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Comparing libev/ev.c (file contents):
Revision 1.306 by root, Sun Jul 19 06:35:25 2009 UTC vs.
Revision 1.511 by root, Fri Nov 22 14:32:13 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/* one some platforms, NSIG is one too large. we do not bother */
193#if defined (EV_NSIG) 245#if defined EV_NSIG
194/* use what's provided */ 246/* use what's provided */
195#elif defined (NSIG) 247#elif defined NSIG
196# define EV_NSIG (NSIG) 248# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 249#elif defined _NSIG
198# define EV_NSIG (_NSIG) 250# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 251#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 252# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 253#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 254# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 255#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 256# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 257#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 258# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 259#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 260# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 261#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 263#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 265#else
214# error "unable to find value for NSIG, please report" 266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
215/* to make it compile regardless, just remove the above line */ 267#endif
216# define EV_NSIG 65 268
269#ifndef EV_USE_FLOOR
270# define EV_USE_FLOOR 0
217#endif 271#endif
218 272
219#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
221# define EV_USE_CLOCK_SYSCALL 1 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 276# else
223# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
224# endif 278# endif
225#endif 279#endif
226 280
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
227#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 292# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 293# else
231# define EV_USE_MONOTONIC 0 294# define EV_USE_MONOTONIC 0
232# endif 295# endif
233#endif 296#endif
234 297
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 299# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 300#endif
238 301
239#ifndef EV_USE_NANOSLEEP 302#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 303# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 304# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 305# else
243# define EV_USE_NANOSLEEP 0 306# define EV_USE_NANOSLEEP 0
244# endif 307# endif
245#endif 308#endif
246 309
247#ifndef EV_USE_SELECT 310#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 311# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 312#endif
250 313
251#ifndef EV_USE_POLL 314#ifndef EV_USE_POLL
252# ifdef _WIN32 315# ifdef _WIN32
253# define EV_USE_POLL 0 316# define EV_USE_POLL 0
254# else 317# else
255# define EV_USE_POLL 1 318# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 319# endif
257#endif 320#endif
258 321
259#ifndef EV_USE_EPOLL 322#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 323# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 324# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 325# else
263# define EV_USE_EPOLL 0 326# define EV_USE_EPOLL 0
264# endif 327# endif
265#endif 328#endif
266 329
… …
270 333
271#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
272# define EV_USE_PORT 0 335# define EV_USE_PORT 0
273#endif 336#endif
274 337
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
275#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 356# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 357# else
279# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
280# endif 359# endif
281#endif 360#endif
282 361
283#ifndef EV_PID_HASHSIZE 362#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 363# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 364#endif
290 365
291#ifndef EV_INOTIFY_HASHSIZE 366#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 367# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 368#endif
298 369
299#ifndef EV_USE_EVENTFD 370#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 371# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 372# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 373# else
303# define EV_USE_EVENTFD 0 374# define EV_USE_EVENTFD 0
304# endif 375# endif
305#endif 376#endif
306 377
307#ifndef EV_USE_SIGNALFD 378#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 379# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 380# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 381# else
311# define EV_USE_SIGNALFD 0 382# define EV_USE_SIGNALFD 0
312# endif 383# endif
313#endif 384#endif
314 385
… …
317# define EV_USE_4HEAP 1 388# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 389# define EV_HEAP_CACHE_AT 1
319#endif 390#endif
320 391
321#ifndef EV_VERIFY 392#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 393# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 394#endif
324 395
325#ifndef EV_USE_4HEAP 396#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 397# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 398#endif
328 399
329#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
330# 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
331#endif 418#endif
332 419
333/* 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, */
334/* which makes programs even slower. might work on other unices, too. */ 421/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 423# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
341# else 429# else
342# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
343# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
344# endif 432# endif
345#endif 433#endif
… …
359#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
360# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
362#endif 450#endif
363 451
452#if __linux && EV_USE_IOURING
453# include <linux/fs.h>
454# ifndef RWF_SYNC
455# undef EV_USE_IOURING
456# define EV_USE_IOURING 0
457# endif
458#endif
459
364#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 461/* hp-ux has it in sys/time.h, which we unconditionally include above */
462# if !defined _WIN32 && !defined __hpux
366# include <sys/select.h> 463# include <sys/select.h>
367# endif 464# endif
368#endif 465#endif
369 466
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
370#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 493# include <sys/statfs.h>
373# include <sys/inotify.h> 494# include <sys/inotify.h>
374/* 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 */
375# ifndef IN_DONT_FOLLOW 496# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 497# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 498# define EV_USE_INOTIFY 0
378# endif 499# endif
379#endif 500#endif
380 501
381#if EV_SELECT_IS_WINSOCKET
382# include <winsock.h>
383#endif
384
385#if EV_USE_EVENTFD 502#if EV_USE_EVENTFD
386/* 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 */
387# include <stdint.h> 504# include <stdint.h>
388# ifndef EFD_NONBLOCK 505# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK 506# define EFD_NONBLOCK O_NONBLOCK
390# endif 507# endif
391# ifndef EFD_CLOEXEC 508# ifndef EFD_CLOEXEC
509# ifdef O_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC 510# define EFD_CLOEXEC O_CLOEXEC
511# else
512# define EFD_CLOEXEC 02000000
513# endif
393# endif 514# endif
394# ifdef __cplusplus 515EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
395extern "C" { 516#endif
517
518#if EV_USE_SIGNALFD
519/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
520# include <stdint.h>
521# ifndef SFD_NONBLOCK
522# define SFD_NONBLOCK O_NONBLOCK
396# endif 523# endif
397int eventfd (unsigned int initval, int flags); 524# ifndef SFD_CLOEXEC
398# ifdef __cplusplus 525# ifdef O_CLOEXEC
399} 526# define SFD_CLOEXEC O_CLOEXEC
527# else
528# define SFD_CLOEXEC 02000000
529# endif
400# endif 530# endif
401#endif 531EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
402 532
403#if EV_USE_SIGNALFD 533struct signalfd_siginfo
404# include <sys/signalfd.h> 534{
535 uint32_t ssi_signo;
536 char pad[128 - sizeof (uint32_t)];
537};
405#endif 538#endif
406 539
407/**/ 540/*****************************************************************************/
408 541
409#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
410# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
411#else 544#else
412# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
413#endif 546#endif
414 547
415/* 548/*
416 * This is used to avoid floating point rounding problems. 549 * This is used to work around floating point rounding problems.
417 * It is added to ev_rt_now when scheduling periodics
418 * to ensure progress, time-wise, even when rounding
419 * errors are against us.
420 * This value is good at least till the year 4000. 550 * This value is good at least till the year 4000.
421 * Better solutions welcome.
422 */ 551 */
423#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 */
424 554
425#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) */
426#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) */
427/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
428 557
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;
429#if __GNUC__ >= 4 631 #if __GNUC__
430# define expect(expr,value) __builtin_expect ((expr),(value)) 632 typedef signed long long int64_t;
431# 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
432#else 647#else
433# define expect(expr,value) (expr) 648 #include <inttypes.h>
434# define noinline 649 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
435# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 650 #define ECB_PTRSIZE 8
436# define inline 651 #else
652 #define ECB_PTRSIZE 4
653 #endif
437# 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
438#endif 665 #endif
666#endif
439 667
440#define expect_false(expr) expect ((expr) != 0, 0) 668/* many compilers define _GNUC_ to some versions but then only implement
441#define expect_true(expr) expect ((expr) != 0, 1) 669 * what their idiot authors think are the "more important" extensions,
442#define inline_size static inline 670 * causing enormous grief in return for some better fake benchmark numbers.
443 671 * or so.
444#if EV_MINIMAL 672 * we try to detect these and simply assume they are not gcc - if they have
445# 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
446#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
447# define inline_speed static inline 1616# define inline_speed ecb_inline
1617#else
1618# define inline_speed ecb_noinline static
448#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/*****************************************************************************/
449 1686
450#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
451 1688
452#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
453# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
454#else 1691#else
455# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
456#endif 1693#endif
457 1694
458#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
459#define EMPTY2(a,b) /* used to suppress some warnings */
460 1696
461typedef ev_watcher *W; 1697typedef ev_watcher *W;
462typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
463typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
464 1700
465#define ev_active(w) ((W)(w))->active 1701#define ev_active(w) ((W)(w))->active
466#define ev_at(w) ((WT)(w))->at 1702#define ev_at(w) ((WT)(w))->at
467 1703
468#if EV_USE_REALTIME 1704#if EV_USE_REALTIME
469/* 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 */
470/* giving it a reasonably high chance of working on typical architetcures */ 1706/* giving it a reasonably high chance of working on typical architectures */
471static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1707static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
472#endif 1708#endif
473 1709
474#if EV_USE_MONOTONIC 1710#if EV_USE_MONOTONIC
475static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1711static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
476#endif 1712#endif
477 1713
1714#ifndef EV_FD_TO_WIN32_HANDLE
1715# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1716#endif
1717#ifndef EV_WIN32_HANDLE_TO_FD
1718# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1719#endif
1720#ifndef EV_WIN32_CLOSE_FD
1721# define EV_WIN32_CLOSE_FD(fd) close (fd)
1722#endif
1723
478#ifdef _WIN32 1724#ifdef _WIN32
479# include "ev_win32.c" 1725# include "ev_win32.c"
480#endif 1726#endif
481 1727
482/*****************************************************************************/ 1728/*****************************************************************************/
483 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
484static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
485 1836
1837ecb_cold
486void 1838void
487ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
488{ 1840{
489 syserr_cb = cb; 1841 syserr_cb = cb;
490} 1842}
491 1843
492static void noinline 1844ecb_noinline ecb_cold
1845static void
493ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
494{ 1847{
495 if (!msg) 1848 if (!msg)
496 msg = "(libev) system error"; 1849 msg = "(libev) system error";
497 1850
498 if (syserr_cb) 1851 if (syserr_cb)
499 syserr_cb (msg); 1852 syserr_cb (msg);
500 else 1853 else
501 { 1854 {
1855#if EV_AVOID_STDIO
1856 ev_printerr (msg);
1857 ev_printerr (": ");
1858 ev_printerr (strerror (errno));
1859 ev_printerr ("\n");
1860#else
502 perror (msg); 1861 perror (msg);
1862#endif
503 abort (); 1863 abort ();
504 } 1864 }
505} 1865}
506 1866
507static void * 1867static void *
508ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
509{ 1869{
510 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
511 * 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
512 * 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.
