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Comparing libev/ev.c (file contents):
Revision 1.320 by root, Fri Dec 4 20:25:06 2009 UTC vs.
Revision 1.515 by root, Fri Dec 20 20:51:46 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# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
203
157#include <stdlib.h> 204#include <stdlib.h>
158#include <string.h> 205#include <string.h>
159#include <fcntl.h> 206#include <fcntl.h>
160#include <stddef.h> 207#include <stddef.h>
161 208
… …
163 210
164#include <assert.h> 211#include <assert.h>
165#include <errno.h> 212#include <errno.h>
166#include <sys/types.h> 213#include <sys/types.h>
167#include <time.h> 214#include <time.h>
215#include <limits.h>
168 216
169#include <signal.h> 217#include <signal.h>
170 218
171#ifdef EV_H 219#ifdef EV_H
172# include EV_H 220# include EV_H
173#else 221#else
174# include "ev.h" 222# include "ev.h"
223#endif
224
225#if EV_NO_THREADS
226# undef EV_NO_SMP
227# define EV_NO_SMP 1
228# undef ECB_NO_THREADS
229# define ECB_NO_THREADS 1
230#endif
231#if EV_NO_SMP
232# undef EV_NO_SMP
233# define ECB_NO_SMP 1
175#endif 234#endif
176 235
177#ifndef _WIN32 236#ifndef _WIN32
178# include <sys/time.h> 237# include <sys/time.h>
179# include <sys/wait.h> 238# include <sys/wait.h>
180# include <unistd.h> 239# include <unistd.h>
181#else 240#else
182# include <io.h> 241# include <io.h>
183# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
184# include <windows.h> 244# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
187# endif 247# endif
248# undef EV_AVOID_STDIO
188#endif 249#endif
189 250
190/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
191 252
192/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 254#if defined EV_NSIG
194/* use what's provided */ 255/* use what's provided */
195#elif defined (NSIG) 256#elif defined NSIG
196# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 258#elif defined _NSIG
198# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 260#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 262#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 266#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 268#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 272#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 274#else
214# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
215/* to make it compile regardless, just remove the above line */ 276#endif
216# define EV_NSIG 65 277
278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
217#endif 280#endif
218 281
219#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
221# define EV_USE_CLOCK_SYSCALL 1 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 285# else
223# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
224# endif 287# endif
225#endif 288#endif
226 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
227#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 301# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 302# else
231# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
232# endif 304# endif
233#endif 305#endif
234 306
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 308# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 309#endif
238 310
239#ifndef EV_USE_NANOSLEEP 311#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 312# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 313# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 314# else
243# define EV_USE_NANOSLEEP 0 315# define EV_USE_NANOSLEEP 0
244# endif 316# endif
245#endif 317#endif
246 318
247#ifndef EV_USE_SELECT 319#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 320# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 321#endif
250 322
251#ifndef EV_USE_POLL 323#ifndef EV_USE_POLL
252# ifdef _WIN32 324# ifdef _WIN32
253# define EV_USE_POLL 0 325# define EV_USE_POLL 0
254# else 326# else
255# define EV_USE_POLL 1 327# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 328# endif
257#endif 329#endif
258 330
259#ifndef EV_USE_EPOLL 331#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 332# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 333# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 334# else
263# define EV_USE_EPOLL 0 335# define EV_USE_EPOLL 0
264# endif 336# endif
265#endif 337#endif
266 338
… …
270 342
271#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
272# define EV_USE_PORT 0 344# define EV_USE_PORT 0
273#endif 345#endif
274 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 1
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
275#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 365# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 366# else
279# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
280# endif 368# endif
281#endif 369#endif
282 370
283#ifndef EV_PID_HASHSIZE 371#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 372# 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 373#endif
290 374
291#ifndef EV_INOTIFY_HASHSIZE 375#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 376# 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 377#endif
298 378
299#ifndef EV_USE_EVENTFD 379#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 380# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 381# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 382# else
303# define EV_USE_EVENTFD 0 383# define EV_USE_EVENTFD 0
304# endif 384# endif
305#endif 385#endif
306 386
307#ifndef EV_USE_SIGNALFD 387#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 388# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 389# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 390# else
311# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
392# endif
393#endif
394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
312# endif 400# endif
313#endif 401#endif
314 402
315#if 0 /* debugging */ 403#if 0 /* debugging */
316# define EV_VERIFY 3 404# define EV_VERIFY 3
317# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
319#endif 407#endif
320 408
321#ifndef EV_VERIFY 409#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 410# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 411#endif
324 412
325#ifndef EV_USE_4HEAP 413#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 414# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 415#endif
328 416
329#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
419#endif
420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
331#endif 435#endif
332 436
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* 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. */ 438/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 440# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
341# else 446# else
342# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
343# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
344# endif 449# endif
345#endif 450#endif
… …
359#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
360# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
362#endif 467#endif
363 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
364#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
366# include <sys/select.h> 480# include <sys/select.h>
367# endif 481# endif
368#endif 482#endif
369 483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
506# endif
507#endif
508
370#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 510# include <sys/statfs.h>
373# include <sys/inotify.h> 511# include <sys/inotify.h>
374/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 512/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
375# ifndef IN_DONT_FOLLOW 513# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
378# endif 516# endif
379#endif 517#endif
380 518
381#if EV_SELECT_IS_WINSOCKET
382# include <winsock.h>
383#endif
384
385#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
386/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
387# include <stdint.h> 521# include <stdint.h>
388# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
390# endif 524# endif
391# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
393# define EFD_CLOEXEC O_CLOEXEC 527# define EFD_CLOEXEC O_CLOEXEC
394# else 528# else
395# define EFD_CLOEXEC 02000000 529# define EFD_CLOEXEC 02000000
396# endif 530# endif
397# endif 531# endif
398# ifdef __cplusplus
399extern "C" {
400# endif
401int eventfd (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
402# ifdef __cplusplus
403}
404# endif
405#endif 533#endif
406 534
407#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
408/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
409# include <stdint.h> 537# include <stdint.h>
410# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
411# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
412# endif 540# endif
413# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
415# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
416# else 544# else
417# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
418# endif 546# endif
419# endif 547# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
424 549
425struct signalfd_siginfo 550struct signalfd_siginfo
426{ 551{
427 uint32_t ssi_signo; 552 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
429}; 554};
430# ifdef __cplusplus 555#endif
431} 556
557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
432# endif 564# endif
433#endif 565#endif
434 566
435 567/*****************************************************************************/
436/**/
437 568
438#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
440#else 571#else
441# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
442#endif 573#endif
443 574
444/* 575/*
445 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
446 * It is added to ev_rt_now when scheduling periodics
447 * to ensure progress, time-wise, even when rounding
448 * errors are against us.
449 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
450 * Better solutions welcome.
451 */ 578 */
452#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
453 581
454#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
455#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
456 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# define EV_TS_FROM_USEC(us) us * 1e-6
597# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
598# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
602
603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
604/* ECB.H BEGIN */
605/*
606 * libecb - http://software.schmorp.de/pkg/libecb
607 *
608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
609 * Copyright (©) 2011 Emanuele Giaquinta
610 * All rights reserved.
611 *
612 * Redistribution and use in source and binary forms, with or without modifica-
613 * tion, are permitted provided that the following conditions are met:
614 *
615 * 1. Redistributions of source code must retain the above copyright notice,
616 * this list of conditions and the following disclaimer.
617 *
618 * 2. Redistributions in binary form must reproduce the above copyright
619 * notice, this list of conditions and the following disclaimer in the
620 * documentation and/or other materials provided with the distribution.
621 *
622 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
623 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
624 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
625 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
626 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
643 */
644
645#ifndef ECB_H
646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
650
651#ifdef _WIN32
652 typedef signed char int8_t;
653 typedef unsigned char uint8_t;
654 typedef signed short int16_t;
655 typedef unsigned short uint16_t;
656 typedef signed int int32_t;
657 typedef unsigned int uint32_t;
457#if __GNUC__ >= 4 658 #if __GNUC__
458# define expect(expr,value) __builtin_expect ((expr),(value)) 659 typedef signed long long int64_t;
459# define noinline __attribute__ ((noinline)) 660 typedef unsigned long long uint64_t;
661 #else /* _MSC_VER || __BORLANDC__ */
662 typedef signed __int64 int64_t;
663 typedef unsigned __int64 uint64_t;
664 #endif
665 #ifdef _WIN64
666 #define ECB_PTRSIZE 8
667 typedef uint64_t uintptr_t;
668 typedef int64_t intptr_t;
669 #else
670 #define ECB_PTRSIZE 4
671 typedef uint32_t uintptr_t;
672 typedef int32_t intptr_t;
673 #endif
460#else 674#else
461# define expect(expr,value) (expr) 675 #include <inttypes.h>
462# define noinline 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
463# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 677 #define ECB_PTRSIZE 8
464# define inline 678 #else
679 #define ECB_PTRSIZE 4
680 #endif
465# endif 681#endif
682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
686/* work around x32 idiocy by defining proper macros */
687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
688 #if _ILP32
689 #define ECB_AMD64_X32 1
690 #else
691 #define ECB_AMD64 1
466#endif 692 #endif
693#endif
467 694
468#define expect_false(expr) expect ((expr) != 0, 0) 695/* many compilers define _GNUC_ to some versions but then only implement
469#define expect_true(expr) expect ((expr) != 0, 1) 696 * what their idiot authors think are the "more important" extensions,
470#define inline_size static inline 697 * causing enormous grief in return for some better fake benchmark numbers.
471 698 * or so.
472#if EV_MINIMAL 699 * we try to detect these and simply assume they are not gcc - if they have
473# define inline_speed static noinline 700 * an issue with that they should have done it right in the first place.
701 */
702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
703 #define ECB_GCC_VERSION(major,minor) 0
474#else 704#else
705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
722#define ECB_CPP (__cplusplus+0)
723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
738
739#if ECB_CPP
740 #define ECB_EXTERN_C extern "C"
741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
742 #define ECB_EXTERN_C_END }
743#else
744 #define ECB_EXTERN_C extern
745 #define ECB_EXTERN_C_BEG
746 #define ECB_EXTERN_C_END
747#endif
748
749/*****************************************************************************/
750
751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
752/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
753
754#if ECB_NO_THREADS
755 #define ECB_NO_SMP 1
756#endif
757
758#if ECB_NO_SMP
759 #define ECB_MEMORY_FENCE do { } while (0)
760#endif
761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
771#ifndef ECB_MEMORY_FENCE
772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
774 #if __i386 || __i386__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
778 #elif ECB_GCC_AMD64
779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
823 #endif
824 #endif
825#endif
826
827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
843 #define ECB_MEMORY_FENCE __sync_synchronize ()
844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
855 #elif defined _WIN32
856 #include <WinNT.h>
857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
859 #include <mbarrier.h>
860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
877 #endif
878#endif
879
880#ifndef ECB_MEMORY_FENCE
881 #if !ECB_AVOID_PTHREADS
882 /*
883 * if you get undefined symbol references to pthread_mutex_lock,
884 * or failure to find pthread.h, then you should implement
885 * the ECB_MEMORY_FENCE operations for your cpu/compiler
886 * OR provide pthread.h and link against the posix thread library
887 * of your system.
888 */
889 #include <pthread.h>
890 #define ECB_NEEDS_PTHREADS 1
891 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
892
893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
895 #endif
896#endif
897
898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
900#endif
901
902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
904#endif
905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
910/*****************************************************************************/
911
912#if ECB_CPP
913 #define ecb_inline static inline
914#elif ECB_GCC_VERSION(2,5)
915 #define ecb_inline static __inline__
916#elif ECB_C99
917 #define ecb_inline static inline
918#else
919 #define ecb_inline static
920#endif
921
922#if ECB_GCC_VERSION(3,3)
923 #define ecb_restrict __restrict__
924#elif ECB_C99
925 #define ecb_restrict restrict
926#else
927 #define ecb_restrict
928#endif
929
930typedef int ecb_bool;
931
932#define ECB_CONCAT_(a, b) a ## b
933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
934#define ECB_STRINGIFY_(a) # a
935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
937
938#define ecb_function_ ecb_inline
939
940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
964#else
965 #define ecb_prefetch(addr,rw,locality)
966#endif
967
968/* no emulation for ecb_decltype */
969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
974 #define ecb_decltype(x) __typeof__ (x)
975#endif
976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
997#define ecb_unused ecb_attribute ((__unused__))
998#define ecb_const ecb_attribute ((__const__))
999#define ecb_pure ecb_attribute ((__pure__))
1000
1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
1009#else
1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
1011#endif
1012
1013#if ECB_GCC_VERSION(4,3)
1014 #define ecb_artificial ecb_attribute ((__artificial__))
1015 #define ecb_hot ecb_attribute ((__hot__))
1016 #define ecb_cold ecb_attribute ((__cold__))
1017#else
1018 #define ecb_artificial
1019 #define ecb_hot
1020 #define ecb_cold
1021#endif
1022
1023/* put around conditional expressions if you are very sure that the */
1024/* expression is mostly true or mostly false. note that these return */
1025/* booleans, not the expression. */
1026#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1027#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1028/* for compatibility to the rest of the world */
1029#define ecb_likely(expr) ecb_expect_true (expr)
1030#define ecb_unlikely(expr) ecb_expect_false (expr)
1031
1032/* count trailing zero bits and count # of one bits */
1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1040 #define ecb_ctz32(x) __builtin_ctz (x)
1041 #define ecb_ctz64(x) __builtin_ctzll (x)
1042 #define ecb_popcount32(x) __builtin_popcount (x)
1043 /* no popcountll */
1044#else
1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1046 ecb_function_ ecb_const int
1047 ecb_ctz32 (uint32_t x)
1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
1054 int r = 0;
1055
1056 x &= ~x + 1; /* this isolates the lowest bit */
1057
1058#if ECB_branchless_on_i386
1059 r += !!(x & 0xaaaaaaaa) << 0;
1060 r += !!(x & 0xcccccccc) << 1;
1061 r += !!(x & 0xf0f0f0f0) << 2;
1062 r += !!(x & 0xff00ff00) << 3;
1063 r += !!(x & 0xffff0000) << 4;
1064#else
1065 if (x & 0xaaaaaaaa) r += 1;
1066 if (x & 0xcccccccc) r += 2;
1067 if (x & 0xf0f0f0f0) r += 4;
1068 if (x & 0xff00ff00) r += 8;
1069 if (x & 0xffff0000) r += 16;
1070#endif
1071
1072 return r;
1073#endif
1074 }
1075
1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1077 ecb_function_ ecb_const int
1078 ecb_ctz64 (uint64_t x)
1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
1085 int shift = x & 0xffffffff ? 0 : 32;
1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
1088 }
1089
1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1091 ecb_function_ ecb_const int
1092 ecb_popcount32 (uint32_t x)
1093 {
1094 x -= (x >> 1) & 0x55555555;
1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
1097 x *= 0x01010101;
1098
1099 return x >> 24;
1100 }
1101
1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
1110 int r = 0;
1111
1112 if (x >> 16) { x >>= 16; r += 16; }
1113 if (x >> 8) { x >>= 8; r += 8; }
1114 if (x >> 4) { x >>= 4; r += 4; }
1115 if (x >> 2) { x >>= 2; r += 2; }
1116 if (x >> 1) { r += 1; }
1117
1118 return r;
1119#endif
1120 }
1121
1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
1130 int r = 0;
1131
1132 if (x >> 32) { x >>= 32; r += 32; }
1133
1134 return r + ecb_ld32 (x);
1135#endif
1136 }
1137#endif
1138
1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1143
1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1146{
1147 return ( (x * 0x0802U & 0x22110U)
1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1149}
1150
1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1153{
1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1157 x = ( x >> 8 ) | ( x << 8);
1158
1159 return x;
1160}
1161
1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1164{
1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1169 x = ( x >> 16 ) | ( x << 16);
1170
1171 return x;
1172}
1173
1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
1175/* so for this version we are lazy */
1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1177ecb_function_ ecb_const int
1178ecb_popcount64 (uint64_t x)
1179{
1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1181}
1182
1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1191
1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1200
1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1214#else
1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1216 ecb_function_ ecb_const uint16_t
1217 ecb_bswap16 (uint16_t x)
1218 {
1219 return ecb_rotl16 (x, 8);
1220 }
1221
1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1223 ecb_function_ ecb_const uint32_t
1224 ecb_bswap32 (uint32_t x)
1225 {
1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1227 }
1228
1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1230 ecb_function_ ecb_const uint64_t
1231 ecb_bswap64 (uint64_t x)
1232 {
1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1234 }
1235#endif
1236
1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1238 #define ecb_unreachable() __builtin_unreachable ()
1239#else
1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1243#endif
1244
1245/* try to tell the compiler that some condition is definitely true */
1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1247
1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1249ecb_inline ecb_const uint32_t
1250ecb_byteorder_helper (void)
1251{
1252 /* the union code still generates code under pressure in gcc, */
1253 /* but less than using pointers, and always seems to */
1254 /* successfully return a constant. */
1255 /* the reason why we have this horrible preprocessor mess */
1256 /* is to avoid it in all cases, at least on common architectures */
1257 /* or when using a recent enough gcc version (>= 4.6) */
1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1261 return 0x44332211;
1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1265 return 0x11223344;
1266#else
1267 union
1268 {
1269 uint8_t c[4];
1270 uint32_t u;
1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1272 return u.u;
1273#endif
1274}
1275
1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1280
1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1283#else
1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1285#endif
1286
1287#if ECB_CPP
1288 template<typename T>
1289 static inline T ecb_div_rd (T val, T div)
1290 {
1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1292 }
1293 template<typename T>
1294 static inline T ecb_div_ru (T val, T div)
1295 {
1296 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1297 }
1298#else
1299 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1300 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1301#endif
1302
1303#if ecb_cplusplus_does_not_suck
1304 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1305 template<typename T, int N>
1306 static inline int ecb_array_length (const T (&arr)[N])
1307 {
1308 return N;
1309 }
1310#else
1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1312#endif
1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1410/*******************************************************************************/
1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1412
1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1415#if 0 \
1416 || __i386 || __i386__ \
1417 || ECB_GCC_AMD64 \
1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1419 || defined __s390__ || defined __s390x__ \
1420 || defined __mips__ \
1421 || defined __alpha__ \
1422 || defined __hppa__ \
1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1430 #define ECB_STDFP 1
1431 #include <string.h> /* for memcpy */
1432#else
1433 #define ECB_STDFP 0
1434#endif
1435
1436#ifndef ECB_NO_LIBM
1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1461 /* convert a float to ieee single/binary32 */
1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1463 ecb_function_ ecb_const uint32_t
1464 ecb_float_to_binary32 (float x)
1465 {
1466 uint32_t r;
1467
1468 #if ECB_STDFP
1469 memcpy (&r, &x, 4);
1470 #else
1471 /* slow emulation, works for anything but -0 */
1472 uint32_t m;
1473 int e;
1474
1475 if (x == 0e0f ) return 0x00000000U;
1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1478 if (x != x ) return 0x7fbfffffU;
1479
1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1481
1482 r = m & 0x80000000U;
1483
1484 if (r)
1485 m = -m;
1486
1487 if (e <= -126)
1488 {
1489 m &= 0xffffffU;
1490 m >>= (-125 - e);
1491 e = -126;
1492 }
1493
1494 r |= (e + 126) << 23;
1495 r |= m & 0x7fffffU;
1496 #endif
1497
1498 return r;
1499 }
1500
1501 /* converts an ieee single/binary32 to a float */
1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1503 ecb_function_ ecb_const float
1504 ecb_binary32_to_float (uint32_t x)
1505 {
1506 float r;
1507
1508 #if ECB_STDFP
1509 memcpy (&r, &x, 4);
1510 #else
1511 /* emulation, only works for normals and subnormals and +0 */
1512 int neg = x >> 31;
1513 int e = (x >> 23) & 0xffU;
1514
1515 x &= 0x7fffffU;
1516
1517 if (e)
1518 x |= 0x800000U;
1519 else
1520 e = 1;
1521
1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1524
1525 r = neg ? -r : r;
1526 #endif
1527
1528 return r;
1529 }
1530
1531 /* convert a double to ieee double/binary64 */
1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1533 ecb_function_ ecb_const uint64_t
1534 ecb_double_to_binary64 (double x)
1535 {
1536 uint64_t r;
1537
1538 #if ECB_STDFP
1539 memcpy (&r, &x, 8);
1540 #else
1541 /* slow emulation, works for anything but -0 */
1542 uint64_t m;
1543 int e;
1544
1545 if (x == 0e0 ) return 0x0000000000000000U;
1546 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1547 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1548 if (x != x ) return 0X7ff7ffffffffffffU;
1549
1550 m = frexp (x, &e) * 0x20000000000000U;
1551
1552 r = m & 0x8000000000000000;;
1553
1554 if (r)
1555 m = -m;
1556
1557 if (e <= -1022)
1558 {
1559 m &= 0x1fffffffffffffU;
1560 m >>= (-1021 - e);
1561 e = -1022;
1562 }
1563
1564 r |= ((uint64_t)(e + 1022)) << 52;
1565 r |= m & 0xfffffffffffffU;
1566 #endif
1567
1568 return r;
1569 }
1570
1571 /* converts an ieee double/binary64 to a double */
1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1573 ecb_function_ ecb_const double
1574 ecb_binary64_to_double (uint64_t x)
1575 {
1576 double r;
1577
1578 #if ECB_STDFP
1579 memcpy (&r, &x, 8);
1580 #else
1581 /* emulation, only works for normals and subnormals and +0 */
1582 int neg = x >> 63;
1583 int e = (x >> 52) & 0x7ffU;
1584
1585 x &= 0xfffffffffffffU;
1586
1587 if (e)
1588 x |= 0x10000000000000U;
1589 else
1590 e = 1;
1591
1592 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1593 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1594
1595 r = neg ? -r : r;
1596 #endif
1597
1598 return r;
1599 }
1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1617#endif
1618
1619#endif
1620
1621/* ECB.H END */
1622
1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1624/* if your architecture doesn't need memory fences, e.g. because it is
1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1627 * libev, in which cases the memory fences become nops.
