <sys/time.h> 228# include <sys/time.h>
178# include <sys/wait.h> 229# include <sys/wait.h>
179# include <unistd.h> 230# include <unistd.h>
180#else 231#else
181# include <io.h> 232# include <io.h>
182# define WIN32_LEAN_AND_MEAN 233# define WIN32_LEAN_AND_MEAN
234# include <winsock2.h>
183# include <windows.h> 235# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 236# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 237# define EV_SELECT_IS_WINSOCKET 1
186# endif 238# endif
239# undef EV_AVOID_STDIO
187#endif 240#endif
188 241
189/* 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 */
190 243
191/* try to deduce the maximum number of signals on this platform */ 244/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 245#if defined EV_NSIG
193/* use what's provided */ 246/* use what's provided */
194#elif defined (NSIG) 247#elif defined NSIG
195# define EV_NSIG (NSIG) 248# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 249#elif defined _NSIG
197# define EV_NSIG (_NSIG) 250# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 251#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 252# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 253#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 254# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 255#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 256# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 257#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 258# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 259#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 260# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 261#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 263#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 265#else
213# error "unable to find value for NSIG, please report" 266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
214/* to make it compile regardless, just remove the above line */ 267#endif
215# define EV_NSIG 65 268
269#ifndef EV_USE_FLOOR
270# define EV_USE_FLOOR 0
216#endif 271#endif
217 272
218#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
220# define EV_USE_CLOCK_SYSCALL 1 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 276# else
222# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
223# endif 278# endif
224#endif 279#endif
225 280
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
226#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 292# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 293# else
230# define EV_USE_MONOTONIC 0 294# define EV_USE_MONOTONIC 0
231# endif 295# endif
232#endif 296#endif
233 297
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 299# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 300#endif
237 301
238#ifndef EV_USE_NANOSLEEP 302#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 303# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 304# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 305# else
242# define EV_USE_NANOSLEEP 0 306# define EV_USE_NANOSLEEP 0
243# endif 307# endif
244#endif 308#endif
245 309
246#ifndef EV_USE_SELECT 310#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 311# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 312#endif
249 313
250#ifndef EV_USE_POLL 314#ifndef EV_USE_POLL
251# ifdef _WIN32 315# ifdef _WIN32
252# define EV_USE_POLL 0 316# define EV_USE_POLL 0
253# else 317# else
254# define EV_USE_POLL 1 318# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 319# endif
256#endif 320#endif
257 321
258#ifndef EV_USE_EPOLL 322#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 323# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 324# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 325# else
262# define EV_USE_EPOLL 0 326# define EV_USE_EPOLL 0
263# endif 327# endif
264#endif 328#endif
265 329
… …
269 333
270#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
271# define EV_USE_PORT 0 335# define EV_USE_PORT 0
272#endif 336#endif
273 337
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
274#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 356# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 357# else
278# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
279# endif 359# endif
280#endif 360#endif
281 361
282#ifndef EV_PID_HASHSIZE 362#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 363# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 364#endif
289 365
290#ifndef EV_INOTIFY_HASHSIZE 366#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 367# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 368#endif
297 369
298#ifndef EV_USE_EVENTFD 370#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 371# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 372# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 373# else
302# define EV_USE_EVENTFD 0 374# define EV_USE_EVENTFD 0
303# endif 375# endif
304#endif 376#endif
305 377
306#ifndef EV_USE_SIGNALFD 378#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 379# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 380# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 381# else
310# define EV_USE_SIGNALFD 0 382# define EV_USE_SIGNALFD 0
311# endif 383# endif
312#endif 384#endif
313 385
… …
316# define EV_USE_4HEAP 1 388# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 389# define EV_HEAP_CACHE_AT 1
318#endif 390#endif
319 391
320#ifndef EV_VERIFY 392#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 393# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 394#endif
323 395
324#ifndef EV_USE_4HEAP 396#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 397# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 398#endif
327 399
328#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
329# 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
330#endif 418#endif
331 419
332/* 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, */
333/* which makes programs even slower. might work on other unices, too. */ 421/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 423# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
340# else 429# else
341# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
342# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
343# endif 432# endif
344#endif 433#endif
… …
358#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
359# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
361#endif 450#endif
362 451
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
363#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 461/* hp-ux has it in sys/time.h, which we unconditionally include above */
462# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 463# include <sys/select.h>
366# endif 464# endif
367#endif 465#endif
368 466
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
369#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 493# include <sys/statfs.h>
372# include <sys/inotify.h> 494# include <sys/inotify.h>
373/* 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 */
374# ifndef IN_DONT_FOLLOW 496# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 497# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 498# define EV_USE_INOTIFY 0
377# endif 499# endif
378#endif
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 500#endif
383 501
384#if EV_USE_EVENTFD 502#if EV_USE_EVENTFD
385/* 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 */
386# include <stdint.h> 504# include <stdint.h>
… …
392# define EFD_CLOEXEC O_CLOEXEC 510# define EFD_CLOEXEC O_CLOEXEC
393# else 511# else
394# define EFD_CLOEXEC 02000000 512# define EFD_CLOEXEC 02000000
395# endif 513# endif
396# endif 514# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 515EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 516#endif
405 517
406#if EV_USE_SIGNALFD 518#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 519/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 520# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 526# define SFD_CLOEXEC O_CLOEXEC
415# else 527# else
416# define SFD_CLOEXEC 02000000 528# define SFD_CLOEXEC 02000000
417# endif 529# endif
418# endif 530# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 531EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 532
424struct signalfd_siginfo 533struct signalfd_siginfo
425{ 534{
426 uint32_t ssi_signo; 535 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 536 char pad[128 - sizeof (uint32_t)];
428}; 537};
429# ifdef __cplusplus
430}
431# endif 538#endif
432#endif
433 539
434 540/*****************************************************************************/
435/**/
436 541
437#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 544#else
440# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
441#endif 546#endif
442 547
443/* 548/*
444 * This is used to avoid floating point rounding problems. 549 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 550 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 551 */
451#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 */
452 554
453#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) */
454#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) */
455 557
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;
456#if __GNUC__ >= 4 631 #if __GNUC__
457# define expect(expr,value) __builtin_expect ((expr),(value)) 632 typedef signed long long int64_t;
458# 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
459#else 647#else
460# define expect(expr,value) (expr) 648 #include <inttypes.h>
461# define noinline 649 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 650 #define ECB_PTRSIZE 8
463# define inline 651 #else
652 #define ECB_PTRSIZE 4
653 #endif
464# 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
465#endif 665 #endif
666#endif
466 667
467#define expect_false(expr) expect ((expr) != 0, 0) 668/* many compilers define _GNUC_ to some versions but then only implement
468#define expect_true(expr) expect ((expr) != 0, 1) 669 * what their idiot authors think are the "more important" extensions,
469#define inline_size static inline 670 * causing enormous grief in return for some better fake benchmark numbers.
470 671 * or so.
471#if EV_MINIMAL 672 * we try to detect these and simply assume they are not gcc - if they have
472# 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
473#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
474# define inline_speed static inline 1616# define inline_speed ecb_inline
1617#else
1618# define inline_speed ecb_noinline static
475#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/*****************************************************************************/
476 1686
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 1688
479#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
480# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
481#else 1691#else
482# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
483#endif 1693#endif
484 1694
485#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
486#define EMPTY2(a,b) /* used to suppress some warnings */
487 1696
488typedef ev_watcher *W; 1697typedef ev_watcher *W;
489typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
490typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
491 1700
492#define ev_active(w) ((W)(w))->active 1701#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 1702#define ev_at(w) ((WT)(w))->at
494 1703
495#if EV_USE_REALTIME 1704#if EV_USE_REALTIME
496/* 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 */
497/* giving it a reasonably high chance of working on typical architetcures */ 1706/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1707static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 1708#endif
500 1709
501#if EV_USE_MONOTONIC 1710#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1711static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 1713
505#ifndef EV_FD_TO_WIN32_HANDLE 1714#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1715# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 1716#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 1717#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1718# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 1719#endif
511#ifndef EV_WIN32_CLOSE_FD 1720#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 1721# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 1722#endif
514 1723
… …
516# include "ev_win32.c" 1725# include "ev_win32.c"
517#endif 1726#endif
518 1727
519/*****************************************************************************/ 1728/*****************************************************************************/
520 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
521static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
522 1836
1837ecb_cold
523void 1838void
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
525{ 1840{
526 syserr_cb = cb; 1841 syserr_cb = cb;
527} 1842}
528 1843
529static void noinline 1844ecb_noinline ecb_cold
1845static void
530ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
531{ 1847{
532 if (!msg) 1848 if (!msg)
533 msg = "(libev) system error"; 1849 msg = "(libev) system error";
534 1850
535 if (syserr_cb) 1851 if (syserr_cb)
536 syserr_cb (msg); 1852 syserr_cb (msg);
537 else 1853 else
538 { 1854 {
1855#if EV_AVOID_STDIO
1856 ev_printerr (msg);
1857 ev_printerr (": ");
1858 ev_printerr (strerror (errno));
1859 ev_printerr ("\n");
1860#else
539 perror (msg); 1861 perror (msg);
1862#endif
540 abort (); 1863 abort ();
541 } 1864 }
542} 1865}
543 1866
544static void * 1867static void *
545ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
546{ 1869{
547 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
548 * 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
549 * 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.