513 */ 1875 */
514 1876
515 if (size) 1877 if (size)
516 return realloc (ptr, size); 1878 return realloc (ptr, size);
517 1879
518 free (ptr); 1880 free (ptr);
519 return 0; 1881 return 0;
520} 1882}
521 1883
522static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
523 1885
1886ecb_cold
524void 1887void
525ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
526{ 1889{
527 alloc = cb; 1890 alloc = cb;
528} 1891}
529 1892
530inline_speed void * 1893inline_speed void *
… …
532{ 1895{
533 ptr = alloc (ptr, size); 1896 ptr = alloc (ptr, size);
534 1897
535 if (!ptr && size) 1898 if (!ptr && size)
536 { 1899 {
1900#if EV_AVOID_STDIO
1901 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1902#else
537 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1903 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1904#endif
538 abort (); 1905 abort ();
539 } 1906 }
540 1907
541 return ptr; 1908 return ptr;
542} 1909}
… …
553typedef struct 1920typedef struct
554{ 1921{
555 WL head; 1922 WL head;
556 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
557 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) */
558 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 */
559 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
560#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
561 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
562#endif 1929#endif
563#if EV_SELECT_IS_WINSOCKET 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
564 SOCKET handle; 1931 SOCKET handle;
1932#endif
1933#if EV_USE_IOCP
1934 OVERLAPPED or, ow;
565#endif 1935#endif
566} ANFD; 1936} ANFD;
567 1937
568/* stores the pending event set for a given watcher */ 1938/* stores the pending event set for a given watcher */
569typedef struct 1939typedef struct
… …
611 #undef VAR 1981 #undef VAR
612 }; 1982 };
613 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
614 1984
615 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
616 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 */
617 1987
618#else 1988#else
619 1989
620 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 */
621 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
622 #include "ev_vars.h" 1992 #include "ev_vars.h"
623 #undef VAR 1993 #undef VAR
624 1994
625 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
626 1996
627#endif 1997#endif
628 1998
629#if EV_MINIMAL < 2 1999#if EV_FEATURE_API
630# 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)
631# 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)
632# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
633#else 2003#else
634# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
635# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
637#endif 2007#endif
638 2008
639#define EVUNLOOP_RECURSE 0x80 2009#define EVBREAK_RECURSE 0x80
640 2010
641/*****************************************************************************/ 2011/*****************************************************************************/
642 2012
643#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
644ev_tstamp 2014ev_tstamp
645ev_time (void) 2015ev_time (void) EV_NOEXCEPT
646{ 2016{
647#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
648 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
649 { 2019 {
650 struct timespec ts; 2020 struct timespec ts;
651 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
652 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
653 } 2023 }
654#endif 2024#endif
655 2025
2026 {
656 struct timeval tv; 2027 struct timeval tv;
657 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
658 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
659} 2031}
660#endif 2032#endif
661 2033
662inline_size ev_tstamp 2034inline_size ev_tstamp
663get_clock (void) 2035get_clock (void)
664{ 2036{
665#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
666 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
667 { 2039 {
668 struct timespec ts; 2040 struct timespec ts;
669 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
670 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
671 } 2043 }
672#endif 2044#endif
673 2045
674 return ev_time (); 2046 return ev_time ();
675} 2047}
676 2048
677#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
678ev_tstamp 2050ev_tstamp
679ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
680{ 2052{
681 return ev_rt_now; 2053 return ev_rt_now;
682} 2054}
683#endif 2055#endif
684 2056
685void 2057void
686ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
687{ 2059{
688 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
689 { 2061 {
690#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
691 struct timespec ts; 2063 struct timespec ts;
692 2064
693 ts.tv_sec = (time_t)delay; 2065 EV_TS_SET (ts, delay);
694 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
695
696 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
697#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) */
698 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
699#else 2071#else
700 struct timeval tv; 2072 struct timeval tv;
701
702 tv.tv_sec = (time_t)delay;
703 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
704 2073
705 /* 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 */
706 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
707 /* by older ones */ 2076 /* by older ones */
2077 EV_TV_SET (tv, delay);
708 select (0, 0, 0, 0, &tv); 2078 select (0, 0, 0, 0, &tv);
709#endif 2079#endif
710 } 2080 }
711} 2081}
712 2082
713/*****************************************************************************/ 2083/*****************************************************************************/
714 2084
715#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 */
716 2086
717/* find a suitable new size for the given array, */ 2087/* find a suitable new size for the given array, */
718/* hopefully by rounding to a ncie-to-malloc size */ 2088/* hopefully by rounding to a nice-to-malloc size */
719inline_size int 2089inline_size int
720array_nextsize (int elem, int cur, int cnt) 2090array_nextsize (int elem, int cur, int cnt)
721{ 2091{
722 int ncur = cur + 1; 2092 int ncur = cur + 1;
723 2093
724 do 2094 do
725 ncur <<= 1; 2095 ncur <<= 1;
726 while (cnt > ncur); 2096 while (cnt > ncur);
727 2097
728 /* 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 */
729 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
730 { 2100 {
731 ncur *= elem; 2101 ncur *= elem;
732 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);
733 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
735 } 2105 }
736 2106
737 return ncur; 2107 return ncur;
738} 2108}
739 2109
740static noinline void * 2110ecb_noinline ecb_cold
2111static void *
741array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
742{ 2113{
743 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
744 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
745} 2116}
746 2117
2118#define array_needsize_noinit(base,offset,count)
2119
747#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
748 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
749 2122
750#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
751 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
752 { \ 2125 { \
753 int ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
754 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
755 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
756 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
757 } 2130 }
758 2131
759#if 0 2132#if 0
760#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
761 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
770 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
771 2144
772/*****************************************************************************/ 2145/*****************************************************************************/
773 2146
774/* dummy callback for pending events */ 2147/* dummy callback for pending events */
775static void noinline 2148ecb_noinline
2149static void
776pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
777{ 2151{
778} 2152}
779 2153
780void noinline 2154ecb_noinline
2155void
781ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
782{ 2157{
783 W w_ = (W)w; 2158 W w_ = (W)w;
784 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
785 2160
786 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
787 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
788 else 2163 else
789 { 2164 {
790 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
791 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
792 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
793 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
794 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
795} 2172}
796 2173
797inline_speed void 2174inline_speed void
798feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
799{ 2176{
800 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
801 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
802} 2179}
803 2180
804inline_size void 2181inline_size void
805feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
819} 2196}
820 2197
821/*****************************************************************************/ 2198/*****************************************************************************/
822 2199
823inline_speed void 2200inline_speed void
824fd_event_nc (EV_P_ int fd, int revents) 2201fd_event_nocheck (EV_P_ int fd, int revents)
825{ 2202{
826 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
827 ev_io *w; 2204 ev_io *w;
828 2205
829 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)
… …
840inline_speed void 2217inline_speed void
841fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
842{ 2219{
843 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
844 2221
845 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
846 fd_event_nc (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
847} 2224}
848 2225
849void 2226void
850ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
851{ 2228{
852 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
853 fd_event_nc (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
854} 2231}
855 2232
856/* make sure the external fd watch events are in-sync */ 2233/* make sure the external fd watch events are in-sync */
857/* with the kernel/libev internal state */ 2234/* with the kernel/libev internal state */
858inline_size void 2235inline_size void
859fd_reify (EV_P) 2236fd_reify (EV_P)
860{ 2237{
861 int i; 2238 int i;
862 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
863 for (i = 0; i < fdchangecnt; ++i) 2265 for (i = 0; i < fdchangecnt; ++i)
864 { 2266 {
865 int fd = fdchanges [i]; 2267 int fd = fdchanges [i];
866 ANFD *anfd = anfds + fd; 2268 ANFD *anfd = anfds + fd;
867 ev_io *w; 2269 ev_io *w;
868 2270
869 unsigned char events = 0; 2271 unsigned char o_events = anfd->events;
2272 unsigned char o_reify = anfd->reify;
870 2273
871 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2274 anfd->reify = 0;
872 events |= (unsigned char)w->events;
873 2275
874#if EV_SELECT_IS_WINSOCKET 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
875 if (events)
876 { 2277 {
877 unsigned long arg; 2278 anfd->events = 0;
878 #ifdef EV_FD_TO_WIN32_HANDLE 2279
879 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2280 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
880 #else 2281 anfd->events |= (unsigned char)w->events;
881 anfd->handle = _get_osfhandle (fd); 2282
882 #endif 2283 if (o_events != anfd->events)
883 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2284 o_reify = EV__IOFDSET; /* actually |= */
884 } 2285 }
885#endif
886 2286
887 { 2287 if (o_reify & EV__IOFDSET)
888 unsigned char o_events = anfd->events;
889 unsigned char o_reify = anfd->reify;
890
891 anfd->reify = 0;
892 anfd->events = events;
893
894 if (o_events != events || o_reify & EV__IOFDSET)
895 backend_modify (EV_A_ fd, o_events, events); 2288 backend_modify (EV_A_ fd, o_events, anfd->events);
896 }
897 } 2289 }
898 2290
899 fdchangecnt = 0; 2291 fdchangecnt = 0;
900} 2292}
901 2293
902/* something about the given fd changed */ 2294/* something about the given fd changed */
903inline_size void 2295inline_size
2296void
904fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
905{ 2298{
906 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
907 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
908 2301
909 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
910 { 2303 {
911 ++fdchangecnt; 2304 ++fdchangecnt;
912 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
913 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
914 } 2307 }
915} 2308}
916 2309
917/* 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 */
918inline_speed void 2311inline_speed ecb_cold void
919fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
920{ 2313{
921 ev_io *w; 2314 ev_io *w;
922 2315
923 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
925 ev_io_stop (EV_A_ w); 2318 ev_io_stop (EV_A_ w);
926 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);
927 } 2320 }
928} 2321}
929 2322
930/* check whether the given fd is atcually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
931inline_size int 2324inline_size ecb_cold int
932fd_valid (int fd) 2325fd_valid (int fd)
933{ 2326{
934#ifdef _WIN32 2327#ifdef _WIN32
935 return _get_osfhandle (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
936#else 2329#else
937 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
938#endif 2331#endif
939} 2332}
940 2333
941/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
942static void noinline 2335ecb_noinline ecb_cold
2336static void
943fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
944{ 2338{
945 int fd; 2339 int fd;
946 2340
947 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
949 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
950 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
951} 2345}
952 2346
953/* 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 */
954static void noinline 2348ecb_noinline ecb_cold
2349static void
955fd_enomem (EV_P) 2350fd_enomem (EV_P)
956{ 2351{
957 int fd; 2352 int fd;
958 2353
959 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
960 if (anfds [fd].events) 2355 if (anfds [fd].events)
961 { 2356 {
962 fd_kill (EV_A_ fd); 2357 fd_kill (EV_A_ fd);
963 return; 2358 break;
964 } 2359 }
965} 2360}
966 2361
967/* 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 */
968static void noinline 2363ecb_noinline
2364static void
969fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
970{ 2366{
971 int fd; 2367 int fd;
972 2368
973 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
977 anfds [fd].emask = 0; 2373 anfds [fd].emask = 0;
978 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2374 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
979 } 2375 }
980} 2376}
981 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
982/*****************************************************************************/ 2392/*****************************************************************************/
983 2393
984/* 2394/*
985 * 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
986 * 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
987 * the branching factor of the d-tree. 2397 * the branching factor of the d-tree.
988 */ 2398 */
989 2399
990/* 2400/*
… …
1012 ev_tstamp minat; 2422 ev_tstamp minat;
1013 ANHE *minpos; 2423 ANHE *minpos;
1014 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1015 2425
1016 /* find minimum child */ 2426 /* find minimum child */
1017 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1018 { 2428 {
1019 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1020 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));
1021 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));
1022 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));
1023 } 2433 }
1024 else if (pos < E) 2434 else if (pos < E)
1025 { 2435 {
1026 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1027 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));
1028 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));
1029 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));
1030 } 2440 }
1031 else 2441 else
1032 break; 2442 break;
1033 2443
1034 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1042 2452
1043 heap [k] = he; 2453 heap [k] = he;
1044 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1045} 2455}
1046 2456
1047#else /* 4HEAP */ 2457#else /* not 4HEAP */
1048 2458
1049#define HEAP0 1 2459#define HEAP0 1
1050#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1051#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1052 2462
… …
1058 2468
1059 for (;;) 2469 for (;;)
1060 { 2470 {
1061 int c = k << 1; 2471 int c = k << 1;
1062 2472
1063 if (c > N + HEAP0 - 1) 2473 if (c >= N + HEAP0)
1064 break; 2474 break;
1065 2475
1066 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2476 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1067 ? 1 : 0; 2477 ? 1 : 0;
1068 2478
… …
1104 2514
1105/* move an element suitably so it is in a correct place */ 2515/* move an element suitably so it is in a correct place */
1106inline_size void 2516inline_size void
1107adjustheap (ANHE *heap, int N, int k) 2517adjustheap (ANHE *heap, int N, int k)