1628 * alternatively, you can remove this #error and link against libpthread,
1629 * which will then provide the memory fences.
1630 */
1631# error "memory fences not defined for your architecture, please report"
1632#endif
1633
1634#ifndef ECB_MEMORY_FENCE
1635# define ECB_MEMORY_FENCE do { } while (0)
1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1638#endif
1639
1640#define inline_size ecb_inline
1641
1642#if EV_FEATURE_CODE
475# define inline_speed static inline 1643# define inline_speed ecb_inline
1644#else
1645# define inline_speed ecb_noinline static
476#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
477 1713
478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479 1715
480#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
481# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
482#else 1718#else
483# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
484#endif 1720#endif
485 1721
486#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
487#define EMPTY2(a,b) /* used to suppress some warnings */
488 1723
489typedef ev_watcher *W; 1724typedef ev_watcher *W;
490typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
491typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
492 1727
493#define ev_active(w) ((W)(w))->active 1728#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at 1729#define ev_at(w) ((WT)(w))->at
495 1730
496#if EV_USE_REALTIME 1731#if EV_USE_REALTIME
497/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1732/* sig_atomic_t is used to avoid per-thread variables or locking but still */
498/* giving it a reasonably high chance of working on typical architetcures */ 1733/* giving it a reasonably high chance of working on typical architectures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1734static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif 1735#endif
501 1736
502#if EV_USE_MONOTONIC 1737#if EV_USE_MONOTONIC
503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1738static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
505 1740
506#ifndef EV_FD_TO_WIN32_HANDLE 1741#ifndef EV_FD_TO_WIN32_HANDLE
507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1742# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
508#endif 1743#endif
509#ifndef EV_WIN32_HANDLE_TO_FD 1744#ifndef EV_WIN32_HANDLE_TO_FD
510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1745# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
511#endif 1746#endif
512#ifndef EV_WIN32_CLOSE_FD 1747#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd) 1748# define EV_WIN32_CLOSE_FD(fd) close (fd)
514#endif 1749#endif
515 1750
… …
517# include "ev_win32.c" 1752# include "ev_win32.c"
518#endif 1753#endif
519 1754
520/*****************************************************************************/ 1755/*****************************************************************************/
521 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1761/* define a suitable floor function (only used by periodics atm) */
1762
1763#if EV_USE_FLOOR
1764# include <math.h>
1765# define ev_floor(v) floor (v)
1766#else
1767
1768#include <float.h>
1769
1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1772static ev_tstamp
1773ev_floor (ev_tstamp v)
1774{
1775 /* the choice of shift factor is not terribly important */
1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1778#else
1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1780#endif
1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1790 /* argument too large for an unsigned long? then reduce it */
1791 if (ecb_expect_false (v >= shift))
1792 {
1793 ev_tstamp f;
1794
1795 if (v == v - 1.)
1796 return v; /* very large numbers are assumed to be integer */
1797
1798 f = shift * ev_floor (v * (1. / shift));
1799 return f + ev_floor (v - f);
1800 }
1801
1802 /* fits into an unsigned long */
1803 return (unsigned long)v;
1804}
1805
1806#endif
1807
1808/*****************************************************************************/
1809
1810#ifdef __linux
1811# include <sys/utsname.h>
1812#endif
1813
1814ecb_noinline ecb_cold
1815static unsigned int
1816ev_linux_version (void)
1817{
1818#ifdef __linux
1819 unsigned int v = 0;
1820 struct utsname buf;
1821 int i;
1822 char *p = buf.release;
1823
1824 if (uname (&buf))
1825 return 0;
1826
1827 for (i = 3+1; --i; )
1828 {
1829 unsigned int c = 0;
1830
1831 for (;;)
1832 {
1833 if (*p >= '0' && *p <= '9')
1834 c = c * 10 + *p++ - '0';
1835 else
1836 {
1837 p += *p == '.';
1838 break;
1839 }
1840 }
1841
1842 v = (v << 8) | c;
1843 }
1844
1845 return v;
1846#else
1847 return 0;
1848#endif
1849}
1850
1851/*****************************************************************************/
1852
1853#if EV_AVOID_STDIO
1854ecb_noinline ecb_cold
1855static void
1856ev_printerr (const char *msg)
1857{
1858 write (STDERR_FILENO, msg, strlen (msg));
1859}
1860#endif
1861
522static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
523 1863
1864ecb_cold
524void 1865void
525ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
526{ 1867{
527 syserr_cb = cb; 1868 syserr_cb = cb;
528} 1869}
529 1870
530static void noinline 1871ecb_noinline ecb_cold
1872static void
531ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
532{ 1874{
533 if (!msg) 1875 if (!msg)
534 msg = "(libev) system error"; 1876 msg = "(libev) system error";
535 1877
536 if (syserr_cb) 1878 if (syserr_cb)
537 syserr_cb (msg); 1879 syserr_cb (msg);
538 else 1880 else
539 { 1881 {
1882#if EV_AVOID_STDIO
1883 ev_printerr (msg);
1884 ev_printerr (": ");
1885 ev_printerr (strerror (errno));
1886 ev_printerr ("\n");
1887#else
540 perror (msg); 1888 perror (msg);
1889#endif
541 abort (); 1890 abort ();
542 } 1891 }
543} 1892}
544 1893
545static void * 1894static void *
546ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
547{ 1896{
548 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1900 * recently, also (at least) fedora and debian started breaking it,
1901 * despite documenting it otherwise.
551 */ 1902 */
552 1903
553 if (size) 1904 if (size)
554 return realloc (ptr, size); 1905 return realloc (ptr, size);
555 1906
556 free (ptr); 1907 free (ptr);
557 return 0; 1908 return 0;
558} 1909}
559 1910
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
561 1912
1913ecb_cold
562void 1914void
563ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
564{ 1916{
565 alloc = cb; 1917 alloc = cb;
566} 1918}
567 1919
568inline_speed void * 1920inline_speed void *
… …
570{ 1922{
571 ptr = alloc (ptr, size); 1923 ptr = alloc (ptr, size);
572 1924
573 if (!ptr && size) 1925 if (!ptr && size)
574 { 1926 {
1927#if EV_AVOID_STDIO
1928 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1929#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1930 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1931#endif
576 abort (); 1932 abort ();
577 } 1933 }
578 1934
579 return ptr; 1935 return ptr;
580} 1936}
… …
591typedef struct 1947typedef struct
592{ 1948{
593 WL head; 1949 WL head;
594 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
595 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
597 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
598#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 1956#endif
601#if EV_SELECT_IS_WINSOCKET 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 1958 SOCKET handle;
1959#endif
1960#if EV_USE_IOCP
1961 OVERLAPPED or, ow;
603#endif 1962#endif
604} ANFD; 1963} ANFD;
605 1964
606/* stores the pending event set for a given watcher */ 1965/* stores the pending event set for a given watcher */
607typedef struct 1966typedef struct
… …
649 #undef VAR 2008 #undef VAR
650 }; 2009 };
651 #include "ev_wrap.h" 2010 #include "ev_wrap.h"
652 2011
653 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
654 struct ev_loop *ev_default_loop_ptr; 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
655 2014
656#else 2015#else
657 2016
658 ev_tstamp ev_rt_now; 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
659 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
660 #include "ev_vars.h" 2019 #include "ev_vars.h"
661 #undef VAR 2020 #undef VAR
662 2021
663 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
664 2023
665#endif 2024#endif
666 2025
667#if EV_MINIMAL < 2 2026#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 2030#else
672# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 2034#endif
676 2035
677#define EVUNLOOP_RECURSE 0x80 2036#define EVBREAK_RECURSE 0x80
678 2037
679/*****************************************************************************/ 2038/*****************************************************************************/
680 2039
681#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
682ev_tstamp 2041ev_tstamp
683ev_time (void) 2042ev_time (void) EV_NOEXCEPT
684{ 2043{
685#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
686 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
687 { 2046 {
688 struct timespec ts; 2047 struct timespec ts;
689 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
690 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
691 } 2050 }
692#endif 2051#endif
693 2052
2053 {
694 struct timeval tv; 2054 struct timeval tv;
695 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
696 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
697} 2058}
698#endif 2059#endif
699 2060
700inline_size ev_tstamp 2061inline_size ev_tstamp
701get_clock (void) 2062get_clock (void)
702{ 2063{
703#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
704 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
705 { 2066 {
706 struct timespec ts; 2067 struct timespec ts;
707 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
708 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
709 } 2070 }
710#endif 2071#endif
711 2072
712 return ev_time (); 2073 return ev_time ();
713} 2074}
714 2075
715#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
716ev_tstamp 2077ev_tstamp
717ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
718{ 2079{
719 return ev_rt_now; 2080 return ev_rt_now;
720} 2081}
721#endif 2082#endif
722 2083
723void 2084void
724ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
725{ 2086{
726 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
727 { 2088 {
728#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
729 struct timespec ts; 2090 struct timespec ts;
730 2091
731 ts.tv_sec = (time_t)delay; 2092 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
735#elif defined(_WIN32) 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
736 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
737#else 2098#else
738 struct timeval tv; 2099 struct timeval tv;
739
740 tv.tv_sec = (time_t)delay;
741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
742 2100
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 2103 /* by older ones */
2104 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 2105 select (0, 0, 0, 0, &tv);
747#endif 2106#endif
748 } 2107 }
749} 2108}
750 2109
751/*****************************************************************************/ 2110/*****************************************************************************/
752 2111
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2112#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 2113
755/* find a suitable new size for the given array, */ 2114/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 2115/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 2116inline_size int
758array_nextsize (int elem, int cur, int cnt) 2117array_nextsize (int elem, int cur, int cnt)
759{ 2118{
760 int ncur = cur + 1; 2119 int ncur = cur + 1;
761 2120
762 do 2121 do
763 ncur <<= 1; 2122 ncur <<= 1;
764 while (cnt > ncur); 2123 while (cnt > ncur);
765 2124
766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2125 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2126 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
768 { 2127 {
769 ncur *= elem; 2128 ncur *= elem;
770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2129 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
771 ncur = ncur - sizeof (void *) * 4; 2130 ncur = ncur - sizeof (void *) * 4;
… …
773 } 2132 }
774 2133
775 return ncur; 2134 return ncur;
776} 2135}
777 2136
778static noinline void * 2137ecb_noinline ecb_cold
2138static void *
779array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
780{ 2140{
781 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
782 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
783} 2143}
784 2144
2145#define array_needsize_noinit(base,offset,count)
2146
785#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
786 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
787 2149
788#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
789 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
790 { \ 2152 { \
791 int ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
792 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
793 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
794 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
795 } 2157 }
796 2158
797#if 0 2159#if 0
798#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
799 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
808 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
809 2171
810/*****************************************************************************/ 2172/*****************************************************************************/
811 2173
812/* dummy callback for pending events */ 2174/* dummy callback for pending events */
813static void noinline 2175ecb_noinline
2176static void
814pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
815{ 2178{
816} 2179}
817 2180
818void noinline 2181ecb_noinline
2182void
819ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
820{ 2184{
821 W w_ = (W)w; 2185 W w_ = (W)w;
822 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
823 2187
824 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
825 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
826 else 2190 else
827 { 2191 {
828 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
829 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
830 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
831 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
832 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
833} 2199}
834 2200
835inline_speed void 2201inline_speed void
836feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
837{ 2203{
838 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
839 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
840} 2206}
841 2207
842inline_size void 2208inline_size void
843feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
857} 2223}
858 2224
859/*****************************************************************************/ 2225/*****************************************************************************/
860 2226
861inline_speed void 2227inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 2228fd_event_nocheck (EV_P_ int fd, int revents)
863{ 2229{
864 ANFD *anfd = anfds + fd; 2230 ANFD *anfd = anfds + fd;
865 ev_io *w; 2231 ev_io *w;
866 2232
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2233 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878inline_speed void 2244inline_speed void
879fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
880{ 2246{
881 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
882 2248
883 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
885} 2251}
886 2252
887void 2253void
888ev_feed_fd_event (EV_P_ int fd, int revents) 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
889{ 2255{
890 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
892} 2258}
893 2259
894/* make sure the external fd watch events are in-sync */ 2260/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 2261/* with the kernel/libev internal state */
896inline_size void 2262inline_size void
897fd_reify (EV_P) 2263fd_reify (EV_P)
898{ 2264{
899 int i; 2265 int i;
900 2266
2267#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2268 for (i = 0; i < fdchangecnt; ++i)
2269 {
2270 int fd = fdchanges [i];
2271 ANFD *anfd = anfds + fd;
2272
2273 if (anfd->reify & EV__IOFDSET && anfd->head)
2274 {
2275 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2276
2277 if (handle != anfd->handle)
2278 {
2279 unsigned long arg;
2280
2281 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2282
2283 /* handle changed, but fd didn't - we need to do it in two steps */
2284 backend_modify (EV_A_ fd, anfd->events, 0);
2285 anfd->events = 0;
2286 anfd->handle = handle;
2287 }
2288 }
2289 }
2290#endif
2291
901 for (i = 0; i < fdchangecnt; ++i) 2292 for (i = 0; i < fdchangecnt; ++i)
902 { 2293 {
903 int fd = fdchanges [i]; 2294 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 2295 ANFD *anfd = anfds + fd;
905 ev_io *w; 2296 ev_io *w;
906 2297
907 unsigned char events = 0; 2298 unsigned char o_events = anfd->events;
2299 unsigned char o_reify = anfd->reify;
908 2300
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2301 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 2302
912#if EV_SELECT_IS_WINSOCKET 2303 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
913 if (events)
914 { 2304 {
915 unsigned long arg; 2305 anfd->events = 0;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2306
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2307 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2308 anfd->events |= (unsigned char)w->events;
2309
2310 if (o_events != anfd->events)
2311 o_reify = EV__IOFDSET; /* actually |= */
918 } 2312 }
919#endif
920 2313
921 { 2314 if (o_reify & EV__IOFDSET)
922 unsigned char o_events = anfd->events;
923 unsigned char o_reify = anfd->reify;
924
925 anfd->reify = 0;
926 anfd->events = events;
927
928 if (o_events != events || o_reify & EV__IOFDSET)
929 backend_modify (EV_A_ fd, o_events, events); 2315 backend_modify (EV_A_ fd, o_events, anfd->events);
930 }
931 } 2316 }
932 2317
933 fdchangecnt = 0; 2318 fdchangecnt = 0;
934} 2319}
935 2320
936/* something about the given fd changed */ 2321/* something about the given fd changed */
937inline_size void 2322inline_size
2323void
938fd_change (EV_P_ int fd, int flags) 2324fd_change (EV_P_ int fd, int flags)
939{ 2325{
940 unsigned char reify = anfds [fd].reify; 2326 unsigned char reify = anfds [fd].reify;
941 anfds [fd].reify |= flags; 2327 anfds [fd].reify |= flags;
942 2328
943 if (expect_true (!reify)) 2329 if (ecb_expect_true (!reify))
944 { 2330 {
945 ++fdchangecnt; 2331 ++fdchangecnt;
946 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2332 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
947 fdchanges [fdchangecnt - 1] = fd; 2333 fdchanges [fdchangecnt - 1] = fd;
948 } 2334 }
949} 2335}
950 2336
951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2337/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void 2338inline_speed ecb_cold void
953fd_kill (EV_P_ int fd) 2339fd_kill (EV_P_ int fd)
954{ 2340{
955 ev_io *w; 2341 ev_io *w;
956 2342
957 while ((w = (ev_io *)anfds [fd].head)) 2343 while ((w = (ev_io *)anfds [fd].head))
… …
959 ev_io_stop (EV_A_ w); 2345 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2346 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 2347 }
962} 2348}
963 2349
964/* check whether the given fd is atcually valid, for error recovery */ 2350/* check whether the given fd is actually valid, for error recovery */
965inline_size int 2351inline_size ecb_cold int
966fd_valid (int fd) 2352fd_valid (int fd)
967{ 2353{
968#ifdef _WIN32 2354#ifdef _WIN32
969 return _get_osfhandle (fd) != -1; 2355 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 2356#else
971 return fcntl (fd, F_GETFD) != -1; 2357 return fcntl (fd, F_GETFD) != -1;
972#endif 2358#endif
973} 2359}
974 2360
975/* called on EBADF to verify fds */ 2361/* called on EBADF to verify fds */
976static void noinline 2362ecb_noinline ecb_cold
2363static void
977fd_ebadf (EV_P) 2364fd_ebadf (EV_P)
978{ 2365{
979 int fd; 2366 int fd;
980 2367
981 for (fd = 0; fd < anfdmax; ++fd) 2368 for (fd = 0; fd < anfdmax; ++fd)
… …
983 if (!fd_valid (fd) && errno == EBADF) 2370 if (!fd_valid (fd) && errno == EBADF)
984 fd_kill (EV_A_ fd); 2371 fd_kill (EV_A_ fd);
985} 2372}
986 2373
987/* called on ENOMEM in select/poll to kill some fds and retry */ 2374/* called on ENOMEM in select/poll to kill some fds and retry */
988static void noinline 2375ecb_noinline ecb_cold
2376static void
989fd_enomem (EV_P) 2377fd_enomem (EV_P)
990{ 2378{
991 int fd; 2379 int fd;
992 2380
993 for (fd = anfdmax; fd--; ) 2381 for (fd = anfdmax; fd--; )
… …
997 break; 2385 break;
998 } 2386 }
999} 2387}
1000 2388
1001/* usually called after fork if backend needs to re-arm all fds from scratch */ 2389/* usually called after fork if backend needs to re-arm all fds from scratch */
1002static void noinline 2390ecb_noinline
2391static void
1003fd_rearm_all (EV_P) 2392fd_rearm_all (EV_P)
1004{ 2393{
1005 int fd; 2394 int fd;
1006 2395
1007 for (fd = 0; fd < anfdmax; ++fd) 2396 for (fd = 0; fd < anfdmax; ++fd)
… …
1011 anfds [fd].emask = 0; 2400 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2401 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 2402 }
1014} 2403}
1015 2404
2405/* used to prepare libev internal fd's */
2406/* this is not fork-safe */
2407inline_speed void
2408fd_intern (int fd)
2409{
2410#ifdef _WIN32
2411 unsigned long arg = 1;
2412 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2413#else
2414 fcntl (fd, F_SETFD, FD_CLOEXEC);
2415 fcntl (fd, F_SETFL, O_NONBLOCK);
2416#endif
2417}
2418
1016/*****************************************************************************/ 2419/*****************************************************************************/
1017 2420
1018/* 2421/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 2422 * the heap functions want a real array index. array index 0 is guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2423 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 2424 * the branching factor of the d-tree.