550 */ 1875 */
551 1876
552 if (size) 1877 if (size)
553 return realloc (ptr, size); 1878 return realloc (ptr, size);
554 1879
555 free (ptr); 1880 free (ptr);
556 return 0; 1881 return 0;
557} 1882}
558 1883
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
560 1885
1886ecb_cold
561void 1887void
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
563{ 1889{
564 alloc = cb; 1890 alloc = cb;
565} 1891}
566 1892
567inline_speed void * 1893inline_speed void *
… …
569{ 1895{
570 ptr = alloc (ptr, size); 1896 ptr = alloc (ptr, size);
571 1897
572 if (!ptr && size) 1898 if (!ptr && size)
573 { 1899 {
1900#if EV_AVOID_STDIO
1901 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1902#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1903 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1904#endif
575 abort (); 1905 abort ();
576 } 1906 }
577 1907
578 return ptr; 1908 return ptr;
579} 1909}
… …
590typedef struct 1920typedef struct
591{ 1921{
592 WL head; 1922 WL head;
593 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
594 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) */
595 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 */
596 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
597#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1929#endif
600#if EV_SELECT_IS_WINSOCKET 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1931 SOCKET handle;
1932#endif
1933#if EV_USE_IOCP
1934 OVERLAPPED or, ow;
602#endif 1935#endif
603} ANFD; 1936} ANFD;
604 1937
605/* stores the pending event set for a given watcher */ 1938/* stores the pending event set for a given watcher */
606typedef struct 1939typedef struct
… …
648 #undef VAR 1981 #undef VAR
649 }; 1982 };
650 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
651 1984
652 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
653 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 */
654 1987
655#else 1988#else
656 1989
657 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 */
658 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1992 #include "ev_vars.h"
660 #undef VAR 1993 #undef VAR
661 1994
662 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
663 1996
664#endif 1997#endif
665 1998
666#if EV_MINIMAL < 2 1999#if EV_FEATURE_API
667# 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)
668# 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)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 2003#else
671# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 2007#endif
675 2008
676#define EVUNLOOP_RECURSE 0x80 2009#define EVBREAK_RECURSE 0x80
677 2010
678/*****************************************************************************/ 2011/*****************************************************************************/
679 2012
680#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
681ev_tstamp 2014ev_tstamp
682ev_time (void) 2015ev_time (void) EV_NOEXCEPT
683{ 2016{
684#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
685 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
686 { 2019 {
687 struct timespec ts; 2020 struct timespec ts;
688 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
689 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
690 } 2023 }
691#endif 2024#endif
692 2025
2026 {
693 struct timeval tv; 2027 struct timeval tv;
694 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
695 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
696} 2031}
697#endif 2032#endif
698 2033
699inline_size ev_tstamp 2034inline_size ev_tstamp
700get_clock (void) 2035get_clock (void)
701{ 2036{
702#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
703 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
704 { 2039 {
705 struct timespec ts; 2040 struct timespec ts;
706 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
707 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
708 } 2043 }
709#endif 2044#endif
710 2045
711 return ev_time (); 2046 return ev_time ();
712} 2047}
713 2048
714#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
715ev_tstamp 2050ev_tstamp
716ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
717{ 2052{
718 return ev_rt_now; 2053 return ev_rt_now;
719} 2054}
720#endif 2055#endif
721 2056
722void 2057void
723ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
724{ 2059{
725 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
726 { 2061 {
727#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
728 struct timespec ts; 2063 struct timespec ts;
729 2064
730 ts.tv_sec = (time_t)delay; 2065 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
734#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) */
735 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
736#else 2071#else
737 struct timeval tv; 2072 struct timeval tv;
738
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741 2073
742 /* 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 */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 2076 /* by older ones */
2077 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 2078 select (0, 0, 0, 0, &tv);
746#endif 2079#endif
747 } 2080 }
748} 2081}
749 2082
750/*****************************************************************************/ 2083/*****************************************************************************/
751 2084
752#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 */
753 2086
754/* find a suitable new size for the given array, */ 2087/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 2088/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 2089inline_size int
757array_nextsize (int elem, int cur, int cnt) 2090array_nextsize (int elem, int cur, int cnt)
758{ 2091{
759 int ncur = cur + 1; 2092 int ncur = cur + 1;
760 2093
761 do 2094 do
762 ncur <<= 1; 2095 ncur <<= 1;
763 while (cnt > ncur); 2096 while (cnt > ncur);
764 2097
765 /* 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 */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 2100 {
768 ncur *= elem; 2101 ncur *= elem;
769 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);
770 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
772 } 2105 }
773 2106
774 return ncur; 2107 return ncur;
775} 2108}
776 2109
777static noinline void * 2110ecb_noinline ecb_cold
2111static void *
778array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
779{ 2113{
780 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
782} 2116}
783 2117
2118#define array_needsize_noinit(base,offset,count)
2119
784#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
786 2122
787#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
789 { \ 2125 { \
790 int ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
794 } 2130 }
795 2131
796#if 0 2132#if 0
797#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
798 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
807 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
808 2144
809/*****************************************************************************/ 2145/*****************************************************************************/
810 2146
811/* dummy callback for pending events */ 2147/* dummy callback for pending events */
812static void noinline 2148ecb_noinline
2149static void
813pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
814{ 2151{
815} 2152}
816 2153
817void noinline 2154ecb_noinline
2155void
818ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
819{ 2157{
820 W w_ = (W)w; 2158 W w_ = (W)w;
821 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
822 2160
823 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
824 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
825 else 2163 else
826 { 2164 {
827 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
828 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
829 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
830 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
831 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
832} 2172}
833 2173
834inline_speed void 2174inline_speed void
835feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
836{ 2176{
837 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
838 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
839} 2179}
840 2180
841inline_size void 2181inline_size void
842feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
856} 2196}
857 2197
858/*****************************************************************************/ 2198/*****************************************************************************/
859 2199
860inline_speed void 2200inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 2201fd_event_nocheck (EV_P_ int fd, int revents)
862{ 2202{
863 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
864 ev_io *w; 2204 ev_io *w;
865 2205
866 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)
… …
877inline_speed void 2217inline_speed void
878fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
879{ 2219{
880 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
881 2221
882 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
884} 2224}
885 2225
886void 2226void
887ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
888{ 2228{
889 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
891} 2231}
892 2232
893/* make sure the external fd watch events are in-sync */ 2233/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 2234/* with the kernel/libev internal state */
895inline_size void 2235inline_size void
896fd_reify (EV_P) 2236fd_reify (EV_P)
897{ 2237{
898 int i; 2238 int i;
899 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
900 for (i = 0; i < fdchangecnt; ++i) 2265 for (i = 0; i < fdchangecnt; ++i)
901 { 2266 {
902 int fd = fdchanges [i]; 2267 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 2268 ANFD *anfd = anfds + fd;
904 ev_io *w; 2269 ev_io *w;
905 2270
906 unsigned char events = 0; 2271 unsigned char o_events = anfd->events;
2272 unsigned char o_reify = anfd->reify;
907 2273
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2274 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 2275
911#if EV_SELECT_IS_WINSOCKET 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 2277 {
914 unsigned long arg; 2278 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2279
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2280 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2281 anfd->events |= (unsigned char)w->events;
2282
2283 if (o_events != anfd->events)
2284 o_reify = EV__IOFDSET; /* actually |= */
917 } 2285 }
918#endif
919 2286
920 { 2287 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 2288 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 2289 }
931 2290
932 fdchangecnt = 0; 2291 fdchangecnt = 0;
933} 2292}
934 2293
935/* something about the given fd changed */ 2294/* something about the given fd changed */
936inline_size void 2295inline_size
2296void
937fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
938{ 2298{
939 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
940 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
941 2301
942 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
943 { 2303 {
944 ++fdchangecnt; 2304 ++fdchangecnt;
945 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
946 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
947 } 2307 }
948} 2308}
949 2309
950/* 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 */
951inline_speed void 2311inline_speed ecb_cold void
952fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
953{ 2313{
954 ev_io *w; 2314 ev_io *w;
955 2315
956 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 2318 ev_io_stop (EV_A_ w);
959 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);
960 } 2320 }
961} 2321}
962 2322
963/* check whether the given fd is atcually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
964inline_size int 2324inline_size ecb_cold int
965fd_valid (int fd) 2325fd_valid (int fd)
966{ 2326{
967#ifdef _WIN32 2327#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 2329#else
970 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
971#endif 2331#endif
972} 2332}
973 2333
974/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
975static void noinline 2335ecb_noinline ecb_cold
2336static void
976fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
977{ 2338{
978 int fd; 2339 int fd;
979 2340
980 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
984} 2345}
985 2346
986/* 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 */
987static void noinline 2348ecb_noinline ecb_cold
2349static void
988fd_enomem (EV_P) 2350fd_enomem (EV_P)
989{ 2351{
990 int fd; 2352 int fd;
991 2353
992 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
996 break; 2358 break;
997 } 2359 }
998} 2360}
999 2361
1000/* 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 */
1001static void noinline 2363ecb_noinline
2364static void
1002fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1003{ 2366{
1004 int fd; 2367 int fd;
1005 2368
1006 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1010 anfds [fd].emask = 0; 2373 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2374 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 2375 }
1013} 2376}
1014 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
1015/*****************************************************************************/ 2392/*****************************************************************************/
1016 2393
1017/* 2394/*
1018 * 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
1019 * 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
1020 * the branching factor of the d-tree. 2397 * the branching factor of the d-tree.
1021 */ 2398 */
1022 2399
1023/* 2400/*
… …
1045 ev_tstamp minat; 2422 ev_tstamp minat;
1046 ANHE *minpos; 2423 ANHE *minpos;
1047 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1048 2425
1049 /* find minimum child */ 2426 /* find minimum child */
1050 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1051 { 2428 {
1052 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1053 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));
1054 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));
1055 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));
1056 } 2433 }
1057 else if (pos < E) 2434 else if (pos < E)
1058 { 2435 {
1059 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1060 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));
1061 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));
1062 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));
1063 } 2440 }
1064 else 2441 else
1065 break; 2442 break;
1066 2443
1067 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1075 2452
1076 heap [k] = he; 2453 heap [k] = he;
1077 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1078} 2455}
1079 2456
1080#else /* 4HEAP */ 2457#else /* not 4HEAP */
1081 2458
1082#define HEAP0 1 2459#define HEAP0 1
1083#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1084#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1085 2462
… …
1171 2548
1172static ANSIG signals [EV_NSIG - 1]; 2549static ANSIG signals [EV_NSIG - 1];
1173 2550
1174/*****************************************************************************/ 2551/*****************************************************************************/
1175 2552
1176/* used to prepare libev internal fd's */ 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* 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
1178inline_speed void 2601inline_speed void
1179fd_intern (int fd) 2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1180{ 2603{
1181#ifdef _WIN32 2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 2605