1108{ 2518{
1109 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2519 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1110 upheap (heap, k); 2520 upheap (heap, k);
1111 else 2521 else
1112 downheap (heap, N, k); 2522 downheap (heap, N, k);
1113} 2523}
1114 2524
… …
1127/*****************************************************************************/ 2537/*****************************************************************************/
1128 2538
1129/* associate signal watchers to a signal signal */ 2539/* associate signal watchers to a signal signal */
1130typedef struct 2540typedef struct
1131{ 2541{
2542 EV_ATOMIC_T pending;
1132#if EV_MULTIPLICITY 2543#if EV_MULTIPLICITY
1133 EV_P; 2544 EV_P;
1134#endif 2545#endif
1135 WL head; 2546 WL head;
1136 EV_ATOMIC_T gotsig;
1137} ANSIG; 2547} ANSIG;
1138 2548
1139static ANSIG signals [EV_NSIG - 1]; 2549static ANSIG signals [EV_NSIG - 1];
1140static EV_ATOMIC_T gotsig;
1141 2550
1142/*****************************************************************************/ 2551/*****************************************************************************/
1143 2552
1144/* used to prepare libev internal fd's */ 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1145/* 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
1146inline_speed void 2601inline_speed void
1147fd_intern (int fd) 2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1148{ 2603{
1149#ifdef _WIN32 2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1150 unsigned long arg = 1;
1151 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1152#else
1153 fcntl (fd, F_SETFD, FD_CLOEXEC);
1154 fcntl (fd, F_SETFL, O_NONBLOCK);
1155#endif
1156}
1157 2605
1158static void noinline 2606 if (ecb_expect_true (*flag))
1159evpipe_init (EV_P) 2607 return;
1160{ 2608
1161 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)
1162 { 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
1163#if EV_USE_EVENTFD 2625#if EV_USE_EVENTFD
1164 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2626 if (evpipe [0] < 0)
1165 if (evfd < 0 && errno == EINVAL)
1166 evfd = eventfd (0, 0);
1167
1168 if (evfd >= 0)
1169 { 2627 {
1170 evpipe [0] = -1; 2628 uint64_t counter = 1;
1171 fd_intern (evfd); /* doing it twice doesn't hurt */ 2629 write (evpipe [1], &counter, sizeof (uint64_t));
1172 ev_io_set (&pipe_w, evfd, EV_READ);
1173 } 2630 }
1174 else 2631 else
1175#endif 2632#endif
1176 { 2633 {
1177 while (pipe (evpipe)) 2634#ifdef _WIN32
1178 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1179 2636 DWORD sent;
1180 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1181 fd_intern (evpipe [1]); 2638 buf.len = 1;
1182 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
1183 } 2643 }
1184
1185 ev_io_start (EV_A_ &pipe_w);
1186 ev_unref (EV_A); /* watcher should not keep loop alive */
1187 }
1188}
1189
1190inline_size void
1191evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1192{
1193 if (!*flag)
1194 {
1195 int old_errno = errno; /* save errno because write might clobber it */
1196
1197 *flag = 1;
1198
1199#if EV_USE_EVENTFD
1200 if (evfd >= 0)
1201 {
1202 uint64_t counter = 1;
1203 write (evfd, &counter, sizeof (uint64_t));
1204 }
1205 else
1206#endif
1207 write (evpipe [1], &old_errno, 1);
1208 2644
1209 errno = old_errno; 2645 errno = old_errno;
1210 } 2646 }
1211} 2647}
1212 2648
1213/* called whenever the libev signal pipe */ 2649/* called whenever the libev signal pipe */
1214/* got some events (signal, async) */ 2650/* got some events (signal, async) */
1215static void 2651static void
1216pipecb (EV_P_ ev_io *iow, int revents) 2652pipecb (EV_P_ ev_io *iow, int revents)
1217{ 2653{
2654 int i;
2655
2656 if (revents & EV_READ)
2657 {
1218#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1219 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1220 { 2660 {
1221 uint64_t counter; 2661 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1223 } 2663 }
1224 else 2664 else
1225#endif 2665#endif
1226 { 2666 {
1227 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
1228 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
2678 }
2679 }
2680
2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2684
2685#if EV_SIGNAL_ENABLE
2686 if (sig_pending)
1229 } 2687 {
2688 sig_pending = 0;
1230 2689
1231 if (gotsig && ev_is_default_loop (EV_A)) 2690 ECB_MEMORY_FENCE;
1232 {
1233 int signum;
1234 gotsig = 0;
1235 2691
1236 for (signum = EV_NSIG - 1; signum--; ) 2692 for (i = EV_NSIG - 1; i--; )
1237 if (signals [signum].gotsig) 2693 if (ecb_expect_false (signals [i].pending))
1238 ev_feed_signal_event (EV_A_ signum + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1239 } 2695 }
2696#endif
1240 2697
1241#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1242 if (gotasync) 2699 if (async_pending)
1243 { 2700 {
1244 int i; 2701 async_pending = 0;
1245 gotasync = 0; 2702
2703 ECB_MEMORY_FENCE;
1246 2704
1247 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1248 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1249 { 2707 {
1250 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1251 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1252 } 2711 }
1253 } 2712 }
1254#endif 2713#endif
1255} 2714}
1256 2715
1257/*****************************************************************************/ 2716/*****************************************************************************/
1258 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
1259static void 2734static void
1260ev_sighandler (int signum) 2735ev_sighandler (int signum)
1261{ 2736{
2737#ifdef _WIN32
2738 signal (signum, ev_sighandler);
2739#endif
2740
2741 ev_feed_signal (signum);
2742}
2743
2744ecb_noinline
2745void
2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2747{
2748 WL w;
2749
2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2751 return;
2752
2753 --signum;
2754
1262#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1263 EV_P = signals [signum - 1].loop; 2756 /* it is permissible to try to feed a signal to the wrong loop */
1264#endif 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1265 2758
1266#if _WIN32 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1267 signal (signum, ev_sighandler);
1268#endif
1269
1270 signals [signum - 1].gotsig = 1;
1271 evpipe_write (EV_A_ &gotsig);
1272}
1273
1274void noinline
1275ev_feed_signal_event (EV_P_ int signum)
1276{
1277 WL w;
1278
1279#if EV_MULTIPLICITY
1280 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1281#endif
1282
1283 if (signum <= 0 || signum > EV_NSIG)
1284 return; 2760 return;
2761#endif
1285 2762
1286 --signum;
1287
1288 signals [signum].gotsig = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1289 2765
1290 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1291 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1292} 2768}
1293 2769
… …
1309 break; 2785 break;
1310 } 2786 }
1311} 2787}
1312#endif 2788#endif
1313 2789
2790#endif
2791
1314/*****************************************************************************/ 2792/*****************************************************************************/
1315 2793
2794#if EV_CHILD_ENABLE
1316static WL childs [EV_PID_HASHSIZE]; 2795static WL childs [EV_PID_HASHSIZE];
1317
1318#ifndef _WIN32
1319 2796
1320static ev_signal childev; 2797static ev_signal childev;
1321 2798
1322#ifndef WIFCONTINUED 2799#ifndef WIFCONTINUED
1323# define WIFCONTINUED(status) 0 2800# define WIFCONTINUED(status) 0
… …
1328child_reap (EV_P_ int chain, int pid, int status) 2805child_reap (EV_P_ int chain, int pid, int status)
1329{ 2806{
1330 ev_child *w; 2807 ev_child *w;
1331 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2808 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1332 2809
1333 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)
1334 { 2811 {
1335 if ((w->pid == pid || !w->pid) 2812 if ((w->pid == pid || !w->pid)
1336 && (!traced || (w->flags & 1))) 2813 && (!traced || (w->flags & 1)))
1337 { 2814 {
1338 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 */
… …
1363 /* 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 */
1364 /* 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 */
1365 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2842 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1366 2843
1367 child_reap (EV_A_ pid, pid, status); 2844 child_reap (EV_A_ pid, pid, status);
1368 if (EV_PID_HASHSIZE > 1) 2845 if ((EV_PID_HASHSIZE) > 1)
1369 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 */
1370} 2847}
1371 2848
1372#endif 2849#endif
1373 2850
1374/*****************************************************************************/ 2851/*****************************************************************************/
1375 2852
2853#if EV_USE_IOCP
2854# include "ev_iocp.c"
2855#endif
1376#if EV_USE_PORT 2856#if EV_USE_PORT
1377# include "ev_port.c" 2857# include "ev_port.c"
1378#endif 2858#endif
1379#if EV_USE_KQUEUE 2859#if EV_USE_KQUEUE
1380# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1381#endif 2861#endif
1382#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1383# include "ev_epoll.c" 2863# include "ev_epoll.c"
1384#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
1385#if EV_USE_POLL 2871#if EV_USE_POLL
1386# include "ev_poll.c" 2872# include "ev_poll.c"
1387#endif 2873#endif
1388#if EV_USE_SELECT 2874#if EV_USE_SELECT
1389# include "ev_select.c" 2875# include "ev_select.c"
1390#endif 2876#endif
1391 2877
1392int 2878ecb_cold int
1393ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1394{ 2880{
1395 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1396} 2882}
1397 2883
1398int 2884ecb_cold int
1399ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1400{ 2886{
1401 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
1402} 2888}
1403 2889
1404/* 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 */
1405int inline_size 2891inline_size ecb_cold int
1406enable_secure (void) 2892enable_secure (void)
1407{ 2893{
1408#ifdef _WIN32 2894#ifdef _WIN32
1409 return 0; 2895 return 0;
1410#else 2896#else
1411 return getuid () != geteuid () 2897 return getuid () != geteuid ()
1412 || getgid () != getegid (); 2898 || getgid () != getegid ();
1413#endif 2899#endif
1414} 2900}
1415 2901
2902ecb_cold
1416unsigned int 2903unsigned int
1417ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
1418{ 2905{
1419 unsigned int flags = 0; 2906 unsigned int flags = 0;
1420 2907
1421 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1422 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1423 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;
1424 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1425 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1426 2915
1427 return flags; 2916 return flags;
1428} 2917}
1429 2918
2919ecb_cold
1430unsigned int 2920unsigned int
1431ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
1432{ 2922{
1433 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
1434 2924
1435#ifndef __NetBSD__ 2925#ifndef __NetBSD__
1436 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
1440#ifdef __APPLE__ 2930#ifdef __APPLE__
1441 /* only select works correctly on that "unix-certified" platform */ 2931 /* only select works correctly on that "unix-certified" platform */
1442 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2932 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1443 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 */
1444#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
1445 2947
1446 return flags; 2948 return flags;
1447} 2949}
1448 2950
2951ecb_cold
1449unsigned int 2952unsigned int
1450ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
1451{ 2954{
1452 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1453 2956
1454 /* 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 */
1455 /* please fix it and tell me how to detect the fix */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1456 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 */
1457 2967
1458 return flags; 2968 return flags;
1459} 2969}
1460 2970
1461unsigned int 2971unsigned int
1462ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
1463{ 2973{
1464 return backend; 2974 return backend;
1465} 2975}
1466 2976
1467#if EV_MINIMAL < 2 2977#if EV_FEATURE_API
1468unsigned int 2978unsigned int
1469ev_loop_count (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
1470{ 2980{
1471 return loop_count; 2981 return loop_count;
1472} 2982}
1473 2983
1474unsigned int 2984unsigned int
1475ev_loop_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
1476{ 2986{
1477 return loop_depth; 2987 return loop_depth;
1478} 2988}
1479 2989
1480void 2990void
1481ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1482{ 2992{
1483 io_blocktime = interval; 2993 io_blocktime = interval;
1484} 2994}
1485 2995
1486void 2996void
1487ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1488{ 2998{
1489 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
1490} 3000}
1491 3001
1492void 3002void
1493ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1494{ 3004{
1495 userdata = data; 3005 userdata = data;
1496} 3006}
1497 3007
1498void * 3008void *
1499ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
1500{ 3010{
1501 return userdata; 3011 return userdata;
1502} 3012}
1503 3013
3014void
1504void 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
1505{ 3016{
1506 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
1507} 3018}
1508 3019
3020void
1509void 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
1510{ 3022{
1511 release_cb = release; 3023 release_cb = release;
1512 acquire_cb = acquire; 3024 acquire_cb = acquire;
1513} 3025}
1514#endif 3026#endif
1515 3027
1516/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
1517static void noinline 3029ecb_noinline ecb_cold
3030static void
1518loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1519{ 3032{
1520 if (!backend) 3033 if (!backend)
1521 { 3034 {
3035 origflags = flags;
3036
1522#if EV_USE_REALTIME 3037#if EV_USE_REALTIME
1523 if (!have_realtime) 3038 if (!have_realtime)
1524 { 3039 {
1525 struct timespec ts; 3040 struct timespec ts;
1526 3041
… …
1548 if (!(flags & EVFLAG_NOENV) 3063 if (!(flags & EVFLAG_NOENV)
1549 && !enable_secure () 3064 && !enable_secure ()
1550 && getenv ("LIBEV_FLAGS")) 3065 && getenv ("LIBEV_FLAGS"))
1551 flags = atoi (getenv ("LIBEV_FLAGS")); 3066 flags = atoi (getenv ("LIBEV_FLAGS"));
1552 3067
1553 ev_rt_now = ev_time (); 3068 ev_rt_now = ev_time ();
1554 mn_now = get_clock (); 3069 mn_now = get_clock ();
1555 now_floor = mn_now; 3070 now_floor = mn_now;
1556 rtmn_diff = ev_rt_now - mn_now; 3071 rtmn_diff = ev_rt_now - mn_now;
1557#if EV_MINIMAL < 2 3072#if EV_FEATURE_API
1558 invoke_cb = ev_invoke_pending; 3073 invoke_cb = ev_invoke_pending;
1559#endif 3074#endif
1560 3075
1561 io_blocktime = 0.; 3076 io_blocktime = 0.;
1562 timeout_blocktime = 0.; 3077 timeout_blocktime = 0.;
1563 backend = 0; 3078 backend = 0;
1564 backend_fd = -1; 3079 backend_fd = -1;
1565 gotasync = 0; 3080 sig_pending = 0;
3081#if EV_ASYNC_ENABLE
3082 async_pending = 0;
3083#endif
3084 pipe_write_skipped = 0;
3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
1566#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
1567 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1568#endif 3090#endif
1569#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
1570 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1571#endif 3093#endif
1572 3094
1573 if (!(flags & 0x0000ffffU)) 3095 if (!(flags & EVBACKEND_MASK))
1574 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
1575 3097
3098#if EV_USE_IOCP
3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3100#endif
1576#if EV_USE_PORT 3101#if EV_USE_PORT
1577 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1578#endif 3103#endif
1579#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
1580 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);
1581#endif 3112#endif
1582#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
1583 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1584#endif 3115#endif
1585#if EV_USE_POLL 3116#if EV_USE_POLL
1586 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1587#endif 3118#endif
1588#if EV_USE_SELECT 3119#if EV_USE_SELECT
1589 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1590#endif 3121#endif
1591 3122
1592 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
1593 3124
3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1594 ev_init (&pipe_w, pipecb); 3126 ev_init (&pipe_w, pipecb);
1595 ev_set_priority (&pipe_w, EV_MAXPRI); 3127 ev_set_priority (&pipe_w, EV_MAXPRI);
3128#endif
1596 } 3129 }
1597} 3130}
1598 3131
1599/* free up a loop structure */ 3132/* free up a loop structure */
1600static void noinline 3133ecb_cold
3134void
1601loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
1602{ 3136{
1603 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
1604 3161
1605 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
1606 { 3163 {
1607 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
1608 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
1609 3166
1610#if EV_USE_EVENTFD 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1611 if (evfd >= 0) 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1612 close (evfd);