1022 */ 2425 */
1023 2426
1024/* 2427/*
… …
1046 ev_tstamp minat; 2449 ev_tstamp minat;
1047 ANHE *minpos; 2450 ANHE *minpos;
1048 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2451 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1049 2452
1050 /* find minimum child */ 2453 /* find minimum child */
1051 if (expect_true (pos + DHEAP - 1 < E)) 2454 if (ecb_expect_true (pos + DHEAP - 1 < E))
1052 { 2455 {
1053 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2456 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1054 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2457 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1055 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2458 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1056 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2459 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1057 } 2460 }
1058 else if (pos < E) 2461 else if (pos < E)
1059 { 2462 {
1060 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2463 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1061 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2464 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1062 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2465 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1063 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2466 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1064 } 2467 }
1065 else 2468 else
1066 break; 2469 break;
1067 2470
1068 if (ANHE_at (he) <= minat) 2471 if (ANHE_at (he) <= minat)
… …
1076 2479
1077 heap [k] = he; 2480 heap [k] = he;
1078 ev_active (ANHE_w (he)) = k; 2481 ev_active (ANHE_w (he)) = k;
1079} 2482}
1080 2483
1081#else /* 4HEAP */ 2484#else /* not 4HEAP */
1082 2485
1083#define HEAP0 1 2486#define HEAP0 1
1084#define HPARENT(k) ((k) >> 1) 2487#define HPARENT(k) ((k) >> 1)
1085#define UPHEAP_DONE(p,k) (!(p)) 2488#define UPHEAP_DONE(p,k) (!(p))
1086 2489
… …
1172 2575
1173static ANSIG signals [EV_NSIG - 1]; 2576static ANSIG signals [EV_NSIG - 1];
1174 2577
1175/*****************************************************************************/ 2578/*****************************************************************************/
1176 2579
1177/* used to prepare libev internal fd's */ 2580#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */ 2581
2582ecb_noinline ecb_cold
2583static void
2584evpipe_init (EV_P)
2585{
2586 if (!ev_is_active (&pipe_w))
2587 {
2588 int fds [2];
2589
2590# if EV_USE_EVENTFD
2591 fds [0] = -1;
2592 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2593 if (fds [1] < 0 && errno == EINVAL)
2594 fds [1] = eventfd (0, 0);
2595
2596 if (fds [1] < 0)
2597# endif
2598 {
2599 while (pipe (fds))
2600 ev_syserr ("(libev) error creating signal/async pipe");
2601
2602 fd_intern (fds [0]);
2603 }
2604
2605 evpipe [0] = fds [0];
2606
2607 if (evpipe [1] < 0)
2608 evpipe [1] = fds [1]; /* first call, set write fd */
2609 else
2610 {
2611 /* on subsequent calls, do not change evpipe [1] */
2612 /* so that evpipe_write can always rely on its value. */
2613 /* this branch does not do anything sensible on windows, */
2614 /* so must not be executed on windows */
2615
2616 dup2 (fds [1], evpipe [1]);
2617 close (fds [1]);
2618 }
2619
2620 fd_intern (evpipe [1]);
2621
2622 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2623 ev_io_start (EV_A_ &pipe_w);
2624 ev_unref (EV_A); /* watcher should not keep loop alive */
2625 }
2626}
2627
1179inline_speed void 2628inline_speed void
1180fd_intern (int fd) 2629evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1181{ 2630{
1182#ifdef _WIN32 2631 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1183 unsigned long arg = 1;
1184 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1185#else
1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1188#endif
1189}
1190 2632
1191static void noinline 2633 if (ecb_expect_true (*flag))
1192evpipe_init (EV_P) 2634 return;
1193{ 2635
1194 if (!ev_is_active (&pipe_w)) 2636 *flag = 1;
2637 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2638
2639 pipe_write_skipped = 1;
2640
2641 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2642
2643 if (pipe_write_wanted)
1195 { 2644 {
2645 int old_errno;
2646
2647 pipe_write_skipped = 0;
2648 ECB_MEMORY_FENCE_RELEASE;
2649
2650 old_errno = errno; /* save errno because write will clobber it */
2651
1196#if EV_USE_EVENTFD 2652#if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2653 if (evpipe [0] < 0)
1198 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0);
1200
1201 if (evfd >= 0)
1202 { 2654 {
1203 evpipe [0] = -1; 2655 uint64_t counter = 1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 2656 write (evpipe [1], &counter, sizeof (uint64_t));
1205 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 2657 }
1207 else 2658 else
1208#endif 2659#endif
1209 { 2660 {
1210 while (pipe (evpipe)) 2661#ifdef _WIN32
1211 ev_syserr ("(libev) error creating signal/async pipe"); 2662 WSABUF buf;
1212 2663 DWORD sent;
1213 fd_intern (evpipe [0]); 2664 buf.buf = (char *)&buf;
1214 fd_intern (evpipe [1]); 2665 buf.len = 1;
1215 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2666 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2667#else
2668 write (evpipe [1], &(evpipe [1]), 1);
2669#endif
1216 } 2670 }
1217
1218 ev_io_start (EV_A_ &pipe_w);
1219 ev_unref (EV_A); /* watcher should not keep loop alive */
1220 }
1221}
1222
1223inline_size void
1224evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1225{
1226 if (!*flag)
1227 {
1228 int old_errno = errno; /* save errno because write might clobber it */
1229
1230 *flag = 1;
1231
1232#if EV_USE_EVENTFD
1233 if (evfd >= 0)
1234 {
1235 uint64_t counter = 1;
1236 write (evfd, &counter, sizeof (uint64_t));
1237 }
1238 else
1239#endif
1240 write (evpipe [1], &old_errno, 1);
1241 2671
1242 errno = old_errno; 2672 errno = old_errno;
1243 } 2673 }
1244} 2674}
1245 2675
… …
1248static void 2678static void
1249pipecb (EV_P_ ev_io *iow, int revents) 2679pipecb (EV_P_ ev_io *iow, int revents)
1250{ 2680{
1251 int i; 2681 int i;
1252 2682
2683 if (revents & EV_READ)
2684 {
1253#if EV_USE_EVENTFD 2685#if EV_USE_EVENTFD
1254 if (evfd >= 0) 2686 if (evpipe [0] < 0)
1255 { 2687 {
1256 uint64_t counter; 2688 uint64_t counter;
1257 read (evfd, &counter, sizeof (uint64_t)); 2689 read (evpipe [1], &counter, sizeof (uint64_t));
1258 } 2690 }
1259 else 2691 else
1260#endif 2692#endif
1261 { 2693 {
1262 char dummy; 2694 char dummy[4];
2695#ifdef _WIN32
2696 WSABUF buf;
2697 DWORD recvd;
2698 DWORD flags = 0;
2699 buf.buf = dummy;
2700 buf.len = sizeof (dummy);
2701 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2702#else
1263 read (evpipe [0], &dummy, 1); 2703 read (evpipe [0], &dummy, sizeof (dummy));
2704#endif
2705 }
1264 } 2706 }
1265 2707
2708 pipe_write_skipped = 0;
2709
2710 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2711
2712#if EV_SIGNAL_ENABLE
1266 if (sig_pending) 2713 if (sig_pending)
1267 { 2714 {
1268 sig_pending = 0; 2715 sig_pending = 0;
1269 2716
2717 ECB_MEMORY_FENCE;
2718
1270 for (i = EV_NSIG - 1; i--; ) 2719 for (i = EV_NSIG - 1; i--; )
1271 if (expect_false (signals [i].pending)) 2720 if (ecb_expect_false (signals [i].pending))
1272 ev_feed_signal_event (EV_A_ i + 1); 2721 ev_feed_signal_event (EV_A_ i + 1);
1273 } 2722 }
2723#endif
1274 2724
1275#if EV_ASYNC_ENABLE 2725#if EV_ASYNC_ENABLE
1276 if (async_pending) 2726 if (async_pending)
1277 { 2727 {
1278 async_pending = 0; 2728 async_pending = 0;
2729
2730 ECB_MEMORY_FENCE;
1279 2731
1280 for (i = asynccnt; i--; ) 2732 for (i = asynccnt; i--; )
1281 if (asyncs [i]->sent) 2733 if (asyncs [i]->sent)
1282 { 2734 {
1283 asyncs [i]->sent = 0; 2735 asyncs [i]->sent = 0;
2736 ECB_MEMORY_FENCE_RELEASE;
1284 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2737 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1285 } 2738 }
1286 } 2739 }
1287#endif 2740#endif
1288} 2741}
1289 2742
1290/*****************************************************************************/ 2743/*****************************************************************************/
1291 2744
2745void
2746ev_feed_signal (int signum) EV_NOEXCEPT
2747{
2748#if EV_MULTIPLICITY
2749 EV_P;
2750 ECB_MEMORY_FENCE_ACQUIRE;
2751 EV_A = signals [signum - 1].loop;
2752
2753 if (!EV_A)
2754 return;
2755#endif
2756
2757 signals [signum - 1].pending = 1;
2758 evpipe_write (EV_A_ &sig_pending);
2759}
2760
1292static void 2761static void
1293ev_sighandler (int signum) 2762ev_sighandler (int signum)
1294{ 2763{
1295#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop;
1297#endif
1298
1299#if _WIN32 2764#ifdef _WIN32
1300 signal (signum, ev_sighandler); 2765 signal (signum, ev_sighandler);
1301#endif 2766#endif
1302 2767
1303 signals [signum - 1].pending = 1; 2768 ev_feed_signal (signum);
1304 evpipe_write (EV_A_ &sig_pending);
1305} 2769}
1306 2770
1307void noinline 2771ecb_noinline
2772void
1308ev_feed_signal_event (EV_P_ int signum) 2773ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1309{ 2774{
1310 WL w; 2775 WL w;
1311 2776
1312 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2777 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1313 return; 2778 return;
1314 2779
1315 --signum; 2780 --signum;
1316 2781
1317#if EV_MULTIPLICITY 2782#if EV_MULTIPLICITY
1318 /* it is permissible to try to feed a signal to the wrong loop */ 2783 /* it is permissible to try to feed a signal to the wrong loop */
1319 /* or, likely more useful, feeding a signal nobody is waiting for */ 2784 /* or, likely more useful, feeding a signal nobody is waiting for */
1320 2785
1321 if (expect_false (signals [signum].loop != EV_A)) 2786 if (ecb_expect_false (signals [signum].loop != EV_A))
1322 return; 2787 return;
1323#endif 2788#endif
1324 2789
1325 signals [signum].pending = 0; 2790 signals [signum].pending = 0;
2791 ECB_MEMORY_FENCE_RELEASE;
1326 2792
1327 for (w = signals [signum].head; w; w = w->next) 2793 for (w = signals [signum].head; w; w = w->next)
1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2794 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1329} 2795}
1330 2796
… …
1346 break; 2812 break;
1347 } 2813 }
1348} 2814}
1349#endif 2815#endif
1350 2816
2817#endif
2818
1351/*****************************************************************************/ 2819/*****************************************************************************/
1352 2820
2821#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 2822static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 2823
1357static ev_signal childev; 2824static ev_signal childev;
1358 2825
1359#ifndef WIFCONTINUED 2826#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 2827# define WIFCONTINUED(status) 0
… …
1365child_reap (EV_P_ int chain, int pid, int status) 2832child_reap (EV_P_ int chain, int pid, int status)
1366{ 2833{
1367 ev_child *w; 2834 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2835 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 2836
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2837 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 2838 {
1372 if ((w->pid == pid || !w->pid) 2839 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 2840 && (!traced || (w->flags & 1)))
1374 { 2841 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2842 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1400 /* make sure we are called again until all children have been reaped */ 2867 /* make sure we are called again until all children have been reaped */
1401 /* we need to do it this way so that the callback gets called before we continue */ 2868 /* we need to do it this way so that the callback gets called before we continue */
1402 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2869 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 2870
1404 child_reap (EV_A_ pid, pid, status); 2871 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 2872 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2873 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 2874}
1408 2875
1409#endif 2876#endif
1410 2877
1411/*****************************************************************************/ 2878/*****************************************************************************/
1412 2879
2880#if EV_USE_TIMERFD
2881
2882static void periodics_reschedule (EV_P);
2883
2884static void
2885timerfdcb (EV_P_ ev_io *iow, int revents)
2886{
2887 struct itimerspec its = { 0 };
2888
2889 /* since we can't easily come zup with a (portable) maximum value of time_t,
2890 * we wake up once per month, which hopefully is rare enough to not
2891 * be a problem. */
2892 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2893 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2894
2895 ev_rt_now = ev_time ();
2896 /* periodics_reschedule only needs ev_rt_now */
2897 /* but maybe in the future we want the full treatment. */
2898 /*
2899 now_floor = EV_TS_CONST (0.);
2900 time_update (EV_A_ EV_TSTAMP_HUGE);
2901 */
2902 periodics_reschedule (EV_A);
2903}
2904
2905ecb_noinline ecb_cold
2906static void
2907evtimerfd_init (EV_P)
2908{
2909 if (!ev_is_active (&timerfd_w))
2910 {
2911 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2912
2913 if (timerfd >= 0)
2914 {
2915 fd_intern (timerfd); /* just to be sure */
2916
2917 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2918 ev_set_priority (&sigfd_w, EV_MINPRI);
2919 ev_io_start (EV_A_ &timerfd_w);
2920 ev_unref (EV_A); /* watcher should not keep loop alive */
2921
2922 /* (re-) arm timer */
2923 timerfdcb (EV_A_ 0, 0);
2924 }
2925 }
2926}
2927
2928#endif
2929
2930/*****************************************************************************/
2931
2932#if EV_USE_IOCP
2933# include "ev_iocp.c"
2934#endif
1413#if EV_USE_PORT 2935#if EV_USE_PORT
1414# include "ev_port.c" 2936# include "ev_port.c"
1415#endif 2937#endif
1416#if EV_USE_KQUEUE 2938#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 2939# include "ev_kqueue.c"
1418#endif 2940#endif
1419#if EV_USE_EPOLL 2941#if EV_USE_EPOLL
1420# include "ev_epoll.c" 2942# include "ev_epoll.c"
1421#endif 2943#endif
2944#if EV_USE_LINUXAIO
2945# include "ev_linuxaio.c"
2946#endif
2947#if EV_USE_IOURING
2948# include "ev_iouring.c"
2949#endif
1422#if EV_USE_POLL 2950#if EV_USE_POLL
1423# include "ev_poll.c" 2951# include "ev_poll.c"
1424#endif 2952#endif
1425#if EV_USE_SELECT 2953#if EV_USE_SELECT
1426# include "ev_select.c" 2954# include "ev_select.c"
1427#endif 2955#endif
1428 2956
1429int 2957ecb_cold int
1430ev_version_major (void) 2958ev_version_major (void) EV_NOEXCEPT
1431{ 2959{
1432 return EV_VERSION_MAJOR; 2960 return EV_VERSION_MAJOR;
1433} 2961}
1434 2962
1435int 2963ecb_cold int
1436ev_version_minor (void) 2964ev_version_minor (void) EV_NOEXCEPT
1437{ 2965{
1438 return EV_VERSION_MINOR; 2966 return EV_VERSION_MINOR;
1439} 2967}
1440 2968
1441/* return true if we are running with elevated privileges and should ignore env variables */ 2969/* return true if we are running with elevated privileges and should ignore env variables */
1442int inline_size 2970inline_size ecb_cold int
1443enable_secure (void) 2971enable_secure (void)
1444{ 2972{
1445#ifdef _WIN32 2973#ifdef _WIN32
1446 return 0; 2974 return 0;
1447#else 2975#else
1448 return getuid () != geteuid () 2976 return getuid () != geteuid ()
1449 || getgid () != getegid (); 2977 || getgid () != getegid ();
1450#endif 2978#endif
1451} 2979}
1452 2980
2981ecb_cold
1453unsigned int 2982unsigned int
1454ev_supported_backends (void) 2983ev_supported_backends (void) EV_NOEXCEPT
1455{ 2984{
1456 unsigned int flags = 0; 2985 unsigned int flags = 0;
1457 2986
1458 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2987 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1459 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2988 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1460 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2989 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2990 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2991 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1461 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2992 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1462 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2993 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1463 2994
1464 return flags; 2995 return flags;
1465} 2996}
1466 2997
2998ecb_cold
1467unsigned int 2999unsigned int
1468ev_recommended_backends (void) 3000ev_recommended_backends (void) EV_NOEXCEPT
1469{ 3001{
1470 unsigned int flags = ev_supported_backends (); 3002 unsigned int flags = ev_supported_backends ();
1471 3003
1472#ifndef __NetBSD__ 3004#ifndef __NetBSD__
1473 /* kqueue is borked on everything but netbsd apparently */ 3005 /* kqueue is borked on everything but netbsd apparently */
… …
1477#ifdef __APPLE__ 3009#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 3010 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 3011 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 3012 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 3013#endif
3014#ifdef __FreeBSD__
3015 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
3016#endif
3017
3018 /* TODO: linuxaio is very experimental */
3019#if !EV_RECOMMEND_LINUXAIO
3020 flags &= ~EVBACKEND_LINUXAIO;
3021#endif
3022 /* TODO: linuxaio is super experimental */
3023#if !EV_RECOMMEND_IOURING
3024 flags &= ~EVBACKEND_IOURING;
3025#endif
1482 3026
1483 return flags; 3027 return flags;
1484} 3028}
1485 3029
3030ecb_cold
1486unsigned int 3031unsigned int
1487ev_embeddable_backends (void) 3032ev_embeddable_backends (void) EV_NOEXCEPT
1488{ 3033{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3034 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1490 3035
1491 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3036 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1492 /* please fix it and tell me how to detect the fix */ 3037 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1493 flags &= ~EVBACKEND_EPOLL; 3038 flags &= ~EVBACKEND_EPOLL;
3039
3040 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3041
3042 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3043 * because our backend_fd is the epoll fd we need as fallback.