1190static void noinline 2606 if (ecb_expect_true (*flag))
1191evpipe_init (EV_P) 2607 return;
1192{ 2608
1193 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)
1194 { 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
1195#if EV_USE_EVENTFD 2625#if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2626 if (evpipe [0] < 0)
1197 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0);
1199
1200 if (evfd >= 0)
1201 { 2627 {
1202 evpipe [0] = -1; 2628 uint64_t counter = 1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 2629 write (evpipe [1], &counter, sizeof (uint64_t));
1204 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 2630 }
1206 else 2631 else
1207#endif 2632#endif
1208 { 2633 {
1209 while (pipe (evpipe)) 2634#ifdef _WIN32
1210 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1211 2636 DWORD sent;
1212 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1213 fd_intern (evpipe [1]); 2638 buf.len = 1;
1214 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
1215 } 2643 }
1216
1217 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 }
1220}
1221
1222inline_size void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{
1225 if (!*flag)
1226 {
1227 int old_errno = errno; /* save errno because write might clobber it */
1228
1229 *flag = 1;
1230
1231#if EV_USE_EVENTFD
1232 if (evfd >= 0)
1233 {
1234 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t));
1236 }
1237 else
1238#endif
1239 write (evpipe [1], &old_errno, 1);
1240 2644
1241 errno = old_errno; 2645 errno = old_errno;
1242 } 2646 }
1243} 2647}
1244 2648
… …
1247static void 2651static void
1248pipecb (EV_P_ ev_io *iow, int revents) 2652pipecb (EV_P_ ev_io *iow, int revents)
1249{ 2653{
1250 int i; 2654 int i;
1251 2655
2656 if (revents & EV_READ)
2657 {
1252#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1253 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1254 { 2660 {
1255 uint64_t counter; 2661 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1257 } 2663 }
1258 else 2664 else
1259#endif 2665#endif
1260 { 2666 {
1261 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
1262 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
2678 }
1263 } 2679 }
1264 2680
2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2684
2685#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 2686 if (sig_pending)
1266 { 2687 {
1267 sig_pending = 0; 2688 sig_pending = 0;
1268 2689
2690 ECB_MEMORY_FENCE;
2691
1269 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1272 } 2695 }
2696#endif
1273 2697
1274#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1275 if (async_pending) 2699 if (async_pending)
1276 { 2700 {
1277 async_pending = 0; 2701 async_pending = 0;
2702
2703 ECB_MEMORY_FENCE;
1278 2704
1279 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1280 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1281 { 2707 {
1282 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1283 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1284 } 2711 }
1285 } 2712 }
1286#endif 2713#endif
1287} 2714}
1288 2715
1289/*****************************************************************************/ 2716/*****************************************************************************/
1290 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
1291static void 2734static void
1292ev_sighandler (int signum) 2735ev_sighandler (int signum)
1293{ 2736{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 2737#ifdef _WIN32
1299 signal (signum, ev_sighandler); 2738 signal (signum, ev_sighandler);
1300#endif 2739#endif
1301 2740
1302 signals [signum - 1].pending = 1; 2741 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 2742}
1305 2743
1306void noinline 2744ecb_noinline
2745void
1307ev_feed_signal_event (EV_P_ int signum) 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1308{ 2747{
1309 WL w; 2748 WL w;
1310 2749
1311 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1312 return; 2751 return;
1313 2752
1314 --signum; 2753 --signum;
1315 2754
1316#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1317 /* it is permissible to try to feed a signal to the wrong loop */ 2756 /* it is permissible to try to feed a signal to the wrong loop */
1318 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1319 2758
1320 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1321 return; 2760 return;
1322#endif 2761#endif
1323 2762
1324 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1325 2765
1326 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1327 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1328} 2768}
1329 2769
… …
1345 break; 2785 break;
1346 } 2786 }
1347} 2787}
1348#endif 2788#endif
1349 2789
2790#endif
2791
1350/*****************************************************************************/ 2792/*****************************************************************************/
1351 2793
2794#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2795static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2796
1356static ev_signal childev; 2797static ev_signal childev;
1357 2798
1358#ifndef WIFCONTINUED 2799#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2800# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2805child_reap (EV_P_ int chain, int pid, int status)
1365{ 2806{
1366 ev_child *w; 2807 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2808 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2809
1369 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)
1370 { 2811 {
1371 if ((w->pid == pid || !w->pid) 2812 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2813 && (!traced || (w->flags & 1)))
1373 { 2814 {
1374 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 */
… …
1399 /* 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 */
1400 /* 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 */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2842 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2843
1403 child_reap (EV_A_ pid, pid, status); 2844 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2845 if ((EV_PID_HASHSIZE) > 1)
1405 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 */
1406} 2847}
1407 2848
1408#endif 2849#endif
1409 2850
1410/*****************************************************************************/ 2851/*****************************************************************************/
1411 2852
2853#if EV_USE_IOCP
2854# include "ev_iocp.c"
2855#endif
1412#if EV_USE_PORT 2856#if EV_USE_PORT
1413# include "ev_port.c" 2857# include "ev_port.c"
1414#endif 2858#endif
1415#if EV_USE_KQUEUE 2859#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1417#endif 2861#endif
1418#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1419# include "ev_epoll.c" 2863# include "ev_epoll.c"
1420#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
1421#if EV_USE_POLL 2871#if EV_USE_POLL
1422# include "ev_poll.c" 2872# include "ev_poll.c"
1423#endif 2873#endif
1424#if EV_USE_SELECT 2874#if EV_USE_SELECT
1425# include "ev_select.c" 2875# include "ev_select.c"
1426#endif 2876#endif
1427 2877
1428int 2878ecb_cold int
1429ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1430{ 2880{
1431 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1432} 2882}
1433 2883
1434int 2884ecb_cold int
1435ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1436{ 2886{
1437 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
1438} 2888}
1439 2889
1440/* 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 */
1441int inline_size 2891inline_size ecb_cold int
1442enable_secure (void) 2892enable_secure (void)
1443{ 2893{
1444#ifdef _WIN32 2894#ifdef _WIN32
1445 return 0; 2895 return 0;
1446#else 2896#else
1447 return getuid () != geteuid () 2897 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2898 || getgid () != getegid ();
1449#endif 2899#endif
1450} 2900}
1451 2901
2902ecb_cold
1452unsigned int 2903unsigned int
1453ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
1454{ 2905{
1455 unsigned int flags = 0; 2906 unsigned int flags = 0;
1456 2907
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1458 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1459 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;
1460 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1462 2915
1463 return flags; 2916 return flags;
1464} 2917}
1465 2918
2919ecb_cold
1466unsigned int 2920unsigned int
1467ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
1468{ 2922{
1469 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
1470 2924
1471#ifndef __NetBSD__ 2925#ifndef __NetBSD__
1472 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
1476#ifdef __APPLE__ 2930#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2931 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2932 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 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 */
1480#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
1481 2947
1482 return flags; 2948 return flags;
1483} 2949}
1484 2950
2951ecb_cold
1485unsigned int 2952unsigned int
1486ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
1487{ 2954{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1489 2956
1490 /* 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 */
1491 /* please fix it and tell me how to detect the fix */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1492 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 */
1493 2967
1494 return flags; 2968 return flags;
1495} 2969}
1496 2970
1497unsigned int 2971unsigned int
1498ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
1499{ 2973{
1500 return backend; 2974 return backend;
1501} 2975}
1502 2976
1503#if EV_MINIMAL < 2 2977#if EV_FEATURE_API
1504unsigned int 2978unsigned int
1505ev_loop_count (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
1506{ 2980{
1507 return loop_count; 2981 return loop_count;
1508} 2982}
1509 2983
1510unsigned int 2984unsigned int
1511ev_loop_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
1512{ 2986{
1513 return loop_depth; 2987 return loop_depth;
1514} 2988}
1515 2989
1516void 2990void
1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1518{ 2992{
1519 io_blocktime = interval; 2993 io_blocktime = interval;
1520} 2994}
1521 2995
1522void 2996void
1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1524{ 2998{
1525 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
1526} 3000}
1527 3001
1528void 3002void
1529ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1530{ 3004{
1531 userdata = data; 3005 userdata = data;
1532} 3006}
1533 3007
1534void * 3008void *
1535ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
1536{ 3010{
1537 return userdata; 3011 return userdata;
1538} 3012}
1539 3013
3014void
1540void 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
1541{ 3016{
1542 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
1543} 3018}
1544 3019
3020void
1545void 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
1546{ 3022{
1547 release_cb = release; 3023 release_cb = release;
1548 acquire_cb = acquire; 3024 acquire_cb = acquire;
1549} 3025}
1550#endif 3026#endif
1551 3027
1552/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
1553static void noinline 3029ecb_noinline ecb_cold
3030static void
1554loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1555{ 3032{
1556 if (!backend) 3033 if (!backend)
1557 { 3034 {
3035 origflags = flags;
3036
1558#if EV_USE_REALTIME 3037#if EV_USE_REALTIME
1559 if (!have_realtime) 3038 if (!have_realtime)
1560 { 3039 {
1561 struct timespec ts; 3040 struct timespec ts;
1562 3041
… …
1584 if (!(flags & EVFLAG_NOENV) 3063 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 3064 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 3065 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 3066 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 3067
1589 ev_rt_now = ev_time (); 3068 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 3069 mn_now = get_clock ();
1591 now_floor = mn_now; 3070 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 3071 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 3072#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 3073 invoke_cb = ev_invoke_pending;
1595#endif 3074#endif
1596 3075
1597 io_blocktime = 0.; 3076 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 3077 timeout_blocktime = 0.;
1599 backend = 0; 3078 backend = 0;
1600 backend_fd = -1; 3079 backend_fd = -1;
1601 sig_pending = 0; 3080 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
1603 async_pending = 0; 3082 async_pending = 0;
1604#endif 3083#endif
3084 pipe_write_skipped = 0;
3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
1605#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 3090#endif
1608#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 3093#endif
1611 3094
1612 if (!(flags & 0x0000ffffU)) 3095 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
1614 3097
3098#if EV_USE_IOCP
3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3100#endif
1615#if EV_USE_PORT 3101#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 3103#endif
1618#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
1619 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);
1620#endif 3112#endif
1621#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
1622 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1623#endif 3115#endif
1624#if EV_USE_POLL 3116#if EV_USE_POLL
1625 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1626#endif 3118#endif
1627#if EV_USE_SELECT 3119#if EV_USE_SELECT
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1629#endif 3121#endif
1630 3122
1631 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
1632 3124
3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 3126 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 3127 ev_set_priority (&pipe_w, EV_MAXPRI);
3128#endif
1635 } 3129 }
1636} 3130}
1637 3131
1638/* free up a loop structure */ 3132/* free up a loop structure */
1639static void noinline 3133ecb_cold
3134void
1640loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
1641{ 3136{
1642 int i; 3137 int i;
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
1643 3161
1644 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
1645 { 3163 {
1646 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
1648 3166
1649#if EV_USE_EVENTFD
1650 if (evfd >= 0)
1651 close (evfd);
1652#endif
1653
1654 if (evpipe [0] >= 0)
1655 {
1656 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1657 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1658 }
1659 } 3169 }
1660 3170
1661#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
1663 close (sigfd); 3173 close (sigfd);
… …
1669#endif 3179#endif
1670 3180
1671 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
1672 close (backend_fd); 3182 close (backend_fd);
1673 3183
3184#if EV_USE_IOCP
3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3186#endif
1674#if EV_USE_PORT 3187#if EV_USE_PORT
1675 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1676#endif 3189#endif
1677#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
1678 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);
1679#endif 3198#endif
1680#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
1681 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1682#endif 3201#endif
1683#if EV_USE_POLL 3202#if EV_USE_POLL
1684 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1685#endif 3204#endif
1686#if EV_USE_SELECT 3205#if EV_USE_SELECT
1687 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1688#endif 3207#endif
1689 3208
1690 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
1691 { 3210 {
1692 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