1613#endif
1614
1615 if (evpipe [0] >= 0)
1616 {
1617 close (evpipe [0]);
1618 close (evpipe [1]);
1619 }
1620 } 3169 }
1621 3170
1622#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
1623 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
1624 {
1625 /*ev_ref (EV_A);*/
1626 /*ev_io_stop (EV_A_ &sigfd_w);*/
1627
1628 close (sigfd); 3173 close (sigfd);
1629 }
1630#endif 3174#endif
1631 3175
1632#if EV_USE_INOTIFY 3176#if EV_USE_INOTIFY
1633 if (fs_fd >= 0) 3177 if (fs_fd >= 0)
1634 close (fs_fd); 3178 close (fs_fd);
1635#endif 3179#endif
1636 3180
1637 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
1638 close (backend_fd); 3182 close (backend_fd);
1639 3183
3184#if EV_USE_IOCP
3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3186#endif
1640#if EV_USE_PORT 3187#if EV_USE_PORT
1641 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1642#endif 3189#endif
1643#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
1644 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);
1645#endif 3198#endif
1646#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
1647 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1648#endif 3201#endif
1649#if EV_USE_POLL 3202#if EV_USE_POLL
1650 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1651#endif 3204#endif
1652#if EV_USE_SELECT 3205#if EV_USE_SELECT
1653 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1654#endif 3207#endif
1655 3208
1656 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
1657 { 3210 {
1658 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
1671 array_free (periodic, EMPTY); 3224 array_free (periodic, EMPTY);
1672#endif 3225#endif
1673#if EV_FORK_ENABLE 3226#if EV_FORK_ENABLE
1674 array_free (fork, EMPTY); 3227 array_free (fork, EMPTY);
1675#endif 3228#endif
3229#if EV_CLEANUP_ENABLE
3230 array_free (cleanup, EMPTY);
3231#endif
1676 array_free (prepare, EMPTY); 3232 array_free (prepare, EMPTY);
1677 array_free (check, EMPTY); 3233 array_free (check, EMPTY);
1678#if EV_ASYNC_ENABLE 3234#if EV_ASYNC_ENABLE
1679 array_free (async, EMPTY); 3235 array_free (async, EMPTY);
1680#endif 3236#endif
1681 3237
1682 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
1683} 3248}
1684 3249
1685#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1686inline_size void infy_fork (EV_P); 3251inline_size void infy_fork (EV_P);
1687#endif 3252#endif
1688 3253
1689inline_size void 3254inline_size void
1690loop_fork (EV_P) 3255loop_fork (EV_P)
1691{ 3256{
1692#if EV_USE_PORT 3257#if EV_USE_PORT
1693 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1694#endif 3259#endif
1695#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
1696 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);
1697#endif 3268#endif
1698#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
1699 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1700#endif 3271#endif
1701#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
1702 infy_fork (EV_A); 3273 infy_fork (EV_A);
1703#endif 3274#endif
1704 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1705 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
1706 { 3278 {
1707 /* this "locks" the handlers against writing to the pipe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1708 /* while we modify the fd vars */
1709 gotsig = 1;
1710#if EV_ASYNC_ENABLE
1711 gotasync = 1;
1712#endif
1713 3280
1714 ev_ref (EV_A); 3281 ev_ref (EV_A);
1715 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
1716 3283
1717#if EV_USE_EVENTFD
1718 if (evfd >= 0)
1719 close (evfd);
1720#endif
1721
1722 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
1723 { 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
1724 close (evpipe [0]);
1725 close (evpipe [1]);
1726 }
1727 3286
1728 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
1729 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
1730 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1731 } 3290 }
3291#endif
1732 3292
1733 postfork = 0; 3293 postfork = 0;
1734} 3294}
1735 3295
1736#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
1737 3297
3298ecb_cold
1738struct ev_loop * 3299struct ev_loop *
1739ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
1740{ 3301{
1741 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1742 3303
1743 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
1744 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
1745 3306
1746 if (ev_backend (EV_A)) 3307 if (ev_backend (EV_A))
1747 return EV_A; 3308 return EV_A;
1748 3309
3310 ev_free (EV_A);
1749 return 0; 3311 return 0;
1750} 3312}
1751 3313
1752void
1753ev_loop_destroy (EV_P)
1754{
1755 loop_destroy (EV_A);
1756 ev_free (loop);
1757}
1758
1759void
1760ev_loop_fork (EV_P)
1761{
1762 postfork = 1; /* must be in line with ev_default_fork */
1763}
1764#endif /* multiplicity */ 3314#endif /* multiplicity */
1765 3315
1766#if EV_VERIFY 3316#if EV_VERIFY
1767static void noinline 3317ecb_noinline ecb_cold
3318static void
1768verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
1769{ 3320{
1770 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));
1771 3322
1772 if (w->pending) 3323 if (w->pending)
1773 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));
1774} 3325}
1775 3326
1776static void noinline 3327ecb_noinline ecb_cold
3328static void
1777verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
1778{ 3330{
1779 int i; 3331 int i;
1780 3332
1781 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1786 3338
1787 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1788 } 3340 }
1789} 3341}
1790 3342
1791static void noinline 3343ecb_noinline ecb_cold
3344static void
1792array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
1793{ 3346{
1794 while (cnt--) 3347 while (cnt--)
1795 { 3348 {
1796 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1797 verify_watcher (EV_A_ ws [cnt]); 3350 verify_watcher (EV_A_ ws [cnt]);
1798 } 3351 }
1799} 3352}
1800#endif 3353#endif
1801 3354
1802#if EV_MINIMAL < 2 3355#if EV_FEATURE_API
1803void 3356void ecb_cold
1804ev_loop_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
1805{ 3358{
1806#if EV_VERIFY 3359#if EV_VERIFY
1807 int i; 3360 int i;
1808 WL w; 3361 WL w, w2;
1809 3362
1810 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
1811 3364
1812 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
1813 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
1814 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1815 3368
1816 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
1817 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
1818 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
1819 { 3375 {
1820 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
1821 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));
1822 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));
1823 } 3386 }
3387 }
1824 3388
1825 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
1826 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
1827 3391
1828#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
1843#if EV_FORK_ENABLE 3407#if EV_FORK_ENABLE
1844 assert (forkmax >= forkcnt); 3408 assert (forkmax >= forkcnt);
1845 array_verify (EV_A_ (W *)forks, forkcnt); 3409 array_verify (EV_A_ (W *)forks, forkcnt);
1846#endif 3410#endif
1847 3411
3412#if EV_CLEANUP_ENABLE
3413 assert (cleanupmax >= cleanupcnt);
3414 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3415#endif
3416
1848#if EV_ASYNC_ENABLE 3417#if EV_ASYNC_ENABLE
1849 assert (asyncmax >= asynccnt); 3418 assert (asyncmax >= asynccnt);
1850 array_verify (EV_A_ (W *)asyncs, asynccnt); 3419 array_verify (EV_A_ (W *)asyncs, asynccnt);
1851#endif 3420#endif
1852 3421
3422#if EV_PREPARE_ENABLE
1853 assert (preparemax >= preparecnt); 3423 assert (preparemax >= preparecnt);
1854 array_verify (EV_A_ (W *)prepares, preparecnt); 3424 array_verify (EV_A_ (W *)prepares, preparecnt);
3425#endif
1855 3426
3427#if EV_CHECK_ENABLE
1856 assert (checkmax >= checkcnt); 3428 assert (checkmax >= checkcnt);
1857 array_verify (EV_A_ (W *)checks, checkcnt); 3429 array_verify (EV_A_ (W *)checks, checkcnt);
3430#endif
1858 3431
1859# if 0 3432# if 0
3433#if EV_CHILD_ENABLE
1860 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)
1861 for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig) 3435 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3436#endif
1862# endif 3437# endif
1863#endif 3438#endif
1864} 3439}
1865#endif 3440#endif
1866 3441
1867#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
1868struct ev_loop * 3444struct ev_loop *
1869ev_default_loop_init (unsigned int flags)
1870#else 3445#else
1871int 3446int
3447#endif
1872ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
1873#endif
1874{ 3449{
1875 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
1876 { 3451 {
1877#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
1878 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1882 3457
1883 loop_init (EV_A_ flags); 3458 loop_init (EV_A_ flags);
1884 3459
1885 if (ev_backend (EV_A)) 3460 if (ev_backend (EV_A))
1886 { 3461 {
1887#ifndef _WIN32 3462#if EV_CHILD_ENABLE
1888 ev_signal_init (&childev, childcb, SIGCHLD); 3463 ev_signal_init (&childev, childcb, SIGCHLD);
1889 ev_set_priority (&childev, EV_MAXPRI); 3464 ev_set_priority (&childev, EV_MAXPRI);
1890 ev_signal_start (EV_A_ &childev); 3465 ev_signal_start (EV_A_ &childev);
1891 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3466 ev_unref (EV_A); /* child watcher should not keep loop alive */
1892#endif 3467#endif
… …
1897 3472
1898 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
1899} 3474}
1900 3475
1901void 3476void
1902ev_default_destroy (void) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
1903{ 3478{
1904#if EV_MULTIPLICITY 3479 postfork = 1;
1905 EV_P = ev_default_loop_ptr;
1906#endif
1907
1908 ev_default_loop_ptr = 0;
1909
1910#ifndef _WIN32
1911 ev_ref (EV_A); /* child watcher */
1912 ev_signal_stop (EV_A_ &childev);
1913#endif
1914
1915 loop_destroy (EV_A);
1916}
1917
1918void
1919ev_default_fork (void)
1920{
1921#if EV_MULTIPLICITY
1922 EV_P = ev_default_loop_ptr;
1923#endif
1924
1925 postfork = 1; /* must be in line with ev_loop_fork */
1926} 3480}
1927 3481
1928/*****************************************************************************/ 3482/*****************************************************************************/
1929 3483
1930void 3484void
… …
1932{ 3486{
1933 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
1934} 3488}
1935 3489
1936unsigned int 3490unsigned int
1937ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
1938{ 3492{
1939 int pri; 3493 int pri;
1940 unsigned int count = 0; 3494 unsigned int count = 0;
1941 3495
1942 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
1943 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
1944 3498
1945 return count; 3499 return count;
1946} 3500}
1947 3501
1948void noinline 3502ecb_noinline
3503void
1949ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
1950{ 3505{
1951 int pri; 3506 pendingpri = NUMPRI;
1952 3507
1953 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
1954 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
1955 { 3514 {
1956 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1957 3516
1958 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1959 /* ^ this is no longer true, as pending_w could be here */
1960
1961 p->w->pending = 0; 3517 p->w->pending = 0;
1962 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
1963 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
1964 } 3520 }
3521 }
3522 while (pendingpri);
1965} 3523}
1966 3524
1967#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
1968/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
1969/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
1970inline_size void 3528inline_size void
1971idle_reify (EV_P) 3529idle_reify (EV_P)
1972{ 3530{
1973 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
1974 { 3532 {
1975 int pri; 3533 int pri;
1976 3534
1977 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
1978 { 3536 {
… …
2008 { 3566 {
2009 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2010 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2011 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2012 3570
2013 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.)));
2014 3572
2015 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2016 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2017 } 3575 }
2018 else 3576 else
… …
2021 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2022 feed_reverse (EV_A_ (W)w); 3580 feed_reverse (EV_A_ (W)w);
2023 } 3581 }
2024 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3582 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2025 3583
2026 feed_reverse_done (EV_A_ EV_TIMEOUT); 3584 feed_reverse_done (EV_A_ EV_TIMER);
2027 } 3585 }
2028} 3586}
2029 3587
2030#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
2031/* make periodics pending */ 3615/* make periodics pending */
2032inline_size void 3616inline_size void
2033periodics_reify (EV_P) 3617periodics_reify (EV_P)
2034{ 3618{
2035 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2036 3620
2037 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2038 { 3622 {
2039 int feed_count = 0;
2040
2041 do 3623 do
2042 { 3624 {
2043 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2044 3626
2045 /*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)));*/
… …
2054 ANHE_at_cache (periodics [HEAP0]); 3636 ANHE_at_cache (periodics [HEAP0]);
2055 downheap (periodics, periodiccnt, HEAP0); 3637 downheap (periodics, periodiccnt, HEAP0);
2056 } 3638 }
2057 else if (w->interval) 3639 else if (w->interval)
2058 { 3640 {
2059 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3641 periodic_recalc (EV_A_ w);
2060 /* if next trigger time is not sufficiently in the future, put it there */
2061 /* this might happen because of floating point inexactness */
2062 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2063 {
2064 ev_at (w) += w->interval;
2065
2066 /* if interval is unreasonably low we might still have a time in the past */
2067 /* so correct this. this will make the periodic very inexact, but the user */
2068 /* has effectively asked to get triggered more often than possible */
2069 if (ev_at (w) < ev_rt_now)
2070 ev_at (w) = ev_rt_now;
2071 }
2072
2073 ANHE_at_cache (periodics [HEAP0]); 3642 ANHE_at_cache (periodics [HEAP0]);
2074 downheap (periodics, periodiccnt, HEAP0); 3643 downheap (periodics, periodiccnt, HEAP0);
2075 } 3644 }
2076 else 3645 else
2077 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3646 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2084 feed_reverse_done (EV_A_ EV_PERIODIC); 3653 feed_reverse_done (EV_A_ EV_PERIODIC);
2085 } 3654 }
2086} 3655}
2087 3656
2088/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2089/* 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? */
2090static void noinline 3659ecb_noinline ecb_cold
3660static void
2091periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2092{ 3662{
2093 int i; 3663 int i;
2094 3664
2095 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2098 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3668 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2099 3669
2100 if (w->reschedule_cb) 3670 if (w->reschedule_cb)
2101 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3671 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2102 else if (w->interval) 3672 else if (w->interval)
2103 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3673 periodic_recalc (EV_A_ w);
2104 3674
2105 ANHE_at_cache (periodics [i]); 3675 ANHE_at_cache (periodics [i]);
2106 } 3676 }
2107 3677
2108 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2109} 3679}
2110#endif 3680#endif
2111 3681
2112/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2113static void noinline 3683ecb_noinline ecb_cold
3684static void
2114timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2115{ 3686{
2116 int i; 3687 int i;
2117 3688
2118 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2122 ANHE_at_cache (*he); 3693 ANHE_at_cache (*he);
2123 } 3694 }
2124} 3695}
2125 3696
2126/* fetch new monotonic and realtime times from the kernel */ 3697/* fetch new monotonic and realtime times from the kernel */
2127/* also detetc if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2128inline_speed void 3699inline_speed void
2129time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2130{ 3701{
2131#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2132 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2133 { 3704 {
2134 int i; 3705 int i;
2135 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2136 3707
2137 mn_now = get_clock (); 3708 mn_now = get_clock ();
2138 3709
2139 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2140 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2141 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)))
2142 { 3713 {
2143 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2144 return; 3715 return;
2145 } 3716 }
2146 3717
… …
2155 * 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
2156 * in the unlikely event of having been preempted here. 3727 * in the unlikely event of having been preempted here.