3044 * if the kernel ever is fixed, this might change...
3045 */
1494 3046
1495 return flags; 3047 return flags;
1496} 3048}
1497 3049
1498unsigned int 3050unsigned int
1499ev_backend (EV_P) 3051ev_backend (EV_P) EV_NOEXCEPT
1500{ 3052{
1501 return backend; 3053 return backend;
1502} 3054}
1503 3055
1504#if EV_MINIMAL < 2 3056#if EV_FEATURE_API
1505unsigned int 3057unsigned int
1506ev_loop_count (EV_P) 3058ev_iteration (EV_P) EV_NOEXCEPT
1507{ 3059{
1508 return loop_count; 3060 return loop_count;
1509} 3061}
1510 3062
1511unsigned int 3063unsigned int
1512ev_loop_depth (EV_P) 3064ev_depth (EV_P) EV_NOEXCEPT
1513{ 3065{
1514 return loop_depth; 3066 return loop_depth;
1515} 3067}
1516 3068
1517void 3069void
1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3070ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1519{ 3071{
1520 io_blocktime = interval; 3072 io_blocktime = interval;
1521} 3073}
1522 3074
1523void 3075void
1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3076ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1525{ 3077{
1526 timeout_blocktime = interval; 3078 timeout_blocktime = interval;
1527} 3079}
1528 3080
1529void 3081void
1530ev_set_userdata (EV_P_ void *data) 3082ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1531{ 3083{
1532 userdata = data; 3084 userdata = data;
1533} 3085}
1534 3086
1535void * 3087void *
1536ev_userdata (EV_P) 3088ev_userdata (EV_P) EV_NOEXCEPT
1537{ 3089{
1538 return userdata; 3090 return userdata;
1539} 3091}
1540 3092
3093void
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3094ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1542{ 3095{
1543 invoke_cb = invoke_pending_cb; 3096 invoke_cb = invoke_pending_cb;
1544} 3097}
1545 3098
3099void
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3100ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1547{ 3101{
1548 release_cb = release; 3102 release_cb = release;
1549 acquire_cb = acquire; 3103 acquire_cb = acquire;
1550} 3104}
1551#endif 3105#endif
1552 3106
1553/* initialise a loop structure, must be zero-initialised */ 3107/* initialise a loop structure, must be zero-initialised */
1554static void noinline 3108ecb_noinline ecb_cold
3109static void
1555loop_init (EV_P_ unsigned int flags) 3110loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1556{ 3111{
1557 if (!backend) 3112 if (!backend)
1558 { 3113 {
3114 origflags = flags;
3115
1559#if EV_USE_REALTIME 3116#if EV_USE_REALTIME
1560 if (!have_realtime) 3117 if (!have_realtime)
1561 { 3118 {
1562 struct timespec ts; 3119 struct timespec ts;
1563 3120
… …
1585 if (!(flags & EVFLAG_NOENV) 3142 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure () 3143 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS")) 3144 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS")); 3145 flags = atoi (getenv ("LIBEV_FLAGS"));
1589 3146
1590 ev_rt_now = ev_time (); 3147 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 3148 mn_now = get_clock ();
1592 now_floor = mn_now; 3149 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 3150 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 3151#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 3152 invoke_cb = ev_invoke_pending;
1596#endif 3153#endif
1597 3154
1598 io_blocktime = 0.; 3155 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 3156 timeout_blocktime = 0.;
1600 backend = 0; 3157 backend = 0;
1601 backend_fd = -1; 3158 backend_fd = -1;
1602 sig_pending = 0; 3159 sig_pending = 0;
1603#if EV_ASYNC_ENABLE 3160#if EV_ASYNC_ENABLE
1604 async_pending = 0; 3161 async_pending = 0;
1605#endif 3162#endif
3163 pipe_write_skipped = 0;
3164 pipe_write_wanted = 0;
3165 evpipe [0] = -1;
3166 evpipe [1] = -1;
1606#if EV_USE_INOTIFY 3167#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3168 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 3169#endif
1609#if EV_USE_SIGNALFD 3170#if EV_USE_SIGNALFD
3171 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3172#endif
3173#if EV_USE_TIMERFD
1610 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 3174 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
1611#endif 3175#endif
1612 3176
1613 if (!(flags & 0x0000ffffU)) 3177 if (!(flags & EVBACKEND_MASK))
1614 flags |= ev_recommended_backends (); 3178 flags |= ev_recommended_backends ();
1615 3179
3180#if EV_USE_IOCP
3181 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3182#endif
1616#if EV_USE_PORT 3183#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3184 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 3185#endif
1619#if EV_USE_KQUEUE 3186#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3187 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3188#endif
3189#if EV_USE_IOURING
3190 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3191#endif
3192#if EV_USE_LINUXAIO
3193 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1621#endif 3194#endif
1622#if EV_USE_EPOLL 3195#if EV_USE_EPOLL
1623 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3196 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1624#endif 3197#endif
1625#if EV_USE_POLL 3198#if EV_USE_POLL
1626 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3199 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1627#endif 3200#endif
1628#if EV_USE_SELECT 3201#if EV_USE_SELECT
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3202 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1630#endif 3203#endif
1631 3204
1632 ev_prepare_init (&pending_w, pendingcb); 3205 ev_prepare_init (&pending_w, pendingcb);
1633 3206
3207#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 3208 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 3209 ev_set_priority (&pipe_w, EV_MAXPRI);
3210#endif
1636 } 3211 }
1637} 3212}
1638 3213
1639/* free up a loop structure */ 3214/* free up a loop structure */
1640static void noinline 3215ecb_cold
3216void
1641loop_destroy (EV_P) 3217ev_loop_destroy (EV_P)
1642{ 3218{
1643 int i; 3219 int i;
3220
3221#if EV_MULTIPLICITY
3222 /* mimic free (0) */
3223 if (!EV_A)
3224 return;
3225#endif
3226
3227#if EV_CLEANUP_ENABLE
3228 /* queue cleanup watchers (and execute them) */
3229 if (ecb_expect_false (cleanupcnt))
3230 {
3231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3232 EV_INVOKE_PENDING;
3233 }
3234#endif
3235
3236#if EV_CHILD_ENABLE
3237 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3238 {
3239 ev_ref (EV_A); /* child watcher */
3240 ev_signal_stop (EV_A_ &childev);
3241 }
3242#endif
1644 3243
1645 if (ev_is_active (&pipe_w)) 3244 if (ev_is_active (&pipe_w))
1646 { 3245 {
1647 /*ev_ref (EV_A);*/ 3246 /*ev_ref (EV_A);*/
1648 /*ev_io_stop (EV_A_ &pipe_w);*/ 3247 /*ev_io_stop (EV_A_ &pipe_w);*/
1649 3248
1650#if EV_USE_EVENTFD
1651 if (evfd >= 0)
1652 close (evfd);
1653#endif
1654
1655 if (evpipe [0] >= 0)
1656 {
1657 EV_WIN32_CLOSE_FD (evpipe [0]); 3249 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1658 EV_WIN32_CLOSE_FD (evpipe [1]); 3250 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1659 }
1660 } 3251 }
1661 3252
1662#if EV_USE_SIGNALFD 3253#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w)) 3254 if (ev_is_active (&sigfd_w))
1664 close (sigfd); 3255 close (sigfd);
1665#endif 3256#endif
1666 3257
3258#if EV_USE_TIMERFD
3259 if (ev_is_active (&timerfd_w))
3260 close (timerfd);
3261#endif
3262
1667#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
1668 if (fs_fd >= 0) 3264 if (fs_fd >= 0)
1669 close (fs_fd); 3265 close (fs_fd);
1670#endif 3266#endif
1671 3267
1672 if (backend_fd >= 0) 3268 if (backend_fd >= 0)
1673 close (backend_fd); 3269 close (backend_fd);
1674 3270
3271#if EV_USE_IOCP
3272 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3273#endif
1675#if EV_USE_PORT 3274#if EV_USE_PORT
1676 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3275 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1677#endif 3276#endif
1678#if EV_USE_KQUEUE 3277#if EV_USE_KQUEUE
1679 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3278 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3279#endif
3280#if EV_USE_IOURING
3281 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3282#endif
3283#if EV_USE_LINUXAIO
3284 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1680#endif 3285#endif
1681#if EV_USE_EPOLL 3286#if EV_USE_EPOLL
1682 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3287 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1683#endif 3288#endif
1684#if EV_USE_POLL 3289#if EV_USE_POLL
1685 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3290 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1686#endif 3291#endif
1687#if EV_USE_SELECT 3292#if EV_USE_SELECT
1688 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3293 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1689#endif 3294#endif
1690 3295
1691 for (i = NUMPRI; i--; ) 3296 for (i = NUMPRI; i--; )
1692 { 3297 {
1693 array_free (pending, [i]); 3298 array_free (pending, [i]);
… …
1706 array_free (periodic, EMPTY); 3311 array_free (periodic, EMPTY);
1707#endif 3312#endif
1708#if EV_FORK_ENABLE 3313#if EV_FORK_ENABLE
1709 array_free (fork, EMPTY); 3314 array_free (fork, EMPTY);
1710#endif 3315#endif
3316#if EV_CLEANUP_ENABLE
3317 array_free (cleanup, EMPTY);
3318#endif
1711 array_free (prepare, EMPTY); 3319 array_free (prepare, EMPTY);
1712 array_free (check, EMPTY); 3320 array_free (check, EMPTY);
1713#if EV_ASYNC_ENABLE 3321#if EV_ASYNC_ENABLE
1714 array_free (async, EMPTY); 3322 array_free (async, EMPTY);
1715#endif 3323#endif
1716 3324
1717 backend = 0; 3325 backend = 0;
3326
3327#if EV_MULTIPLICITY
3328 if (ev_is_default_loop (EV_A))
3329#endif
3330 ev_default_loop_ptr = 0;
3331#if EV_MULTIPLICITY
3332 else
3333 ev_free (EV_A);
3334#endif
1718} 3335}
1719 3336
1720#if EV_USE_INOTIFY 3337#if EV_USE_INOTIFY
1721inline_size void infy_fork (EV_P); 3338inline_size void infy_fork (EV_P);
1722#endif 3339#endif
1723 3340
1724inline_size void 3341inline_size void
1725loop_fork (EV_P) 3342loop_fork (EV_P)
1726{ 3343{
1727#if EV_USE_PORT 3344#if EV_USE_PORT
1728 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3345 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1729#endif 3346#endif
1730#if EV_USE_KQUEUE 3347#if EV_USE_KQUEUE
1731 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3348 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3349#endif
3350#if EV_USE_IOURING
3351 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3352#endif
3353#if EV_USE_LINUXAIO
3354 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1732#endif 3355#endif
1733#if EV_USE_EPOLL 3356#if EV_USE_EPOLL
1734 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3357 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1735#endif 3358#endif
1736#if EV_USE_INOTIFY 3359#if EV_USE_INOTIFY
1737 infy_fork (EV_A); 3360 infy_fork (EV_A);
1738#endif 3361#endif
1739 3362
3363 if (postfork != 2)
3364 {
3365 #if EV_USE_SIGNALFD
3366 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3367 #endif
3368
3369 #if EV_USE_TIMERFD
3370 if (ev_is_active (&timerfd_w))
3371 {
3372 ev_ref (EV_A);
3373 ev_io_stop (EV_A_ &timerfd_w);
3374
3375 close (timerfd);
3376 timerfd = -2;
3377
3378 evtimerfd_init (EV_A);
3379 /* reschedule periodics, in case we missed something */
3380 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3381 }
3382 #endif
3383
3384 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1740 if (ev_is_active (&pipe_w)) 3385 if (ev_is_active (&pipe_w))
1741 { 3386 {
1742 /* this "locks" the handlers against writing to the pipe */ 3387 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1743 /* while we modify the fd vars */ 3388
1744 sig_pending = 1;
1745#if EV_ASYNC_ENABLE
1746 async_pending = 1;
1747#endif
1748
1749 ev_ref (EV_A); 3389 ev_ref (EV_A);
1750 ev_io_stop (EV_A_ &pipe_w); 3390 ev_io_stop (EV_A_ &pipe_w);
1751 3391
1752#if EV_USE_EVENTFD
1753 if (evfd >= 0)
1754 close (evfd);
1755#endif
1756
1757 if (evpipe [0] >= 0) 3392 if (evpipe [0] >= 0)
1758 {
1759 EV_WIN32_CLOSE_FD (evpipe [0]); 3393 EV_WIN32_CLOSE_FD (evpipe [0]);
1760 EV_WIN32_CLOSE_FD (evpipe [1]); 3394
3395 evpipe_init (EV_A);
3396 /* iterate over everything, in case we missed something before */
3397 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1761 } 3398 }
1762 3399 #endif
1763 evpipe_init (EV_A);
1764 /* now iterate over everything, in case we missed something */
1765 pipecb (EV_A_ &pipe_w, EV_READ);
1766 } 3400 }
1767 3401
1768 postfork = 0; 3402 postfork = 0;
1769} 3403}
1770 3404
1771#if EV_MULTIPLICITY 3405#if EV_MULTIPLICITY
1772 3406
3407ecb_cold
1773struct ev_loop * 3408struct ev_loop *
1774ev_loop_new (unsigned int flags) 3409ev_loop_new (unsigned int flags) EV_NOEXCEPT
1775{ 3410{
1776 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3411 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1777 3412
1778 memset (EV_A, 0, sizeof (struct ev_loop)); 3413 memset (EV_A, 0, sizeof (struct ev_loop));
1779 loop_init (EV_A_ flags); 3414 loop_init (EV_A_ flags);
1780 3415
1781 if (ev_backend (EV_A)) 3416 if (ev_backend (EV_A))
1782 return EV_A; 3417 return EV_A;
1783 3418
3419 ev_free (EV_A);
1784 return 0; 3420 return 0;
1785} 3421}
1786 3422
1787void
1788ev_loop_destroy (EV_P)
1789{
1790 loop_destroy (EV_A);
1791 ev_free (loop);
1792}
1793
1794void
1795ev_loop_fork (EV_P)
1796{
1797 postfork = 1; /* must be in line with ev_default_fork */
1798}
1799#endif /* multiplicity */ 3423#endif /* multiplicity */
1800 3424
1801#if EV_VERIFY 3425#if EV_VERIFY
1802static void noinline 3426ecb_noinline ecb_cold
3427static void
1803verify_watcher (EV_P_ W w) 3428verify_watcher (EV_P_ W w)
1804{ 3429{
1805 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3430 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1806 3431
1807 if (w->pending) 3432 if (w->pending)
1808 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3433 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1809} 3434}
1810 3435
1811static void noinline 3436ecb_noinline ecb_cold
3437static void
1812verify_heap (EV_P_ ANHE *heap, int N) 3438verify_heap (EV_P_ ANHE *heap, int N)