1705 array_free (periodic, EMPTY); 3224 array_free (periodic, EMPTY);
1706#endif 3225#endif
1707#if EV_FORK_ENABLE 3226#if EV_FORK_ENABLE
1708 array_free (fork, EMPTY); 3227 array_free (fork, EMPTY);
1709#endif 3228#endif
3229#if EV_CLEANUP_ENABLE
3230 array_free (cleanup, EMPTY);
3231#endif
1710 array_free (prepare, EMPTY); 3232 array_free (prepare, EMPTY);
1711 array_free (check, EMPTY); 3233 array_free (check, EMPTY);
1712#if EV_ASYNC_ENABLE 3234#if EV_ASYNC_ENABLE
1713 array_free (async, EMPTY); 3235 array_free (async, EMPTY);
1714#endif 3236#endif
1715 3237
1716 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
1717} 3248}
1718 3249
1719#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1720inline_size void infy_fork (EV_P); 3251inline_size void infy_fork (EV_P);
1721#endif 3252#endif
1722 3253
1723inline_size void 3254inline_size void
1724loop_fork (EV_P) 3255loop_fork (EV_P)
1725{ 3256{
1726#if EV_USE_PORT 3257#if EV_USE_PORT
1727 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1728#endif 3259#endif
1729#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
1730 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);
1731#endif 3268#endif
1732#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
1733 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1734#endif 3271#endif
1735#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
1736 infy_fork (EV_A); 3273 infy_fork (EV_A);
1737#endif 3274#endif
1738 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1739 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
1740 { 3278 {
1741 /* this "locks" the handlers against writing to the pipe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1742 /* while we modify the fd vars */
1743 sig_pending = 1;
1744#if EV_ASYNC_ENABLE
1745 async_pending = 1;
1746#endif
1747 3280
1748 ev_ref (EV_A); 3281 ev_ref (EV_A);
1749 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
1750 3283
1751#if EV_USE_EVENTFD
1752 if (evfd >= 0)
1753 close (evfd);
1754#endif
1755
1756 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
1757 {
1758 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
1759 EV_WIN32_CLOSE_FD (evpipe [1]);
1760 }
1761 3286
1762 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
1763 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
1764 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1765 } 3290 }
3291#endif
1766 3292
1767 postfork = 0; 3293 postfork = 0;
1768} 3294}
1769 3295
1770#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
1771 3297
3298ecb_cold
1772struct ev_loop * 3299struct ev_loop *
1773ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
1774{ 3301{
1775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1776 3303
1777 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
1778 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
1779 3306
1780 if (ev_backend (EV_A)) 3307 if (ev_backend (EV_A))
1781 return EV_A; 3308 return EV_A;
1782 3309
3310 ev_free (EV_A);
1783 return 0; 3311 return 0;
1784} 3312}
1785 3313
1786void
1787ev_loop_destroy (EV_P)
1788{
1789 loop_destroy (EV_A);
1790 ev_free (loop);
1791}
1792
1793void
1794ev_loop_fork (EV_P)
1795{
1796 postfork = 1; /* must be in line with ev_default_fork */
1797}
1798#endif /* multiplicity */ 3314#endif /* multiplicity */
1799 3315
1800#if EV_VERIFY 3316#if EV_VERIFY
1801static void noinline 3317ecb_noinline ecb_cold
3318static void
1802verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
1803{ 3320{
1804 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));
1805 3322
1806 if (w->pending) 3323 if (w->pending)
1807 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));
1808} 3325}
1809 3326
1810static void noinline 3327ecb_noinline ecb_cold
3328static void
1811verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
1812{ 3330{
1813 int i; 3331 int i;
1814 3332
1815 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1820 3338
1821 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1822 } 3340 }
1823} 3341}
1824 3342
1825static void noinline 3343ecb_noinline ecb_cold
3344static void
1826array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
1827{ 3346{
1828 while (cnt--) 3347 while (cnt--)
1829 { 3348 {
1830 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1831 verify_watcher (EV_A_ ws [cnt]); 3350 verify_watcher (EV_A_ ws [cnt]);
1832 } 3351 }
1833} 3352}
1834#endif 3353#endif
1835 3354
1836#if EV_MINIMAL < 2 3355#if EV_FEATURE_API
1837void 3356void ecb_cold
1838ev_loop_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
1839{ 3358{
1840#if EV_VERIFY 3359#if EV_VERIFY
1841 int i; 3360 int i;
1842 WL w; 3361 WL w, w2;
1843 3362
1844 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
1845 3364
1846 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
1847 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
1848 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1849 3368
1850 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
1851 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
1852 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
1853 { 3375 {
1854 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
1855 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));
1856 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));
1857 } 3386 }
3387 }
1858 3388
1859 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
1860 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
1861 3391
1862#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
1877#if EV_FORK_ENABLE 3407#if EV_FORK_ENABLE
1878 assert (forkmax >= forkcnt); 3408 assert (forkmax >= forkcnt);
1879 array_verify (EV_A_ (W *)forks, forkcnt); 3409 array_verify (EV_A_ (W *)forks, forkcnt);
1880#endif 3410#endif
1881 3411
3412#if EV_CLEANUP_ENABLE
3413 assert (cleanupmax >= cleanupcnt);
3414 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3415#endif
3416
1882#if EV_ASYNC_ENABLE 3417#if EV_ASYNC_ENABLE
1883 assert (asyncmax >= asynccnt); 3418 assert (asyncmax >= asynccnt);
1884 array_verify (EV_A_ (W *)asyncs, asynccnt); 3419 array_verify (EV_A_ (W *)asyncs, asynccnt);
1885#endif 3420#endif
1886 3421
3422#if EV_PREPARE_ENABLE
1887 assert (preparemax >= preparecnt); 3423 assert (preparemax >= preparecnt);
1888 array_verify (EV_A_ (W *)prepares, preparecnt); 3424 array_verify (EV_A_ (W *)prepares, preparecnt);
3425#endif
1889 3426
3427#if EV_CHECK_ENABLE
1890 assert (checkmax >= checkcnt); 3428 assert (checkmax >= checkcnt);
1891 array_verify (EV_A_ (W *)checks, checkcnt); 3429 array_verify (EV_A_ (W *)checks, checkcnt);
3430#endif
1892 3431
1893# if 0 3432# if 0
3433#if EV_CHILD_ENABLE
1894 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)
1895 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3435 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3436#endif
1896# endif 3437# endif
1897#endif 3438#endif
1898} 3439}
1899#endif 3440#endif
1900 3441
1901#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
1902struct ev_loop * 3444struct ev_loop *
1903ev_default_loop_init (unsigned int flags)
1904#else 3445#else
1905int 3446int
3447#endif
1906ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
1907#endif
1908{ 3449{
1909 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
1910 { 3451 {
1911#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
1912 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1916 3457
1917 loop_init (EV_A_ flags); 3458 loop_init (EV_A_ flags);
1918 3459
1919 if (ev_backend (EV_A)) 3460 if (ev_backend (EV_A))
1920 { 3461 {
1921#ifndef _WIN32 3462#if EV_CHILD_ENABLE
1922 ev_signal_init (&childev, childcb, SIGCHLD); 3463 ev_signal_init (&childev, childcb, SIGCHLD);
1923 ev_set_priority (&childev, EV_MAXPRI); 3464 ev_set_priority (&childev, EV_MAXPRI);
1924 ev_signal_start (EV_A_ &childev); 3465 ev_signal_start (EV_A_ &childev);
1925 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3466 ev_unref (EV_A); /* child watcher should not keep loop alive */
1926#endif 3467#endif
… …
1931 3472
1932 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
1933} 3474}
1934 3475
1935void 3476void
1936ev_default_destroy (void) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
1937{ 3478{
1938#if EV_MULTIPLICITY 3479 postfork = 1;
1939 EV_P = ev_default_loop_ptr;
1940#endif
1941
1942 ev_default_loop_ptr = 0;
1943
1944#ifndef _WIN32
1945 ev_ref (EV_A); /* child watcher */
1946 ev_signal_stop (EV_A_ &childev);
1947#endif
1948
1949 loop_destroy (EV_A);
1950}
1951
1952void
1953ev_default_fork (void)
1954{
1955#if EV_MULTIPLICITY
1956 EV_P = ev_default_loop_ptr;
1957#endif
1958
1959 postfork = 1; /* must be in line with ev_loop_fork */
1960} 3480}
1961 3481
1962/*****************************************************************************/ 3482/*****************************************************************************/
1963 3483
1964void 3484void
… …
1966{ 3486{
1967 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
1968} 3488}
1969 3489
1970unsigned int 3490unsigned int
1971ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
1972{ 3492{
1973 int pri; 3493 int pri;
1974 unsigned int count = 0; 3494 unsigned int count = 0;
1975 3495
1976 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
1977 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
1978 3498
1979 return count; 3499 return count;
1980} 3500}
1981 3501
1982void noinline 3502ecb_noinline
3503void
1983ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
1984{ 3505{
1985 int pri; 3506 pendingpri = NUMPRI;
1986 3507
1987 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
1988 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
1989 { 3514 {
1990 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1991 3516
1992 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1993 /* ^ this is no longer true, as pending_w could be here */
1994
1995 p->w->pending = 0; 3517 p->w->pending = 0;
1996 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
1997 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
1998 } 3520 }
3521 }
3522 while (pendingpri);
1999} 3523}
2000 3524
2001#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2002/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2003/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2004inline_size void 3528inline_size void
2005idle_reify (EV_P) 3529idle_reify (EV_P)
2006{ 3530{
2007 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2008 { 3532 {
2009 int pri; 3533 int pri;
2010 3534
2011 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2012 { 3536 {
… …
2042 { 3566 {
2043 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2044 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2045 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2046 3570
2047 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.)));
2048 3572
2049 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2050 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2051 } 3575 }
2052 else 3576 else
… …
2055 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2056 feed_reverse (EV_A_ (W)w); 3580 feed_reverse (EV_A_ (W)w);
2057 } 3581 }
2058 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3582 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2059 3583
2060 feed_reverse_done (EV_A_ EV_TIMEOUT); 3584 feed_reverse_done (EV_A_ EV_TIMER);
2061 } 3585 }
2062} 3586}
2063 3587
2064#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
2065/* make periodics pending */ 3615/* make periodics pending */
2066inline_size void 3616inline_size void
2067periodics_reify (EV_P) 3617periodics_reify (EV_P)
2068{ 3618{
2069 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2070 3620
2071 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2072 { 3622 {
2073 int feed_count = 0;
2074
2075 do 3623 do
2076 { 3624 {
2077 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2078 3626
2079 /*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)));*/
… …
2088 ANHE_at_cache (periodics [HEAP0]); 3636 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0); 3637 downheap (periodics, periodiccnt, HEAP0);
2090 } 3638 }
2091 else if (w->interval) 3639 else if (w->interval)
2092 { 3640 {
2093 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3641 periodic_recalc (EV_A_ w);
2094 /* if next trigger time is not sufficiently in the future, put it there */
2095 /* this might happen because of floating point inexactness */
2096 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2097 {
2098 ev_at (w) += w->interval;
2099
2100 /* if interval is unreasonably low we might still have a time in the past */
2101 /* so correct this. this will make the periodic very inexact, but the user */
2102 /* has effectively asked to get triggered more often than possible */
2103 if (ev_at (w) < ev_rt_now)
2104 ev_at (w) = ev_rt_now;
2105 }
2106
2107 ANHE_at_cache (periodics [HEAP0]); 3642 ANHE_at_cache (periodics [HEAP0]);
2108 downheap (periodics, periodiccnt, HEAP0); 3643 downheap (periodics, periodiccnt, HEAP0);
2109 } 3644 }
2110 else 3645 else
2111 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3646 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2118 feed_reverse_done (EV_A_ EV_PERIODIC); 3653 feed_reverse_done (EV_A_ EV_PERIODIC);
2119 } 3654 }
2120} 3655}
2121 3656
2122/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2123/* 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? */
2124static void noinline 3659ecb_noinline ecb_cold
3660static void
2125periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2126{ 3662{
2127 int i; 3663 int i;
2128 3664
2129 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2132 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3668 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2133 3669
2134 if (w->reschedule_cb) 3670 if (w->reschedule_cb)
2135 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3671 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2136 else if (w->interval) 3672 else if (w->interval)
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3673 periodic_recalc (EV_A_ w);
2138 3674
2139 ANHE_at_cache (periodics [i]); 3675 ANHE_at_cache (periodics [i]);
2140 } 3676 }
2141 3677
2142 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2143} 3679}
2144#endif 3680#endif
2145 3681
2146/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2147static void noinline 3683ecb_noinline ecb_cold
3684static void
2148timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2149{ 3686{
2150 int i; 3687 int i;
2151 3688
2152 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2156 ANHE_at_cache (*he); 3693 ANHE_at_cache (*he);
2157 } 3694 }
2158} 3695}
2159 3696
2160/* fetch new monotonic and realtime times from the kernel */ 3697/* fetch new monotonic and realtime times from the kernel */
2161/* also detetc if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2162inline_speed void 3699inline_speed void
2163time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2164{ 3701{
2165#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2166 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2167 { 3704 {
2168 int i; 3705 int i;
2169 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2170 3707
2171 mn_now = get_clock (); 3708 mn_now = get_clock ();
2172 3709
2173 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2174 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2175 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)))
2176 { 3713 {
2177 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2178 return; 3715 return;
2179 } 3716 }
2180 3717
… …
2189 * 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
2190 * in the unlikely event of having been preempted here. 3727 * in the unlikely event of having been preempted here.