2157 */ 3728 */
2158 for (i = 4; --i; ) 3729 for (i = 4; --i; )
2159 { 3730 {
3731 ev_tstamp diff;
2160 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2161 3733
2162 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)))
2163 return; /* all is well */ 3737 return; /* all is well */
2164 3738
2165 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2166 mn_now = get_clock (); 3740 mn_now = get_clock ();
2167 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2176 else 3750 else
2177#endif 3751#endif
2178 { 3752 {
2179 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2180 3754
2181 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)))
2182 { 3756 {
2183 /* 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 */
2184 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2185#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2186 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2189 3763
2190 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2191 } 3765 }
2192} 3766}
2193 3767
2194void 3768int
2195ev_loop (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2196{ 3770{
2197#if EV_MINIMAL < 2 3771#if EV_FEATURE_API
2198 ++loop_depth; 3772 ++loop_depth;
2199#endif 3773#endif
2200 3774
2201 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));
2202 3776
2203 loop_done = EVUNLOOP_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2204 3778
2205 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 */
2206 3780
2207 do 3781 do
2208 { 3782 {
2209#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2210 ev_loop_verify (EV_A); 3784 ev_verify (EV_A);
2211#endif 3785#endif
2212 3786
2213#ifndef _WIN32 3787#ifndef _WIN32
2214 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2215 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2216 { 3790 {
2217 curpid = getpid (); 3791 curpid = getpid ();
2218 postfork = 1; 3792 postfork = 1;
2219 } 3793 }
2220#endif 3794#endif
2221 3795
2222#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2223 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2224 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2225 if (forkcnt) 3799 if (forkcnt)
2226 { 3800 {
2227 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2228 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2229 } 3803 }
2230#endif 3804#endif
2231 3805
3806#if EV_PREPARE_ENABLE
2232 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2233 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2234 { 3809 {
2235 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2236 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2237 } 3812 }
3813#endif
2238 3814
2239 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2240 break; 3816 break;
2241 3817
2242 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2243 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2244 loop_fork (EV_A); 3820 loop_fork (EV_A);
2245 3821
2246 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2247 fd_reify (EV_A); 3823 fd_reify (EV_A);
2248 3824
2249 /* calculate blocking time */ 3825 /* calculate blocking time */
2250 { 3826 {
2251 ev_tstamp waittime = 0.; 3827 ev_tstamp waittime = 0.;
2252 ev_tstamp sleeptime = 0.; 3828 ev_tstamp sleeptime = 0.;
2253 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
2254 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2255 { 3842 {
2256 /* remember old timestamp for io_blocktime calculation */
2257 ev_tstamp prev_mn_now = mn_now;
2258
2259 /* update time to cancel out callback processing overhead */
2260 time_update (EV_A_ 1e100);
2261
2262 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2263 3844
2264 if (timercnt) 3845 if (timercnt)
2265 { 3846 {
2266 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2267 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
2268 } 3849 }
2269 3850
2270#if EV_PERIODIC_ENABLE 3851#if EV_PERIODIC_ENABLE
2271 if (periodiccnt) 3852 if (periodiccnt)
2272 { 3853 {
2273 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3854 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2274 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2275 } 3856 }
2276#endif 3857#endif
2277 3858
2278 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2279 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2280 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2281 3862
3863 /* at this point, we NEED to wait, so we have to ensure */
3864 /* to pass a minimum nonzero value to the backend */
3865 if (ecb_expect_false (waittime < backend_mintime))
3866 waittime = backend_mintime;
3867
2282 /* extra check because io_blocktime is commonly 0 */ 3868 /* extra check because io_blocktime is commonly 0 */
2283 if (expect_false (io_blocktime)) 3869 if (ecb_expect_false (io_blocktime))
2284 { 3870 {
2285 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3871 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2286 3872
2287 if (sleeptime > waittime - backend_fudge) 3873 if (sleeptime > waittime - backend_mintime)
2288 sleeptime = waittime - backend_fudge; 3874 sleeptime = waittime - backend_mintime;
2289 3875
2290 if (expect_true (sleeptime > 0.)) 3876 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2291 { 3877 {
2292 ev_sleep (sleeptime); 3878 ev_sleep (sleeptime);
2293 waittime -= sleeptime; 3879 waittime -= sleeptime;
2294 } 3880 }
2295 } 3881 }
2296 } 3882 }
2297 3883
2298#if EV_MINIMAL < 2 3884#if EV_FEATURE_API
2299 ++loop_count; 3885 ++loop_count;
2300#endif 3886#endif
2301 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3887 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2302 backend_poll (EV_A_ waittime); 3888 backend_poll (EV_A_ waittime);
2303 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3889 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3890
3891 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3892
3893 ECB_MEMORY_FENCE_ACQUIRE;
3894 if (pipe_write_skipped)
3895 {
3896 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3897 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3898 }
2304 3899
2305 /* update ev_rt_now, do magic */ 3900 /* update ev_rt_now, do magic */
2306 time_update (EV_A_ waittime + sleeptime); 3901 time_update (EV_A_ waittime + sleeptime);
2307 } 3902 }
2308 3903
… …
2315#if EV_IDLE_ENABLE 3910#if EV_IDLE_ENABLE
2316 /* queue idle watchers unless other events are pending */ 3911 /* queue idle watchers unless other events are pending */
2317 idle_reify (EV_A); 3912 idle_reify (EV_A);
2318#endif 3913#endif
2319 3914
3915#if EV_CHECK_ENABLE
2320 /* queue check watchers, to be executed first */ 3916 /* queue check watchers, to be executed first */
2321 if (expect_false (checkcnt)) 3917 if (ecb_expect_false (checkcnt))
2322 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3918 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3919#endif
2323 3920
2324 EV_INVOKE_PENDING; 3921 EV_INVOKE_PENDING;
2325 } 3922 }
2326 while (expect_true ( 3923 while (ecb_expect_true (
2327 activecnt 3924 activecnt
2328 && !loop_done 3925 && !loop_done
2329 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3926 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2330 )); 3927 ));
2331 3928
2332 if (loop_done == EVUNLOOP_ONE) 3929 if (loop_done == EVBREAK_ONE)
2333 loop_done = EVUNLOOP_CANCEL; 3930 loop_done = EVBREAK_CANCEL;
2334 3931
2335#if EV_MINIMAL < 2 3932#if EV_FEATURE_API
2336 --loop_depth; 3933 --loop_depth;
2337#endif 3934#endif
2338}
2339 3935
3936 return activecnt;
3937}
3938
2340void 3939void
2341ev_unloop (EV_P_ int how) 3940ev_break (EV_P_ int how) EV_NOEXCEPT
2342{ 3941{
2343 loop_done = how; 3942 loop_done = how;
2344} 3943}
2345 3944
2346void 3945void
2347ev_ref (EV_P) 3946ev_ref (EV_P) EV_NOEXCEPT
2348{ 3947{
2349 ++activecnt; 3948 ++activecnt;
2350} 3949}
2351 3950
2352void 3951void
2353ev_unref (EV_P) 3952ev_unref (EV_P) EV_NOEXCEPT
2354{ 3953{
2355 --activecnt; 3954 --activecnt;
2356} 3955}
2357 3956
2358void 3957void
2359ev_now_update (EV_P) 3958ev_now_update (EV_P) EV_NOEXCEPT
2360{ 3959{
2361 time_update (EV_A_ 1e100); 3960 time_update (EV_A_ EV_TSTAMP_HUGE);
2362} 3961}
2363 3962
2364void 3963void
2365ev_suspend (EV_P) 3964ev_suspend (EV_P) EV_NOEXCEPT
2366{ 3965{
2367 ev_now_update (EV_A); 3966 ev_now_update (EV_A);
2368} 3967}
2369 3968
2370void 3969void
2371ev_resume (EV_P) 3970ev_resume (EV_P) EV_NOEXCEPT
2372{ 3971{
2373 ev_tstamp mn_prev = mn_now; 3972 ev_tstamp mn_prev = mn_now;
2374 3973
2375 ev_now_update (EV_A); 3974 ev_now_update (EV_A);
2376 timers_reschedule (EV_A_ mn_now - mn_prev); 3975 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2393inline_size void 3992inline_size void
2394wlist_del (WL *head, WL elem) 3993wlist_del (WL *head, WL elem)
2395{ 3994{
2396 while (*head) 3995 while (*head)
2397 { 3996 {
2398 if (*head == elem) 3997 if (ecb_expect_true (*head == elem))
2399 { 3998 {
2400 *head = elem->next; 3999 *head = elem->next;
2401 return; 4000 break;
2402 } 4001 }
2403 4002
2404 head = &(*head)->next; 4003 head = &(*head)->next;
2405 } 4004 }
2406} 4005}
… …
2415 w->pending = 0; 4014 w->pending = 0;
2416 } 4015 }
2417} 4016}
2418 4017
2419int 4018int
2420ev_clear_pending (EV_P_ void *w) 4019ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2421{ 4020{
2422 W w_ = (W)w; 4021 W w_ = (W)w;
2423 int pending = w_->pending; 4022 int pending = w_->pending;
2424 4023
2425 if (expect_true (pending)) 4024 if (ecb_expect_true (pending))
2426 { 4025 {
2427 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2428 p->w = (W)&pending_w; 4027 p->w = (W)&pending_w;
2429 w_->pending = 0; 4028 w_->pending = 0;
2430 return p->events; 4029 return p->events;
… …
2457 w->active = 0; 4056 w->active = 0;
2458} 4057}
2459 4058
2460/*****************************************************************************/ 4059/*****************************************************************************/
2461 4060
2462void noinline 4061ecb_noinline
4062void
2463ev_io_start (EV_P_ ev_io *w) 4063ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2464{ 4064{
2465 int fd = w->fd; 4065 int fd = w->fd;
2466 4066
2467 if (expect_false (ev_is_active (w))) 4067 if (ecb_expect_false (ev_is_active (w)))
2468 return; 4068 return;
2469 4069
2470 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4070 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2471 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4071 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2472 4072
4073#if EV_VERIFY >= 2
4074 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4075#endif
2473 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
2474 4077
2475 ev_start (EV_A_ (W)w, 1); 4078 ev_start (EV_A_ (W)w, 1);
2476 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4079 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2477 wlist_add (&anfds[fd].head, (WL)w); 4080 wlist_add (&anfds[fd].head, (WL)w);
4081
4082 /* common bug, apparently */
4083 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2478 4084
2479 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4085 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2480 w->events &= ~EV__IOFDSET; 4086 w->events &= ~EV__IOFDSET;
2481 4087
2482 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
2483} 4089}
2484 4090
2485void noinline 4091ecb_noinline
4092void
2486ev_io_stop (EV_P_ ev_io *w) 4093ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2487{ 4094{
2488 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
2489 if (expect_false (!ev_is_active (w))) 4096 if (ecb_expect_false (!ev_is_active (w)))
2490 return; 4097 return;
2491 4098
2492 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4099 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2493 4100
4101#if EV_VERIFY >= 2
4102 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4103#endif
2494 EV_FREQUENT_CHECK; 4104 EV_FREQUENT_CHECK;
2495 4105
2496 wlist_del (&anfds[w->fd].head, (WL)w); 4106 wlist_del (&anfds[w->fd].head, (WL)w);
2497 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
2498 4108
2499 fd_change (EV_A_ w->fd, 1); 4109 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2500 4110
2501 EV_FREQUENT_CHECK; 4111 EV_FREQUENT_CHECK;
2502} 4112}
2503 4113
2504void noinline 4114ecb_noinline
4115void
2505ev_timer_start (EV_P_ ev_timer *w) 4116ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2506{ 4117{
2507 if (expect_false (ev_is_active (w))) 4118 if (ecb_expect_false (ev_is_active (w)))
2508 return; 4119 return;
2509 4120
2510 ev_at (w) += mn_now; 4121 ev_at (w) += mn_now;
2511 4122
2512 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4123 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2513 4124
2514 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2515 4126
2516 ++timercnt; 4127 ++timercnt;
2517 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4128 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2518 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4129 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2519 ANHE_w (timers [ev_active (w)]) = (WT)w; 4130 ANHE_w (timers [ev_active (w)]) = (WT)w;
2520 ANHE_at_cache (timers [ev_active (w)]); 4131 ANHE_at_cache (timers [ev_active (w)]);
2521 upheap (timers, ev_active (w)); 4132 upheap (timers, ev_active (w));
2522 4133
2523 EV_FREQUENT_CHECK; 4134 EV_FREQUENT_CHECK;
2524 4135
2525 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4136 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2526} 4137}
2527 4138
2528void noinline 4139ecb_noinline
4140void