1813{ 3439{
1814 int i; 3440 int i;
1815 3441
1816 for (i = HEAP0; i < N + HEAP0; ++i) 3442 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1821 3447
1822 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3448 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1823 } 3449 }
1824} 3450}
1825 3451
1826static void noinline 3452ecb_noinline ecb_cold
3453static void
1827array_verify (EV_P_ W *ws, int cnt) 3454array_verify (EV_P_ W *ws, int cnt)
1828{ 3455{
1829 while (cnt--) 3456 while (cnt--)
1830 { 3457 {
1831 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3458 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1832 verify_watcher (EV_A_ ws [cnt]); 3459 verify_watcher (EV_A_ ws [cnt]);
1833 } 3460 }
1834} 3461}
1835#endif 3462#endif
1836 3463
1837#if EV_MINIMAL < 2 3464#if EV_FEATURE_API
1838void 3465void ecb_cold
1839ev_loop_verify (EV_P) 3466ev_verify (EV_P) EV_NOEXCEPT
1840{ 3467{
1841#if EV_VERIFY 3468#if EV_VERIFY
1842 int i; 3469 int i;
1843 WL w; 3470 WL w, w2;
1844 3471
1845 assert (activecnt >= -1); 3472 assert (activecnt >= -1);
1846 3473
1847 assert (fdchangemax >= fdchangecnt); 3474 assert (fdchangemax >= fdchangecnt);
1848 for (i = 0; i < fdchangecnt; ++i) 3475 for (i = 0; i < fdchangecnt; ++i)
1849 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3476 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1850 3477
1851 assert (anfdmax >= 0); 3478 assert (anfdmax >= 0);
1852 for (i = 0; i < anfdmax; ++i) 3479 for (i = 0; i < anfdmax; ++i)
3480 {
3481 int j = 0;
3482
1853 for (w = anfds [i].head; w; w = w->next) 3483 for (w = w2 = anfds [i].head; w; w = w->next)
1854 { 3484 {
1855 verify_watcher (EV_A_ (W)w); 3485 verify_watcher (EV_A_ (W)w);
3486
3487 if (j++ & 1)
3488 {
3489 assert (("libev: io watcher list contains a loop", w != w2));
3490 w2 = w2->next;
3491 }
3492
1856 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3493 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1857 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3494 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1858 } 3495 }
3496 }
1859 3497
1860 assert (timermax >= timercnt); 3498 assert (timermax >= timercnt);
1861 verify_heap (EV_A_ timers, timercnt); 3499 verify_heap (EV_A_ timers, timercnt);
1862 3500
1863#if EV_PERIODIC_ENABLE 3501#if EV_PERIODIC_ENABLE
… …
1878#if EV_FORK_ENABLE 3516#if EV_FORK_ENABLE
1879 assert (forkmax >= forkcnt); 3517 assert (forkmax >= forkcnt);
1880 array_verify (EV_A_ (W *)forks, forkcnt); 3518 array_verify (EV_A_ (W *)forks, forkcnt);
1881#endif 3519#endif
1882 3520
3521#if EV_CLEANUP_ENABLE
3522 assert (cleanupmax >= cleanupcnt);
3523 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3524#endif
3525
1883#if EV_ASYNC_ENABLE 3526#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt); 3527 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt); 3528 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif 3529#endif
1887 3530
3531#if EV_PREPARE_ENABLE
1888 assert (preparemax >= preparecnt); 3532 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt); 3533 array_verify (EV_A_ (W *)prepares, preparecnt);
3534#endif
1890 3535
3536#if EV_CHECK_ENABLE
1891 assert (checkmax >= checkcnt); 3537 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt); 3538 array_verify (EV_A_ (W *)checks, checkcnt);
3539#endif
1893 3540
1894# if 0 3541# if 0
3542#if EV_CHILD_ENABLE
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3543 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3544 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3545#endif
1897# endif 3546# endif
1898#endif 3547#endif
1899} 3548}
1900#endif 3549#endif
1901 3550
1902#if EV_MULTIPLICITY 3551#if EV_MULTIPLICITY
3552ecb_cold
1903struct ev_loop * 3553struct ev_loop *
1904ev_default_loop_init (unsigned int flags)
1905#else 3554#else
1906int 3555int
3556#endif
1907ev_default_loop (unsigned int flags) 3557ev_default_loop (unsigned int flags) EV_NOEXCEPT
1908#endif
1909{ 3558{
1910 if (!ev_default_loop_ptr) 3559 if (!ev_default_loop_ptr)
1911 { 3560 {
1912#if EV_MULTIPLICITY 3561#if EV_MULTIPLICITY
1913 EV_P = ev_default_loop_ptr = &default_loop_struct; 3562 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1917 3566
1918 loop_init (EV_A_ flags); 3567 loop_init (EV_A_ flags);
1919 3568
1920 if (ev_backend (EV_A)) 3569 if (ev_backend (EV_A))
1921 { 3570 {
1922#ifndef _WIN32 3571#if EV_CHILD_ENABLE
1923 ev_signal_init (&childev, childcb, SIGCHLD); 3572 ev_signal_init (&childev, childcb, SIGCHLD);
1924 ev_set_priority (&childev, EV_MAXPRI); 3573 ev_set_priority (&childev, EV_MAXPRI);
1925 ev_signal_start (EV_A_ &childev); 3574 ev_signal_start (EV_A_ &childev);
1926 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3575 ev_unref (EV_A); /* child watcher should not keep loop alive */
1927#endif 3576#endif
… …
1932 3581
1933 return ev_default_loop_ptr; 3582 return ev_default_loop_ptr;
1934} 3583}
1935 3584
1936void 3585void
1937ev_default_destroy (void) 3586ev_loop_fork (EV_P) EV_NOEXCEPT
1938{ 3587{
1939#if EV_MULTIPLICITY 3588 postfork = 1;
1940 EV_P = ev_default_loop_ptr;
1941#endif
1942
1943 ev_default_loop_ptr = 0;
1944
1945#ifndef _WIN32
1946 ev_ref (EV_A); /* child watcher */
1947 ev_signal_stop (EV_A_ &childev);
1948#endif
1949
1950 loop_destroy (EV_A);
1951}
1952
1953void
1954ev_default_fork (void)
1955{
1956#if EV_MULTIPLICITY
1957 EV_P = ev_default_loop_ptr;
1958#endif
1959
1960 postfork = 1; /* must be in line with ev_loop_fork */
1961} 3589}
1962 3590
1963/*****************************************************************************/ 3591/*****************************************************************************/
1964 3592
1965void 3593void
… …
1967{ 3595{
1968 EV_CB_INVOKE ((W)w, revents); 3596 EV_CB_INVOKE ((W)w, revents);
1969} 3597}
1970 3598
1971unsigned int 3599unsigned int
1972ev_pending_count (EV_P) 3600ev_pending_count (EV_P) EV_NOEXCEPT
1973{ 3601{
1974 int pri; 3602 int pri;
1975 unsigned int count = 0; 3603 unsigned int count = 0;
1976 3604
1977 for (pri = NUMPRI; pri--; ) 3605 for (pri = NUMPRI; pri--; )
1978 count += pendingcnt [pri]; 3606 count += pendingcnt [pri];
1979 3607
1980 return count; 3608 return count;
1981} 3609}
1982 3610
1983void noinline 3611ecb_noinline
3612void
1984ev_invoke_pending (EV_P) 3613ev_invoke_pending (EV_P)
1985{ 3614{
1986 int pri; 3615 pendingpri = NUMPRI;
1987 3616
1988 for (pri = NUMPRI; pri--; ) 3617 do
3618 {
3619 --pendingpri;
3620
3621 /* pendingpri possibly gets modified in the inner loop */
1989 while (pendingcnt [pri]) 3622 while (pendingcnt [pendingpri])
1990 { 3623 {
1991 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3624 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1992 3625
1993 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1994 /* ^ this is no longer true, as pending_w could be here */
1995
1996 p->w->pending = 0; 3626 p->w->pending = 0;
1997 EV_CB_INVOKE (p->w, p->events); 3627 EV_CB_INVOKE (p->w, p->events);
1998 EV_FREQUENT_CHECK; 3628 EV_FREQUENT_CHECK;
1999 } 3629 }
3630 }
3631 while (pendingpri);
2000} 3632}
2001 3633
2002#if EV_IDLE_ENABLE 3634#if EV_IDLE_ENABLE
2003/* make idle watchers pending. this handles the "call-idle */ 3635/* make idle watchers pending. this handles the "call-idle */
2004/* only when higher priorities are idle" logic */ 3636/* only when higher priorities are idle" logic */
2005inline_size void 3637inline_size void
2006idle_reify (EV_P) 3638idle_reify (EV_P)
2007{ 3639{
2008 if (expect_false (idleall)) 3640 if (ecb_expect_false (idleall))
2009 { 3641 {
2010 int pri; 3642 int pri;
2011 3643
2012 for (pri = NUMPRI; pri--; ) 3644 for (pri = NUMPRI; pri--; )
2013 { 3645 {
… …
2043 { 3675 {
2044 ev_at (w) += w->repeat; 3676 ev_at (w) += w->repeat;
2045 if (ev_at (w) < mn_now) 3677 if (ev_at (w) < mn_now)
2046 ev_at (w) = mn_now; 3678 ev_at (w) = mn_now;
2047 3679
2048 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3680 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2049 3681
2050 ANHE_at_cache (timers [HEAP0]); 3682 ANHE_at_cache (timers [HEAP0]);
2051 downheap (timers, timercnt, HEAP0); 3683 downheap (timers, timercnt, HEAP0);
2052 } 3684 }
2053 else 3685 else
… …
2056 EV_FREQUENT_CHECK; 3688 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w); 3689 feed_reverse (EV_A_ (W)w);
2058 } 3690 }
2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3691 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2060 3692
2061 feed_reverse_done (EV_A_ EV_TIMEOUT); 3693 feed_reverse_done (EV_A_ EV_TIMER);
2062 } 3694 }
2063} 3695}
2064 3696
2065#if EV_PERIODIC_ENABLE 3697#if EV_PERIODIC_ENABLE
3698
3699ecb_noinline
3700static void
3701periodic_recalc (EV_P_ ev_periodic *w)
3702{
3703 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3704 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3705
3706 /* the above almost always errs on the low side */
3707 while (at <= ev_rt_now)
3708 {
3709 ev_tstamp nat = at + w->interval;
3710
3711 /* when resolution fails us, we use ev_rt_now */
3712 if (ecb_expect_false (nat == at))
3713 {
3714 at = ev_rt_now;
3715 break;
3716 }
3717
3718 at = nat;
3719 }
3720
3721 ev_at (w) = at;
3722}
3723
2066/* make periodics pending */ 3724/* make periodics pending */
2067inline_size void 3725inline_size void
2068periodics_reify (EV_P) 3726periodics_reify (EV_P)
2069{ 3727{
2070 EV_FREQUENT_CHECK; 3728 EV_FREQUENT_CHECK;
2071 3729
2072 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3730 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2073 { 3731 {
2074 int feed_count = 0;
2075
2076 do 3732 do
2077 { 3733 {
2078 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2079 3735
2080 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2089 ANHE_at_cache (periodics [HEAP0]); 3745 ANHE_at_cache (periodics [HEAP0]);
2090 downheap (periodics, periodiccnt, HEAP0); 3746 downheap (periodics, periodiccnt, HEAP0);
2091 } 3747 }
2092 else if (w->interval) 3748 else if (w->interval)
2093 { 3749 {
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3750 periodic_recalc (EV_A_ w);
2095 /* if next trigger time is not sufficiently in the future, put it there */
2096 /* this might happen because of floating point inexactness */
2097 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2098 {
2099 ev_at (w) += w->interval;
2100
2101 /* if interval is unreasonably low we might still have a time in the past */
2102 /* so correct this. this will make the periodic very inexact, but the user */
2103 /* has effectively asked to get triggered more often than possible */
2104 if (ev_at (w) < ev_rt_now)
2105 ev_at (w) = ev_rt_now;
2106 }
2107
2108 ANHE_at_cache (periodics [HEAP0]); 3751 ANHE_at_cache (periodics [HEAP0]);
2109 downheap (periodics, periodiccnt, HEAP0); 3752 downheap (periodics, periodiccnt, HEAP0);
2110 } 3753 }
2111 else 3754 else
2112 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3755 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2119 feed_reverse_done (EV_A_ EV_PERIODIC); 3762 feed_reverse_done (EV_A_ EV_PERIODIC);
2120 } 3763 }
2121} 3764}
2122 3765
2123/* simply recalculate all periodics */ 3766/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3767/* TODO: maybe ensure that at least one event happens when jumping forward? */
2125static void noinline 3768ecb_noinline ecb_cold
3769static void
2126periodics_reschedule (EV_P) 3770periodics_reschedule (EV_P)
2127{ 3771{
2128 int i; 3772 int i;
2129 3773
2130 /* adjust periodics after time jump */ 3774 /* adjust periodics after time jump */
… …
2133 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3777 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2134 3778
2135 if (w->reschedule_cb) 3779 if (w->reschedule_cb)
2136 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3780 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2137 else if (w->interval) 3781 else if (w->interval)
2138 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3782 periodic_recalc (EV_A_ w);
2139 3783
2140 ANHE_at_cache (periodics [i]); 3784 ANHE_at_cache (periodics [i]);
2141 } 3785 }
2142 3786
2143 reheap (periodics, periodiccnt); 3787 reheap (periodics, periodiccnt);
2144} 3788}
2145#endif 3789#endif
2146 3790
2147/* adjust all timers by a given offset */ 3791/* adjust all timers by a given offset */
2148static void noinline 3792ecb_noinline ecb_cold
3793static void
2149timers_reschedule (EV_P_ ev_tstamp adjust) 3794timers_reschedule (EV_P_ ev_tstamp adjust)
2150{ 3795{
2151 int i; 3796 int i;
2152 3797
2153 for (i = 0; i < timercnt; ++i) 3798 for (i = 0; i < timercnt; ++i)
… …
2157 ANHE_at_cache (*he); 3802 ANHE_at_cache (*he);
2158 } 3803 }
2159} 3804}
2160 3805
2161/* fetch new monotonic and realtime times from the kernel */ 3806/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */ 3807/* also detect if there was a timejump, and act accordingly */
2163inline_speed void 3808inline_speed void
2164time_update (EV_P_ ev_tstamp max_block) 3809time_update (EV_P_ ev_tstamp max_block)
2165{ 3810{
2166#if EV_USE_MONOTONIC 3811#if EV_USE_MONOTONIC
2167 if (expect_true (have_monotonic)) 3812 if (ecb_expect_true (have_monotonic))
2168 { 3813 {
2169 int i; 3814 int i;
2170 ev_tstamp odiff = rtmn_diff; 3815 ev_tstamp odiff = rtmn_diff;
2171 3816
2172 mn_now = get_clock (); 3817 mn_now = get_clock ();
2173 3818
2174 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3819 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2175 /* interpolate in the meantime */ 3820 /* interpolate in the meantime */
2176 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3821 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2177 { 3822 {
2178 ev_rt_now = rtmn_diff + mn_now; 3823 ev_rt_now = rtmn_diff + mn_now;
2179 return; 3824 return;
2180 } 3825 }
2181 3826
… …
2190 * doesn't hurt either as we only do this on time-jumps or 3835 * doesn't hurt either as we only do this on time-jumps or
2191 * in the unlikely event of having been preempted here. 3836 * in the unlikely event of having been preempted here.