2191 */ 3728 */
2192 for (i = 4; --i; ) 3729 for (i = 4; --i; )
2193 { 3730 {
3731 ev_tstamp diff;
2194 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2195 3733
2196 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)))
2197 return; /* all is well */ 3737 return; /* all is well */
2198 3738
2199 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2200 mn_now = get_clock (); 3740 mn_now = get_clock ();
2201 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2210 else 3750 else
2211#endif 3751#endif
2212 { 3752 {
2213 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2214 3754
2215 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)))
2216 { 3756 {
2217 /* 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 */
2218 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2219#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2220 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2223 3763
2224 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2225 } 3765 }
2226} 3766}
2227 3767
2228void 3768int
2229ev_loop (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2230{ 3770{
2231#if EV_MINIMAL < 2 3771#if EV_FEATURE_API
2232 ++loop_depth; 3772 ++loop_depth;
2233#endif 3773#endif
2234 3774
2235 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));
2236 3776
2237 loop_done = EVUNLOOP_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2238 3778
2239 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 */
2240 3780
2241 do 3781 do
2242 { 3782 {
2243#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2244 ev_loop_verify (EV_A); 3784 ev_verify (EV_A);
2245#endif 3785#endif
2246 3786
2247#ifndef _WIN32 3787#ifndef _WIN32
2248 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2249 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2250 { 3790 {
2251 curpid = getpid (); 3791 curpid = getpid ();
2252 postfork = 1; 3792 postfork = 1;
2253 } 3793 }
2254#endif 3794#endif
2255 3795
2256#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2257 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2258 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2259 if (forkcnt) 3799 if (forkcnt)
2260 { 3800 {
2261 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2262 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2263 } 3803 }
2264#endif 3804#endif
2265 3805
3806#if EV_PREPARE_ENABLE
2266 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2267 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2268 { 3809 {
2269 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2270 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2271 } 3812 }
3813#endif
2272 3814
2273 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2274 break; 3816 break;
2275 3817
2276 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2277 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2278 loop_fork (EV_A); 3820 loop_fork (EV_A);
2279 3821
2280 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2281 fd_reify (EV_A); 3823 fd_reify (EV_A);
2282 3824
2283 /* calculate blocking time */ 3825 /* calculate blocking time */
2284 { 3826 {
2285 ev_tstamp waittime = 0.; 3827 ev_tstamp waittime = 0.;
2286 ev_tstamp sleeptime = 0.; 3828 ev_tstamp sleeptime = 0.;
2287 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
2288 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2289 { 3842 {
2290 /* remember old timestamp for io_blocktime calculation */
2291 ev_tstamp prev_mn_now = mn_now;
2292
2293 /* update time to cancel out callback processing overhead */
2294 time_update (EV_A_ 1e100);
2295
2296 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2297 3844
2298 if (timercnt) 3845 if (timercnt)
2299 { 3846 {
2300 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2301 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
2302 } 3849 }
2303 3850
2304#if EV_PERIODIC_ENABLE 3851#if EV_PERIODIC_ENABLE
2305 if (periodiccnt) 3852 if (periodiccnt)
2306 { 3853 {
2307 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3854 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2308 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2309 } 3856 }
2310#endif 3857#endif
2311 3858
2312 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2313 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2314 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2315 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 wait 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
2316 /* extra check because io_blocktime is commonly 0 */ 3873 /* extra check because io_blocktime is commonly 0 */
2317 if (expect_false (io_blocktime)) 3874 if (ecb_expect_false (io_blocktime))
2318 { 3875 {
2319 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3876 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2320 3877
2321 if (sleeptime > waittime - backend_fudge) 3878 if (sleeptime > waittime - backend_mintime)
2322 sleeptime = waittime - backend_fudge; 3879 sleeptime = waittime - backend_mintime;
2323 3880
2324 if (expect_true (sleeptime > 0.)) 3881 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2325 { 3882 {
2326 ev_sleep (sleeptime); 3883 ev_sleep (sleeptime);
2327 waittime -= sleeptime; 3884 waittime -= sleeptime;
2328 } 3885 }
2329 } 3886 }
2330 } 3887 }
2331 3888
2332#if EV_MINIMAL < 2 3889#if EV_FEATURE_API
2333 ++loop_count; 3890 ++loop_count;
2334#endif 3891#endif
2335 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3892 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2336 backend_poll (EV_A_ waittime); 3893 backend_poll (EV_A_ waittime);
2337 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 }
2338 3904
2339 /* update ev_rt_now, do magic */ 3905 /* update ev_rt_now, do magic */
2340 time_update (EV_A_ waittime + sleeptime); 3906 time_update (EV_A_ waittime + sleeptime);
2341 } 3907 }
2342 3908
… …
2349#if EV_IDLE_ENABLE 3915#if EV_IDLE_ENABLE
2350 /* queue idle watchers unless other events are pending */ 3916 /* queue idle watchers unless other events are pending */
2351 idle_reify (EV_A); 3917 idle_reify (EV_A);
2352#endif 3918#endif
2353 3919
3920#if EV_CHECK_ENABLE
2354 /* queue check watchers, to be executed first */ 3921 /* queue check watchers, to be executed first */
2355 if (expect_false (checkcnt)) 3922 if (ecb_expect_false (checkcnt))
2356 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3923 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3924#endif
2357 3925
2358 EV_INVOKE_PENDING; 3926 EV_INVOKE_PENDING;
2359 } 3927 }
2360 while (expect_true ( 3928 while (ecb_expect_true (
2361 activecnt 3929 activecnt
2362 && !loop_done 3930 && !loop_done
2363 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3931 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2364 )); 3932 ));
2365 3933
2366 if (loop_done == EVUNLOOP_ONE) 3934 if (loop_done == EVBREAK_ONE)
2367 loop_done = EVUNLOOP_CANCEL; 3935 loop_done = EVBREAK_CANCEL;
2368 3936
2369#if EV_MINIMAL < 2 3937#if EV_FEATURE_API
2370 --loop_depth; 3938 --loop_depth;
2371#endif 3939#endif
2372}
2373 3940
3941 return activecnt;
3942}
3943
2374void 3944void
2375ev_unloop (EV_P_ int how) 3945ev_break (EV_P_ int how) EV_NOEXCEPT
2376{ 3946{
2377 loop_done = how; 3947 loop_done = how;
2378} 3948}
2379 3949
2380void 3950void
2381ev_ref (EV_P) 3951ev_ref (EV_P) EV_NOEXCEPT
2382{ 3952{
2383 ++activecnt; 3953 ++activecnt;
2384} 3954}
2385 3955
2386void 3956void
2387ev_unref (EV_P) 3957ev_unref (EV_P) EV_NOEXCEPT
2388{ 3958{
2389 --activecnt; 3959 --activecnt;
2390} 3960}
2391 3961
2392void 3962void
2393ev_now_update (EV_P) 3963ev_now_update (EV_P) EV_NOEXCEPT
2394{ 3964{
2395 time_update (EV_A_ 1e100); 3965 time_update (EV_A_ EV_TSTAMP_HUGE);
2396} 3966}
2397 3967
2398void 3968void
2399ev_suspend (EV_P) 3969ev_suspend (EV_P) EV_NOEXCEPT
2400{ 3970{
2401 ev_now_update (EV_A); 3971 ev_now_update (EV_A);
2402} 3972}
2403 3973
2404void 3974void
2405ev_resume (EV_P) 3975ev_resume (EV_P) EV_NOEXCEPT
2406{ 3976{
2407 ev_tstamp mn_prev = mn_now; 3977 ev_tstamp mn_prev = mn_now;
2408 3978
2409 ev_now_update (EV_A); 3979 ev_now_update (EV_A);
2410 timers_reschedule (EV_A_ mn_now - mn_prev); 3980 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2427inline_size void 3997inline_size void
2428wlist_del (WL *head, WL elem) 3998wlist_del (WL *head, WL elem)
2429{ 3999{
2430 while (*head) 4000 while (*head)
2431 { 4001 {
2432 if (expect_true (*head == elem)) 4002 if (ecb_expect_true (*head == elem))
2433 { 4003 {
2434 *head = elem->next; 4004 *head = elem->next;
2435 break; 4005 break;
2436 } 4006 }
2437 4007
… …
2449 w->pending = 0; 4019 w->pending = 0;
2450 } 4020 }
2451} 4021}
2452 4022
2453int 4023int
2454ev_clear_pending (EV_P_ void *w) 4024ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2455{ 4025{
2456 W w_ = (W)w; 4026 W w_ = (W)w;
2457 int pending = w_->pending; 4027 int pending = w_->pending;
2458 4028
2459 if (expect_true (pending)) 4029 if (ecb_expect_true (pending))
2460 { 4030 {
2461 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4031 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2462 p->w = (W)&pending_w; 4032 p->w = (W)&pending_w;
2463 w_->pending = 0; 4033 w_->pending = 0;
2464 return p->events; 4034 return p->events;
… …
2491 w->active = 0; 4061 w->active = 0;
2492} 4062}
2493 4063
2494/*****************************************************************************/ 4064/*****************************************************************************/
2495 4065
2496void noinline 4066ecb_noinline
4067void
2497ev_io_start (EV_P_ ev_io *w) 4068ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2498{ 4069{
2499 int fd = w->fd; 4070 int fd = w->fd;
2500 4071
2501 if (expect_false (ev_is_active (w))) 4072 if (ecb_expect_false (ev_is_active (w)))
2502 return; 4073 return;
2503 4074
2504 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4075 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2505 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))));
2506 4077
4078#if EV_VERIFY >= 2
4079 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4080#endif
2507 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2508 4082
2509 ev_start (EV_A_ (W)w, 1); 4083 ev_start (EV_A_ (W)w, 1);
2510 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4084 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2511 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));
2512 4089
2513 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);
2514 w->events &= ~EV__IOFDSET; 4091 w->events &= ~EV__IOFDSET;
2515 4092
2516 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
2517} 4094}
2518 4095
2519void noinline 4096ecb_noinline
4097void
2520ev_io_stop (EV_P_ ev_io *w) 4098ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2521{ 4099{
2522 clear_pending (EV_A_ (W)w); 4100 clear_pending (EV_A_ (W)w);
2523 if (expect_false (!ev_is_active (w))) 4101 if (ecb_expect_false (!ev_is_active (w)))
2524 return; 4102 return;
2525 4103
2526 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));
2527 4105
4106#if EV_VERIFY >= 2
4107 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4108#endif
2528 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
2529 4110
2530 wlist_del (&anfds[w->fd].head, (WL)w); 4111 wlist_del (&anfds[w->fd].head, (WL)w);
2531 ev_stop (EV_A_ (W)w); 4112 ev_stop (EV_A_ (W)w);
2532 4113
2533 fd_change (EV_A_ w->fd, 1); 4114 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2534 4115
2535 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
2536} 4117}
2537 4118
2538void noinline 4119ecb_noinline
4120void
2539ev_timer_start (EV_P_ ev_timer *w) 4121ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2540{ 4122{
2541 if (expect_false (ev_is_active (w))) 4123 if (ecb_expect_false (ev_is_active (w)))
2542 return; 4124 return;
2543 4125
2544 ev_at (w) += mn_now; 4126 ev_at (w) += mn_now;
2545 4127
2546 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.));
2547 4129