2529ev_timer_stop (EV_P_ ev_timer *w) 4141ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2530{ 4142{
2531 clear_pending (EV_A_ (W)w); 4143 clear_pending (EV_A_ (W)w);
2532 if (expect_false (!ev_is_active (w))) 4144 if (ecb_expect_false (!ev_is_active (w)))
2533 return; 4145 return;
2534 4146
2535 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
2536 4148
2537 { 4149 {
… …
2539 4151
2540 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4152 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2541 4153
2542 --timercnt; 4154 --timercnt;
2543 4155
2544 if (expect_true (active < timercnt + HEAP0)) 4156 if (ecb_expect_true (active < timercnt + HEAP0))
2545 { 4157 {
2546 timers [active] = timers [timercnt + HEAP0]; 4158 timers [active] = timers [timercnt + HEAP0];
2547 adjustheap (timers, timercnt, active); 4159 adjustheap (timers, timercnt, active);
2548 } 4160 }
2549 } 4161 }
2550 4162
2551 EV_FREQUENT_CHECK;
2552
2553 ev_at (w) -= mn_now; 4163 ev_at (w) -= mn_now;
2554 4164
2555 ev_stop (EV_A_ (W)w); 4165 ev_stop (EV_A_ (W)w);
2556}
2557 4166
2558void noinline 4167 EV_FREQUENT_CHECK;
4168}
4169
4170ecb_noinline
4171void
2559ev_timer_again (EV_P_ ev_timer *w) 4172ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2560{ 4173{
2561 EV_FREQUENT_CHECK; 4174 EV_FREQUENT_CHECK;
4175
4176 clear_pending (EV_A_ (W)w);
2562 4177
2563 if (ev_is_active (w)) 4178 if (ev_is_active (w))
2564 { 4179 {
2565 if (w->repeat) 4180 if (w->repeat)
2566 { 4181 {
… …
2579 4194
2580 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
2581} 4196}
2582 4197
2583ev_tstamp 4198ev_tstamp
2584ev_timer_remaining (EV_P_ ev_timer *w) 4199ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2585{ 4200{
2586 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4201 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2587} 4202}
2588 4203
2589#if EV_PERIODIC_ENABLE 4204#if EV_PERIODIC_ENABLE
2590void noinline 4205ecb_noinline
4206void
2591ev_periodic_start (EV_P_ ev_periodic *w) 4207ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2592{ 4208{
2593 if (expect_false (ev_is_active (w))) 4209 if (ecb_expect_false (ev_is_active (w)))
2594 return; 4210 return;
2595 4211
2596 if (w->reschedule_cb) 4212 if (w->reschedule_cb)
2597 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4213 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2598 else if (w->interval) 4214 else if (w->interval)
2599 { 4215 {
2600 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4216 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2601 /* this formula differs from the one in periodic_reify because we do not always round up */ 4217 periodic_recalc (EV_A_ w);
2602 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2603 } 4218 }
2604 else 4219 else
2605 ev_at (w) = w->offset; 4220 ev_at (w) = w->offset;
2606 4221
2607 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2608 4223
2609 ++periodiccnt; 4224 ++periodiccnt;
2610 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4225 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2611 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4226 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2612 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4227 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2613 ANHE_at_cache (periodics [ev_active (w)]); 4228 ANHE_at_cache (periodics [ev_active (w)]);
2614 upheap (periodics, ev_active (w)); 4229 upheap (periodics, ev_active (w));
2615 4230
2616 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
2617 4232
2618 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4233 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2619} 4234}
2620 4235
2621void noinline 4236ecb_noinline
4237void
2622ev_periodic_stop (EV_P_ ev_periodic *w) 4238ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2623{ 4239{
2624 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
2625 if (expect_false (!ev_is_active (w))) 4241 if (ecb_expect_false (!ev_is_active (w)))
2626 return; 4242 return;
2627 4243
2628 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
2629 4245
2630 { 4246 {
… …
2632 4248
2633 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4249 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2634 4250
2635 --periodiccnt; 4251 --periodiccnt;
2636 4252
2637 if (expect_true (active < periodiccnt + HEAP0)) 4253 if (ecb_expect_true (active < periodiccnt + HEAP0))
2638 { 4254 {
2639 periodics [active] = periodics [periodiccnt + HEAP0]; 4255 periodics [active] = periodics [periodiccnt + HEAP0];
2640 adjustheap (periodics, periodiccnt, active); 4256 adjustheap (periodics, periodiccnt, active);
2641 } 4257 }
2642 } 4258 }
2643 4259
2644 EV_FREQUENT_CHECK;
2645
2646 ev_stop (EV_A_ (W)w); 4260 ev_stop (EV_A_ (W)w);
2647}
2648 4261
2649void noinline 4262 EV_FREQUENT_CHECK;
4263}
4264
4265ecb_noinline
4266void
2650ev_periodic_again (EV_P_ ev_periodic *w) 4267ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2651{ 4268{
2652 /* TODO: use adjustheap and recalculation */ 4269 /* TODO: use adjustheap and recalculation */
2653 ev_periodic_stop (EV_A_ w); 4270 ev_periodic_stop (EV_A_ w);
2654 ev_periodic_start (EV_A_ w); 4271 ev_periodic_start (EV_A_ w);
2655} 4272}
… …
2657 4274
2658#ifndef SA_RESTART 4275#ifndef SA_RESTART
2659# define SA_RESTART 0 4276# define SA_RESTART 0
2660#endif 4277#endif
2661 4278
2662void noinline 4279#if EV_SIGNAL_ENABLE
4280
4281ecb_noinline
4282void
2663ev_signal_start (EV_P_ ev_signal *w) 4283ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2664{ 4284{
2665 if (expect_false (ev_is_active (w))) 4285 if (ecb_expect_false (ev_is_active (w)))
2666 return; 4286 return;
2667 4287
2668 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4288 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2669 4289
2670#if EV_MULTIPLICITY 4290#if EV_MULTIPLICITY
2671 assert (("libev: tried to attach to a signal from two different loops", 4291 assert (("libev: a signal must not be attached to two different loops",
2672 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4292 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2673 4293
2674 signals [w->signum - 1].loop = EV_A; 4294 signals [w->signum - 1].loop = EV_A;
4295 ECB_MEMORY_FENCE_RELEASE;
2675#endif 4296#endif
2676 4297
2677 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
2678 4299
2679#if EV_USE_SIGNALFD 4300#if EV_USE_SIGNALFD
… …
2712 if (!((WL)w)->next) 4333 if (!((WL)w)->next)
2713# if EV_USE_SIGNALFD 4334# if EV_USE_SIGNALFD
2714 if (sigfd < 0) /*TODO*/ 4335 if (sigfd < 0) /*TODO*/
2715# endif 4336# endif
2716 { 4337 {
2717# if _WIN32 4338# ifdef _WIN32
4339 evpipe_init (EV_A);
4340
2718 signal (w->signum, ev_sighandler); 4341 signal (w->signum, ev_sighandler);
2719# else 4342# else
2720 struct sigaction sa; 4343 struct sigaction sa;
2721 4344
2722 evpipe_init (EV_A); 4345 evpipe_init (EV_A);
… …
2724 sa.sa_handler = ev_sighandler; 4347 sa.sa_handler = ev_sighandler;
2725 sigfillset (&sa.sa_mask); 4348 sigfillset (&sa.sa_mask);
2726 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4349 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2727 sigaction (w->signum, &sa, 0); 4350 sigaction (w->signum, &sa, 0);
2728 4351
4352 if (origflags & EVFLAG_NOSIGMASK)
4353 {
2729 sigemptyset (&sa.sa_mask); 4354 sigemptyset (&sa.sa_mask);
2730 sigaddset (&sa.sa_mask, w->signum); 4355 sigaddset (&sa.sa_mask, w->signum);
2731 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4356 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4357 }
2732#endif 4358#endif
2733 } 4359 }
2734 4360
2735 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
2736} 4362}
2737 4363
2738void noinline 4364ecb_noinline
4365void
2739ev_signal_stop (EV_P_ ev_signal *w) 4366ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2740{ 4367{
2741 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
2742 if (expect_false (!ev_is_active (w))) 4369 if (ecb_expect_false (!ev_is_active (w)))
2743 return; 4370 return;
2744 4371
2745 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
2746 4373
2747 wlist_del (&signals [w->signum - 1].head, (WL)w); 4374 wlist_del (&signals [w->signum - 1].head, (WL)w);
2748 ev_stop (EV_A_ (W)w); 4375 ev_stop (EV_A_ (W)w);
2749 4376
2750 if (!signals [w->signum - 1].head) 4377 if (!signals [w->signum - 1].head)
2751 { 4378 {
2752 #if EV_MULTIPLICITY 4379#if EV_MULTIPLICITY
2753 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4380 signals [w->signum - 1].loop = 0; /* unattach from signal */
2754 #endif 4381#endif
2755 #if EV_USE_SIGNALFD 4382#if EV_USE_SIGNALFD
2756 if (sigfd >= 0) 4383 if (sigfd >= 0)
2757 { 4384 {
2758 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4385 sigset_t ss;
4386
4387 sigemptyset (&ss);
4388 sigaddset (&ss, w->signum);
2759 sigdelset (&sigfd_set, w->signum); 4389 sigdelset (&sigfd_set, w->signum);
4390
2760 signalfd (sigfd, &sigfd_set, 0); 4391 signalfd (sigfd, &sigfd_set, 0);
2761 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4392 sigprocmask (SIG_UNBLOCK, &ss, 0);
2762 /*TODO: maybe unblock signal? */
2763 } 4393 }
2764 else 4394 else
2765 #endif 4395#endif
2766 signal (w->signum, SIG_DFL); 4396 signal (w->signum, SIG_DFL);
2767 } 4397 }
2768 4398
2769 EV_FREQUENT_CHECK; 4399 EV_FREQUENT_CHECK;
2770} 4400}
2771 4401
4402#endif
4403
4404#if EV_CHILD_ENABLE
4405
2772void 4406void
2773ev_child_start (EV_P_ ev_child *w) 4407ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2774{ 4408{
2775#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
2776 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4410 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2777#endif 4411#endif
2778 if (expect_false (ev_is_active (w))) 4412 if (ecb_expect_false (ev_is_active (w)))
2779 return; 4413 return;
2780 4414
2781 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
2782 4416
2783 ev_start (EV_A_ (W)w, 1); 4417 ev_start (EV_A_ (W)w, 1);
2784 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4418 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2785 4419
2786 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2787} 4421}
2788 4422
2789void 4423void
2790ev_child_stop (EV_P_ ev_child *w) 4424ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2791{ 4425{
2792 clear_pending (EV_A_ (W)w); 4426 clear_pending (EV_A_ (W)w);
2793 if (expect_false (!ev_is_active (w))) 4427 if (ecb_expect_false (!ev_is_active (w)))
2794 return; 4428 return;
2795 4429
2796 EV_FREQUENT_CHECK; 4430 EV_FREQUENT_CHECK;
2797 4431
2798 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4432 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2799 ev_stop (EV_A_ (W)w); 4433 ev_stop (EV_A_ (W)w);
2800 4434
2801 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
2802} 4436}
4437
4438#endif
2803 4439
2804#if EV_STAT_ENABLE 4440#if EV_STAT_ENABLE
2805 4441
2806# ifdef _WIN32 4442# ifdef _WIN32
2807# undef lstat 4443# undef lstat
… …
2810 4446
2811#define DEF_STAT_INTERVAL 5.0074891 4447#define DEF_STAT_INTERVAL 5.0074891
2812#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4448#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2813#define MIN_STAT_INTERVAL 0.1074891 4449#define MIN_STAT_INTERVAL 0.1074891
2814 4450
2815static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4451ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2816 4452
2817#if EV_USE_INOTIFY 4453#if EV_USE_INOTIFY
2818# define EV_INOTIFY_BUFSIZE 8192
2819 4454
2820static void noinline 4455/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4456# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4457
4458ecb_noinline
4459static void
2821infy_add (EV_P_ ev_stat *w) 4460infy_add (EV_P_ ev_stat *w)
2822{ 4461{
2823 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); 4462 w->wd = inotify_add_watch (fs_fd, w->path,
4463 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4464 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4465 | IN_DONT_FOLLOW | IN_MASK_ADD);
2824 4466
2825 if (w->wd < 0) 4467 if (w->wd >= 0)
4468 {
4469 struct statfs sfs;
4470
4471 /* now local changes will be tracked by inotify, but remote changes won't */
4472 /* unless the filesystem is known to be local, we therefore still poll */
4473 /* also do poll on <2.6.25, but with normal frequency */
4474
4475 if (!fs_2625)
4476 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4477 else if (!statfs (w->path, &sfs)
4478 && (sfs.f_type == 0x1373 /* devfs */
4479 || sfs.f_type == 0x4006 /* fat */
4480 || sfs.f_type == 0x4d44 /* msdos */
4481 || sfs.f_type == 0xEF53 /* ext2/3 */
4482 || sfs.f_type == 0x72b6 /* jffs2 */
4483 || sfs.f_type == 0x858458f6 /* ramfs */
4484 || sfs.f_type == 0x5346544e /* ntfs */
4485 || sfs.f_type == 0x3153464a /* jfs */
4486 || sfs.f_type == 0x9123683e /* btrfs */
4487 || sfs.f_type == 0x52654973 /* reiser3 */
4488 || sfs.f_type == 0x01021994 /* tmpfs */
4489 || sfs.f_type == 0x58465342 /* xfs */))
4490 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4491 else
4492 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2826 { 4493 }
4494 else
4495 {
4496 /* can't use inotify, continue to stat */
2827 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4497 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2828 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2829 4498
2830 /* monitor some parent directory for speedup hints */ 4499 /* if path is not there, monitor some parent directory for speedup hints */
2831 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4500 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2832 /* but an efficiency issue only */ 4501 /* but an efficiency issue only */