2192 */ 3837 */
2193 for (i = 4; --i; ) 3838 for (i = 4; --i; )
2194 { 3839 {
3840 ev_tstamp diff;
2195 rtmn_diff = ev_rt_now - mn_now; 3841 rtmn_diff = ev_rt_now - mn_now;
2196 3842
2197 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3843 diff = odiff - rtmn_diff;
3844
3845 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2198 return; /* all is well */ 3846 return; /* all is well */
2199 3847
2200 ev_rt_now = ev_time (); 3848 ev_rt_now = ev_time ();
2201 mn_now = get_clock (); 3849 mn_now = get_clock ();
2202 now_floor = mn_now; 3850 now_floor = mn_now;
… …
2211 else 3859 else
2212#endif 3860#endif
2213 { 3861 {
2214 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
2215 3863
2216 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3864 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2217 { 3865 {
2218 /* adjust timers. this is easy, as the offset is the same for all of them */ 3866 /* adjust timers. this is easy, as the offset is the same for all of them */
2219 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3867 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2220#if EV_PERIODIC_ENABLE 3868#if EV_PERIODIC_ENABLE
2221 periodics_reschedule (EV_A); 3869 periodics_reschedule (EV_A);
… …
2224 3872
2225 mn_now = ev_rt_now; 3873 mn_now = ev_rt_now;
2226 } 3874 }
2227} 3875}
2228 3876
2229void 3877int
2230ev_loop (EV_P_ int flags) 3878ev_run (EV_P_ int flags)
2231{ 3879{
2232#if EV_MINIMAL < 2 3880#if EV_FEATURE_API
2233 ++loop_depth; 3881 ++loop_depth;
2234#endif 3882#endif
2235 3883
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3884 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2237 3885
2238 loop_done = EVUNLOOP_CANCEL; 3886 loop_done = EVBREAK_CANCEL;
2239 3887
2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3888 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2241 3889
2242 do 3890 do
2243 { 3891 {
2244#if EV_VERIFY >= 2 3892#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A); 3893 ev_verify (EV_A);
2246#endif 3894#endif
2247 3895
2248#ifndef _WIN32 3896#ifndef _WIN32
2249 if (expect_false (curpid)) /* penalise the forking check even more */ 3897 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2250 if (expect_false (getpid () != curpid)) 3898 if (ecb_expect_false (getpid () != curpid))
2251 { 3899 {
2252 curpid = getpid (); 3900 curpid = getpid ();
2253 postfork = 1; 3901 postfork = 1;
2254 } 3902 }
2255#endif 3903#endif
2256 3904
2257#if EV_FORK_ENABLE 3905#if EV_FORK_ENABLE
2258 /* we might have forked, so queue fork handlers */ 3906 /* we might have forked, so queue fork handlers */
2259 if (expect_false (postfork)) 3907 if (ecb_expect_false (postfork))
2260 if (forkcnt) 3908 if (forkcnt)
2261 { 3909 {
2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3910 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2263 EV_INVOKE_PENDING; 3911 EV_INVOKE_PENDING;
2264 } 3912 }
2265#endif 3913#endif
2266 3914
3915#if EV_PREPARE_ENABLE
2267 /* queue prepare watchers (and execute them) */ 3916 /* queue prepare watchers (and execute them) */
2268 if (expect_false (preparecnt)) 3917 if (ecb_expect_false (preparecnt))
2269 { 3918 {
2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3919 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2271 EV_INVOKE_PENDING; 3920 EV_INVOKE_PENDING;
2272 } 3921 }
3922#endif
2273 3923
2274 if (expect_false (loop_done)) 3924 if (ecb_expect_false (loop_done))
2275 break; 3925 break;
2276 3926
2277 /* we might have forked, so reify kernel state if necessary */ 3927 /* we might have forked, so reify kernel state if necessary */
2278 if (expect_false (postfork)) 3928 if (ecb_expect_false (postfork))
2279 loop_fork (EV_A); 3929 loop_fork (EV_A);
2280 3930
2281 /* update fd-related kernel structures */ 3931 /* update fd-related kernel structures */
2282 fd_reify (EV_A); 3932 fd_reify (EV_A);
2283 3933
2284 /* calculate blocking time */ 3934 /* calculate blocking time */
2285 { 3935 {
2286 ev_tstamp waittime = 0.; 3936 ev_tstamp waittime = 0.;
2287 ev_tstamp sleeptime = 0.; 3937 ev_tstamp sleeptime = 0.;
2288 3938
3939 /* remember old timestamp for io_blocktime calculation */
3940 ev_tstamp prev_mn_now = mn_now;
3941
3942 /* update time to cancel out callback processing overhead */
3943 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3944
3945 /* from now on, we want a pipe-wake-up */
3946 pipe_write_wanted = 1;
3947
3948 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3949
2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3950 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2290 { 3951 {
2291 /* remember old timestamp for io_blocktime calculation */
2292 ev_tstamp prev_mn_now = mn_now;
2293
2294 /* update time to cancel out callback processing overhead */
2295 time_update (EV_A_ 1e100);
2296
2297 waittime = MAX_BLOCKTIME; 3952 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2298 3953
2299 if (timercnt) 3954 if (timercnt)
2300 { 3955 {
2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3956 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2302 if (waittime > to) waittime = to; 3957 if (waittime > to) waittime = to;
2303 } 3958 }
2304 3959
2305#if EV_PERIODIC_ENABLE 3960#if EV_PERIODIC_ENABLE
2306 if (periodiccnt) 3961 if (periodiccnt)
2307 { 3962 {
2308 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3963 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2309 if (waittime > to) waittime = to; 3964 if (waittime > to) waittime = to;
2310 } 3965 }
2311#endif 3966#endif
2312 3967
2313 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3968 /* don't let timeouts decrease the waittime below timeout_blocktime */
2314 if (expect_false (waittime < timeout_blocktime)) 3969 if (ecb_expect_false (waittime < timeout_blocktime))
2315 waittime = timeout_blocktime; 3970 waittime = timeout_blocktime;
2316 3971
3972 /* now there are two more special cases left, either we have
3973 * already-expired timers, so we should not sleep, or we have timers
3974 * that expire very soon, in which case we need to wait for a minimum
3975 * amount of time for some event loop backends.
3976 */
3977 if (ecb_expect_false (waittime < backend_mintime))
3978 waittime = waittime <= EV_TS_CONST (0.)
3979 ? EV_TS_CONST (0.)
3980 : backend_mintime;
3981
2317 /* extra check because io_blocktime is commonly 0 */ 3982 /* extra check because io_blocktime is commonly 0 */
2318 if (expect_false (io_blocktime)) 3983 if (ecb_expect_false (io_blocktime))
2319 { 3984 {
2320 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3985 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2321 3986
2322 if (sleeptime > waittime - backend_fudge) 3987 if (sleeptime > waittime - backend_mintime)
2323 sleeptime = waittime - backend_fudge; 3988 sleeptime = waittime - backend_mintime;
2324 3989
2325 if (expect_true (sleeptime > 0.)) 3990 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2326 { 3991 {
2327 ev_sleep (sleeptime); 3992 ev_sleep (sleeptime);
2328 waittime -= sleeptime; 3993 waittime -= sleeptime;
2329 } 3994 }
2330 } 3995 }
2331 } 3996 }
2332 3997
2333#if EV_MINIMAL < 2 3998#if EV_FEATURE_API
2334 ++loop_count; 3999 ++loop_count;
2335#endif 4000#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 4001 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2337 backend_poll (EV_A_ waittime); 4002 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 4003 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4004
4005 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4006
4007 ECB_MEMORY_FENCE_ACQUIRE;
4008 if (pipe_write_skipped)
4009 {
4010 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4011 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4012 }
2339 4013
2340 /* update ev_rt_now, do magic */ 4014 /* update ev_rt_now, do magic */
2341 time_update (EV_A_ waittime + sleeptime); 4015 time_update (EV_A_ waittime + sleeptime);
2342 } 4016 }
2343 4017
… …
2350#if EV_IDLE_ENABLE 4024#if EV_IDLE_ENABLE
2351 /* queue idle watchers unless other events are pending */ 4025 /* queue idle watchers unless other events are pending */
2352 idle_reify (EV_A); 4026 idle_reify (EV_A);
2353#endif 4027#endif
2354 4028
4029#if EV_CHECK_ENABLE
2355 /* queue check watchers, to be executed first */ 4030 /* queue check watchers, to be executed first */
2356 if (expect_false (checkcnt)) 4031 if (ecb_expect_false (checkcnt))
2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
4033#endif
2358 4034
2359 EV_INVOKE_PENDING; 4035 EV_INVOKE_PENDING;
2360 } 4036 }
2361 while (expect_true ( 4037 while (ecb_expect_true (
2362 activecnt 4038 activecnt
2363 && !loop_done 4039 && !loop_done
2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4040 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2365 )); 4041 ));
2366 4042
2367 if (loop_done == EVUNLOOP_ONE) 4043 if (loop_done == EVBREAK_ONE)
2368 loop_done = EVUNLOOP_CANCEL; 4044 loop_done = EVBREAK_CANCEL;
2369 4045
2370#if EV_MINIMAL < 2 4046#if EV_FEATURE_API
2371 --loop_depth; 4047 --loop_depth;
2372#endif 4048#endif
2373}
2374 4049
4050 return activecnt;
4051}
4052
2375void 4053void
2376ev_unloop (EV_P_ int how) 4054ev_break (EV_P_ int how) EV_NOEXCEPT
2377{ 4055{
2378 loop_done = how; 4056 loop_done = how;
2379} 4057}
2380 4058
2381void 4059void
2382ev_ref (EV_P) 4060ev_ref (EV_P) EV_NOEXCEPT
2383{ 4061{
2384 ++activecnt; 4062 ++activecnt;
2385} 4063}
2386 4064
2387void 4065void
2388ev_unref (EV_P) 4066ev_unref (EV_P) EV_NOEXCEPT
2389{ 4067{
2390 --activecnt; 4068 --activecnt;
2391} 4069}
2392 4070
2393void 4071void
2394ev_now_update (EV_P) 4072ev_now_update (EV_P) EV_NOEXCEPT
2395{ 4073{
2396 time_update (EV_A_ 1e100); 4074 time_update (EV_A_ EV_TSTAMP_HUGE);
2397} 4075}
2398 4076
2399void 4077void
2400ev_suspend (EV_P) 4078ev_suspend (EV_P) EV_NOEXCEPT
2401{ 4079{
2402 ev_now_update (EV_A); 4080 ev_now_update (EV_A);
2403} 4081}
2404 4082
2405void 4083void
2406ev_resume (EV_P) 4084ev_resume (EV_P) EV_NOEXCEPT
2407{ 4085{
2408 ev_tstamp mn_prev = mn_now; 4086 ev_tstamp mn_prev = mn_now;
2409 4087
2410 ev_now_update (EV_A); 4088 ev_now_update (EV_A);
2411 timers_reschedule (EV_A_ mn_now - mn_prev); 4089 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2428inline_size void 4106inline_size void
2429wlist_del (WL *head, WL elem) 4107wlist_del (WL *head, WL elem)
2430{ 4108{
2431 while (*head) 4109 while (*head)
2432 { 4110 {
2433 if (expect_true (*head == elem)) 4111 if (ecb_expect_true (*head == elem))
2434 { 4112 {
2435 *head = elem->next; 4113 *head = elem->next;
2436 break; 4114 break;
2437 } 4115 }
2438 4116
… …
2450 w->pending = 0; 4128 w->pending = 0;
2451 } 4129 }
2452} 4130}
2453 4131
2454int 4132int
2455ev_clear_pending (EV_P_ void *w) 4133ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2456{ 4134{
2457 W w_ = (W)w; 4135 W w_ = (W)w;
2458 int pending = w_->pending; 4136 int pending = w_->pending;
2459 4137
2460 if (expect_true (pending)) 4138 if (ecb_expect_true (pending))
2461 { 4139 {
2462 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4140 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2463 p->w = (W)&pending_w; 4141 p->w = (W)&pending_w;
2464 w_->pending = 0; 4142 w_->pending = 0;
2465 return p->events; 4143 return p->events;
… …
2492 w->active = 0; 4170 w->active = 0;
2493} 4171}
2494 4172
2495/*****************************************************************************/ 4173/*****************************************************************************/
2496 4174
2497void noinline 4175ecb_noinline
4176void
2498ev_io_start (EV_P_ ev_io *w) 4177ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2499{ 4178{
2500 int fd = w->fd; 4179 int fd = w->fd;
2501 4180
2502 if (expect_false (ev_is_active (w))) 4181 if (ecb_expect_false (ev_is_active (w)))
2503 return; 4182 return;
2504 4183
2505 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4184 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2506 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4185 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507 4186
4187#if EV_VERIFY >= 2
4188 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4189#endif
2508 EV_FREQUENT_CHECK; 4190 EV_FREQUENT_CHECK;
2509 4191
2510 ev_start (EV_A_ (W)w, 1); 4192 ev_start (EV_A_ (W)w, 1);
2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4193 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2512 wlist_add (&anfds[fd].head, (WL)w); 4194 wlist_add (&anfds[fd].head, (WL)w);
4195
4196 /* common bug, apparently */
4197 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2513 4198
2514 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4199 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2515 w->events &= ~EV__IOFDSET; 4200 w->events &= ~EV__IOFDSET;
2516 4201
2517 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
2518} 4203}
2519 4204
2520void noinline 4205ecb_noinline
4206void
2521ev_io_stop (EV_P_ ev_io *w) 4207ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2522{ 4208{
2523 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 4210 if (ecb_expect_false (!ev_is_active (w)))
2525 return; 4211 return;
2526 4212
2527 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4213 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2528 4214
4215#if EV_VERIFY >= 2
4216 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4217#endif
2529 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2530 4219
2531 wlist_del (&anfds[w->fd].head, (WL)w); 4220 wlist_del (&anfds[w->fd].head, (WL)w);
2532 ev_stop (EV_A_ (W)w); 4221 ev_stop (EV_A_ (W)w);
2533 4222
2534 fd_change (EV_A_ w->fd, 1); 4223 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2535 4224
2536 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
2537} 4226}
2538 4227
2539void noinline 4228ecb_noinline
4229void
2540ev_timer_start (EV_P_ ev_timer *w) 4230ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2541{ 4231{
2542 if (expect_false (ev_is_active (w))) 4232 if (ecb_expect_false (ev_is_active (w)))
2543 return; 4233 return;
2544 4234
2545 ev_at (w) += mn_now; 4235 ev_at (w) += mn_now;
2546 4236
2547 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4237 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2548 4238
2549 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
2550 4240
2551 ++timercnt; 4241 ++timercnt;
2552 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4242 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2553 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4243 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2554 ANHE_w (timers [ev_active (w)]) = (WT)w; 4244 ANHE_w (timers [ev_active (w)]) = (WT)w;
2555 ANHE_at_cache (timers [ev_active (w)]); 4245 ANHE_at_cache (timers [ev_active (w)]);
2556 upheap (timers, ev_active (w)); 4246 upheap (timers, ev_active (w));
2557 4247
2558 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
2559 4249
2560 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4250 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2561} 4251}
2562 4252
2563void noinline 4253ecb_noinline
4254void
2564ev_timer_stop (EV_P_ ev_timer *w) 4255ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2565{ 4256{
2566 clear_pending (EV_A_ (W)w); 4257 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 4258 if (ecb_expect_false (!ev_is_active (w)))
2568 return; 4259 return;
2569 4260
2570 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
2571 4262
2572 { 4263 {
… …
2574 4265
2575 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4266 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2576 4267
2577 --timercnt; 4268 --timercnt;
2578 4269
2579 if (expect_true (active < timercnt + HEAP0)) 4270 if (ecb_expect_true (active < timercnt + HEAP0))
2580 { 4271 {
2581 timers [active] = timers [timercnt + HEAP0]; 4272 timers [active] = timers [timercnt + HEAP0];
2582 adjustheap (timers, timercnt, active); 4273 adjustheap (timers, timercnt, active);
2583 } 4274 }
2584 } 4275 }
2585 4276
4277 ev_at (w) -= mn_now;
4278
4279 ev_stop (EV_A_ (W)w);
4280
2586 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
2587
2588 ev_at (w) -= mn_now;
2589
2590 ev_stop (EV_A_ (W)w);
2591} 4282}
2592 4283
2593void noinline 4284ecb_noinline
4285void
2594ev_timer_again (EV_P_ ev_timer *w) 4286ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2595{ 4287{
2596 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
4289
4290 clear_pending (EV_A_ (W)w);
2597 4291
2598 if (ev_is_active (w)) 4292 if (ev_is_active (w))
2599 { 4293 {
2600 if (w->repeat) 4294 if (w->repeat)
2601 { 4295 {
… …
2614 4308
2615 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
2616} 4310}
2617 4311
2618ev_tstamp 4312ev_tstamp
2619ev_timer_remaining (EV_P_ ev_timer *w) 4313ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2620{ 4314{
2621 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4315 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2622} 4316}
2623 4317
2624#if EV_PERIODIC_ENABLE 4318#if EV_PERIODIC_ENABLE
2625void noinline 4319ecb_noinline