2548 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2549 4131
2550 ++timercnt; 4132 ++timercnt;
2551 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4133 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2552 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4134 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2553 ANHE_w (timers [ev_active (w)]) = (WT)w; 4135 ANHE_w (timers [ev_active (w)]) = (WT)w;
2554 ANHE_at_cache (timers [ev_active (w)]); 4136 ANHE_at_cache (timers [ev_active (w)]);
2555 upheap (timers, ev_active (w)); 4137 upheap (timers, ev_active (w));
2556 4138
2557 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2558 4140
2559 /*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));*/
2560} 4142}
2561 4143
2562void noinline 4144ecb_noinline
4145void
2563ev_timer_stop (EV_P_ ev_timer *w) 4146ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2564{ 4147{
2565 clear_pending (EV_A_ (W)w); 4148 clear_pending (EV_A_ (W)w);
2566 if (expect_false (!ev_is_active (w))) 4149 if (ecb_expect_false (!ev_is_active (w)))
2567 return; 4150 return;
2568 4151
2569 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
2570 4153
2571 { 4154 {
… …
2573 4156
2574 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));
2575 4158
2576 --timercnt; 4159 --timercnt;
2577 4160
2578 if (expect_true (active < timercnt + HEAP0)) 4161 if (ecb_expect_true (active < timercnt + HEAP0))
2579 { 4162 {
2580 timers [active] = timers [timercnt + HEAP0]; 4163 timers [active] = timers [timercnt + HEAP0];
2581 adjustheap (timers, timercnt, active); 4164 adjustheap (timers, timercnt, active);
2582 } 4165 }
2583 } 4166 }
2584 4167
2585 EV_FREQUENT_CHECK;
2586
2587 ev_at (w) -= mn_now; 4168 ev_at (w) -= mn_now;
2588 4169
2589 ev_stop (EV_A_ (W)w); 4170 ev_stop (EV_A_ (W)w);
2590}
2591 4171
2592void noinline 4172 EV_FREQUENT_CHECK;
4173}
4174
4175ecb_noinline
4176void
2593ev_timer_again (EV_P_ ev_timer *w) 4177ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2594{ 4178{
2595 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
4180
4181 clear_pending (EV_A_ (W)w);
2596 4182
2597 if (ev_is_active (w)) 4183 if (ev_is_active (w))
2598 { 4184 {
2599 if (w->repeat) 4185 if (w->repeat)
2600 { 4186 {
… …
2613 4199
2614 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2615} 4201}
2616 4202
2617ev_tstamp 4203ev_tstamp
2618ev_timer_remaining (EV_P_ ev_timer *w) 4204ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2619{ 4205{
2620 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.));
2621} 4207}
2622 4208
2623#if EV_PERIODIC_ENABLE 4209#if EV_PERIODIC_ENABLE
2624void noinline 4210ecb_noinline
4211void
2625ev_periodic_start (EV_P_ ev_periodic *w) 4212ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2626{ 4213{
2627 if (expect_false (ev_is_active (w))) 4214 if (ecb_expect_false (ev_is_active (w)))
2628 return; 4215 return;
2629 4216
2630 if (w->reschedule_cb) 4217 if (w->reschedule_cb)
2631 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4218 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2632 else if (w->interval) 4219 else if (w->interval)
2633 { 4220 {
2634 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.));
2635 /* this formula differs from the one in periodic_reify because we do not always round up */ 4222 periodic_recalc (EV_A_ w);
2636 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2637 } 4223 }
2638 else 4224 else
2639 ev_at (w) = w->offset; 4225 ev_at (w) = w->offset;
2640 4226
2641 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2642 4228
2643 ++periodiccnt; 4229 ++periodiccnt;
2644 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4230 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2645 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4231 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2646 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4232 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2647 ANHE_at_cache (periodics [ev_active (w)]); 4233 ANHE_at_cache (periodics [ev_active (w)]);
2648 upheap (periodics, ev_active (w)); 4234 upheap (periodics, ev_active (w));
2649 4235
2650 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
2651 4237
2652 /*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));*/
2653} 4239}
2654 4240
2655void noinline 4241ecb_noinline
4242void
2656ev_periodic_stop (EV_P_ ev_periodic *w) 4243ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2657{ 4244{
2658 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
2659 if (expect_false (!ev_is_active (w))) 4246 if (ecb_expect_false (!ev_is_active (w)))
2660 return; 4247 return;
2661 4248
2662 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2663 4250
2664 { 4251 {
… …
2666 4253
2667 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));
2668 4255
2669 --periodiccnt; 4256 --periodiccnt;
2670 4257
2671 if (expect_true (active < periodiccnt + HEAP0)) 4258 if (ecb_expect_true (active < periodiccnt + HEAP0))
2672 { 4259 {
2673 periodics [active] = periodics [periodiccnt + HEAP0]; 4260 periodics [active] = periodics [periodiccnt + HEAP0];
2674 adjustheap (periodics, periodiccnt, active); 4261 adjustheap (periodics, periodiccnt, active);
2675 } 4262 }
2676 } 4263 }
2677 4264
2678 EV_FREQUENT_CHECK;
2679
2680 ev_stop (EV_A_ (W)w); 4265 ev_stop (EV_A_ (W)w);
2681}
2682 4266
2683void noinline 4267 EV_FREQUENT_CHECK;
4268}
4269
4270ecb_noinline
4271void
2684ev_periodic_again (EV_P_ ev_periodic *w) 4272ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2685{ 4273{
2686 /* TODO: use adjustheap and recalculation */ 4274 /* TODO: use adjustheap and recalculation */
2687 ev_periodic_stop (EV_A_ w); 4275 ev_periodic_stop (EV_A_ w);
2688 ev_periodic_start (EV_A_ w); 4276 ev_periodic_start (EV_A_ w);
2689} 4277}
… …
2691 4279
2692#ifndef SA_RESTART 4280#ifndef SA_RESTART
2693# define SA_RESTART 0 4281# define SA_RESTART 0
2694#endif 4282#endif
2695 4283
2696void noinline 4284#if EV_SIGNAL_ENABLE
4285
4286ecb_noinline
4287void
2697ev_signal_start (EV_P_ ev_signal *w) 4288ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2698{ 4289{
2699 if (expect_false (ev_is_active (w))) 4290 if (ecb_expect_false (ev_is_active (w)))
2700 return; 4291 return;
2701 4292
2702 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4293 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2703 4294
2704#if EV_MULTIPLICITY 4295#if EV_MULTIPLICITY
2705 assert (("libev: a signal must not be attached to two different loops", 4296 assert (("libev: a signal must not be attached to two different loops",
2706 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4297 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2707 4298
2708 signals [w->signum - 1].loop = EV_A; 4299 signals [w->signum - 1].loop = EV_A;
4300 ECB_MEMORY_FENCE_RELEASE;
2709#endif 4301#endif
2710 4302
2711 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
2712 4304
2713#if EV_USE_SIGNALFD 4305#if EV_USE_SIGNALFD
… …
2746 if (!((WL)w)->next) 4338 if (!((WL)w)->next)
2747# if EV_USE_SIGNALFD 4339# if EV_USE_SIGNALFD
2748 if (sigfd < 0) /*TODO*/ 4340 if (sigfd < 0) /*TODO*/
2749# endif 4341# endif
2750 { 4342 {
2751# if _WIN32 4343# ifdef _WIN32
2752 evpipe_init (EV_A); 4344 evpipe_init (EV_A);
2753 4345
2754 signal (w->signum, ev_sighandler); 4346 signal (w->signum, ev_sighandler);
2755# else 4347# else
2756 struct sigaction sa; 4348 struct sigaction sa;
… …
2760 sa.sa_handler = ev_sighandler; 4352 sa.sa_handler = ev_sighandler;
2761 sigfillset (&sa.sa_mask); 4353 sigfillset (&sa.sa_mask);
2762 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 */
2763 sigaction (w->signum, &sa, 0); 4355 sigaction (w->signum, &sa, 0);
2764 4356
4357 if (origflags & EVFLAG_NOSIGMASK)
4358 {
2765 sigemptyset (&sa.sa_mask); 4359 sigemptyset (&sa.sa_mask);
2766 sigaddset (&sa.sa_mask, w->signum); 4360 sigaddset (&sa.sa_mask, w->signum);
2767 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4361 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4362 }
2768#endif 4363#endif
2769 } 4364 }
2770 4365
2771 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
2772} 4367}
2773 4368
2774void noinline 4369ecb_noinline
4370void
2775ev_signal_stop (EV_P_ ev_signal *w) 4371ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2776{ 4372{
2777 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
2778 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
2779 return; 4375 return;
2780 4376
2781 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2782 4378
2783 wlist_del (&signals [w->signum - 1].head, (WL)w); 4379 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2789 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4385 signals [w->signum - 1].loop = 0; /* unattach from signal */
2790#endif 4386#endif
2791#if EV_USE_SIGNALFD 4387#if EV_USE_SIGNALFD
2792 if (sigfd >= 0) 4388 if (sigfd >= 0)
2793 { 4389 {
2794 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4390 sigset_t ss;
4391
4392 sigemptyset (&ss);
4393 sigaddset (&ss, w->signum);
2795 sigdelset (&sigfd_set, w->signum); 4394 sigdelset (&sigfd_set, w->signum);
4395
2796 signalfd (sigfd, &sigfd_set, 0); 4396 signalfd (sigfd, &sigfd_set, 0);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4397 sigprocmask (SIG_UNBLOCK, &ss, 0);
2798 /*TODO: maybe unblock signal? */
2799 } 4398 }
2800 else 4399 else
2801#endif 4400#endif
2802 signal (w->signum, SIG_DFL); 4401 signal (w->signum, SIG_DFL);
2803 } 4402 }
2804 4403
2805 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
2806} 4405}
2807 4406
4407#endif
4408
4409#if EV_CHILD_ENABLE
4410
2808void 4411void
2809ev_child_start (EV_P_ ev_child *w) 4412ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2810{ 4413{
2811#if EV_MULTIPLICITY 4414#if EV_MULTIPLICITY
2812 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));
2813#endif 4416#endif
2814 if (expect_false (ev_is_active (w))) 4417 if (ecb_expect_false (ev_is_active (w)))
2815 return; 4418 return;
2816 4419
2817 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2818 4421
2819 ev_start (EV_A_ (W)w, 1); 4422 ev_start (EV_A_ (W)w, 1);
2820 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4423 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2821 4424
2822 EV_FREQUENT_CHECK; 4425 EV_FREQUENT_CHECK;
2823} 4426}
2824 4427
2825void 4428void
2826ev_child_stop (EV_P_ ev_child *w) 4429ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2827{ 4430{
2828 clear_pending (EV_A_ (W)w); 4431 clear_pending (EV_A_ (W)w);
2829 if (expect_false (!ev_is_active (w))) 4432 if (ecb_expect_false (!ev_is_active (w)))
2830 return; 4433 return;
2831 4434
2832 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
2833 4436
2834 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4437 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2835 ev_stop (EV_A_ (W)w); 4438 ev_stop (EV_A_ (W)w);
2836 4439
2837 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
2838} 4441}
4442
4443#endif
2839 4444
2840#if EV_STAT_ENABLE 4445#if EV_STAT_ENABLE
2841 4446
2842# ifdef _WIN32 4447# ifdef _WIN32
2843# undef lstat 4448# undef lstat
… …
2846 4451
2847#define DEF_STAT_INTERVAL 5.0074891 4452#define DEF_STAT_INTERVAL 5.0074891
2848#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4453#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2849#define MIN_STAT_INTERVAL 0.1074891 4454#define MIN_STAT_INTERVAL 0.1074891
2850 4455
2851static 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);
2852 4457
2853#if EV_USE_INOTIFY 4458#if EV_USE_INOTIFY
2854# define EV_INOTIFY_BUFSIZE 8192
2855 4459
2856static 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
2857infy_add (EV_P_ ev_stat *w) 4465infy_add (EV_P_ ev_stat *w)
2858{ 4466{
2859 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);
2860 4471
2861 if (w->wd >= 0) 4472 if (w->wd >= 0)
2862 { 4473 {
2863 struct statfs sfs; 4474 struct statfs sfs;
2864 4475
… …
2868 4479