2833 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4502 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2834 { 4503 {
2835 char path [4096]; 4504 char path [4096];
… …
2845 if (!pend || pend == path) 4514 if (!pend || pend == path)
2846 break; 4515 break;
2847 4516
2848 *pend = 0; 4517 *pend = 0;
2849 w->wd = inotify_add_watch (fs_fd, path, mask); 4518 w->wd = inotify_add_watch (fs_fd, path, mask);
2850 } 4519 }
2851 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4520 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2852 } 4521 }
2853 } 4522 }
2854 4523
2855 if (w->wd >= 0) 4524 if (w->wd >= 0)
2856 {
2857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4525 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2858 4526
2859 /* now local changes will be tracked by inotify, but remote changes won't */ 4527 /* now re-arm timer, if required */
2860 /* unless the filesystem it known to be local, we therefore still poll */ 4528 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2861 /* also do poll on <2.6.25, but with normal frequency */
2862 struct statfs sfs;
2863
2864 if (fs_2625 && !statfs (w->path, &sfs))
2865 if (sfs.f_type == 0x1373 /* devfs */
2866 || sfs.f_type == 0xEF53 /* ext2/3 */
2867 || sfs.f_type == 0x3153464a /* jfs */
2868 || sfs.f_type == 0x52654973 /* reiser3 */
2869 || sfs.f_type == 0x01021994 /* tempfs */
2870 || sfs.f_type == 0x58465342 /* xfs */)
2871 return;
2872
2873 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2874 ev_timer_again (EV_A_ &w->timer); 4529 ev_timer_again (EV_A_ &w->timer);
2875 } 4530 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2876} 4531}
2877 4532
2878static void noinline 4533ecb_noinline
4534static void
2879infy_del (EV_P_ ev_stat *w) 4535infy_del (EV_P_ ev_stat *w)
2880{ 4536{
2881 int slot; 4537 int slot;
2882 int wd = w->wd; 4538 int wd = w->wd;
2883 4539
2884 if (wd < 0) 4540 if (wd < 0)
2885 return; 4541 return;
2886 4542
2887 w->wd = -2; 4543 w->wd = -2;
2888 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4544 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2889 wlist_del (&fs_hash [slot].head, (WL)w); 4545 wlist_del (&fs_hash [slot].head, (WL)w);
2890 4546
2891 /* remove this watcher, if others are watching it, they will rearm */ 4547 /* remove this watcher, if others are watching it, they will rearm */
2892 inotify_rm_watch (fs_fd, wd); 4548 inotify_rm_watch (fs_fd, wd);
2893} 4549}
2894 4550
2895static void noinline 4551ecb_noinline
4552static void
2896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4553infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2897{ 4554{
2898 if (slot < 0) 4555 if (slot < 0)
2899 /* overflow, need to check for all hash slots */ 4556 /* overflow, need to check for all hash slots */
2900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4557 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2901 infy_wd (EV_A_ slot, wd, ev); 4558 infy_wd (EV_A_ slot, wd, ev);
2902 else 4559 else
2903 { 4560 {
2904 WL w_; 4561 WL w_;
2905 4562
2906 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4563 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2907 { 4564 {
2908 ev_stat *w = (ev_stat *)w_; 4565 ev_stat *w = (ev_stat *)w_;
2909 w_ = w_->next; /* lets us remove this watcher and all before it */ 4566 w_ = w_->next; /* lets us remove this watcher and all before it */
2910 4567
2911 if (w->wd == wd || wd == -1) 4568 if (w->wd == wd || wd == -1)
2912 { 4569 {
2913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4570 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2914 { 4571 {
2915 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4572 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2916 w->wd = -1; 4573 w->wd = -1;
2917 infy_add (EV_A_ w); /* re-add, no matter what */ 4574 infy_add (EV_A_ w); /* re-add, no matter what */
2918 } 4575 }
2919 4576
2920 stat_timer_cb (EV_A_ &w->timer, 0); 4577 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2925 4582
2926static void 4583static void
2927infy_cb (EV_P_ ev_io *w, int revents) 4584infy_cb (EV_P_ ev_io *w, int revents)
2928{ 4585{
2929 char buf [EV_INOTIFY_BUFSIZE]; 4586 char buf [EV_INOTIFY_BUFSIZE];
2930 struct inotify_event *ev = (struct inotify_event *)buf;
2931 int ofs; 4587 int ofs;
2932 int len = read (fs_fd, buf, sizeof (buf)); 4588 int len = read (fs_fd, buf, sizeof (buf));
2933 4589
2934 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4590 for (ofs = 0; ofs < len; )
4591 {
4592 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2935 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4593 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4594 ofs += sizeof (struct inotify_event) + ev->len;
4595 }
2936} 4596}
2937 4597
2938inline_size void 4598inline_size ecb_cold
4599void
2939check_2625 (EV_P) 4600ev_check_2625 (EV_P)
2940{ 4601{
2941 /* kernels < 2.6.25 are borked 4602 /* kernels < 2.6.25 are borked
2942 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4603 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2943 */ 4604 */
2944 struct utsname buf; 4605 if (ev_linux_version () < 0x020619)
2945 int major, minor, micro;
2946
2947 if (uname (&buf))
2948 return; 4606 return;
2949 4607
2950 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2951 return;
2952
2953 if (major < 2
2954 || (major == 2 && minor < 6)
2955 || (major == 2 && minor == 6 && micro < 25))
2956 return;
2957
2958 fs_2625 = 1; 4608 fs_2625 = 1;
4609}
4610
4611inline_size int
4612infy_newfd (void)
4613{
4614#if defined IN_CLOEXEC && defined IN_NONBLOCK
4615 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4616 if (fd >= 0)
4617 return fd;
4618#endif
4619 return inotify_init ();
2959} 4620}
2960 4621
2961inline_size void 4622inline_size void
2962infy_init (EV_P) 4623infy_init (EV_P)
2963{ 4624{
2964 if (fs_fd != -2) 4625 if (fs_fd != -2)
2965 return; 4626 return;
2966 4627
2967 fs_fd = -1; 4628 fs_fd = -1;
2968 4629
2969 check_2625 (EV_A); 4630 ev_check_2625 (EV_A);
2970 4631
2971 fs_fd = inotify_init (); 4632 fs_fd = infy_newfd ();
2972 4633
2973 if (fs_fd >= 0) 4634 if (fs_fd >= 0)
2974 { 4635 {
4636 fd_intern (fs_fd);
2975 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4637 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2976 ev_set_priority (&fs_w, EV_MAXPRI); 4638 ev_set_priority (&fs_w, EV_MAXPRI);
2977 ev_io_start (EV_A_ &fs_w); 4639 ev_io_start (EV_A_ &fs_w);
4640 ev_unref (EV_A);
2978 } 4641 }
2979} 4642}
2980 4643
2981inline_size void 4644inline_size void
2982infy_fork (EV_P) 4645infy_fork (EV_P)
… …
2984 int slot; 4647 int slot;
2985 4648
2986 if (fs_fd < 0) 4649 if (fs_fd < 0)
2987 return; 4650 return;
2988 4651
4652 ev_ref (EV_A);
4653 ev_io_stop (EV_A_ &fs_w);
2989 close (fs_fd); 4654 close (fs_fd);
2990 fs_fd = inotify_init (); 4655 fs_fd = infy_newfd ();
2991 4656
4657 if (fs_fd >= 0)
4658 {
4659 fd_intern (fs_fd);
4660 ev_io_set (&fs_w, fs_fd, EV_READ);
4661 ev_io_start (EV_A_ &fs_w);
4662 ev_unref (EV_A);
4663 }
4664
2992 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4665 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2993 { 4666 {
2994 WL w_ = fs_hash [slot].head; 4667 WL w_ = fs_hash [slot].head;
2995 fs_hash [slot].head = 0; 4668 fs_hash [slot].head = 0;
2996 4669
2997 while (w_) 4670 while (w_)
… …
3002 w->wd = -1; 4675 w->wd = -1;
3003 4676
3004 if (fs_fd >= 0) 4677 if (fs_fd >= 0)
3005 infy_add (EV_A_ w); /* re-add, no matter what */ 4678 infy_add (EV_A_ w); /* re-add, no matter what */
3006 else 4679 else
4680 {
4681 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4682 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3007 ev_timer_again (EV_A_ &w->timer); 4683 ev_timer_again (EV_A_ &w->timer);
4684 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4685 }
3008 } 4686 }
3009 } 4687 }
3010} 4688}
3011 4689
3012#endif 4690#endif
… …
3016#else 4694#else
3017# define EV_LSTAT(p,b) lstat (p, b) 4695# define EV_LSTAT(p,b) lstat (p, b)
3018#endif 4696#endif
3019 4697
3020void 4698void
3021ev_stat_stat (EV_P_ ev_stat *w) 4699ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3022{ 4700{
3023 if (lstat (w->path, &w->attr) < 0) 4701 if (lstat (w->path, &w->attr) < 0)
3024 w->attr.st_nlink = 0; 4702 w->attr.st_nlink = 0;
3025 else if (!w->attr.st_nlink) 4703 else if (!w->attr.st_nlink)
3026 w->attr.st_nlink = 1; 4704 w->attr.st_nlink = 1;
3027} 4705}
3028 4706
3029static void noinline 4707ecb_noinline
4708static void
3030stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4709stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3031{ 4710{
3032 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4711 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3033 4712
3034 /* we copy this here each the time so that */ 4713 ev_statdata prev = w->attr;
3035 /* prev has the old value when the callback gets invoked */
3036 w->prev = w->attr;
3037 ev_stat_stat (EV_A_ w); 4714 ev_stat_stat (EV_A_ w);
3038 4715
3039 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4716 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3040 if ( 4717 if (
3041 w->prev.st_dev != w->attr.st_dev 4718 prev.st_dev != w->attr.st_dev
3042 || w->prev.st_ino != w->attr.st_ino 4719 || prev.st_ino != w->attr.st_ino
3043 || w->prev.st_mode != w->attr.st_mode 4720 || prev.st_mode != w->attr.st_mode
3044 || w->prev.st_nlink != w->attr.st_nlink 4721 || prev.st_nlink != w->attr.st_nlink
3045 || w->prev.st_uid != w->attr.st_uid 4722 || prev.st_uid != w->attr.st_uid
3046 || w->prev.st_gid != w->attr.st_gid 4723 || prev.st_gid != w->attr.st_gid
3047 || w->prev.st_rdev != w->attr.st_rdev 4724 || prev.st_rdev != w->attr.st_rdev
3048 || w->prev.st_size != w->attr.st_size 4725 || prev.st_size != w->attr.st_size
3049 || w->prev.st_atime != w->attr.st_atime 4726 || prev.st_atime != w->attr.st_atime
3050 || w->prev.st_mtime != w->attr.st_mtime 4727 || prev.st_mtime != w->attr.st_mtime
3051 || w->prev.st_ctime != w->attr.st_ctime 4728 || prev.st_ctime != w->attr.st_ctime
3052 ) { 4729 ) {
4730 /* we only update w->prev on actual differences */
4731 /* in case we test more often than invoke the callback, */
4732 /* to ensure that prev is always different to attr */
4733 w->prev = prev;
4734
3053 #if EV_USE_INOTIFY 4735 #if EV_USE_INOTIFY
3054 if (fs_fd >= 0) 4736 if (fs_fd >= 0)
3055 { 4737 {
3056 infy_del (EV_A_ w); 4738 infy_del (EV_A_ w);
3057 infy_add (EV_A_ w); 4739 infy_add (EV_A_ w);
… …
3062 ev_feed_event (EV_A_ w, EV_STAT); 4744 ev_feed_event (EV_A_ w, EV_STAT);
3063 } 4745 }
3064} 4746}
3065 4747
3066void 4748void
3067ev_stat_start (EV_P_ ev_stat *w) 4749ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3068{ 4750{
3069 if (expect_false (ev_is_active (w))) 4751 if (ecb_expect_false (ev_is_active (w)))
3070 return; 4752 return;
3071 4753
3072 ev_stat_stat (EV_A_ w); 4754 ev_stat_stat (EV_A_ w);
3073 4755
3074 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4756 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3082 4764
3083 if (fs_fd >= 0) 4765 if (fs_fd >= 0)
3084 infy_add (EV_A_ w); 4766 infy_add (EV_A_ w);
3085 else 4767 else
3086#endif 4768#endif
4769 {
3087 ev_timer_again (EV_A_ &w->timer); 4770 ev_timer_again (EV_A_ &w->timer);
4771 ev_unref (EV_A);
4772 }
3088 4773
3089 ev_start (EV_A_ (W)w, 1); 4774 ev_start (EV_A_ (W)w, 1);
3090 4775
3091 EV_FREQUENT_CHECK; 4776 EV_FREQUENT_CHECK;
3092} 4777}
3093 4778
3094void 4779void
3095ev_stat_stop (EV_P_ ev_stat *w) 4780ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3096{ 4781{
3097 clear_pending (EV_A_ (W)w); 4782 clear_pending (EV_A_ (W)w);
3098 if (expect_false (!ev_is_active (w))) 4783 if (ecb_expect_false (!ev_is_active (w)))
3099 return; 4784 return;
3100 4785
3101 EV_FREQUENT_CHECK; 4786 EV_FREQUENT_CHECK;
3102 4787
3103#if EV_USE_INOTIFY 4788#if EV_USE_INOTIFY
3104 infy_del (EV_A_ w); 4789 infy_del (EV_A_ w);
3105#endif 4790#endif
4791
4792 if (ev_is_active (&w->timer))
4793 {
4794 ev_ref (EV_A);
3106 ev_timer_stop (EV_A_ &w->timer); 4795 ev_timer_stop (EV_A_ &w->timer);
4796 }
3107 4797
3108 ev_stop (EV_A_ (W)w); 4798 ev_stop (EV_A_ (W)w);
3109 4799
3110 EV_FREQUENT_CHECK; 4800 EV_FREQUENT_CHECK;
3111} 4801}
3112#endif 4802#endif
3113 4803
3114#if EV_IDLE_ENABLE 4804#if EV_IDLE_ENABLE
3115void 4805void
3116ev_idle_start (EV_P_ ev_idle *w) 4806ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3117{ 4807{
3118 if (expect_false (ev_is_active (w))) 4808 if (ecb_expect_false (ev_is_active (w)))
3119 return; 4809 return;
3120 4810
3121 pri_adjust (EV_A_ (W)w); 4811 pri_adjust (EV_A_ (W)w);
3122 4812
3123 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
… …
3126 int active = ++idlecnt [ABSPRI (w)]; 4816 int active = ++idlecnt [ABSPRI (w)];
3127 4817
3128 ++idleall; 4818 ++idleall;
3129 ev_start (EV_A_ (W)w, active); 4819 ev_start (EV_A_ (W)w, active);
3130 4820
3131 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4821 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3132 idles [ABSPRI (w)][active - 1] = w; 4822 idles [ABSPRI (w)][active - 1] = w;
3133 } 4823 }
3134 4824
3135 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
3136} 4826}
3137 4827
3138void 4828void
3139ev_idle_stop (EV_P_ ev_idle *w) 4829ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3140{ 4830{
3141 clear_pending (EV_A_ (W)w); 4831 clear_pending (EV_A_ (W)w);
3142 if (expect_false (!ev_is_active (w))) 4832 if (ecb_expect_false (!ev_is_active (w)))
3143 return; 4833 return;
3144 4834
3145 EV_FREQUENT_CHECK; 4835 EV_FREQUENT_CHECK;
3146 4836
3147 { 4837 {
… …
3156 4846
3157 EV_FREQUENT_CHECK; 4847 EV_FREQUENT_CHECK;
3158} 4848}
3159#endif 4849#endif
3160 4850
4851#if EV_PREPARE_ENABLE
3161void 4852void
3162ev_prepare_start (EV_P_ ev_prepare *w) 4853ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3163{ 4854{
3164 if (expect_false (ev_is_active (w))) 4855 if (ecb_expect_false (ev_is_active (w)))
3165 return; 4856 return;
3166 4857
3167 EV_FREQUENT_CHECK; 4858 EV_FREQUENT_CHECK;
3168 4859
3169 ev_start (EV_A_ (W)w, ++preparecnt); 4860 ev_start (EV_A_ (W)w, ++preparecnt);
3170 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4861 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3171 prepares [preparecnt - 1] = w; 4862 prepares [preparecnt - 1] = w;
3172 4863
3173 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
3174} 4865}
3175 4866
3176void 4867void
3177ev_prepare_stop (EV_P_ ev_prepare *w) 4868ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3178{ 4869{
3179 clear_pending (EV_A_ (W)w); 4870 clear_pending (EV_A_ (W)w);
3180 if (expect_false (!ev_is_active (w))) 4871 if (ecb_expect_false (!ev_is_active (w)))
3181 return; 4872 return;
3182 4873
3183 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3184 4875
3185 { 4876 {
… …
3191 4882
3192 ev_stop (EV_A_ (W)w); 4883 ev_stop (EV_A_ (W)w);
3193 4884
3194 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
3195} 4886}
4887#endif
3196 4888
4889#if EV_CHECK_ENABLE
3197void 4890void
3198ev_check_start (EV_P_ ev_check *w) 4891ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3199{ 4892{
3200 if (expect_false (ev_is_active (w))) 4893 if (ecb_expect_false (ev_is_active (w)))
3201 return; 4894 return;
3202 4895
3203 EV_FREQUENT_CHECK; 4896 EV_FREQUENT_CHECK;
3204 4897
3205 ev_start (EV_A_ (W)w, ++checkcnt); 4898 ev_start (EV_A_ (W)w, ++checkcnt);
3206 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4899 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3207 checks [checkcnt - 1] = w; 4900 checks [checkcnt - 1] = w;
3208 4901
3209 EV_FREQUENT_CHECK; 4902 EV_FREQUENT_CHECK;
3210} 4903}
3211 4904
3212void 4905void
3213ev_check_stop (EV_P_ ev_check *w) 4906ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3214{ 4907{
3215 clear_pending (EV_A_ (W)w); 4908 clear_pending (EV_A_ (W)w);
3216 if (expect_false (!ev_is_active (w))) 4909 if (ecb_expect_false (!ev_is_active (w)))
3217 return; 4910 return;
3218 4911
3219 EV_FREQUENT_CHECK; 4912 EV_FREQUENT_CHECK;
3220 4913
3221 { 4914 {
… …
3227 4920
3228 ev_stop (EV_A_ (W)w); 4921 ev_stop (EV_A_ (W)w);
3229 4922
3230 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3231} 4924}
4925#endif
3232 4926
3233#if EV_EMBED_ENABLE 4927#if EV_EMBED_ENABLE
3234void noinline 4928ecb_noinline
4929void
3235ev_embed_sweep (EV_P_ ev_embed *w) 4930ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3236{ 4931{
3237 ev_loop (w->other, EVLOOP_NONBLOCK); 4932 ev_run (w->other, EVRUN_NOWAIT);
3238} 4933}
3239 4934
3240static void 4935static void
3241embed_io_cb (EV_P_ ev_io *io, int revents) 4936embed_io_cb (EV_P_ ev_io *io, int revents)
3242{ 4937{
3243 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4938 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3244 4939
3245 if (ev_cb (w)) 4940 if (ev_cb (w))
3246 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4941 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3247 else 4942 else
3248 ev_loop (w->other, EVLOOP_NONBLOCK); 4943 ev_run (w->other, EVRUN_NOWAIT);
3249} 4944}
3250 4945
3251static void 4946static void
3252embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4947embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3253{ 4948{
… …
3257 EV_P = w->other; 4952 EV_P = w->other;
3258 4953
3259 while (fdchangecnt) 4954 while (fdchangecnt)
3260 { 4955 {
3261 fd_reify (EV_A); 4956 fd_reify (EV_A);
3262 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4957 ev_run (EV_A_ EVRUN_NOWAIT);
3263 } 4958 }
3264 } 4959 }
3265} 4960}
3266 4961
3267static void 4962static void
… …
3273 4968
3274 { 4969 {
3275 EV_P = w->other; 4970 EV_P = w->other;
3276 4971
3277 ev_loop_fork (EV_A); 4972 ev_loop_fork (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4973 ev_run (EV_A_ EVRUN_NOWAIT);
3279 } 4974 }
3280 4975
3281 ev_embed_start (EV_A_ w); 4976 ev_embed_start (EV_A_ w);
3282} 4977}
3283 4978
… …
3288 ev_idle_stop (EV_A_ idle); 4983 ev_idle_stop (EV_A_ idle);
3289} 4984}
3290#endif 4985#endif
3291 4986
3292void 4987void
3293ev_embed_start (EV_P_ ev_embed *w) 4988ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3294{ 4989{
3295 if (expect_false (ev_is_active (w))) 4990 if (ecb_expect_false (ev_is_active (w)))
3296 return; 4991 return;
3297 4992
3298 { 4993 {
3299 EV_P = w->other; 4994 EV_P = w->other;
3300 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4995 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3319 5014
3320 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
3321} 5016}
3322 5017
3323void 5018void
3324ev_embed_stop (EV_P_ ev_embed *w) 5019ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3325{ 5020{
3326 clear_pending (EV_A_ (W)w); 5021 clear_pending (EV_A_ (W)w);
3327 if (expect_false (!ev_is_active (w))) 5022 if (ecb_expect_false (!ev_is_active (w)))
3328 return; 5023 return;
3329 5024
3330 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
3331 5026
3332 ev_io_stop (EV_A_ &w->io); 5027 ev_io_stop (EV_A_ &w->io);
3333 ev_prepare_stop (EV_A_ &w->prepare); 5028 ev_prepare_stop (EV_A_ &w->prepare);
3334 ev_fork_stop (EV_A_ &w->fork); 5029 ev_fork_stop (EV_A_ &w->fork);
3335 5030
5031 ev_stop (EV_A_ (W)w);
5032
3336 EV_FREQUENT_CHECK; 5033 EV_FREQUENT_CHECK;
3337} 5034}
3338#endif 5035#endif
3339 5036
3340#if EV_FORK_ENABLE 5037#if EV_FORK_ENABLE
3341void 5038void
3342ev_fork_start (EV_P_ ev_fork *w) 5039ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3343{ 5040{
3344 if (expect_false (ev_is_active (w))) 5041 if (ecb_expect_false (ev_is_active (w)))
3345 return; 5042 return;
3346 5043
3347 EV_FREQUENT_CHECK; 5044 EV_FREQUENT_CHECK;
3348 5045
3349 ev_start (EV_A_ (W)w, ++forkcnt); 5046 ev_start (EV_A_ (W)w, ++forkcnt);
3350 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5047 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3351 forks [forkcnt - 1] = w; 5048 forks [forkcnt - 1] = w;
3352 5049
3353 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3354} 5051}
3355 5052
3356void 5053void
3357ev_fork_stop (EV_P_ ev_fork *w) 5054ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3358{ 5055{
3359 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
3360 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
3361 return; 5058 return;
3362 5059
3363 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3364 5061
3365 { 5062 {
… …
3373 5070
3374 EV_FREQUENT_CHECK; 5071 EV_FREQUENT_CHECK;
3375} 5072}
3376#endif 5073#endif
3377 5074
5075#if EV_CLEANUP_ENABLE
5076void
5077ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5078{
5079 if (ecb_expect_false (ev_is_active (w)))
5080 return;
5081
5082 EV_FREQUENT_CHECK;
5083
5084 ev_start (EV_A_ (W)w, ++cleanupcnt);
5085 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5086 cleanups [cleanupcnt - 1] = w;
5087
5088 /* cleanup watchers should never keep a refcount on the loop */
5089 ev_unref (EV_A);
5090 EV_FREQUENT_CHECK;
5091}
5092
5093void
5094ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5095{
5096 clear_pending (EV_A_ (W)w);
5097 if (ecb_expect_false (!ev_is_active (w)))
5098 return;
5099
5100 EV_FREQUENT_CHECK;
5101 ev_ref (EV_A);
5102
5103 {
5104 int active = ev_active (w);
5105
5106 cleanups [active - 1] = cleanups [--cleanupcnt];
5107 ev_active (cleanups [active - 1]) = active;
5108 }
5109
5110 ev_stop (EV_A_ (W)w);
5111
5112 EV_FREQUENT_CHECK;
5113}
5114#endif
5115
3378#if EV_ASYNC_ENABLE 5116#if EV_ASYNC_ENABLE
3379void 5117void
3380ev_async_start (EV_P_ ev_async *w) 5118ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3381{ 5119{
3382 if (expect_false (ev_is_active (w))) 5120 if (ecb_expect_false (ev_is_active (w)))
3383 return; 5121 return;
3384 5122
5123 w->sent = 0;
5124
3385 evpipe_init (EV_A); 5125 evpipe_init (EV_A);
3386 5126
3387 EV_FREQUENT_CHECK; 5127 EV_FREQUENT_CHECK;
3388 5128
3389 ev_start (EV_A_ (W)w, ++asynccnt); 5129 ev_start (EV_A_ (W)w, ++asynccnt);
3390 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5130 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3391 asyncs [asynccnt - 1] = w; 5131 asyncs [asynccnt - 1] = w;
3392 5132
3393 EV_FREQUENT_CHECK; 5133 EV_FREQUENT_CHECK;
3394} 5134}
3395 5135
3396void 5136void
3397ev_async_stop (EV_P_ ev_async *w) 5137ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3398{ 5138{
3399 clear_pending (EV_A_ (W)w); 5139 clear_pending (EV_A_ (W)w);
3400 if (expect_false (!ev_is_active (w))) 5140 if (ecb_expect_false (!ev_is_active (w)))
3401 return; 5141 return;
3402 5142
3403 EV_FREQUENT_CHECK; 5143 EV_FREQUENT_CHECK;
3404 5144
3405 { 5145 {
… …
3413 5153
3414 EV_FREQUENT_CHECK; 5154 EV_FREQUENT_CHECK;
3415} 5155}
3416 5156
3417void 5157void
3418ev_async_send (EV_P_ ev_async *w) 5158ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3419{ 5159{
3420 w->sent = 1; 5160 w->sent = 1;
3421 evpipe_write (EV_A_ &gotasync); 5161 evpipe_write (EV_A_ &async_pending);
3422} 5162}
3423#endif 5163#endif
3424 5164
3425/*****************************************************************************/ 5165/*****************************************************************************/
3426 5166
… …
3460 5200
3461 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5201 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3462} 5202}
3463 5203
3464void 5204void
3465ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5205ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3466{ 5206{
3467 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5207 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3468
3469 if (expect_false (!once))
3470 {
3471 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3472 return;
3473 }
3474 5208
3475 once->cb = cb; 5209 once->cb = cb;
3476 once->arg = arg; 5210 once->arg = arg;
3477 5211
3478 ev_init (&once->io, once_cb_io); 5212 ev_init (&once->io, once_cb_io);
… …
3491} 5225}
3492 5226
3493/*****************************************************************************/ 5227/*****************************************************************************/
3494 5228
3495#if EV_WALK_ENABLE 5229#if EV_WALK_ENABLE
5230ecb_cold
3496void 5231void
3497ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5232ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3498{ 5233{
3499 int i, j; 5234 int i, j;
3500 ev_watcher_list *wl, *wn; 5235 ev_watcher_list *wl, *wn;
3501 5236
3502 if (types & (EV_IO | EV_EMBED)) 5237 if (types & (EV_IO | EV_EMBED))
… …
3545 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5280 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3546#endif 5281#endif
3547 5282
3548#if EV_IDLE_ENABLE 5283#if EV_IDLE_ENABLE
3549 if (types & EV_IDLE) 5284 if (types & EV_IDLE)
3550 for (j = NUMPRI; i--; ) 5285 for (j = NUMPRI; j--; )
3551 for (i = idlecnt [j]; i--; ) 5286 for (i = idlecnt [j]; i--; )
3552 cb (EV_A_ EV_IDLE, idles [j][i]); 5287 cb (EV_A_ EV_IDLE, idles [j][i]);
3553#endif 5288#endif
3554 5289
3555#if EV_FORK_ENABLE 5290#if EV_FORK_ENABLE
… …
3563 if (types & EV_ASYNC) 5298 if (types & EV_ASYNC)
3564 for (i = asynccnt; i--; ) 5299 for (i = asynccnt; i--; )
3565 cb (EV_A_ EV_ASYNC, asyncs [i]); 5300 cb (EV_A_ EV_ASYNC, asyncs [i]);
3566#endif 5301#endif
3567 5302
5303#if EV_PREPARE_ENABLE
3568 if (types & EV_PREPARE) 5304 if (types & EV_PREPARE)
3569 for (i = preparecnt; i--; ) 5305 for (i = preparecnt; i--; )
3570#if EV_EMBED_ENABLE 5306# if EV_EMBED_ENABLE
3571 if (ev_cb (prepares [i]) != embed_prepare_cb) 5307 if (ev_cb (prepares [i]) != embed_prepare_cb)
3572#endif 5308# endif
3573 cb (EV_A_ EV_PREPARE, prepares [i]); 5309 cb (EV_A_ EV_PREPARE, prepares [i]);
5310#endif
3574 5311
5312#if EV_CHECK_ENABLE
3575 if (types & EV_CHECK) 5313 if (types & EV_CHECK)
3576 for (i = checkcnt; i--; ) 5314 for (i = checkcnt; i--; )
3577 cb (EV_A_ EV_CHECK, checks [i]); 5315 cb (EV_A_ EV_CHECK, checks [i]);
5316#endif
3578 5317
5318#if EV_SIGNAL_ENABLE
3579 if (types & EV_SIGNAL) 5319 if (types & EV_SIGNAL)
3580 for (i = 0; i < EV_NSIG - 1; ++i) 5320 for (i = 0; i < EV_NSIG - 1; ++i)
3581 for (wl = signals [i].head; wl; ) 5321 for (wl = signals [i].head; wl; )
3582 { 5322 {
3583 wn = wl->next; 5323 wn = wl->next;
3584 cb (EV_A_ EV_SIGNAL, wl); 5324 cb (EV_A_ EV_SIGNAL, wl);
3585 wl = wn; 5325 wl = wn;
3586 } 5326 }
5327#endif
3587 5328
5329#if EV_CHILD_ENABLE
3588 if (types & EV_CHILD) 5330 if (types & EV_CHILD)
3589 for (i = EV_PID_HASHSIZE; i--; ) 5331 for (i = (EV_PID_HASHSIZE); i--; )
3590 for (wl = childs [i]; wl; ) 5332 for (wl = childs [i]; wl; )
3591 { 5333 {
3592 wn = wl->next; 5334 wn = wl->next;
3593 cb (EV_A_ EV_CHILD, wl); 5335 cb (EV_A_ EV_CHILD, wl);
3594 wl = wn; 5336 wl = wn;
3595 } 5337 }
5338#endif
3596/* EV_STAT 0x00001000 /* stat data changed */ 5339/* EV_STAT 0x00001000 /* stat data changed */
3597/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5340/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3598} 5341}
3599#endif 5342#endif
3600 5343
3601#if EV_MULTIPLICITY 5344#if EV_MULTIPLICITY
3602 #include "ev_wrap.h" 5345 #include "ev_wrap.h"
3603#endif 5346#endif
3604 5347
3605#ifdef __cplusplus
3606}
3607#endif
3608

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