4320void
2626ev_periodic_start (EV_P_ ev_periodic *w) 4321ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2627{ 4322{
2628 if (expect_false (ev_is_active (w))) 4323 if (ecb_expect_false (ev_is_active (w)))
2629 return; 4324 return;
4325
4326#if EV_USE_TIMERFD
4327 if (timerfd == -2)
4328 evtimerfd_init (EV_A);
4329#endif
2630 4330
2631 if (w->reschedule_cb) 4331 if (w->reschedule_cb)
2632 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4332 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2633 else if (w->interval) 4333 else if (w->interval)
2634 { 4334 {
2635 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4335 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2636 /* this formula differs from the one in periodic_reify because we do not always round up */ 4336 periodic_recalc (EV_A_ w);
2637 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2638 } 4337 }
2639 else 4338 else
2640 ev_at (w) = w->offset; 4339 ev_at (w) = w->offset;
2641 4340
2642 EV_FREQUENT_CHECK; 4341 EV_FREQUENT_CHECK;
2643 4342
2644 ++periodiccnt; 4343 ++periodiccnt;
2645 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4344 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2646 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4345 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2647 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4346 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2648 ANHE_at_cache (periodics [ev_active (w)]); 4347 ANHE_at_cache (periodics [ev_active (w)]);
2649 upheap (periodics, ev_active (w)); 4348 upheap (periodics, ev_active (w));
2650 4349
2651 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
2652 4351
2653 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4352 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2654} 4353}
2655 4354
2656void noinline 4355ecb_noinline
4356void
2657ev_periodic_stop (EV_P_ ev_periodic *w) 4357ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2658{ 4358{
2659 clear_pending (EV_A_ (W)w); 4359 clear_pending (EV_A_ (W)w);
2660 if (expect_false (!ev_is_active (w))) 4360 if (ecb_expect_false (!ev_is_active (w)))
2661 return; 4361 return;
2662 4362
2663 EV_FREQUENT_CHECK; 4363 EV_FREQUENT_CHECK;
2664 4364
2665 { 4365 {
… …
2667 4367
2668 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4368 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2669 4369
2670 --periodiccnt; 4370 --periodiccnt;
2671 4371
2672 if (expect_true (active < periodiccnt + HEAP0)) 4372 if (ecb_expect_true (active < periodiccnt + HEAP0))
2673 { 4373 {
2674 periodics [active] = periodics [periodiccnt + HEAP0]; 4374 periodics [active] = periodics [periodiccnt + HEAP0];
2675 adjustheap (periodics, periodiccnt, active); 4375 adjustheap (periodics, periodiccnt, active);
2676 } 4376 }
2677 } 4377 }
2678 4378
4379 ev_stop (EV_A_ (W)w);
4380
2679 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
2680
2681 ev_stop (EV_A_ (W)w);
2682} 4382}
2683 4383
2684void noinline 4384ecb_noinline
4385void
2685ev_periodic_again (EV_P_ ev_periodic *w) 4386ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2686{ 4387{
2687 /* TODO: use adjustheap and recalculation */ 4388 /* TODO: use adjustheap and recalculation */
2688 ev_periodic_stop (EV_A_ w); 4389 ev_periodic_stop (EV_A_ w);
2689 ev_periodic_start (EV_A_ w); 4390 ev_periodic_start (EV_A_ w);
2690} 4391}
… …
2692 4393
2693#ifndef SA_RESTART 4394#ifndef SA_RESTART
2694# define SA_RESTART 0 4395# define SA_RESTART 0
2695#endif 4396#endif
2696 4397
2697void noinline 4398#if EV_SIGNAL_ENABLE
4399
4400ecb_noinline
4401void
2698ev_signal_start (EV_P_ ev_signal *w) 4402ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2699{ 4403{
2700 if (expect_false (ev_is_active (w))) 4404 if (ecb_expect_false (ev_is_active (w)))
2701 return; 4405 return;
2702 4406
2703 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4407 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2704 4408
2705#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
2706 assert (("libev: a signal must not be attached to two different loops", 4410 assert (("libev: a signal must not be attached to two different loops",
2707 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4411 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2708 4412
2709 signals [w->signum - 1].loop = EV_A; 4413 signals [w->signum - 1].loop = EV_A;
4414 ECB_MEMORY_FENCE_RELEASE;
2710#endif 4415#endif
2711 4416
2712 EV_FREQUENT_CHECK; 4417 EV_FREQUENT_CHECK;
2713 4418
2714#if EV_USE_SIGNALFD 4419#if EV_USE_SIGNALFD
… …
2747 if (!((WL)w)->next) 4452 if (!((WL)w)->next)
2748# if EV_USE_SIGNALFD 4453# if EV_USE_SIGNALFD
2749 if (sigfd < 0) /*TODO*/ 4454 if (sigfd < 0) /*TODO*/
2750# endif 4455# endif
2751 { 4456 {
2752# if _WIN32 4457# ifdef _WIN32
2753 evpipe_init (EV_A); 4458 evpipe_init (EV_A);
2754 4459
2755 signal (w->signum, ev_sighandler); 4460 signal (w->signum, ev_sighandler);
2756# else 4461# else
2757 struct sigaction sa; 4462 struct sigaction sa;
… …
2761 sa.sa_handler = ev_sighandler; 4466 sa.sa_handler = ev_sighandler;
2762 sigfillset (&sa.sa_mask); 4467 sigfillset (&sa.sa_mask);
2763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4468 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2764 sigaction (w->signum, &sa, 0); 4469 sigaction (w->signum, &sa, 0);
2765 4470
4471 if (origflags & EVFLAG_NOSIGMASK)
4472 {
2766 sigemptyset (&sa.sa_mask); 4473 sigemptyset (&sa.sa_mask);
2767 sigaddset (&sa.sa_mask, w->signum); 4474 sigaddset (&sa.sa_mask, w->signum);
2768 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4475 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4476 }
2769#endif 4477#endif
2770 } 4478 }
2771 4479
2772 EV_FREQUENT_CHECK; 4480 EV_FREQUENT_CHECK;
2773} 4481}
2774 4482
2775void noinline 4483ecb_noinline
4484void
2776ev_signal_stop (EV_P_ ev_signal *w) 4485ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2777{ 4486{
2778 clear_pending (EV_A_ (W)w); 4487 clear_pending (EV_A_ (W)w);
2779 if (expect_false (!ev_is_active (w))) 4488 if (ecb_expect_false (!ev_is_active (w)))
2780 return; 4489 return;
2781 4490
2782 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
2783 4492
2784 wlist_del (&signals [w->signum - 1].head, (WL)w); 4493 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2790 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4499 signals [w->signum - 1].loop = 0; /* unattach from signal */
2791#endif 4500#endif
2792#if EV_USE_SIGNALFD 4501#if EV_USE_SIGNALFD
2793 if (sigfd >= 0) 4502 if (sigfd >= 0)
2794 { 4503 {
2795 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4504 sigset_t ss;
4505
4506 sigemptyset (&ss);
4507 sigaddset (&ss, w->signum);
2796 sigdelset (&sigfd_set, w->signum); 4508 sigdelset (&sigfd_set, w->signum);
4509
2797 signalfd (sigfd, &sigfd_set, 0); 4510 signalfd (sigfd, &sigfd_set, 0);
2798 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4511 sigprocmask (SIG_UNBLOCK, &ss, 0);
2799 /*TODO: maybe unblock signal? */
2800 } 4512 }
2801 else 4513 else
2802#endif 4514#endif
2803 signal (w->signum, SIG_DFL); 4515 signal (w->signum, SIG_DFL);
2804 } 4516 }
2805 4517
2806 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
2807} 4519}
2808 4520
4521#endif
4522
4523#if EV_CHILD_ENABLE
4524
2809void 4525void
2810ev_child_start (EV_P_ ev_child *w) 4526ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2811{ 4527{
2812#if EV_MULTIPLICITY 4528#if EV_MULTIPLICITY
2813 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4529 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2814#endif 4530#endif
2815 if (expect_false (ev_is_active (w))) 4531 if (ecb_expect_false (ev_is_active (w)))
2816 return; 4532 return;
2817 4533
2818 EV_FREQUENT_CHECK; 4534 EV_FREQUENT_CHECK;
2819 4535
2820 ev_start (EV_A_ (W)w, 1); 4536 ev_start (EV_A_ (W)w, 1);
2821 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4537 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2822 4538
2823 EV_FREQUENT_CHECK; 4539 EV_FREQUENT_CHECK;
2824} 4540}
2825 4541
2826void 4542void
2827ev_child_stop (EV_P_ ev_child *w) 4543ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2828{ 4544{
2829 clear_pending (EV_A_ (W)w); 4545 clear_pending (EV_A_ (W)w);
2830 if (expect_false (!ev_is_active (w))) 4546 if (ecb_expect_false (!ev_is_active (w)))
2831 return; 4547 return;
2832 4548
2833 EV_FREQUENT_CHECK; 4549 EV_FREQUENT_CHECK;
2834 4550
2835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4551 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2836 ev_stop (EV_A_ (W)w); 4552 ev_stop (EV_A_ (W)w);
2837 4553
2838 EV_FREQUENT_CHECK; 4554 EV_FREQUENT_CHECK;
2839} 4555}
4556
4557#endif
2840 4558
2841#if EV_STAT_ENABLE 4559#if EV_STAT_ENABLE
2842 4560
2843# ifdef _WIN32 4561# ifdef _WIN32
2844# undef lstat 4562# undef lstat
… …
2847 4565
2848#define DEF_STAT_INTERVAL 5.0074891 4566#define DEF_STAT_INTERVAL 5.0074891
2849#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4567#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2850#define MIN_STAT_INTERVAL 0.1074891 4568#define MIN_STAT_INTERVAL 0.1074891
2851 4569
2852static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4570ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2853 4571
2854#if EV_USE_INOTIFY 4572#if EV_USE_INOTIFY
2855# define EV_INOTIFY_BUFSIZE 8192
2856 4573
2857static void noinline 4574/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4575# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4576
4577ecb_noinline
4578static void
2858infy_add (EV_P_ ev_stat *w) 4579infy_add (EV_P_ ev_stat *w)
2859{ 4580{
2860 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); 4581 w->wd = inotify_add_watch (fs_fd, w->path,
4582 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4583 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4584 | IN_DONT_FOLLOW | IN_MASK_ADD);
2861 4585
2862 if (w->wd >= 0) 4586 if (w->wd >= 0)
2863 { 4587 {
2864 struct statfs sfs; 4588 struct statfs sfs;
2865 4589
… …
2869 4593
2870 if (!fs_2625) 4594 if (!fs_2625)
2871 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4595 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2872 else if (!statfs (w->path, &sfs) 4596 else if (!statfs (w->path, &sfs)
2873 && (sfs.f_type == 0x1373 /* devfs */ 4597 && (sfs.f_type == 0x1373 /* devfs */
4598 || sfs.f_type == 0x4006 /* fat */
4599 || sfs.f_type == 0x4d44 /* msdos */
2874 || sfs.f_type == 0xEF53 /* ext2/3 */ 4600 || sfs.f_type == 0xEF53 /* ext2/3 */
4601 || sfs.f_type == 0x72b6 /* jffs2 */
4602 || sfs.f_type == 0x858458f6 /* ramfs */
4603 || sfs.f_type == 0x5346544e /* ntfs */
2875 || sfs.f_type == 0x3153464a /* jfs */ 4604 || sfs.f_type == 0x3153464a /* jfs */
4605 || sfs.f_type == 0x9123683e /* btrfs */
2876 || sfs.f_type == 0x52654973 /* reiser3 */ 4606 || sfs.f_type == 0x52654973 /* reiser3 */
2877 || sfs.f_type == 0x01021994 /* tempfs */ 4607 || sfs.f_type == 0x01021994 /* tmpfs */
2878 || sfs.f_type == 0x58465342 /* xfs */)) 4608 || sfs.f_type == 0x58465342 /* xfs */))
2879 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4609 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2880 else 4610 else
2881 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4611 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2882 } 4612 }
… …
2903 if (!pend || pend == path) 4633 if (!pend || pend == path)
2904 break; 4634 break;
2905 4635
2906 *pend = 0; 4636 *pend = 0;
2907 w->wd = inotify_add_watch (fs_fd, path, mask); 4637 w->wd = inotify_add_watch (fs_fd, path, mask);
2908 } 4638 }
2909 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4639 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2910 } 4640 }
2911 } 4641 }
2912 4642
2913 if (w->wd >= 0) 4643 if (w->wd >= 0)
2914 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4644 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2915 4645
2916 /* now re-arm timer, if required */ 4646 /* now re-arm timer, if required */
2917 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4647 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2918 ev_timer_again (EV_A_ &w->timer); 4648 ev_timer_again (EV_A_ &w->timer);
2919 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4649 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2920} 4650}
2921 4651
2922static void noinline 4652ecb_noinline
4653static void
2923infy_del (EV_P_ ev_stat *w) 4654infy_del (EV_P_ ev_stat *w)
2924{ 4655{
2925 int slot; 4656 int slot;
2926 int wd = w->wd; 4657 int wd = w->wd;
2927 4658
2928 if (wd < 0) 4659 if (wd < 0)
2929 return; 4660 return;
2930 4661
2931 w->wd = -2; 4662 w->wd = -2;
2932 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4663 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2933 wlist_del (&fs_hash [slot].head, (WL)w); 4664 wlist_del (&fs_hash [slot].head, (WL)w);
2934 4665
2935 /* remove this watcher, if others are watching it, they will rearm */ 4666 /* remove this watcher, if others are watching it, they will rearm */
2936 inotify_rm_watch (fs_fd, wd); 4667 inotify_rm_watch (fs_fd, wd);
2937} 4668}
2938 4669
2939static void noinline 4670ecb_noinline
4671static void
2940infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4672infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2941{ 4673{
2942 if (slot < 0) 4674 if (slot < 0)
2943 /* overflow, need to check for all hash slots */ 4675 /* overflow, need to check for all hash slots */
2944 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4676 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2945 infy_wd (EV_A_ slot, wd, ev); 4677 infy_wd (EV_A_ slot, wd, ev);
2946 else 4678 else
2947 { 4679 {
2948 WL w_; 4680 WL w_;
2949 4681
2950 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4682 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2951 { 4683 {
2952 ev_stat *w = (ev_stat *)w_; 4684 ev_stat *w = (ev_stat *)w_;
2953 w_ = w_->next; /* lets us remove this watcher and all before it */ 4685 w_ = w_->next; /* lets us remove this watcher and all before it */
2954 4686
2955 if (w->wd == wd || wd == -1) 4687 if (w->wd == wd || wd == -1)
2956 { 4688 {
2957 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4689 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2958 { 4690 {
2959 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4691 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2960 w->wd = -1; 4692 w->wd = -1;
2961 infy_add (EV_A_ w); /* re-add, no matter what */ 4693 infy_add (EV_A_ w); /* re-add, no matter what */
2962 } 4694 }
2963 4695
2964 stat_timer_cb (EV_A_ &w->timer, 0); 4696 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2969 4701
2970static void 4702static void
2971infy_cb (EV_P_ ev_io *w, int revents) 4703infy_cb (EV_P_ ev_io *w, int revents)
2972{ 4704{
2973 char buf [EV_INOTIFY_BUFSIZE]; 4705 char buf [EV_INOTIFY_BUFSIZE];
2974 struct inotify_event *ev = (struct inotify_event *)buf;
2975 int ofs; 4706 int ofs;
2976 int len = read (fs_fd, buf, sizeof (buf)); 4707 int len = read (fs_fd, buf, sizeof (buf));
2977 4708
2978 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4709 for (ofs = 0; ofs < len; )
4710 {
4711 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2979 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4712 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4713 ofs += sizeof (struct inotify_event) + ev->len;
4714 }
2980} 4715}
2981 4716
2982inline_size void 4717inline_size ecb_cold
4718void
2983check_2625 (EV_P) 4719ev_check_2625 (EV_P)
2984{ 4720{
2985 /* kernels < 2.6.25 are borked 4721 /* kernels < 2.6.25 are borked
2986 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4722 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2987 */ 4723 */
2988 struct utsname buf; 4724 if (ev_linux_version () < 0x020619)
2989 int major, minor, micro;
2990
2991 if (uname (&buf))
2992 return;
2993
2994 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2995 return;
2996
2997 if (major < 2
2998 || (major == 2 && minor < 6)
2999 || (major == 2 && minor == 6 && micro < 25))
3000 return; 4725 return;
3001 4726
3002 fs_2625 = 1; 4727 fs_2625 = 1;
3003} 4728}
3004 4729
3005inline_size int 4730inline_size int
3006infy_newfd (void) 4731infy_newfd (void)
3007{ 4732{
3008#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4733#if defined IN_CLOEXEC && defined IN_NONBLOCK
3009 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4734 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3010 if (fd >= 0) 4735 if (fd >= 0)
3011 return fd; 4736 return fd;
3012#endif 4737#endif
3013 return inotify_init (); 4738 return inotify_init ();
… …
3019 if (fs_fd != -2) 4744 if (fs_fd != -2)
3020 return; 4745 return;
3021 4746
3022 fs_fd = -1; 4747 fs_fd = -1;
3023 4748
3024 check_2625 (EV_A); 4749 ev_check_2625 (EV_A);
3025 4750
3026 fs_fd = infy_newfd (); 4751 fs_fd = infy_newfd ();
3027 4752
3028 if (fs_fd >= 0) 4753 if (fs_fd >= 0)
3029 { 4754 {
… …
3054 ev_io_set (&fs_w, fs_fd, EV_READ); 4779 ev_io_set (&fs_w, fs_fd, EV_READ);
3055 ev_io_start (EV_A_ &fs_w); 4780 ev_io_start (EV_A_ &fs_w);
3056 ev_unref (EV_A); 4781 ev_unref (EV_A);
3057 } 4782 }
3058 4783
3059 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4784 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3060 { 4785 {
3061 WL w_ = fs_hash [slot].head; 4786 WL w_ = fs_hash [slot].head;
3062 fs_hash [slot].head = 0; 4787 fs_hash [slot].head = 0;
3063 4788
3064 while (w_) 4789 while (w_)
… …
3088#else 4813#else
3089# define EV_LSTAT(p,b) lstat (p, b) 4814# define EV_LSTAT(p,b) lstat (p, b)
3090#endif 4815#endif
3091 4816
3092void 4817void
3093ev_stat_stat (EV_P_ ev_stat *w) 4818ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3094{ 4819{
3095 if (lstat (w->path, &w->attr) < 0) 4820 if (lstat (w->path, &w->attr) < 0)
3096 w->attr.st_nlink = 0; 4821 w->attr.st_nlink = 0;
3097 else if (!w->attr.st_nlink) 4822 else if (!w->attr.st_nlink)
3098 w->attr.st_nlink = 1; 4823 w->attr.st_nlink = 1;
3099} 4824}
3100 4825
3101static void noinline 4826ecb_noinline
4827static void
3102stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4828stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3103{ 4829{
3104 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4830 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3105 4831
3106 ev_statdata prev = w->attr; 4832 ev_statdata prev = w->attr;
… …
3137 ev_feed_event (EV_A_ w, EV_STAT); 4863 ev_feed_event (EV_A_ w, EV_STAT);
3138 } 4864 }
3139} 4865}
3140 4866
3141void 4867void
3142ev_stat_start (EV_P_ ev_stat *w) 4868ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3143{ 4869{
3144 if (expect_false (ev_is_active (w))) 4870 if (ecb_expect_false (ev_is_active (w)))
3145 return; 4871 return;
3146 4872
3147 ev_stat_stat (EV_A_ w); 4873 ev_stat_stat (EV_A_ w);
3148 4874
3149 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4875 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3168 4894
3169 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3170} 4896}
3171 4897
3172void 4898void
3173ev_stat_stop (EV_P_ ev_stat *w) 4899ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3174{ 4900{
3175 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
3176 if (expect_false (!ev_is_active (w))) 4902 if (ecb_expect_false (!ev_is_active (w)))
3177 return; 4903 return;
3178 4904
3179 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
3180 4906
3181#if EV_USE_INOTIFY 4907#if EV_USE_INOTIFY
… …
3194} 4920}
3195#endif 4921#endif
3196 4922
3197#if EV_IDLE_ENABLE 4923#if EV_IDLE_ENABLE
3198void 4924void
3199ev_idle_start (EV_P_ ev_idle *w) 4925ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3200{ 4926{
3201 if (expect_false (ev_is_active (w))) 4927 if (ecb_expect_false (ev_is_active (w)))
3202 return; 4928 return;
3203 4929
3204 pri_adjust (EV_A_ (W)w); 4930 pri_adjust (EV_A_ (W)w);
3205 4931
3206 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
… …
3209 int active = ++idlecnt [ABSPRI (w)]; 4935 int active = ++idlecnt [ABSPRI (w)];
3210 4936
3211 ++idleall; 4937 ++idleall;
3212 ev_start (EV_A_ (W)w, active); 4938 ev_start (EV_A_ (W)w, active);
3213 4939
3214 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4940 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3215 idles [ABSPRI (w)][active - 1] = w; 4941 idles [ABSPRI (w)][active - 1] = w;
3216 } 4942 }
3217 4943
3218 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
3219} 4945}
3220 4946
3221void 4947void
3222ev_idle_stop (EV_P_ ev_idle *w) 4948ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3223{ 4949{
3224 clear_pending (EV_A_ (W)w); 4950 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 4951 if (ecb_expect_false (!ev_is_active (w)))
3226 return; 4952 return;
3227 4953
3228 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
3229 4955
3230 { 4956 {
… …
3239 4965
3240 EV_FREQUENT_CHECK; 4966 EV_FREQUENT_CHECK;
3241} 4967}
3242#endif 4968#endif
3243 4969
4970#if EV_PREPARE_ENABLE
3244void 4971void
3245ev_prepare_start (EV_P_ ev_prepare *w) 4972ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3246{ 4973{
3247 if (expect_false (ev_is_active (w))) 4974 if (ecb_expect_false (ev_is_active (w)))
3248 return; 4975 return;
3249 4976
3250 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3251 4978
3252 ev_start (EV_A_ (W)w, ++preparecnt); 4979 ev_start (EV_A_ (W)w, ++preparecnt);
3253 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4980 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3254 prepares [preparecnt - 1] = w; 4981 prepares [preparecnt - 1] = w;
3255 4982
3256 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3257} 4984}
3258 4985
3259void 4986void
3260ev_prepare_stop (EV_P_ ev_prepare *w) 4987ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3261{ 4988{
3262 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3263 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3264 return; 4991 return;
3265 4992
3266 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3267 4994
3268 { 4995 {
… …
3274 5001
3275 ev_stop (EV_A_ (W)w); 5002 ev_stop (EV_A_ (W)w);
3276 5003
3277 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3278} 5005}
5006#endif
3279 5007
5008#if EV_CHECK_ENABLE
3280void 5009void
3281ev_check_start (EV_P_ ev_check *w) 5010ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3282{ 5011{
3283 if (expect_false (ev_is_active (w))) 5012 if (ecb_expect_false (ev_is_active (w)))
3284 return; 5013 return;
3285 5014
3286 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
3287 5016
3288 ev_start (EV_A_ (W)w, ++checkcnt); 5017 ev_start (EV_A_ (W)w, ++checkcnt);
3289 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5018 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3290 checks [checkcnt - 1] = w; 5019 checks [checkcnt - 1] = w;
3291 5020
3292 EV_FREQUENT_CHECK; 5021 EV_FREQUENT_CHECK;
3293} 5022}
3294 5023
3295void 5024void
3296ev_check_stop (EV_P_ ev_check *w) 5025ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3297{ 5026{
3298 clear_pending (EV_A_ (W)w); 5027 clear_pending (EV_A_ (W)w);
3299 if (expect_false (!ev_is_active (w))) 5028 if (ecb_expect_false (!ev_is_active (w)))
3300 return; 5029 return;
3301 5030
3302 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
3303 5032
3304 { 5033 {
… …
3310 5039
3311 ev_stop (EV_A_ (W)w); 5040 ev_stop (EV_A_ (W)w);
3312 5041
3313 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
3314} 5043}
5044#endif
3315 5045
3316#if EV_EMBED_ENABLE 5046#if EV_EMBED_ENABLE
3317void noinline 5047ecb_noinline
5048void
3318ev_embed_sweep (EV_P_ ev_embed *w) 5049ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3319{ 5050{
3320 ev_loop (w->other, EVLOOP_NONBLOCK); 5051 ev_run (w->other, EVRUN_NOWAIT);
3321} 5052}
3322 5053
3323static void 5054static void
3324embed_io_cb (EV_P_ ev_io *io, int revents) 5055embed_io_cb (EV_P_ ev_io *io, int revents)
3325{ 5056{
3326 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5057 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3327 5058
3328 if (ev_cb (w)) 5059 if (ev_cb (w))
3329 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5060 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3330 else 5061 else
3331 ev_loop (w->other, EVLOOP_NONBLOCK); 5062 ev_run (w->other, EVRUN_NOWAIT);
3332} 5063}
3333 5064
3334static void 5065static void
3335embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5066embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3336{ 5067{
… …
3340 EV_P = w->other; 5071 EV_P = w->other;
3341 5072
3342 while (fdchangecnt) 5073 while (fdchangecnt)
3343 { 5074 {
3344 fd_reify (EV_A); 5075 fd_reify (EV_A);
3345 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5076 ev_run (EV_A_ EVRUN_NOWAIT);
3346 } 5077 }
3347 } 5078 }
3348} 5079}
3349 5080
3350static void 5081static void
… …
3356 5087
3357 { 5088 {
3358 EV_P = w->other; 5089 EV_P = w->other;
3359 5090
3360 ev_loop_fork (EV_A); 5091 ev_loop_fork (EV_A);
3361 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5092 ev_run (EV_A_ EVRUN_NOWAIT);
3362 } 5093 }
3363 5094
3364 ev_embed_start (EV_A_ w); 5095 ev_embed_start (EV_A_ w);
3365} 5096}
3366 5097
… …
3371 ev_idle_stop (EV_A_ idle); 5102 ev_idle_stop (EV_A_ idle);
3372} 5103}
3373#endif 5104#endif
3374 5105
3375void 5106void
3376ev_embed_start (EV_P_ ev_embed *w) 5107ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3377{ 5108{
3378 if (expect_false (ev_is_active (w))) 5109 if (ecb_expect_false (ev_is_active (w)))
3379 return; 5110 return;
3380 5111
3381 { 5112 {
3382 EV_P = w->other; 5113 EV_P = w->other;
3383 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5114 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3402 5133
3403 EV_FREQUENT_CHECK; 5134 EV_FREQUENT_CHECK;
3404} 5135}
3405 5136
3406void 5137void
3407ev_embed_stop (EV_P_ ev_embed *w) 5138ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3408{ 5139{
3409 clear_pending (EV_A_ (W)w); 5140 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 5141 if (ecb_expect_false (!ev_is_active (w)))
3411 return; 5142 return;
3412 5143
3413 EV_FREQUENT_CHECK; 5144 EV_FREQUENT_CHECK;
3414 5145
3415 ev_io_stop (EV_A_ &w->io); 5146 ev_io_stop (EV_A_ &w->io);
3416 ev_prepare_stop (EV_A_ &w->prepare); 5147 ev_prepare_stop (EV_A_ &w->prepare);
3417 ev_fork_stop (EV_A_ &w->fork); 5148 ev_fork_stop (EV_A_ &w->fork);
3418 5149
5150 ev_stop (EV_A_ (W)w);
5151
3419 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
3420} 5153}
3421#endif 5154#endif
3422 5155
3423#if EV_FORK_ENABLE 5156#if EV_FORK_ENABLE
3424void 5157void
3425ev_fork_start (EV_P_ ev_fork *w) 5158ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3426{ 5159{
3427 if (expect_false (ev_is_active (w))) 5160 if (ecb_expect_false (ev_is_active (w)))
3428 return; 5161 return;
3429 5162
3430 EV_FREQUENT_CHECK; 5163 EV_FREQUENT_CHECK;
3431 5164
3432 ev_start (EV_A_ (W)w, ++forkcnt); 5165 ev_start (EV_A_ (W)w, ++forkcnt);
3433 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5166 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3434 forks [forkcnt - 1] = w; 5167 forks [forkcnt - 1] = w;
3435 5168
3436 EV_FREQUENT_CHECK; 5169 EV_FREQUENT_CHECK;
3437} 5170}
3438 5171
3439void 5172void
3440ev_fork_stop (EV_P_ ev_fork *w) 5173ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3441{ 5174{
3442 clear_pending (EV_A_ (W)w); 5175 clear_pending (EV_A_ (W)w);
3443 if (expect_false (!ev_is_active (w))) 5176 if (ecb_expect_false (!ev_is_active (w)))
3444 return; 5177 return;
3445 5178
3446 EV_FREQUENT_CHECK; 5179 EV_FREQUENT_CHECK;
3447 5180
3448 { 5181 {
… …
3456 5189
3457 EV_FREQUENT_CHECK; 5190 EV_FREQUENT_CHECK;
3458} 5191}
3459#endif 5192#endif
3460 5193
5194#if EV_CLEANUP_ENABLE
5195void
5196ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5197{
5198 if (ecb_expect_false (ev_is_active (w)))
5199 return;
5200
5201 EV_FREQUENT_CHECK;
5202
5203 ev_start (EV_A_ (W)w, ++cleanupcnt);
5204 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5205 cleanups [cleanupcnt - 1] = w;
5206
5207 /* cleanup watchers should never keep a refcount on the loop */
5208 ev_unref (EV_A);
5209 EV_FREQUENT_CHECK;
5210}
5211
5212void
5213ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5214{
5215 clear_pending (EV_A_ (W)w);
5216 if (ecb_expect_false (!ev_is_active (w)))
5217 return;
5218
5219 EV_FREQUENT_CHECK;
5220 ev_ref (EV_A);
5221
5222 {
5223 int active = ev_active (w);
5224
5225 cleanups [active - 1] = cleanups [--cleanupcnt];
5226 ev_active (cleanups [active - 1]) = active;
5227 }
5228
5229 ev_stop (EV_A_ (W)w);
5230
5231 EV_FREQUENT_CHECK;
5232}
5233#endif
5234
3461#if EV_ASYNC_ENABLE 5235#if EV_ASYNC_ENABLE
3462void 5236void
3463ev_async_start (EV_P_ ev_async *w) 5237ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3464{ 5238{
3465 if (expect_false (ev_is_active (w))) 5239 if (ecb_expect_false (ev_is_active (w)))
3466 return; 5240 return;
3467 5241
5242 w->sent = 0;
5243
3468 evpipe_init (EV_A); 5244 evpipe_init (EV_A);
3469 5245
3470 EV_FREQUENT_CHECK; 5246 EV_FREQUENT_CHECK;
3471 5247
3472 ev_start (EV_A_ (W)w, ++asynccnt); 5248 ev_start (EV_A_ (W)w, ++asynccnt);
3473 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5249 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3474 asyncs [asynccnt - 1] = w; 5250 asyncs [asynccnt - 1] = w;
3475 5251
3476 EV_FREQUENT_CHECK; 5252 EV_FREQUENT_CHECK;
3477} 5253}
3478 5254
3479void 5255void
3480ev_async_stop (EV_P_ ev_async *w) 5256ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3481{ 5257{
3482 clear_pending (EV_A_ (W)w); 5258 clear_pending (EV_A_ (W)w);
3483 if (expect_false (!ev_is_active (w))) 5259 if (ecb_expect_false (!ev_is_active (w)))
3484 return; 5260 return;
3485 5261
3486 EV_FREQUENT_CHECK; 5262 EV_FREQUENT_CHECK;
3487 5263
3488 { 5264 {
… …
3496 5272
3497 EV_FREQUENT_CHECK; 5273 EV_FREQUENT_CHECK;
3498} 5274}
3499 5275
3500void 5276void
3501ev_async_send (EV_P_ ev_async *w) 5277ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3502{ 5278{
3503 w->sent = 1; 5279 w->sent = 1;
3504 evpipe_write (EV_A_ &async_pending); 5280 evpipe_write (EV_A_ &async_pending);
3505} 5281}
3506#endif 5282#endif
… …
3543 5319
3544 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5320 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3545} 5321}
3546 5322
3547void 5323void
3548ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5324ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3549{ 5325{
3550 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5326 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3551
3552 if (expect_false (!once))
3553 {
3554 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3555 return;
3556 }
3557 5327
3558 once->cb = cb; 5328 once->cb = cb;
3559 once->arg = arg; 5329 once->arg = arg;
3560 5330
3561 ev_init (&once->io, once_cb_io); 5331 ev_init (&once->io, once_cb_io);
… …
3574} 5344}
3575 5345
3576/*****************************************************************************/ 5346/*****************************************************************************/
3577 5347
3578#if EV_WALK_ENABLE 5348#if EV_WALK_ENABLE
5349ecb_cold
3579void 5350void
3580ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5351ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3581{ 5352{
3582 int i, j; 5353 int i, j;
3583 ev_watcher_list *wl, *wn; 5354 ev_watcher_list *wl, *wn;
3584 5355
3585 if (types & (EV_IO | EV_EMBED)) 5356 if (types & (EV_IO | EV_EMBED))
… …
3628 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5399 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3629#endif 5400#endif
3630 5401
3631#if EV_IDLE_ENABLE 5402#if EV_IDLE_ENABLE
3632 if (types & EV_IDLE) 5403 if (types & EV_IDLE)
3633 for (j = NUMPRI; i--; ) 5404 for (j = NUMPRI; j--; )
3634 for (i = idlecnt [j]; i--; ) 5405 for (i = idlecnt [j]; i--; )
3635 cb (EV_A_ EV_IDLE, idles [j][i]); 5406 cb (EV_A_ EV_IDLE, idles [j][i]);
3636#endif 5407#endif
3637 5408
3638#if EV_FORK_ENABLE 5409#if EV_FORK_ENABLE
… …
3646 if (types & EV_ASYNC) 5417 if (types & EV_ASYNC)
3647 for (i = asynccnt; i--; ) 5418 for (i = asynccnt; i--; )
3648 cb (EV_A_ EV_ASYNC, asyncs [i]); 5419 cb (EV_A_ EV_ASYNC, asyncs [i]);
3649#endif 5420#endif
3650 5421
5422#if EV_PREPARE_ENABLE
3651 if (types & EV_PREPARE) 5423 if (types & EV_PREPARE)
3652 for (i = preparecnt; i--; ) 5424 for (i = preparecnt; i--; )
3653#if EV_EMBED_ENABLE 5425# if EV_EMBED_ENABLE
3654 if (ev_cb (prepares [i]) != embed_prepare_cb) 5426 if (ev_cb (prepares [i]) != embed_prepare_cb)
3655#endif 5427# endif
3656 cb (EV_A_ EV_PREPARE, prepares [i]); 5428 cb (EV_A_ EV_PREPARE, prepares [i]);
5429#endif
3657 5430
5431#if EV_CHECK_ENABLE
3658 if (types & EV_CHECK) 5432 if (types & EV_CHECK)
3659 for (i = checkcnt; i--; ) 5433 for (i = checkcnt; i--; )
3660 cb (EV_A_ EV_CHECK, checks [i]); 5434 cb (EV_A_ EV_CHECK, checks [i]);
5435#endif
3661 5436
5437#if EV_SIGNAL_ENABLE
3662 if (types & EV_SIGNAL) 5438 if (types & EV_SIGNAL)
3663 for (i = 0; i < EV_NSIG - 1; ++i) 5439 for (i = 0; i < EV_NSIG - 1; ++i)
3664 for (wl = signals [i].head; wl; ) 5440 for (wl = signals [i].head; wl; )
3665 { 5441 {
3666 wn = wl->next; 5442 wn = wl->next;
3667 cb (EV_A_ EV_SIGNAL, wl); 5443 cb (EV_A_ EV_SIGNAL, wl);
3668 wl = wn; 5444 wl = wn;
3669 } 5445 }
5446#endif
3670 5447
5448#if EV_CHILD_ENABLE
3671 if (types & EV_CHILD) 5449 if (types & EV_CHILD)
3672 for (i = EV_PID_HASHSIZE; i--; ) 5450 for (i = (EV_PID_HASHSIZE); i--; )
3673 for (wl = childs [i]; wl; ) 5451 for (wl = childs [i]; wl; )
3674 { 5452 {
3675 wn = wl->next; 5453 wn = wl->next;
3676 cb (EV_A_ EV_CHILD, wl); 5454 cb (EV_A_ EV_CHILD, wl);
3677 wl = wn; 5455 wl = wn;
3678 } 5456 }
5457#endif
3679/* EV_STAT 0x00001000 /* stat data changed */ 5458/* EV_STAT 0x00001000 /* stat data changed */
3680/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5459/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3681} 5460}
3682#endif 5461#endif
3683 5462
3684#if EV_MULTIPLICITY 5463#if EV_MULTIPLICITY
3685 #include "ev_wrap.h" 5464 #include "ev_wrap.h"
3686#endif 5465#endif
3687 5466
3688#ifdef __cplusplus
3689}
3690#endif
3691

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