2869 if (!fs_2625) 4480 if (!fs_2625)
2870 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4481 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2871 else if (!statfs (w->path, &sfs) 4482 else if (!statfs (w->path, &sfs)
2872 && (sfs.f_type == 0x1373 /* devfs */ 4483 && (sfs.f_type == 0x1373 /* devfs */
4484 || sfs.f_type == 0x4006 /* fat */
4485 || sfs.f_type == 0x4d44 /* msdos */
2873 || sfs.f_type == 0xEF53 /* ext2/3 */ 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 */
2874 || sfs.f_type == 0x3153464a /* jfs */ 4490 || sfs.f_type == 0x3153464a /* jfs */
4491 || sfs.f_type == 0x9123683e /* btrfs */
2875 || sfs.f_type == 0x52654973 /* reiser3 */ 4492 || sfs.f_type == 0x52654973 /* reiser3 */
2876 || sfs.f_type == 0x01021994 /* tempfs */ 4493 || sfs.f_type == 0x01021994 /* tmpfs */
2877 || sfs.f_type == 0x58465342 /* xfs */)) 4494 || sfs.f_type == 0x58465342 /* xfs */))
2878 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4495 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2879 else 4496 else
2880 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4497 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2881 } 4498 }
… …
2902 if (!pend || pend == path) 4519 if (!pend || pend == path)
2903 break; 4520 break;
2904 4521
2905 *pend = 0; 4522 *pend = 0;
2906 w->wd = inotify_add_watch (fs_fd, path, mask); 4523 w->wd = inotify_add_watch (fs_fd, path, mask);
2907 } 4524 }
2908 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4525 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2909 } 4526 }
2910 } 4527 }
2911 4528
2912 if (w->wd >= 0) 4529 if (w->wd >= 0)
2913 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);
2914 4531
2915 /* now re-arm timer, if required */ 4532 /* now re-arm timer, if required */
2916 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4533 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2917 ev_timer_again (EV_A_ &w->timer); 4534 ev_timer_again (EV_A_ &w->timer);
2918 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4535 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2919} 4536}
2920 4537
2921static void noinline 4538ecb_noinline
4539static void
2922infy_del (EV_P_ ev_stat *w) 4540infy_del (EV_P_ ev_stat *w)
2923{ 4541{
2924 int slot; 4542 int slot;
2925 int wd = w->wd; 4543 int wd = w->wd;
2926 4544
2927 if (wd < 0) 4545 if (wd < 0)
2928 return; 4546 return;
2929 4547
2930 w->wd = -2; 4548 w->wd = -2;
2931 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4549 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2932 wlist_del (&fs_hash [slot].head, (WL)w); 4550 wlist_del (&fs_hash [slot].head, (WL)w);
2933 4551
2934 /* remove this watcher, if others are watching it, they will rearm */ 4552 /* remove this watcher, if others are watching it, they will rearm */
2935 inotify_rm_watch (fs_fd, wd); 4553 inotify_rm_watch (fs_fd, wd);
2936} 4554}
2937 4555
2938static void noinline 4556ecb_noinline
4557static void
2939infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4558infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2940{ 4559{
2941 if (slot < 0) 4560 if (slot < 0)
2942 /* overflow, need to check for all hash slots */ 4561 /* overflow, need to check for all hash slots */
2943 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4562 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2944 infy_wd (EV_A_ slot, wd, ev); 4563 infy_wd (EV_A_ slot, wd, ev);
2945 else 4564 else
2946 { 4565 {
2947 WL w_; 4566 WL w_;
2948 4567
2949 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4568 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2950 { 4569 {
2951 ev_stat *w = (ev_stat *)w_; 4570 ev_stat *w = (ev_stat *)w_;
2952 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 */
2953 4572
2954 if (w->wd == wd || wd == -1) 4573 if (w->wd == wd || wd == -1)
2955 { 4574 {
2956 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4575 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2957 { 4576 {
2958 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);
2959 w->wd = -1; 4578 w->wd = -1;
2960 infy_add (EV_A_ w); /* re-add, no matter what */ 4579 infy_add (EV_A_ w); /* re-add, no matter what */
2961 } 4580 }
2962 4581
2963 stat_timer_cb (EV_A_ &w->timer, 0); 4582 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2968 4587
2969static void 4588static void
2970infy_cb (EV_P_ ev_io *w, int revents) 4589infy_cb (EV_P_ ev_io *w, int revents)
2971{ 4590{
2972 char buf [EV_INOTIFY_BUFSIZE]; 4591 char buf [EV_INOTIFY_BUFSIZE];
2973 struct inotify_event *ev = (struct inotify_event *)buf;
2974 int ofs; 4592 int ofs;
2975 int len = read (fs_fd, buf, sizeof (buf)); 4593 int len = read (fs_fd, buf, sizeof (buf));
2976 4594
2977 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);
2978 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 }
2979} 4601}
2980 4602
2981inline_size void 4603inline_size ecb_cold
4604void
2982check_2625 (EV_P) 4605ev_check_2625 (EV_P)
2983{ 4606{
2984 /* kernels < 2.6.25 are borked 4607 /* kernels < 2.6.25 are borked
2985 * 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
2986 */ 4609 */
2987 struct utsname buf; 4610 if (ev_linux_version () < 0x020619)
2988 int major, minor, micro;
2989
2990 if (uname (&buf))
2991 return;
2992
2993 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2994 return;
2995
2996 if (major < 2
2997 || (major == 2 && minor < 6)
2998 || (major == 2 && minor == 6 && micro < 25))
2999 return; 4611 return;
3000 4612
3001 fs_2625 = 1; 4613 fs_2625 = 1;
3002} 4614}
3003 4615
3004inline_size int 4616inline_size int
3005infy_newfd (void) 4617infy_newfd (void)
3006{ 4618{
3007#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4619#if defined IN_CLOEXEC && defined IN_NONBLOCK
3008 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4620 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3009 if (fd >= 0) 4621 if (fd >= 0)
3010 return fd; 4622 return fd;
3011#endif 4623#endif
3012 return inotify_init (); 4624 return inotify_init ();
… …
3018 if (fs_fd != -2) 4630 if (fs_fd != -2)
3019 return; 4631 return;
3020 4632
3021 fs_fd = -1; 4633 fs_fd = -1;
3022 4634
3023 check_2625 (EV_A); 4635 ev_check_2625 (EV_A);
3024 4636
3025 fs_fd = infy_newfd (); 4637 fs_fd = infy_newfd ();
3026 4638
3027 if (fs_fd >= 0) 4639 if (fs_fd >= 0)
3028 { 4640 {
… …
3053 ev_io_set (&fs_w, fs_fd, EV_READ); 4665 ev_io_set (&fs_w, fs_fd, EV_READ);
3054 ev_io_start (EV_A_ &fs_w); 4666 ev_io_start (EV_A_ &fs_w);
3055 ev_unref (EV_A); 4667 ev_unref (EV_A);
3056 } 4668 }
3057 4669
3058 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4670 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3059 { 4671 {
3060 WL w_ = fs_hash [slot].head; 4672 WL w_ = fs_hash [slot].head;
3061 fs_hash [slot].head = 0; 4673 fs_hash [slot].head = 0;
3062 4674
3063 while (w_) 4675 while (w_)
… …
3087#else 4699#else
3088# define EV_LSTAT(p,b) lstat (p, b) 4700# define EV_LSTAT(p,b) lstat (p, b)
3089#endif 4701#endif
3090 4702
3091void 4703void
3092ev_stat_stat (EV_P_ ev_stat *w) 4704ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3093{ 4705{
3094 if (lstat (w->path, &w->attr) < 0) 4706 if (lstat (w->path, &w->attr) < 0)
3095 w->attr.st_nlink = 0; 4707 w->attr.st_nlink = 0;
3096 else if (!w->attr.st_nlink) 4708 else if (!w->attr.st_nlink)
3097 w->attr.st_nlink = 1; 4709 w->attr.st_nlink = 1;
3098} 4710}
3099 4711
3100static void noinline 4712ecb_noinline
4713static void
3101stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4714stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3102{ 4715{
3103 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4716 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3104 4717
3105 /* we copy this here each the time so that */ 4718 ev_statdata prev = w->attr;
3106 /* prev has the old value when the callback gets invoked */
3107 w->prev = w->attr;
3108 ev_stat_stat (EV_A_ w); 4719 ev_stat_stat (EV_A_ w);
3109 4720
3110 /* 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 */
3111 if ( 4722 if (
3112 w->prev.st_dev != w->attr.st_dev 4723 prev.st_dev != w->attr.st_dev
3113 || w->prev.st_ino != w->attr.st_ino 4724 || prev.st_ino != w->attr.st_ino
3114 || w->prev.st_mode != w->attr.st_mode 4725 || prev.st_mode != w->attr.st_mode
3115 || w->prev.st_nlink != w->attr.st_nlink 4726 || prev.st_nlink != w->attr.st_nlink
3116 || w->prev.st_uid != w->attr.st_uid 4727 || prev.st_uid != w->attr.st_uid
3117 || w->prev.st_gid != w->attr.st_gid 4728 || prev.st_gid != w->attr.st_gid
3118 || w->prev.st_rdev != w->attr.st_rdev 4729 || prev.st_rdev != w->attr.st_rdev
3119 || w->prev.st_size != w->attr.st_size 4730 || prev.st_size != w->attr.st_size
3120 || w->prev.st_atime != w->attr.st_atime 4731 || prev.st_atime != w->attr.st_atime
3121 || w->prev.st_mtime != w->attr.st_mtime 4732 || prev.st_mtime != w->attr.st_mtime
3122 || w->prev.st_ctime != w->attr.st_ctime 4733 || prev.st_ctime != w->attr.st_ctime
3123 ) { 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
3124 #if EV_USE_INOTIFY 4740 #if EV_USE_INOTIFY
3125 if (fs_fd >= 0) 4741 if (fs_fd >= 0)
3126 { 4742 {
3127 infy_del (EV_A_ w); 4743 infy_del (EV_A_ w);
3128 infy_add (EV_A_ w); 4744 infy_add (EV_A_ w);
… …
3133 ev_feed_event (EV_A_ w, EV_STAT); 4749 ev_feed_event (EV_A_ w, EV_STAT);
3134 } 4750 }
3135} 4751}
3136 4752
3137void 4753void
3138ev_stat_start (EV_P_ ev_stat *w) 4754ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3139{ 4755{
3140 if (expect_false (ev_is_active (w))) 4756 if (ecb_expect_false (ev_is_active (w)))
3141 return; 4757 return;
3142 4758
3143 ev_stat_stat (EV_A_ w); 4759 ev_stat_stat (EV_A_ w);
3144 4760
3145 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4761 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3164 4780
3165 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
3166} 4782}
3167 4783
3168void 4784void
3169ev_stat_stop (EV_P_ ev_stat *w) 4785ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3170{ 4786{
3171 clear_pending (EV_A_ (W)w); 4787 clear_pending (EV_A_ (W)w);
3172 if (expect_false (!ev_is_active (w))) 4788 if (ecb_expect_false (!ev_is_active (w)))
3173 return; 4789 return;
3174 4790
3175 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
3176 4792
3177#if EV_USE_INOTIFY 4793#if EV_USE_INOTIFY
… …
3190} 4806}
3191#endif 4807#endif
3192 4808
3193#if EV_IDLE_ENABLE 4809#if EV_IDLE_ENABLE
3194void 4810void
3195ev_idle_start (EV_P_ ev_idle *w) 4811ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3196{ 4812{
3197 if (expect_false (ev_is_active (w))) 4813 if (ecb_expect_false (ev_is_active (w)))
3198 return; 4814 return;
3199 4815
3200 pri_adjust (EV_A_ (W)w); 4816 pri_adjust (EV_A_ (W)w);
3201 4817
3202 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
… …
3205 int active = ++idlecnt [ABSPRI (w)]; 4821 int active = ++idlecnt [ABSPRI (w)];
3206 4822
3207 ++idleall; 4823 ++idleall;
3208 ev_start (EV_A_ (W)w, active); 4824 ev_start (EV_A_ (W)w, active);
3209 4825
3210 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);
3211 idles [ABSPRI (w)][active - 1] = w; 4827 idles [ABSPRI (w)][active - 1] = w;
3212 } 4828 }
3213 4829
3214 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
3215} 4831}
3216 4832
3217void 4833void
3218ev_idle_stop (EV_P_ ev_idle *w) 4834ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3219{ 4835{
3220 clear_pending (EV_A_ (W)w); 4836 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4837 if (ecb_expect_false (!ev_is_active (w)))
3222 return; 4838 return;
3223 4839
3224 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3225 4841
3226 { 4842 {
… …
3235 4851
3236 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3237} 4853}
3238#endif 4854#endif
3239 4855
4856#if EV_PREPARE_ENABLE
3240void 4857void
3241ev_prepare_start (EV_P_ ev_prepare *w) 4858ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3242{ 4859{
3243 if (expect_false (ev_is_active (w))) 4860 if (ecb_expect_false (ev_is_active (w)))
3244 return; 4861 return;
3245 4862
3246 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3247 4864
3248 ev_start (EV_A_ (W)w, ++preparecnt); 4865 ev_start (EV_A_ (W)w, ++preparecnt);
3249 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4866 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3250 prepares [preparecnt - 1] = w; 4867 prepares [preparecnt - 1] = w;
3251 4868
3252 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
3253} 4870}
3254 4871
3255void 4872void
3256ev_prepare_stop (EV_P_ ev_prepare *w) 4873ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3257{ 4874{
3258 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
3259 if (expect_false (!ev_is_active (w))) 4876 if (ecb_expect_false (!ev_is_active (w)))
3260 return; 4877 return;
3261 4878
3262 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3263 4880
3264 { 4881 {
… …
3270 4887
3271 ev_stop (EV_A_ (W)w); 4888 ev_stop (EV_A_ (W)w);
3272 4889
3273 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3274} 4891}
4892#endif
3275 4893
4894#if EV_CHECK_ENABLE
3276void 4895void
3277ev_check_start (EV_P_ ev_check *w) 4896ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3278{ 4897{
3279 if (expect_false (ev_is_active (w))) 4898 if (ecb_expect_false (ev_is_active (w)))
3280 return; 4899 return;
3281 4900
3282 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3283 4902
3284 ev_start (EV_A_ (W)w, ++checkcnt); 4903 ev_start (EV_A_ (W)w, ++checkcnt);
3285 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4904 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3286 checks [checkcnt - 1] = w; 4905 checks [checkcnt - 1] = w;
3287 4906
3288 EV_FREQUENT_CHECK; 4907 EV_FREQUENT_CHECK;
3289} 4908}
3290 4909
3291void 4910void
3292ev_check_stop (EV_P_ ev_check *w) 4911ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3293{ 4912{
3294 clear_pending (EV_A_ (W)w); 4913 clear_pending (EV_A_ (W)w);
3295 if (expect_false (!ev_is_active (w))) 4914 if (ecb_expect_false (!ev_is_active (w)))
3296 return; 4915 return;
3297 4916
3298 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
3299 4918
3300 { 4919 {
… …
3306 4925
3307 ev_stop (EV_A_ (W)w); 4926 ev_stop (EV_A_ (W)w);
3308 4927
3309 EV_FREQUENT_CHECK; 4928 EV_FREQUENT_CHECK;
3310} 4929}
4930#endif
3311 4931
3312#if EV_EMBED_ENABLE 4932#if EV_EMBED_ENABLE
3313void noinline 4933ecb_noinline
4934void
3314ev_embed_sweep (EV_P_ ev_embed *w) 4935ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3315{ 4936{
3316 ev_loop (w->other, EVLOOP_NONBLOCK); 4937 ev_run (w->other, EVRUN_NOWAIT);
3317} 4938}
3318 4939
3319static void 4940static void
3320embed_io_cb (EV_P_ ev_io *io, int revents) 4941embed_io_cb (EV_P_ ev_io *io, int revents)
3321{ 4942{
3322 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4943 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3323 4944
3324 if (ev_cb (w)) 4945 if (ev_cb (w))
3325 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4946 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3326 else 4947 else
3327 ev_loop (w->other, EVLOOP_NONBLOCK); 4948 ev_run (w->other, EVRUN_NOWAIT);
3328} 4949}
3329 4950
3330static void 4951static void
3331embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4952embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3332{ 4953{
… …
3336 EV_P = w->other; 4957 EV_P = w->other;
3337 4958
3338 while (fdchangecnt) 4959 while (fdchangecnt)
3339 { 4960 {
3340 fd_reify (EV_A); 4961 fd_reify (EV_A);
3341 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4962 ev_run (EV_A_ EVRUN_NOWAIT);
3342 } 4963 }
3343 } 4964 }
3344} 4965}
3345 4966
3346static void 4967static void
… …
3352 4973
3353 { 4974 {
3354 EV_P = w->other; 4975 EV_P = w->other;
3355 4976
3356 ev_loop_fork (EV_A); 4977 ev_loop_fork (EV_A);
3357 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4978 ev_run (EV_A_ EVRUN_NOWAIT);
3358 } 4979 }
3359 4980
3360 ev_embed_start (EV_A_ w); 4981 ev_embed_start (EV_A_ w);
3361} 4982}
3362 4983
… …
3367 ev_idle_stop (EV_A_ idle); 4988 ev_idle_stop (EV_A_ idle);
3368} 4989}
3369#endif 4990#endif
3370 4991
3371void 4992void
3372ev_embed_start (EV_P_ ev_embed *w) 4993ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3373{ 4994{
3374 if (expect_false (ev_is_active (w))) 4995 if (ecb_expect_false (ev_is_active (w)))
3375 return; 4996 return;
3376 4997
3377 { 4998 {
3378 EV_P = w->other; 4999 EV_P = w->other;
3379 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 ()));
… …
3398 5019
3399 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
3400} 5021}
3401 5022
3402void 5023void
3403ev_embed_stop (EV_P_ ev_embed *w) 5024ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3404{ 5025{
3405 clear_pending (EV_A_ (W)w); 5026 clear_pending (EV_A_ (W)w);
3406 if (expect_false (!ev_is_active (w))) 5027 if (ecb_expect_false (!ev_is_active (w)))
3407 return; 5028 return;
3408 5029
3409 EV_FREQUENT_CHECK; 5030 EV_FREQUENT_CHECK;
3410 5031
3411 ev_io_stop (EV_A_ &w->io); 5032 ev_io_stop (EV_A_ &w->io);
3412 ev_prepare_stop (EV_A_ &w->prepare); 5033 ev_prepare_stop (EV_A_ &w->prepare);
3413 ev_fork_stop (EV_A_ &w->fork); 5034 ev_fork_stop (EV_A_ &w->fork);
3414 5035
5036 ev_stop (EV_A_ (W)w);
5037
3415 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3416} 5039}
3417#endif 5040#endif
3418 5041
3419#if EV_FORK_ENABLE 5042#if EV_FORK_ENABLE
3420void 5043void
3421ev_fork_start (EV_P_ ev_fork *w) 5044ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3422{ 5045{
3423 if (expect_false (ev_is_active (w))) 5046 if (ecb_expect_false (ev_is_active (w)))
3424 return; 5047 return;
3425 5048
3426 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3427 5050
3428 ev_start (EV_A_ (W)w, ++forkcnt); 5051 ev_start (EV_A_ (W)w, ++forkcnt);
3429 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5052 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3430 forks [forkcnt - 1] = w; 5053 forks [forkcnt - 1] = w;
3431 5054
3432 EV_FREQUENT_CHECK; 5055 EV_FREQUENT_CHECK;
3433} 5056}
3434 5057
3435void 5058void
3436ev_fork_stop (EV_P_ ev_fork *w) 5059ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3437{ 5060{
3438 clear_pending (EV_A_ (W)w); 5061 clear_pending (EV_A_ (W)w);
3439 if (expect_false (!ev_is_active (w))) 5062 if (ecb_expect_false (!ev_is_active (w)))
3440 return; 5063 return;
3441 5064
3442 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
3443 5066
3444 { 5067 {
… …
3452 5075
3453 EV_FREQUENT_CHECK; 5076 EV_FREQUENT_CHECK;
3454} 5077}
3455#endif 5078#endif
3456 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
3457#if EV_ASYNC_ENABLE 5121#if EV_ASYNC_ENABLE
3458void 5122void
3459ev_async_start (EV_P_ ev_async *w) 5123ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3460{ 5124{
3461 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
3462 return; 5126 return;
3463 5127
5128 w->sent = 0;
5129
3464 evpipe_init (EV_A); 5130 evpipe_init (EV_A);
3465 5131
3466 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3467 5133
3468 ev_start (EV_A_ (W)w, ++asynccnt); 5134 ev_start (EV_A_ (W)w, ++asynccnt);
3469 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5135 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3470 asyncs [asynccnt - 1] = w; 5136 asyncs [asynccnt - 1] = w;
3471 5137
3472 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3473} 5139}
3474 5140
3475void 5141void
3476ev_async_stop (EV_P_ ev_async *w) 5142ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3477{ 5143{
3478 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3479 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3480 return; 5146 return;
3481 5147
3482 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3483 5149
3484 { 5150 {
… …
3492 5158
3493 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
3494} 5160}
3495 5161
3496void 5162void
3497ev_async_send (EV_P_ ev_async *w) 5163ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3498{ 5164{
3499 w->sent = 1; 5165 w->sent = 1;
3500 evpipe_write (EV_A_ &async_pending); 5166 evpipe_write (EV_A_ &async_pending);
3501} 5167}
3502#endif 5168#endif
… …
3539 5205
3540 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));
3541} 5207}
3542 5208
3543void 5209void
3544ev_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
3545{ 5211{
3546 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));
3547
3548 if (expect_false (!once))
3549 {
3550 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3551 return;
3552 }
3553 5213
3554 once->cb = cb; 5214 once->cb = cb;
3555 once->arg = arg; 5215 once->arg = arg;
3556 5216
3557 ev_init (&once->io, once_cb_io); 5217 ev_init (&once->io, once_cb_io);
… …
3570} 5230}
3571 5231
3572/*****************************************************************************/ 5232/*****************************************************************************/
3573 5233
3574#if EV_WALK_ENABLE 5234#if EV_WALK_ENABLE
5235ecb_cold
3575void 5236void
3576ev_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
3577{ 5238{
3578 int i, j; 5239 int i, j;
3579 ev_watcher_list *wl, *wn; 5240 ev_watcher_list *wl, *wn;
3580 5241
3581 if (types & (EV_IO | EV_EMBED)) 5242 if (types & (EV_IO | EV_EMBED))
… …
3624 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5285 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3625#endif 5286#endif
3626 5287
3627#if EV_IDLE_ENABLE 5288#if EV_IDLE_ENABLE
3628 if (types & EV_IDLE) 5289 if (types & EV_IDLE)
3629 for (j = NUMPRI; i--; ) 5290 for (j = NUMPRI; j--; )
3630 for (i = idlecnt [j]; i--; ) 5291 for (i = idlecnt [j]; i--; )
3631 cb (EV_A_ EV_IDLE, idles [j][i]); 5292 cb (EV_A_ EV_IDLE, idles [j][i]);
3632#endif 5293#endif
3633 5294
3634#if EV_FORK_ENABLE 5295#if EV_FORK_ENABLE
… …
3642 if (types & EV_ASYNC) 5303 if (types & EV_ASYNC)
3643 for (i = asynccnt; i--; ) 5304 for (i = asynccnt; i--; )
3644 cb (EV_A_ EV_ASYNC, asyncs [i]); 5305 cb (EV_A_ EV_ASYNC, asyncs [i]);
3645#endif 5306#endif
3646 5307
5308#if EV_PREPARE_ENABLE
3647 if (types & EV_PREPARE) 5309 if (types & EV_PREPARE)
3648 for (i = preparecnt; i--; ) 5310 for (i = preparecnt; i--; )
3649#if EV_EMBED_ENABLE 5311# if EV_EMBED_ENABLE
3650 if (ev_cb (prepares [i]) != embed_prepare_cb) 5312 if (ev_cb (prepares [i]) != embed_prepare_cb)
3651#endif 5313# endif
3652 cb (EV_A_ EV_PREPARE, prepares [i]); 5314 cb (EV_A_ EV_PREPARE, prepares [i]);
5315#endif
3653 5316
5317#if EV_CHECK_ENABLE
3654 if (types & EV_CHECK) 5318 if (types & EV_CHECK)
3655 for (i = checkcnt; i--; ) 5319 for (i = checkcnt; i--; )
3656 cb (EV_A_ EV_CHECK, checks [i]); 5320 cb (EV_A_ EV_CHECK, checks [i]);
5321#endif
3657 5322
5323#if EV_SIGNAL_ENABLE
3658 if (types & EV_SIGNAL) 5324 if (types & EV_SIGNAL)
3659 for (i = 0; i < EV_NSIG - 1; ++i) 5325 for (i = 0; i < EV_NSIG - 1; ++i)
3660 for (wl = signals [i].head; wl; ) 5326 for (wl = signals [i].head; wl; )
3661 { 5327 {
3662 wn = wl->next; 5328 wn = wl->next;
3663 cb (EV_A_ EV_SIGNAL, wl); 5329 cb (EV_A_ EV_SIGNAL, wl);
3664 wl = wn; 5330 wl = wn;
3665 } 5331 }
5332#endif
3666 5333
5334#if EV_CHILD_ENABLE
3667 if (types & EV_CHILD) 5335 if (types & EV_CHILD)
3668 for (i = EV_PID_HASHSIZE; i--; ) 5336 for (i = (EV_PID_HASHSIZE); i--; )
3669 for (wl = childs [i]; wl; ) 5337 for (wl = childs [i]; wl; )
3670 { 5338 {
3671 wn = wl->next; 5339 wn = wl->next;
3672 cb (EV_A_ EV_CHILD, wl); 5340 cb (EV_A_ EV_CHILD, wl);
3673 wl = wn; 5341 wl = wn;
3674 } 5342 }
5343#endif
3675/* EV_STAT 0x00001000 /* stat data changed */ 5344/* EV_STAT 0x00001000 /* stat data changed */
3676/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5345/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3677} 5346}
3678#endif 5347#endif
3679 5348
3680#if EV_MULTIPLICITY 5349#if EV_MULTIPLICITY
3681 #include "ev_wrap.h" 5350 #include "ev_wrap.h"
3682#endif 5351#endif
3683 5352
3684#ifdef __cplusplus
3685}
3686#endif
3687

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines