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Comparing libev/ev.c (file contents):
Revision 1.364 by root, Sun Oct 24 21:51:03 2010 UTC vs.
Revision 1.528 by root, Sat Jan 25 19:40:46 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 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,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52# endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
109# else 115# else
110# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
115# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
117# endif 141# endif
118# else 142# else
… …
153# endif 177# endif
154# else 178# else
155# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
157# endif 181# endif
158 182
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
159#endif 190# endif
160 191
161#include <math.h> 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
162#include <stdlib.h> 204#include <stdlib.h>
163#include <string.h> 205#include <string.h>
164#include <fcntl.h> 206#include <fcntl.h>
165#include <stddef.h> 207#include <stddef.h>
166 208
… …
178# include EV_H 220# include EV_H
179#else 221#else
180# include "ev.h" 222# include "ev.h"
181#endif 223#endif
182 224
183EV_CPP(extern "C" {) 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
234#endif
184 235
185#ifndef _WIN32 236#ifndef _WIN32
186# include <sys/time.h> 237# include <sys/time.h>
187# include <sys/wait.h> 238# include <sys/wait.h>
188# include <unistd.h> 239# include <unistd.h>
189#else 240#else
190# include <io.h> 241# include <io.h>
191# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
192# include <windows.h> 244# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
195# endif 247# endif
196# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
197#endif 249#endif
198 250
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
206
207/* 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 */
208 252
209/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 254#if defined EV_NSIG
211/* use what's provided */ 255/* use what's provided */
212#elif defined (NSIG) 256#elif defined NSIG
213# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 258#elif defined _NSIG
215# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 260#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 262#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 266#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 268#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 272#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 274#else
231# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 276#endif
233/* but consider reporting it, too! :) */ 277
234# define EV_NSIG 65 278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
235#endif 280#endif
236 281
237#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 285# else
241# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
242# endif 287# endif
243#endif 288#endif
244 289
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
245#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 302# else
249# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
250# endif 304# endif
251#endif 305#endif
… …
288 342
289#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
290# define EV_USE_PORT 0 344# define EV_USE_PORT 0
291#endif 345#endif
292 346
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 0 /* was: 1, always off by default */
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
293#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
295# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
296# else 366# else
297# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
320# else 390# else
321# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
322# endif 392# endif
323#endif 393#endif
324 394
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
400# endif
401#endif
402
325#if 0 /* debugging */ 403#if 0 /* debugging */
326# define EV_VERIFY 3 404# define EV_VERIFY 3
327# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
328# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
329#endif 407#endif
… …
338 416
339#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 419#endif
342 420
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
435#endif
436
343/* 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, */
344/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 440# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
351# else 446# else
352# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
354# endif 449# endif
355#endif 450#endif
356 451
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 452/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 453
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
365#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
368#endif 457#endif
369 458
… …
375#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
376# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
378#endif 467#endif
379 468
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
380#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
381# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
382# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
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
383# endif 506# endif
384#endif 507#endif
385 508
386#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
387# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
391# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
393# endif 516# endif
394#endif 517#endif
395 518
396#if EV_SELECT_IS_WINSOCKET
397# include <winsock.h>
398#endif
399
400#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
401/* 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 */
402# include <stdint.h> 521# include <stdint.h>
403# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
404# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
405# endif 524# endif
406# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
412# endif 531# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif 533#endif
415 534
416#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
417/* 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 */
418# include <stdint.h> 537# include <stdint.h>
419# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
421# endif 540# endif
422# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
424# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
425# else 544# else
426# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
427# endif 546# endif
428# endif 547# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
430 549
431struct signalfd_siginfo 550struct signalfd_siginfo
432{ 551{
433 uint32_t ssi_signo; 552 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
435}; 554};
436#endif 555#endif
437 556
438/**/ 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
564# endif
565#endif
566
567/*****************************************************************************/
439 568
440#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
441# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
442#else 571#else
443# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
444#endif 573#endif
445 574
446/* 575/*
447 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
448 * It is added to ev_rt_now when scheduling periodics
449 * to ensure progress, time-wise, even when rounding
450 * errors are against us.
451 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
452 * Better solutions welcome.
453 */ 578 */
454#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 */
455 581
456#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) */
457#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) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
458 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
459#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_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#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_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
461 603
604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
605/* ECB.H BEGIN */
606/*
607 * libecb - http://software.schmorp.de/pkg/libecb
608 *
609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
610 * Copyright (©) 2011 Emanuele Giaquinta
611 * All rights reserved.
612 *
613 * Redistribution and use in source and binary forms, with or without modifica-
614 * tion, are permitted provided that the following conditions are met:
615 *
616 * 1. Redistributions of source code must retain the above copyright notice,
617 * this list of conditions and the following disclaimer.
618 *
619 * 2. Redistributions in binary form must reproduce the above copyright
620 * notice, this list of conditions and the following disclaimer in the
621 * documentation and/or other materials provided with the distribution.
622 *
623 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
624 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
625 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
626 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
627 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
630 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
644 */
645
646#ifndef ECB_H
647#define ECB_H
648
649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
653
654#if defined (_WIN32) && !defined (__MINGW32__)
655 typedef signed char int8_t;
656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
659 typedef signed short int16_t;
660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
663 typedef signed int int32_t;
664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
462#if __GNUC__ >= 4 667 #if __GNUC__
463# define expect(expr,value) __builtin_expect ((expr),(value)) 668 typedef signed long long int64_t;
464# define noinline __attribute__ ((noinline)) 669 typedef unsigned long long uint64_t;
670 #else /* _MSC_VER || __BORLANDC__ */
671 typedef signed __int64 int64_t;
672 typedef unsigned __int64 uint64_t;
673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
676 #ifdef _WIN64
677 #define ECB_PTRSIZE 8
678 typedef uint64_t uintptr_t;
679 typedef int64_t intptr_t;
680 #else
681 #define ECB_PTRSIZE 4
682 typedef uint32_t uintptr_t;
683 typedef int32_t intptr_t;
684 #endif
465#else 685#else
466# define expect(expr,value) (expr) 686 #include <inttypes.h>
467# define noinline 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 688 #define ECB_PTRSIZE 8
469# define inline 689 #else
690 #define ECB_PTRSIZE 4
691 #endif
470# endif 692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
471#endif 702 #endif
703#endif
472 704
705/* work around x32 idiocy by defining proper macros */
706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
711 #endif
712#endif
713
714/* many compilers define _GNUC_ to some versions but then only implement
715 * what their idiot authors think are the "more important" extensions,
716 * causing enormous grief in return for some better fake benchmark numbers.
717 * or so.
718 * we try to detect these and simply assume they are not gcc - if they have
719 * an issue with that they should have done it right in the first place.
720 */
721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
722 #define ECB_GCC_VERSION(major,minor) 0
723#else
724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
725#endif
726
727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
728
729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
741#define ECB_CPP (__cplusplus+0)
742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
757
758#if ECB_CPP
759 #define ECB_EXTERN_C extern "C"
760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
761 #define ECB_EXTERN_C_END }
762#else
763 #define ECB_EXTERN_C extern
764 #define ECB_EXTERN_C_BEG
765 #define ECB_EXTERN_C_END
766#endif
767
768/*****************************************************************************/
769
770/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
771/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
772
773#if ECB_NO_THREADS
774 #define ECB_NO_SMP 1
775#endif
776
777#if ECB_NO_SMP
778 #define ECB_MEMORY_FENCE do { } while (0)
779#endif
780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
790#ifndef ECB_MEMORY_FENCE
791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
793 #if __i386 || __i386__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
797 #elif ECB_GCC_AMD64
798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
823 #elif defined __s390__ || defined __s390x__
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
829 #elif defined __alpha__
830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
831 #elif defined __hppa__
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
834 #elif defined __ia64__
835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #endif
843 #endif
844#endif
845
846#ifndef ECB_MEMORY_FENCE
847 #if ECB_GCC_VERSION(4,7)
848 /* see comment below (stdatomic.h) about the C11 memory model. */
849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
853
854 #elif ECB_CLANG_EXTENSION(c_atomic)
855 /* see comment below (stdatomic.h) about the C11 memory model. */
856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
860
861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
862 #define ECB_MEMORY_FENCE __sync_synchronize ()
863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
874 #elif defined _WIN32
875 #include <WinNT.h>
876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
878 #include <mbarrier.h>
879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
883 #elif __xlC__
884 #define ECB_MEMORY_FENCE __sync ()
885 #endif
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
890 /* we assume that these memory fences work on all variables/all memory accesses, */
891 /* not just C11 atomics and atomic accesses */
892 #include <stdatomic.h>
893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
896 #endif
897#endif
898
899#ifndef ECB_MEMORY_FENCE
900 #if !ECB_AVOID_PTHREADS
901 /*
902 * if you get undefined symbol references to pthread_mutex_lock,
903 * or failure to find pthread.h, then you should implement
904 * the ECB_MEMORY_FENCE operations for your cpu/compiler
905 * OR provide pthread.h and link against the posix thread library
906 * of your system.
907 */
908 #include <pthread.h>
909 #define ECB_NEEDS_PTHREADS 1
910 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
911
912 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
913 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
914 #endif
915#endif
916
917#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
919#endif
920
921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
929/*****************************************************************************/
930
931#if ECB_CPP
932 #define ecb_inline static inline
933#elif ECB_GCC_VERSION(2,5)
934 #define ecb_inline static __inline__
935#elif ECB_C99
936 #define ecb_inline static inline
937#else
938 #define ecb_inline static
939#endif
940
941#if ECB_GCC_VERSION(3,3)
942 #define ecb_restrict __restrict__
943#elif ECB_C99
944 #define ecb_restrict restrict
945#else
946 #define ecb_restrict
947#endif
948
949typedef int ecb_bool;
950
951#define ECB_CONCAT_(a, b) a ## b
952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
953#define ECB_STRINGIFY_(a) # a
954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
956
957#define ecb_function_ ecb_inline
958
959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
983#else
984 #define ecb_prefetch(addr,rw,locality)
985#endif
986
987/* no emulation for ecb_decltype */
988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
993 #define ecb_decltype(x) __typeof__ (x)
994#endif
995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
1016#define ecb_unused ecb_attribute ((__unused__))
1017#define ecb_const ecb_attribute ((__const__))
1018#define ecb_pure ecb_attribute ((__pure__))
1019
1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
1028#else
1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
1030#endif
1031
1032#if ECB_GCC_VERSION(4,3)
1033 #define ecb_artificial ecb_attribute ((__artificial__))
1034 #define ecb_hot ecb_attribute ((__hot__))
1035 #define ecb_cold ecb_attribute ((__cold__))
1036#else
1037 #define ecb_artificial
1038 #define ecb_hot
1039 #define ecb_cold
1040#endif
1041
1042/* put around conditional expressions if you are very sure that the */
1043/* expression is mostly true or mostly false. note that these return */
1044/* booleans, not the expression. */
473#define expect_false(expr) expect ((expr) != 0, 0) 1045#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
474#define expect_true(expr) expect ((expr) != 0, 1) 1046#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1047/* for compatibility to the rest of the world */
1048#define ecb_likely(expr) ecb_expect_true (expr)
1049#define ecb_unlikely(expr) ecb_expect_false (expr)
1050
1051/* count trailing zero bits and count # of one bits */
1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1059 #define ecb_ctz32(x) __builtin_ctz (x)
1060 #define ecb_ctz64(x) __builtin_ctzll (x)
1061 #define ecb_popcount32(x) __builtin_popcount (x)
1062 /* no popcountll */
1063#else
1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1065 ecb_function_ ecb_const int
1066 ecb_ctz32 (uint32_t x)
1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
1073 int r = 0;
1074
1075 x &= ~x + 1; /* this isolates the lowest bit */
1076
1077#if ECB_branchless_on_i386
1078 r += !!(x & 0xaaaaaaaa) << 0;
1079 r += !!(x & 0xcccccccc) << 1;
1080 r += !!(x & 0xf0f0f0f0) << 2;
1081 r += !!(x & 0xff00ff00) << 3;
1082 r += !!(x & 0xffff0000) << 4;
1083#else
1084 if (x & 0xaaaaaaaa) r += 1;
1085 if (x & 0xcccccccc) r += 2;
1086 if (x & 0xf0f0f0f0) r += 4;
1087 if (x & 0xff00ff00) r += 8;
1088 if (x & 0xffff0000) r += 16;
1089#endif
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1096 ecb_function_ ecb_const int
1097 ecb_ctz64 (uint64_t x)
1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
1104 int shift = x & 0xffffffff ? 0 : 32;
1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
1107 }
1108
1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1110 ecb_function_ ecb_const int
1111 ecb_popcount32 (uint32_t x)
1112 {
1113 x -= (x >> 1) & 0x55555555;
1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
1116 x *= 0x01010101;
1117
1118 return x >> 24;
1119 }
1120
1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
1129 int r = 0;
1130
1131 if (x >> 16) { x >>= 16; r += 16; }
1132 if (x >> 8) { x >>= 8; r += 8; }
1133 if (x >> 4) { x >>= 4; r += 4; }
1134 if (x >> 2) { x >>= 2; r += 2; }
1135 if (x >> 1) { r += 1; }
1136
1137 return r;
1138#endif
1139 }
1140
1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
1149 int r = 0;
1150
1151 if (x >> 32) { x >>= 32; r += 32; }
1152
1153 return r + ecb_ld32 (x);
1154#endif
1155 }
1156#endif
1157
1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1162
1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1165{
1166 return ( (x * 0x0802U & 0x22110U)
1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1168}
1169
1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1172{
1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1176 x = ( x >> 8 ) | ( x << 8);
1177
1178 return x;
1179}
1180
1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1183{
1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1188 x = ( x >> 16 ) | ( x << 16);
1189
1190 return x;
1191}
1192
1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
1194/* so for this version we are lazy */
1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1196ecb_function_ ecb_const int
1197ecb_popcount64 (uint64_t x)
1198{
1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1200}
1201
1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1210
1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1271#else
1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1273 ecb_function_ ecb_const uint16_t
1274 ecb_bswap16 (uint16_t x)
1275 {
1276 return ecb_rotl16 (x, 8);
1277 }
1278
1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1280 ecb_function_ ecb_const uint32_t
1281 ecb_bswap32 (uint32_t x)
1282 {
1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1284 }
1285
1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1287 ecb_function_ ecb_const uint64_t
1288 ecb_bswap64 (uint64_t x)
1289 {
1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1291 }
1292#endif
1293
1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1295 #define ecb_unreachable() __builtin_unreachable ()
1296#else
1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1300#endif
1301
1302/* try to tell the compiler that some condition is definitely true */
1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1304
1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1306ecb_inline ecb_const uint32_t
1307ecb_byteorder_helper (void)
1308{
1309 /* the union code still generates code under pressure in gcc, */
1310 /* but less than using pointers, and always seems to */
1311 /* successfully return a constant. */
1312 /* the reason why we have this horrible preprocessor mess */
1313 /* is to avoid it in all cases, at least on common architectures */
1314 /* or when using a recent enough gcc version (>= 4.6) */
1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1318 return 0x44332211;
1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1322 return 0x11223344;
1323#else
1324 union
1325 {
1326 uint8_t c[4];
1327 uint32_t u;
1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1329 return u.u;
1330#endif
1331}
1332
1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1409
1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1412#else
1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1414#endif
1415
1416#if ECB_CPP
1417 template<typename T>
1418 static inline T ecb_div_rd (T val, T div)
1419 {
1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1421 }
1422 template<typename T>
1423 static inline T ecb_div_ru (T val, T div)
1424 {
1425 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1426 }
1427#else
1428 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1429 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1430#endif
1431
1432#if ecb_cplusplus_does_not_suck
1433 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1434 template<typename T, int N>
1435 static inline int ecb_array_length (const T (&arr)[N])
1436 {
1437 return N;
1438 }
1439#else
1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1441#endif
1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1541/*******************************************************************************/
1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1543
1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1546#if 0 \
1547 || __i386 || __i386__ \
1548 || ECB_GCC_AMD64 \
1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1550 || defined __s390__ || defined __s390x__ \
1551 || defined __mips__ \
1552 || defined __alpha__ \
1553 || defined __hppa__ \
1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1561 #define ECB_STDFP 1
1562#else
1563 #define ECB_STDFP 0
1564#endif
1565
1566#ifndef ECB_NO_LIBM
1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1591 /* convert a float to ieee single/binary32 */
1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1593 ecb_function_ ecb_const uint32_t
1594 ecb_float_to_binary32 (float x)
1595 {
1596 uint32_t r;
1597
1598 #if ECB_STDFP
1599 memcpy (&r, &x, 4);
1600 #else
1601 /* slow emulation, works for anything but -0 */
1602 uint32_t m;
1603 int e;
1604
1605 if (x == 0e0f ) return 0x00000000U;
1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1608 if (x != x ) return 0x7fbfffffU;
1609
1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1611
1612 r = m & 0x80000000U;
1613
1614 if (r)
1615 m = -m;
1616
1617 if (e <= -126)
1618 {
1619 m &= 0xffffffU;
1620 m >>= (-125 - e);
1621 e = -126;
1622 }
1623
1624 r |= (e + 126) << 23;
1625 r |= m & 0x7fffffU;
1626 #endif
1627
1628 return r;
1629 }
1630
1631 /* converts an ieee single/binary32 to a float */
1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1633 ecb_function_ ecb_const float
1634 ecb_binary32_to_float (uint32_t x)
1635 {
1636 float r;
1637
1638 #if ECB_STDFP
1639 memcpy (&r, &x, 4);
1640 #else
1641 /* emulation, only works for normals and subnormals and +0 */
1642 int neg = x >> 31;
1643 int e = (x >> 23) & 0xffU;
1644
1645 x &= 0x7fffffU;
1646
1647 if (e)
1648 x |= 0x800000U;
1649 else
1650 e = 1;
1651
1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1654
1655 r = neg ? -r : r;
1656 #endif
1657
1658 return r;
1659 }
1660
1661 /* convert a double to ieee double/binary64 */
1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1663 ecb_function_ ecb_const uint64_t
1664 ecb_double_to_binary64 (double x)
1665 {
1666 uint64_t r;
1667
1668 #if ECB_STDFP
1669 memcpy (&r, &x, 8);
1670 #else
1671 /* slow emulation, works for anything but -0 */
1672 uint64_t m;
1673 int e;
1674
1675 if (x == 0e0 ) return 0x0000000000000000U;
1676 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1677 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1678 if (x != x ) return 0X7ff7ffffffffffffU;
1679
1680 m = frexp (x, &e) * 0x20000000000000U;
1681
1682 r = m & 0x8000000000000000;;
1683
1684 if (r)
1685 m = -m;
1686
1687 if (e <= -1022)
1688 {
1689 m &= 0x1fffffffffffffU;
1690 m >>= (-1021 - e);
1691 e = -1022;
1692 }
1693
1694 r |= ((uint64_t)(e + 1022)) << 52;
1695 r |= m & 0xfffffffffffffU;
1696 #endif
1697
1698 return r;
1699 }
1700
1701 /* converts an ieee double/binary64 to a double */
1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1703 ecb_function_ ecb_const double
1704 ecb_binary64_to_double (uint64_t x)
1705 {
1706 double r;
1707
1708 #if ECB_STDFP
1709 memcpy (&r, &x, 8);
1710 #else
1711 /* emulation, only works for normals and subnormals and +0 */
1712 int neg = x >> 63;
1713 int e = (x >> 52) & 0x7ffU;
1714
1715 x &= 0xfffffffffffffU;
1716
1717 if (e)
1718 x |= 0x10000000000000U;
1719 else
1720 e = 1;
1721
1722 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1723 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1724
1725 r = neg ? -r : r;
1726 #endif
1727
1728 return r;
1729 }
1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1747#endif
1748
1749#endif
1750
1751/* ECB.H END */
1752
1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1754/* if your architecture doesn't need memory fences, e.g. because it is
1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1757 * libev, in which cases the memory fences become nops.
1758 * alternatively, you can remove this #error and link against libpthread,
1759 * which will then provide the memory fences.
1760 */
1761# error "memory fences not defined for your architecture, please report"
1762#endif
1763
1764#ifndef ECB_MEMORY_FENCE
1765# define ECB_MEMORY_FENCE do { } while (0)
1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1768#endif
1769
475#define inline_size static inline 1770#define inline_size ecb_inline
476 1771
477#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
478# define inline_speed static inline 1773# define inline_speed ecb_inline
479#else 1774#else
480# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
481#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
482 1843
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484 1845
485#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
487#else 1848#else
488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif 1850#endif
490 1851
491#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
492#define EMPTY2(a,b) /* used to suppress some warnings */
493 1853
494typedef ev_watcher *W; 1854typedef ev_watcher *W;
495typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
496typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
497 1857
… …
522# include "ev_win32.c" 1882# include "ev_win32.c"
523#endif 1883#endif
524 1884
525/*****************************************************************************/ 1885/*****************************************************************************/
526 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1891/* define a suitable floor function (only used by periodics atm) */
1892
1893#if EV_USE_FLOOR
1894# include <math.h>
1895# define ev_floor(v) floor (v)
1896#else
1897
1898#include <float.h>
1899
1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1902static ev_tstamp
1903ev_floor (ev_tstamp v)
1904{
1905 /* the choice of shift factor is not terribly important */
1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1908#else
1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1910#endif
1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1920 /* argument too large for an unsigned long? then reduce it */
1921 if (ecb_expect_false (v >= shift))
1922 {
1923 ev_tstamp f;
1924
1925 if (v == v - 1.)
1926 return v; /* very large numbers are assumed to be integer */
1927
1928 f = shift * ev_floor (v * (1. / shift));
1929 return f + ev_floor (v - f);
1930 }
1931
1932 /* fits into an unsigned long */
1933 return (unsigned long)v;
1934}
1935
1936#endif
1937
1938/*****************************************************************************/
1939
527#ifdef __linux 1940#ifdef __linux
528# include <sys/utsname.h> 1941# include <sys/utsname.h>
529#endif 1942#endif
530 1943
1944ecb_noinline ecb_cold
531static unsigned int noinline 1945static unsigned int
532ev_linux_version (void) 1946ev_linux_version (void)
533{ 1947{
534#ifdef __linux 1948#ifdef __linux
535 unsigned int v = 0; 1949 unsigned int v = 0;
536 struct utsname buf; 1950 struct utsname buf;
… …
565} 1979}
566 1980
567/*****************************************************************************/ 1981/*****************************************************************************/
568 1982
569#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
570static void noinline 1984ecb_noinline ecb_cold
1985static void
571ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
572{ 1987{
573 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
574} 1989}
575#endif 1990#endif
576 1991
577static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
578 1993
1994ecb_cold
579void 1995void
580ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
581{ 1997{
582 syserr_cb = cb; 1998 syserr_cb = cb;
583} 1999}
584 2000
585static void noinline 2001ecb_noinline ecb_cold
2002static void
586ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
587{ 2004{
588 if (!msg) 2005 if (!msg)
589 msg = "(libev) system error"; 2006 msg = "(libev) system error";
590 2007
591 if (syserr_cb) 2008 if (syserr_cb)
592 syserr_cb (msg); 2009 syserr_cb (msg);
593 else 2010 else
594 { 2011 {
595#if EV_AVOID_STDIO 2012#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg); 2013 ev_printerr (msg);
599 ev_printerr (": "); 2014 ev_printerr (": ");
600 ev_printerr (err); 2015 ev_printerr (strerror (errno));
601 ev_printerr ("\n"); 2016 ev_printerr ("\n");
602#else 2017#else
603 perror (msg); 2018 perror (msg);
604#endif 2019#endif
605 abort (); 2020 abort ();
606 } 2021 }
607} 2022}
608 2023
609static void * 2024static void *
610ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
611{ 2026{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
615 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
616 * implement realloc (x, 0) (as required by both ansi c-89 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
617 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
2030 * recently, also (at least) fedora and debian started breaking it,
2031 * despite documenting it otherwise.
618 */ 2032 */
619 2033
620 if (size) 2034 if (size)
621 return realloc (ptr, size); 2035 return realloc (ptr, size);
622 2036
623 free (ptr); 2037 free (ptr);
624 return 0; 2038 return 0;
625#endif
626} 2039}
627 2040
628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
629 2042
2043ecb_cold
630void 2044void
631ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
632{ 2046{
633 alloc = cb; 2047 alloc = cb;
634} 2048}
635 2049
636inline_speed void * 2050inline_speed void *
… …
639 ptr = alloc (ptr, size); 2053 ptr = alloc (ptr, size);
640 2054
641 if (!ptr && size) 2055 if (!ptr && size)
642 { 2056 {
643#if EV_AVOID_STDIO 2057#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n"); 2058 ev_printerr ("(libev) memory allocation failed, aborting.\n");
645#else 2059#else
646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 2060 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
647#endif 2061#endif
648 abort (); 2062 abort ();
649 } 2063 }
650 2064
651 return ptr; 2065 return ptr;
… …
663typedef struct 2077typedef struct
664{ 2078{
665 WL head; 2079 WL head;
666 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
669 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
670#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif 2086#endif
673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
674 SOCKET handle; 2088 SOCKET handle;
… …
724 #undef VAR 2138 #undef VAR
725 }; 2139 };
726 #include "ev_wrap.h" 2140 #include "ev_wrap.h"
727 2141
728 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
729 struct ev_loop *ev_default_loop_ptr; 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
730 2144
731#else 2145#else
732 2146
733 ev_tstamp ev_rt_now; 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
734 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
735 #include "ev_vars.h" 2149 #include "ev_vars.h"
736 #undef VAR 2150 #undef VAR
737 2151
738 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
739 2153
740#endif 2154#endif
741 2155
742#if EV_FEATURE_API 2156#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else 2160#else
747# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
753 2167
754/*****************************************************************************/ 2168/*****************************************************************************/
755 2169
756#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
757ev_tstamp 2171ev_tstamp
758ev_time (void) 2172ev_time (void) EV_NOEXCEPT
759{ 2173{
760#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
761 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
762 { 2176 {
763 struct timespec ts; 2177 struct timespec ts;
764 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
765 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
766 } 2180 }
767#endif 2181#endif
768 2182
2183 {
769 struct timeval tv; 2184 struct timeval tv;
770 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
771 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
772} 2188}
773#endif 2189#endif
774 2190
775inline_size ev_tstamp 2191inline_size ev_tstamp
776get_clock (void) 2192get_clock (void)
777{ 2193{
778#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
779 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
780 { 2196 {
781 struct timespec ts; 2197 struct timespec ts;
782 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
783 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
784 } 2200 }
785#endif 2201#endif
786 2202
787 return ev_time (); 2203 return ev_time ();
788} 2204}
789 2205
790#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
791ev_tstamp 2207ev_tstamp
792ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
793{ 2209{
794 return ev_rt_now; 2210 return ev_rt_now;
795} 2211}
796#endif 2212#endif
797 2213
798void 2214void
799ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
800{ 2216{
801 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
802 { 2218 {
803#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
804 struct timespec ts; 2220 struct timespec ts;
805 2221
806 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
807 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
808#elif defined(_WIN32) 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
809 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
810#else 2228#else
811 struct timeval tv; 2229 struct timeval tv;
812 2230
813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
814 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
832 2250
833 do 2251 do
834 ncur <<= 1; 2252 ncur <<= 1;
835 while (cnt > ncur); 2253 while (cnt > ncur);
836 2254
837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2255 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2256 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
839 { 2257 {
840 ncur *= elem; 2258 ncur *= elem;
841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2259 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
842 ncur = ncur - sizeof (void *) * 4; 2260 ncur = ncur - sizeof (void *) * 4;
… …
844 } 2262 }
845 2263
846 return ncur; 2264 return ncur;
847} 2265}
848 2266
849static noinline void * 2267ecb_noinline ecb_cold
2268static void *
850array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
851{ 2270{
852 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
853 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
854} 2273}
855 2274
2275#define array_needsize_noinit(base,offset,count)
2276
856#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
858 2279
859#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
860 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
861 { \ 2282 { \
862 int ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
863 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
864 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
865 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
866 } 2287 }
867 2288
868#if 0 2289#if 0
869#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
870 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
880 2301
881/*****************************************************************************/ 2302/*****************************************************************************/
882 2303
883/* dummy callback for pending events */ 2304/* dummy callback for pending events */
884static void noinline 2305ecb_noinline
2306static void
885pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
886{ 2308{
887} 2309}
888 2310
889void noinline 2311ecb_noinline
2312void
890ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
891{ 2314{
892 W w_ = (W)w; 2315 W w_ = (W)w;
893 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
894 2317
895 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
896 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
897 else 2320 else
898 { 2321 {
899 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
900 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
901 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
902 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
903 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
904} 2329}
905 2330
906inline_speed void 2331inline_speed void
907feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
908{ 2333{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
910 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
911} 2336}
912 2337
913inline_size void 2338inline_size void
914feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
949inline_speed void 2374inline_speed void
950fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
951{ 2376{
952 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
953 2378
954 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
956} 2381}
957 2382
958void 2383void
959ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
960{ 2385{
961 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
962 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
963} 2388}
964 2389
… …
967inline_size void 2392inline_size void
968fd_reify (EV_P) 2393fd_reify (EV_P)
969{ 2394{
970 int i; 2395 int i;
971 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
972 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2411 {
2412 int fd = fdchanges [i];
2413 ANFD *anfd = anfds + fd;
2414
2415 if (anfd->reify & EV__IOFDSET && anfd->head)
2416 {
2417 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2418
2419 if (handle != anfd->handle)
2420 {
2421 unsigned long arg;
2422
2423 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2424
2425 /* handle changed, but fd didn't - we need to do it in two steps */
2426 backend_modify (EV_A_ fd, anfd->events, 0);
2427 anfd->events = 0;
2428 anfd->handle = handle;
2429 }
2430 }
2431 }
2432#endif
2433
2434 for (i = 0; i < changecnt; ++i)
973 { 2435 {
974 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
975 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
976 ev_io *w; 2438 ev_io *w;
977 2439
978 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
980 2442
981 anfd->reify = 0; 2443 anfd->reify = 0;
982 2444
983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
984 if (o_reify & EV__IOFDSET)
985 {
986 unsigned long arg;
987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
990 }
991#endif
992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
994 { 2446 {
995 anfd->events = 0; 2447 anfd->events = 0;
996 2448
997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1003 2455
1004 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1005 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1006 } 2458 }
1007 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
1008 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1009} 2468}
1010 2469
1011/* something about the given fd changed */ 2470/* something about the given fd changed */
1012inline_size void 2471inline_size
2472void
1013fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1014{ 2474{
1015 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1016 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
1017 2477
1018 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1019 { 2479 {
1020 ++fdchangecnt; 2480 ++fdchangecnt;
1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1022 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1023 } 2483 }
1024} 2484}
1025 2485
1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void 2487inline_speed ecb_cold void
1028fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1029{ 2489{
1030 ev_io *w; 2490 ev_io *w;
1031 2491
1032 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1036 } 2496 }
1037} 2497}
1038 2498
1039/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1040inline_size int 2500inline_size ecb_cold int
1041fd_valid (int fd) 2501fd_valid (int fd)
1042{ 2502{
1043#ifdef _WIN32 2503#ifdef _WIN32
1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1045#else 2505#else
1046 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1047#endif 2507#endif
1048} 2508}
1049 2509
1050/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1051static void noinline 2511ecb_noinline ecb_cold
2512static void
1052fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1053{ 2514{
1054 int fd; 2515 int fd;
1055 2516
1056 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1058 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1059 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1060} 2521}
1061 2522
1062/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
1063static void noinline 2524ecb_noinline ecb_cold
2525static void
1064fd_enomem (EV_P) 2526fd_enomem (EV_P)
1065{ 2527{
1066 int fd; 2528 int fd;
1067 2529
1068 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1072 break; 2534 break;
1073 } 2535 }
1074} 2536}
1075 2537
1076/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
1077static void noinline 2539ecb_noinline
2540static void
1078fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1079{ 2542{
1080 int fd; 2543 int fd;
1081 2544
1082 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1135 ev_tstamp minat; 2598 ev_tstamp minat;
1136 ANHE *minpos; 2599 ANHE *minpos;
1137 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1138 2601
1139 /* find minimum child */ 2602 /* find minimum child */
1140 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1141 { 2604 {
1142 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1144 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1145 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1146 } 2609 }
1147 else if (pos < E) 2610 else if (pos < E)
1148 { 2611 {
1149 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1150 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1151 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1152 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1153 } 2616 }
1154 else 2617 else
1155 break; 2618 break;
1156 2619
1157 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1165 2628
1166 heap [k] = he; 2629 heap [k] = he;
1167 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1168} 2631}
1169 2632
1170#else /* 4HEAP */ 2633#else /* not 4HEAP */
1171 2634
1172#define HEAP0 1 2635#define HEAP0 1
1173#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1174#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1175 2638
… …
1247 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1248} 2711}
1249 2712
1250/*****************************************************************************/ 2713/*****************************************************************************/
1251 2714
1252/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1253typedef struct 2716typedef struct
1254{ 2717{
1255 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
1257 EV_P; 2720 EV_P;
… …
1263 2726
1264/*****************************************************************************/ 2727/*****************************************************************************/
1265 2728
1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1267 2730
1268static void noinline 2731ecb_noinline ecb_cold
2732static void
1269evpipe_init (EV_P) 2733evpipe_init (EV_P)
1270{ 2734{
1271 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
1272 { 2736 {
2737 int fds [2];
2738
1273# if EV_USE_EVENTFD 2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL) 2742 if (fds [1] < 0 && errno == EINVAL)
1276 evfd = eventfd (0, 0); 2743 fds [1] = eventfd (0, 0);
1277 2744
1278 if (evfd >= 0) 2745 if (fds [1] < 0)
2746# endif
1279 { 2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
1280 evpipe [0] = -1; 2754 evpipe [0] = fds [0];
1281 fd_intern (evfd); /* doing it twice doesn't hurt */ 2755
1282 ev_io_set (&pipe_w, evfd, EV_READ); 2756 if (evpipe [1] < 0)
2757 evpipe [1] = fds [1]; /* first call, set write fd */
2758 else
2759 {
2760 /* on subsequent calls, do not change evpipe [1] */
2761 /* so that evpipe_write can always rely on its value. */
2762 /* this branch does not do anything sensible on windows, */
2763 /* so must not be executed on windows */
2764
2765 dup2 (fds [1], evpipe [1]);
2766 close (fds [1]);
2767 }
2768
2769 fd_intern (evpipe [1]);
2770
2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2772 ev_io_start (EV_A_ &pipe_w);
2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2774 }
2775}
2776
2777inline_speed void
2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2779{
2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2781
2782 if (ecb_expect_true (*flag))
2783 return;
2784
2785 *flag = 1;
2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2787
2788 pipe_write_skipped = 1;
2789
2790 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2791
2792 if (pipe_write_wanted)
2793 {
2794 int old_errno;
2795
2796 pipe_write_skipped = 0;
2797 ECB_MEMORY_FENCE_RELEASE;
2798
2799 old_errno = errno; /* save errno because write will clobber it */
2800
2801#if EV_USE_EVENTFD
2802 if (evpipe [0] < 0)
2803 {
2804 uint64_t counter = 1;
2805 write (evpipe [1], &counter, sizeof (uint64_t));
1283 } 2806 }
1284 else 2807 else
1285# endif 2808#endif
1286 { 2809 {
1287 while (pipe (evpipe)) 2810#ifdef _WIN32
1288 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1289 2812 DWORD sent;
1290 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1291 fd_intern (evpipe [1]); 2814 buf.len = 1;
1292 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2816#else
2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1293 } 2819 }
1294
1295 ev_io_start (EV_A_ &pipe_w);
1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1297 }
1298}
1299
1300inline_size void
1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1302{
1303 if (!*flag)
1304 {
1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1307
1308 *flag = 1;
1309
1310#if EV_USE_EVENTFD
1311 if (evfd >= 0)
1312 {
1313 uint64_t counter = 1;
1314 write (evfd, &counter, sizeof (uint64_t));
1315 }
1316 else
1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1323 write (evpipe [1], &dummy, 1);
1324 2820
1325 errno = old_errno; 2821 errno = old_errno;
1326 } 2822 }
1327} 2823}
1328 2824
… …
1331static void 2827static void
1332pipecb (EV_P_ ev_io *iow, int revents) 2828pipecb (EV_P_ ev_io *iow, int revents)
1333{ 2829{
1334 int i; 2830 int i;
1335 2831
2832 if (revents & EV_READ)
2833 {
1336#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1337 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1338 { 2836 {
1339 uint64_t counter; 2837 uint64_t counter;
1340 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1341 } 2839 }
1342 else 2840 else
1343#endif 2841#endif
1344 { 2842 {
1345 char dummy; 2843 char dummy[4];
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2844#ifdef _WIN32
2845 WSABUF buf;
2846 DWORD recvd;
2847 DWORD flags = 0;
2848 buf.buf = dummy;
2849 buf.len = sizeof (dummy);
2850 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2851#else
1347 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
2854 }
1348 } 2855 }
1349 2856
2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2860
2861#if EV_SIGNAL_ENABLE
1350 if (sig_pending) 2862 if (sig_pending)
1351 { 2863 {
1352 sig_pending = 0; 2864 sig_pending = 0;
1353 2865
2866 ECB_MEMORY_FENCE;
2867
1354 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
1355 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
1356 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1357 } 2871 }
2872#endif
1358 2873
1359#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1360 if (async_pending) 2875 if (async_pending)
1361 { 2876 {
1362 async_pending = 0; 2877 async_pending = 0;
2878
2879 ECB_MEMORY_FENCE;
1363 2880
1364 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1365 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1366 { 2883 {
1367 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1368 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1369 } 2887 }
1370 } 2888 }
1371#endif 2889#endif
1372} 2890}
1373 2891
1374/*****************************************************************************/ 2892/*****************************************************************************/
1375 2893
2894void
2895ev_feed_signal (int signum) EV_NOEXCEPT
2896{
2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
2900 EV_A = signals [signum - 1].loop;
2901
2902 if (!EV_A)
2903 return;
2904#endif
2905
2906 signals [signum - 1].pending = 1;
2907 evpipe_write (EV_A_ &sig_pending);
2908}
2909
1376static void 2910static void
1377ev_sighandler (int signum) 2911ev_sighandler (int signum)
1378{ 2912{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
1382
1383#ifdef _WIN32 2913#ifdef _WIN32
1384 signal (signum, ev_sighandler); 2914 signal (signum, ev_sighandler);
1385#endif 2915#endif
1386 2916
1387 signals [signum - 1].pending = 1; 2917 ev_feed_signal (signum);
1388 evpipe_write (EV_A_ &sig_pending);
1389} 2918}
1390 2919
1391void noinline 2920ecb_noinline
2921void
1392ev_feed_signal_event (EV_P_ int signum) 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1393{ 2923{
1394 WL w; 2924 WL w;
1395 2925
1396 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1397 return; 2927 return;
1398 2928
1399 --signum; 2929 --signum;
1400 2930
1401#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1402 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
1403 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1404 2934
1405 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1406 return; 2936 return;
1407#endif 2937#endif
1408 2938
1409 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1410 2941
1411 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1413} 2944}
1414 2945
… …
1493 3024
1494#endif 3025#endif
1495 3026
1496/*****************************************************************************/ 3027/*****************************************************************************/
1497 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
1498#if EV_USE_IOCP 3080#if EV_USE_IOCP
1499# include "ev_iocp.c" 3081# include "ev_iocp.c"
1500#endif 3082#endif
1501#if EV_USE_PORT 3083#if EV_USE_PORT
1502# include "ev_port.c" 3084# include "ev_port.c"
… …
1505# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
1506#endif 3088#endif
1507#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
1508# include "ev_epoll.c" 3090# include "ev_epoll.c"
1509#endif 3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
3097#endif
1510#if EV_USE_POLL 3098#if EV_USE_POLL
1511# include "ev_poll.c" 3099# include "ev_poll.c"
1512#endif 3100#endif
1513#if EV_USE_SELECT 3101#if EV_USE_SELECT
1514# include "ev_select.c" 3102# include "ev_select.c"
1515#endif 3103#endif
1516 3104
1517int 3105ecb_cold int
1518ev_version_major (void) 3106ev_version_major (void) EV_NOEXCEPT
1519{ 3107{
1520 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
1521} 3109}
1522 3110
1523int 3111ecb_cold int
1524ev_version_minor (void) 3112ev_version_minor (void) EV_NOEXCEPT
1525{ 3113{
1526 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
1527} 3115}
1528 3116
1529/* return true if we are running with elevated privileges and should ignore env variables */ 3117/* return true if we are running with elevated privileges and should ignore env variables */
1530int inline_size 3118inline_size ecb_cold int
1531enable_secure (void) 3119enable_secure (void)
1532{ 3120{
1533#ifdef _WIN32 3121#ifdef _WIN32
1534 return 0; 3122 return 0;
1535#else 3123#else
1536 return getuid () != geteuid () 3124 return getuid () != geteuid ()
1537 || getgid () != getegid (); 3125 || getgid () != getegid ();
1538#endif 3126#endif
1539} 3127}
1540 3128
3129ecb_cold
1541unsigned int 3130unsigned int
1542ev_supported_backends (void) 3131ev_supported_backends (void) EV_NOEXCEPT
1543{ 3132{
1544 unsigned int flags = 0; 3133 unsigned int flags = 0;
1545 3134
1546 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1547 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1548 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1549 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1550 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1551 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
1552 return flags; 3143 return flags;
1553} 3144}
1554 3145
3146ecb_cold
1555unsigned int 3147unsigned int
1556ev_recommended_backends (void) 3148ev_recommended_backends (void) EV_NOEXCEPT
1557{ 3149{
1558 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
1559 3151
1560#ifndef __NetBSD__ 3152#ifndef __NetBSD__
1561 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
1569#endif 3161#endif
1570#ifdef __FreeBSD__ 3162#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3163 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1572#endif 3164#endif
1573 3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: linuxaio is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
3174
1574 return flags; 3175 return flags;
1575} 3176}
1576 3177
3178ecb_cold
1577unsigned int 3179unsigned int
1578ev_embeddable_backends (void) 3180ev_embeddable_backends (void) EV_NOEXCEPT
1579{ 3181{
1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1581 3183
1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1584 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
1585 3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3189
1586 return flags; 3190 return flags;
1587} 3191}
1588 3192
1589unsigned int 3193unsigned int
1590ev_backend (EV_P) 3194ev_backend (EV_P) EV_NOEXCEPT
1591{ 3195{
1592 return backend; 3196 return backend;
1593} 3197}
1594 3198
1595#if EV_FEATURE_API 3199#if EV_FEATURE_API
1596unsigned int 3200unsigned int
1597ev_iteration (EV_P) 3201ev_iteration (EV_P) EV_NOEXCEPT
1598{ 3202{
1599 return loop_count; 3203 return loop_count;
1600} 3204}
1601 3205
1602unsigned int 3206unsigned int
1603ev_depth (EV_P) 3207ev_depth (EV_P) EV_NOEXCEPT
1604{ 3208{
1605 return loop_depth; 3209 return loop_depth;
1606} 3210}
1607 3211
1608void 3212void
1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1610{ 3214{
1611 io_blocktime = interval; 3215 io_blocktime = interval;
1612} 3216}
1613 3217
1614void 3218void
1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1616{ 3220{
1617 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
1618} 3222}
1619 3223
1620void 3224void
1621ev_set_userdata (EV_P_ void *data) 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1622{ 3226{
1623 userdata = data; 3227 userdata = data;
1624} 3228}
1625 3229
1626void * 3230void *
1627ev_userdata (EV_P) 3231ev_userdata (EV_P) EV_NOEXCEPT
1628{ 3232{
1629 return userdata; 3233 return userdata;
1630} 3234}
1631 3235
3236void
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3237ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1633{ 3238{
1634 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
1635} 3240}
1636 3241
3242void
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3243ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1638{ 3244{
1639 release_cb = release; 3245 release_cb = release;
1640 acquire_cb = acquire; 3246 acquire_cb = acquire;
1641} 3247}
1642#endif 3248#endif
1643 3249
1644/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
1645static void noinline 3251ecb_noinline ecb_cold
3252static void
1646loop_init (EV_P_ unsigned int flags) 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1647{ 3254{
1648 if (!backend) 3255 if (!backend)
1649 { 3256 {
3257 origflags = flags;
3258
1650#if EV_USE_REALTIME 3259#if EV_USE_REALTIME
1651 if (!have_realtime) 3260 if (!have_realtime)
1652 { 3261 {
1653 struct timespec ts; 3262 struct timespec ts;
1654 3263
… …
1676 if (!(flags & EVFLAG_NOENV) 3285 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure () 3286 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS")) 3287 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS")); 3288 flags = atoi (getenv ("LIBEV_FLAGS"));
1680 3289
1681 ev_rt_now = ev_time (); 3290 ev_rt_now = ev_time ();
1682 mn_now = get_clock (); 3291 mn_now = get_clock ();
1683 now_floor = mn_now; 3292 now_floor = mn_now;
1684 rtmn_diff = ev_rt_now - mn_now; 3293 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API 3294#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending; 3295 invoke_cb = ev_invoke_pending;
1687#endif 3296#endif
1688 3297
1689 io_blocktime = 0.; 3298 io_blocktime = 0.;
1690 timeout_blocktime = 0.; 3299 timeout_blocktime = 0.;
1691 backend = 0; 3300 backend = 0;
1692 backend_fd = -1; 3301 backend_fd = -1;
1693 sig_pending = 0; 3302 sig_pending = 0;
1694#if EV_ASYNC_ENABLE 3303#if EV_ASYNC_ENABLE
1695 async_pending = 0; 3304 async_pending = 0;
1696#endif 3305#endif
3306 pipe_write_skipped = 0;
3307 pipe_write_wanted = 0;
3308 evpipe [0] = -1;
3309 evpipe [1] = -1;
1697#if EV_USE_INOTIFY 3310#if EV_USE_INOTIFY
1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1699#endif 3312#endif
1700#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1702#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
1703 3319
1704 if (!(flags & 0x0000ffffU)) 3320 if (!(flags & EVBACKEND_MASK))
1705 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
1706 3322
1707#if EV_USE_IOCP 3323#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif 3325#endif
1710#if EV_USE_PORT 3326#if EV_USE_PORT
1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1712#endif 3328#endif
1713#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3334#endif
3335#if EV_USE_LINUXAIO
3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1715#endif 3337#endif
1716#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
1717 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1718#endif 3340#endif
1719#if EV_USE_POLL 3341#if EV_USE_POLL
1720 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1721#endif 3343#endif
1722#if EV_USE_SELECT 3344#if EV_USE_SELECT
1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1724#endif 3346#endif
1725 3347
1726 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
1727 3349
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1731#endif 3353#endif
1732 } 3354 }
1733} 3355}
1734 3356
1735/* free up a loop structure */ 3357/* free up a loop structure */
3358ecb_cold
1736void 3359void
1737ev_loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
1738{ 3361{
1739 int i; 3362 int i;
1740 3363
… …
1744 return; 3367 return;
1745#endif 3368#endif
1746 3369
1747#if EV_CLEANUP_ENABLE 3370#if EV_CLEANUP_ENABLE
1748 /* queue cleanup watchers (and execute them) */ 3371 /* queue cleanup watchers (and execute them) */
1749 if (expect_false (cleanupcnt)) 3372 if (ecb_expect_false (cleanupcnt))
1750 { 3373 {
1751 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1752 EV_INVOKE_PENDING; 3375 EV_INVOKE_PENDING;
1753 } 3376 }
1754#endif 3377#endif
1755 3378
1756#if EV_CHILD_ENABLE 3379#if EV_CHILD_ENABLE
1757 if (ev_is_active (&childev)) 3380 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1758 { 3381 {
1759 ev_ref (EV_A); /* child watcher */ 3382 ev_ref (EV_A); /* child watcher */
1760 ev_signal_stop (EV_A_ &childev); 3383 ev_signal_stop (EV_A_ &childev);
1761 } 3384 }
1762#endif 3385#endif
… …
1764 if (ev_is_active (&pipe_w)) 3387 if (ev_is_active (&pipe_w))
1765 { 3388 {
1766 /*ev_ref (EV_A);*/ 3389 /*ev_ref (EV_A);*/
1767 /*ev_io_stop (EV_A_ &pipe_w);*/ 3390 /*ev_io_stop (EV_A_ &pipe_w);*/
1768 3391
1769#if EV_USE_EVENTFD
1770 if (evfd >= 0)
1771 close (evfd);
1772#endif
1773
1774 if (evpipe [0] >= 0)
1775 {
1776 EV_WIN32_CLOSE_FD (evpipe [0]); 3392 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1777 EV_WIN32_CLOSE_FD (evpipe [1]); 3393 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1778 }
1779 } 3394 }
1780 3395
1781#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
1782 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
1783 close (sigfd); 3398 close (sigfd);
1784#endif 3399#endif
1785 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
1786#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
1787 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
1788 close (fs_fd); 3408 close (fs_fd);
1789#endif 3409#endif
1790 3410
1791 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
1792 close (backend_fd); 3412 close (backend_fd);
1793 3413
1794#if EV_USE_IOCP 3414#if EV_USE_IOCP
1795 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1796#endif 3416#endif
1797#if EV_USE_PORT 3417#if EV_USE_PORT
1798 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1799#endif 3419#endif
1800#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
1801 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3425#endif
3426#if EV_USE_LINUXAIO
3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1802#endif 3428#endif
1803#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
1804 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1805#endif 3431#endif
1806#if EV_USE_POLL 3432#if EV_USE_POLL
1807 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1808#endif 3434#endif
1809#if EV_USE_SELECT 3435#if EV_USE_SELECT
1810 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1811#endif 3437#endif
1812 3438
1813 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
1814 { 3440 {
1815 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
1857 3483
1858inline_size void 3484inline_size void
1859loop_fork (EV_P) 3485loop_fork (EV_P)
1860{ 3486{
1861#if EV_USE_PORT 3487#if EV_USE_PORT
1862 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1863#endif 3489#endif
1864#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
1865 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3496#if EV_USE_LINUXAIO
3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1866#endif 3498#endif
1867#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
1868 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1869#endif 3501#endif
1870#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
1871 infy_fork (EV_A); 3503 infy_fork (EV_A);
1872#endif 3504#endif
1873 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1874 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
1875 { 3529 {
1876 /* this "locks" the handlers against writing to the pipe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1877 /* while we modify the fd vars */ 3531
1878 sig_pending = 1;
1879#if EV_ASYNC_ENABLE
1880 async_pending = 1;
1881#endif
1882
1883 ev_ref (EV_A); 3532 ev_ref (EV_A);
1884 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
1885 3534
1886#if EV_USE_EVENTFD
1887 if (evfd >= 0)
1888 close (evfd);
1889#endif
1890
1891 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
1892 {
1893 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
1894 EV_WIN32_CLOSE_FD (evpipe [1]); 3537
3538 evpipe_init (EV_A);
3539 /* iterate over everything, in case we missed something before */
3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1895 } 3541 }
1896 3542 #endif
1897#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1898 evpipe_init (EV_A);
1899 /* now iterate over everything, in case we missed something */
1900 pipecb (EV_A_ &pipe_w, EV_READ);
1901#endif
1902 } 3543 }
1903 3544
1904 postfork = 0; 3545 postfork = 0;
1905} 3546}
1906 3547
1907#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
1908 3549
3550ecb_cold
1909struct ev_loop * 3551struct ev_loop *
1910ev_loop_new (unsigned int flags) 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
1911{ 3553{
1912 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1913 3555
1914 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
1915 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
… …
1922} 3564}
1923 3565
1924#endif /* multiplicity */ 3566#endif /* multiplicity */
1925 3567
1926#if EV_VERIFY 3568#if EV_VERIFY
1927static void noinline 3569ecb_noinline ecb_cold
3570static void
1928verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
1929{ 3572{
1930 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1931 3574
1932 if (w->pending) 3575 if (w->pending)
1933 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1934} 3577}
1935 3578
1936static void noinline 3579ecb_noinline ecb_cold
3580static void
1937verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
1938{ 3582{
1939 int i; 3583 int i;
1940 3584
1941 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1946 3590
1947 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1948 } 3592 }
1949} 3593}
1950 3594
1951static void noinline 3595ecb_noinline ecb_cold
3596static void
1952array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
1953{ 3598{
1954 while (cnt--) 3599 while (cnt--)
1955 { 3600 {
1956 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1958 } 3603 }
1959} 3604}
1960#endif 3605#endif
1961 3606
1962#if EV_FEATURE_API 3607#if EV_FEATURE_API
1963void 3608void ecb_cold
1964ev_verify (EV_P) 3609ev_verify (EV_P) EV_NOEXCEPT
1965{ 3610{
1966#if EV_VERIFY 3611#if EV_VERIFY
1967 int i; 3612 int i;
1968 WL w; 3613 WL w, w2;
1969 3614
1970 assert (activecnt >= -1); 3615 assert (activecnt >= -1);
1971 3616
1972 assert (fdchangemax >= fdchangecnt); 3617 assert (fdchangemax >= fdchangecnt);
1973 for (i = 0; i < fdchangecnt; ++i) 3618 for (i = 0; i < fdchangecnt; ++i)
1974 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3619 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1975 3620
1976 assert (anfdmax >= 0); 3621 assert (anfdmax >= 0);
1977 for (i = 0; i < anfdmax; ++i) 3622 for (i = 0; i < anfdmax; ++i)
3623 {
3624 int j = 0;
3625
1978 for (w = anfds [i].head; w; w = w->next) 3626 for (w = w2 = anfds [i].head; w; w = w->next)
1979 { 3627 {
1980 verify_watcher (EV_A_ (W)w); 3628 verify_watcher (EV_A_ (W)w);
3629
3630 if (j++ & 1)
3631 {
3632 assert (("libev: io watcher list contains a loop", w != w2));
3633 w2 = w2->next;
3634 }
3635
1981 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3636 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1982 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3637 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1983 } 3638 }
3639 }
1984 3640
1985 assert (timermax >= timercnt); 3641 assert (timermax >= timercnt);
1986 verify_heap (EV_A_ timers, timercnt); 3642 verify_heap (EV_A_ timers, timercnt);
1987 3643
1988#if EV_PERIODIC_ENABLE 3644#if EV_PERIODIC_ENABLE
… …
2034#endif 3690#endif
2035} 3691}
2036#endif 3692#endif
2037 3693
2038#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
2039struct ev_loop * 3696struct ev_loop *
2040#else 3697#else
2041int 3698int
2042#endif 3699#endif
2043ev_default_loop (unsigned int flags) 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
2044{ 3701{
2045 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
2046 { 3703 {
2047#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
2048 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2067 3724
2068 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
2069} 3726}
2070 3727
2071void 3728void
2072ev_loop_fork (EV_P) 3729ev_loop_fork (EV_P) EV_NOEXCEPT
2073{ 3730{
2074 postfork = 1; /* must be in line with ev_default_fork */ 3731 postfork = 1;
2075} 3732}
2076 3733
2077/*****************************************************************************/ 3734/*****************************************************************************/
2078 3735
2079void 3736void
… …
2081{ 3738{
2082 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
2083} 3740}
2084 3741
2085unsigned int 3742unsigned int
2086ev_pending_count (EV_P) 3743ev_pending_count (EV_P) EV_NOEXCEPT
2087{ 3744{
2088 int pri; 3745 int pri;
2089 unsigned int count = 0; 3746 unsigned int count = 0;
2090 3747
2091 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
2092 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
2093 3750
2094 return count; 3751 return count;
2095} 3752}
2096 3753
2097void noinline 3754ecb_noinline
3755void
2098ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
2099{ 3757{
2100 int pri; 3758 pendingpri = NUMPRI;
2101 3759
2102 for (pri = NUMPRI; pri--; ) 3760 do
3761 {
3762 --pendingpri;
3763
3764 /* pendingpri possibly gets modified in the inner loop */
2103 while (pendingcnt [pri]) 3765 while (pendingcnt [pendingpri])
2104 { 3766 {
2105 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2106 3768
2107 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2108 /* ^ this is no longer true, as pending_w could be here */
2109
2110 p->w->pending = 0; 3769 p->w->pending = 0;
2111 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
2112 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
2113 } 3772 }
3773 }
3774 while (pendingpri);
2114} 3775}
2115 3776
2116#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
2117/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
2118/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
2119inline_size void 3780inline_size void
2120idle_reify (EV_P) 3781idle_reify (EV_P)
2121{ 3782{
2122 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
2123 { 3784 {
2124 int pri; 3785 int pri;
2125 3786
2126 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
2127 { 3788 {
… …
2157 { 3818 {
2158 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
2159 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
2160 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
2161 3822
2162 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2163 3824
2164 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
2165 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
2166 } 3827 }
2167 else 3828 else
… …
2175 feed_reverse_done (EV_A_ EV_TIMER); 3836 feed_reverse_done (EV_A_ EV_TIMER);
2176 } 3837 }
2177} 3838}
2178 3839
2179#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3841
3842ecb_noinline
3843static void
3844periodic_recalc (EV_P_ ev_periodic *w)
3845{
3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3848
3849 /* the above almost always errs on the low side */
3850 while (at <= ev_rt_now)
3851 {
3852 ev_tstamp nat = at + w->interval;
3853
3854 /* when resolution fails us, we use ev_rt_now */
3855 if (ecb_expect_false (nat == at))
3856 {
3857 at = ev_rt_now;
3858 break;
3859 }
3860
3861 at = nat;
3862 }
3863
3864 ev_at (w) = at;
3865}
3866
2180/* make periodics pending */ 3867/* make periodics pending */
2181inline_size void 3868inline_size void
2182periodics_reify (EV_P) 3869periodics_reify (EV_P)
2183{ 3870{
2184 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2185 3872
2186 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2187 { 3874 {
2188 int feed_count = 0;
2189
2190 do 3875 do
2191 { 3876 {
2192 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2193 3878
2194 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2203 ANHE_at_cache (periodics [HEAP0]); 3888 ANHE_at_cache (periodics [HEAP0]);
2204 downheap (periodics, periodiccnt, HEAP0); 3889 downheap (periodics, periodiccnt, HEAP0);
2205 } 3890 }
2206 else if (w->interval) 3891 else if (w->interval)
2207 { 3892 {
2208 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3893 periodic_recalc (EV_A_ w);
2209 /* if next trigger time is not sufficiently in the future, put it there */
2210 /* this might happen because of floating point inexactness */
2211 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2212 {
2213 ev_at (w) += w->interval;
2214
2215 /* if interval is unreasonably low we might still have a time in the past */
2216 /* so correct this. this will make the periodic very inexact, but the user */
2217 /* has effectively asked to get triggered more often than possible */
2218 if (ev_at (w) < ev_rt_now)
2219 ev_at (w) = ev_rt_now;
2220 }
2221
2222 ANHE_at_cache (periodics [HEAP0]); 3894 ANHE_at_cache (periodics [HEAP0]);
2223 downheap (periodics, periodiccnt, HEAP0); 3895 downheap (periodics, periodiccnt, HEAP0);
2224 } 3896 }
2225 else 3897 else
2226 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2234 } 3906 }
2235} 3907}
2236 3908
2237/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
2238/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
2239static void noinline 3911ecb_noinline ecb_cold
3912static void
2240periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
2241{ 3914{
2242 int i; 3915 int i;
2243 3916
2244 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
2247 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2248 3921
2249 if (w->reschedule_cb) 3922 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3923 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval) 3924 else if (w->interval)
2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3925 periodic_recalc (EV_A_ w);
2253 3926
2254 ANHE_at_cache (periodics [i]); 3927 ANHE_at_cache (periodics [i]);
2255 } 3928 }
2256 3929
2257 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
2258} 3931}
2259#endif 3932#endif
2260 3933
2261/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
2262static void noinline 3935ecb_noinline ecb_cold
3936static void
2263timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
2264{ 3938{
2265 int i; 3939 int i;
2266 3940
2267 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
2276/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
2277inline_speed void 3951inline_speed void
2278time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
2279{ 3953{
2280#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
2281 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
2282 { 3956 {
2283 int i; 3957 int i;
2284 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
2285 3959
2286 mn_now = get_clock (); 3960 mn_now = get_clock ();
2287 3961
2288 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2289 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
2290 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2291 { 3965 {
2292 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
2293 return; 3967 return;
2294 } 3968 }
2295 3969
… …
2304 * doesn't hurt either as we only do this on time-jumps or 3978 * doesn't hurt either as we only do this on time-jumps or
2305 * in the unlikely event of having been preempted here. 3979 * in the unlikely event of having been preempted here.
2306 */ 3980 */
2307 for (i = 4; --i; ) 3981 for (i = 4; --i; )
2308 { 3982 {
3983 ev_tstamp diff;
2309 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
2310 3985
2311 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3986 diff = odiff - rtmn_diff;
3987
3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2312 return; /* all is well */ 3989 return; /* all is well */
2313 3990
2314 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
2315 mn_now = get_clock (); 3992 mn_now = get_clock ();
2316 now_floor = mn_now; 3993 now_floor = mn_now;
… …
2325 else 4002 else
2326#endif 4003#endif
2327 { 4004 {
2328 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
2329 4006
2330 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2331 { 4008 {
2332 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
2333 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2334#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
2335 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
2338 4015
2339 mn_now = ev_rt_now; 4016 mn_now = ev_rt_now;
2340 } 4017 }
2341} 4018}
2342 4019
2343void 4020int
2344ev_run (EV_P_ int flags) 4021ev_run (EV_P_ int flags)
2345{ 4022{
2346#if EV_FEATURE_API 4023#if EV_FEATURE_API
2347 ++loop_depth; 4024 ++loop_depth;
2348#endif 4025#endif
… …
2358#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
2359 ev_verify (EV_A); 4036 ev_verify (EV_A);
2360#endif 4037#endif
2361 4038
2362#ifndef _WIN32 4039#ifndef _WIN32
2363 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2364 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
2365 { 4042 {
2366 curpid = getpid (); 4043 curpid = getpid ();
2367 postfork = 1; 4044 postfork = 1;
2368 } 4045 }
2369#endif 4046#endif
2370 4047
2371#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
2372 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
2373 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
2374 if (forkcnt) 4051 if (forkcnt)
2375 { 4052 {
2376 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2377 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
2378 } 4055 }
2379#endif 4056#endif
2380 4057
2381#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
2382 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
2383 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
2384 { 4061 {
2385 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2386 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
2387 } 4064 }
2388#endif 4065#endif
2389 4066
2390 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
2391 break; 4068 break;
2392 4069
2393 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
2394 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
2395 loop_fork (EV_A); 4072 loop_fork (EV_A);
2396 4073
2397 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
2398 fd_reify (EV_A); 4075 fd_reify (EV_A);
2399 4076
… …
2404 4081
2405 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
2406 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
2407 4084
2408 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
2409 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2410 4087
4088 /* from now on, we want a pipe-wake-up */
4089 pipe_write_wanted = 1;
4090
4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
4092
2411 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2412 { 4094 {
2413 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097#if EV_USE_TIMERFD
4098 /* sleep a lot longer when we can reliably detect timejumps */
4099 if (ecb_expect_true (timerfd >= 0))
4100 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4101#endif
4102#if !EV_PERIODIC_ENABLE
4103 /* without periodics but with monotonic clock there is no need */
4104 /* for any time jump detection, so sleep longer */
4105 if (ecb_expect_true (have_monotonic))
4106 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4107#endif
2414 4108
2415 if (timercnt) 4109 if (timercnt)
2416 { 4110 {
2417 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2418 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
2419 } 4113 }
2420 4114
2421#if EV_PERIODIC_ENABLE 4115#if EV_PERIODIC_ENABLE
2422 if (periodiccnt) 4116 if (periodiccnt)
2423 { 4117 {
2424 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 4118 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2425 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
2426 } 4120 }
2427#endif 4121#endif
2428 4122
2429 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
2430 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
2431 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
2432 4126
4127 /* now there are two more special cases left, either we have
4128 * already-expired timers, so we should not sleep, or we have timers
4129 * that expire very soon, in which case we need to wait for a minimum
4130 * amount of time for some event loop backends.
4131 */
4132 if (ecb_expect_false (waittime < backend_mintime))
4133 waittime = waittime <= EV_TS_CONST (0.)
4134 ? EV_TS_CONST (0.)
4135 : backend_mintime;
4136
2433 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
2434 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
2435 { 4139 {
2436 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2437 4141
2438 if (sleeptime > waittime - backend_fudge) 4142 if (sleeptime > waittime - backend_mintime)
2439 sleeptime = waittime - backend_fudge; 4143 sleeptime = waittime - backend_mintime;
2440 4144
2441 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2442 { 4146 {
2443 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
2444 waittime -= sleeptime; 4148 waittime -= sleeptime;
2445 } 4149 }
2446 } 4150 }
… …
2451#endif 4155#endif
2452 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 4156 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2453 backend_poll (EV_A_ waittime); 4157 backend_poll (EV_A_ waittime);
2454 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4158 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2455 4159
4160 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4161
4162 ECB_MEMORY_FENCE_ACQUIRE;
4163 if (pipe_write_skipped)
4164 {
4165 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4167 }
4168
2456 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
2457 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
2458 } 4171 }
2459 4172
2460 /* queue pending timers and reschedule them */ 4173 /* queue pending timers and reschedule them */
… …
2468 idle_reify (EV_A); 4181 idle_reify (EV_A);
2469#endif 4182#endif
2470 4183
2471#if EV_CHECK_ENABLE 4184#if EV_CHECK_ENABLE
2472 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
2473 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
2474 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2475#endif 4188#endif
2476 4189
2477 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
2478 } 4191 }
2479 while (expect_true ( 4192 while (ecb_expect_true (
2480 activecnt 4193 activecnt
2481 && !loop_done 4194 && !loop_done
2482 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2483 )); 4196 ));
2484 4197
… …
2486 loop_done = EVBREAK_CANCEL; 4199 loop_done = EVBREAK_CANCEL;
2487 4200
2488#if EV_FEATURE_API 4201#if EV_FEATURE_API
2489 --loop_depth; 4202 --loop_depth;
2490#endif 4203#endif
4204
4205 return activecnt;
2491} 4206}
2492 4207
2493void 4208void
2494ev_break (EV_P_ int how) 4209ev_break (EV_P_ int how) EV_NOEXCEPT
2495{ 4210{
2496 loop_done = how; 4211 loop_done = how;
2497} 4212}
2498 4213
2499void 4214void
2500ev_ref (EV_P) 4215ev_ref (EV_P) EV_NOEXCEPT
2501{ 4216{
2502 ++activecnt; 4217 ++activecnt;
2503} 4218}
2504 4219
2505void 4220void
2506ev_unref (EV_P) 4221ev_unref (EV_P) EV_NOEXCEPT
2507{ 4222{
2508 --activecnt; 4223 --activecnt;
2509} 4224}
2510 4225
2511void 4226void
2512ev_now_update (EV_P) 4227ev_now_update (EV_P) EV_NOEXCEPT
2513{ 4228{
2514 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
2515} 4230}
2516 4231
2517void 4232void
2518ev_suspend (EV_P) 4233ev_suspend (EV_P) EV_NOEXCEPT
2519{ 4234{
2520 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
2521} 4236}
2522 4237
2523void 4238void
2524ev_resume (EV_P) 4239ev_resume (EV_P) EV_NOEXCEPT
2525{ 4240{
2526 ev_tstamp mn_prev = mn_now; 4241 ev_tstamp mn_prev = mn_now;
2527 4242
2528 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
2529 timers_reschedule (EV_A_ mn_now - mn_prev); 4244 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2546inline_size void 4261inline_size void
2547wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
2548{ 4263{
2549 while (*head) 4264 while (*head)
2550 { 4265 {
2551 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
2552 { 4267 {
2553 *head = elem->next; 4268 *head = elem->next;
2554 break; 4269 break;
2555 } 4270 }
2556 4271
… …
2568 w->pending = 0; 4283 w->pending = 0;
2569 } 4284 }
2570} 4285}
2571 4286
2572int 4287int
2573ev_clear_pending (EV_P_ void *w) 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2574{ 4289{
2575 W w_ = (W)w; 4290 W w_ = (W)w;
2576 int pending = w_->pending; 4291 int pending = w_->pending;
2577 4292
2578 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
2579 { 4294 {
2580 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2581 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
2582 w_->pending = 0; 4297 w_->pending = 0;
2583 return p->events; 4298 return p->events;
… …
2610 w->active = 0; 4325 w->active = 0;
2611} 4326}
2612 4327
2613/*****************************************************************************/ 4328/*****************************************************************************/
2614 4329
2615void noinline 4330ecb_noinline
4331void
2616ev_io_start (EV_P_ ev_io *w) 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2617{ 4333{
2618 int fd = w->fd; 4334 int fd = w->fd;
2619 4335
2620 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
2621 return; 4337 return;
2622 4338
2623 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2624 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4340 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2625 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
2626 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
2627 4346
2628 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
2629 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2630 wlist_add (&anfds[fd].head, (WL)w); 4349 wlist_add (&anfds[fd].head, (WL)w);
4350
4351 /* common bug, apparently */
4352 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2631 4353
2632 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4354 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2633 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
2634 4356
2635 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
2636} 4358}
2637 4359
2638void noinline 4360ecb_noinline
4361void
2639ev_io_stop (EV_P_ ev_io *w) 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2640{ 4363{
2641 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
2642 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
2643 return; 4366 return;
2644 4367
2645 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4368 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2646 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
2647 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
2648 4374
2649 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
2650 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
2651 4377
2652 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2653 4379
2654 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
2655} 4381}
2656 4382
2657void noinline 4383ecb_noinline
4384void
2658ev_timer_start (EV_P_ ev_timer *w) 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2659{ 4386{
2660 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
2661 return; 4388 return;
2662 4389
2663 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
2664 4391
2665 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4392 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2666 4393
2667 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
2668 4395
2669 ++timercnt; 4396 ++timercnt;
2670 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2671 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2672 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
2673 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
2674 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
2675 4402
2676 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
2677 4404
2678 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4405 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2679} 4406}
2680 4407
2681void noinline 4408ecb_noinline
4409void
2682ev_timer_stop (EV_P_ ev_timer *w) 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2683{ 4411{
2684 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
2685 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
2686 return; 4414 return;
2687 4415
2688 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
2689 4417
2690 { 4418 {
… …
2692 4420
2693 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4421 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2694 4422
2695 --timercnt; 4423 --timercnt;
2696 4424
2697 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
2698 { 4426 {
2699 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
2700 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
2701 } 4429 }
2702 } 4430 }
… …
2706 ev_stop (EV_A_ (W)w); 4434 ev_stop (EV_A_ (W)w);
2707 4435
2708 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
2709} 4437}
2710 4438
2711void noinline 4439ecb_noinline
4440void
2712ev_timer_again (EV_P_ ev_timer *w) 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2713{ 4442{
2714 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
4444
4445 clear_pending (EV_A_ (W)w);
2715 4446
2716 if (ev_is_active (w)) 4447 if (ev_is_active (w))
2717 { 4448 {
2718 if (w->repeat) 4449 if (w->repeat)
2719 { 4450 {
… …
2732 4463
2733 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
2734} 4465}
2735 4466
2736ev_tstamp 4467ev_tstamp
2737ev_timer_remaining (EV_P_ ev_timer *w) 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2738{ 4469{
2739 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4470 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2740} 4471}
2741 4472
2742#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
2743void noinline 4474ecb_noinline
4475void
2744ev_periodic_start (EV_P_ ev_periodic *w) 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2745{ 4477{
2746 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
2747 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
2748 4485
2749 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
2750 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2751 else if (w->interval) 4488 else if (w->interval)
2752 { 4489 {
2753 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4490 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2754 /* this formula differs from the one in periodic_reify because we do not always round up */ 4491 periodic_recalc (EV_A_ w);
2755 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2756 } 4492 }
2757 else 4493 else
2758 ev_at (w) = w->offset; 4494 ev_at (w) = w->offset;
2759 4495
2760 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
2761 4497
2762 ++periodiccnt; 4498 ++periodiccnt;
2763 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2764 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2765 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2766 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
2767 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
2768 4504
2769 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
2770 4506
2771 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4507 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2772} 4508}
2773 4509
2774void noinline 4510ecb_noinline
4511void
2775ev_periodic_stop (EV_P_ ev_periodic *w) 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2776{ 4513{
2777 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
2778 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
2779 return; 4516 return;
2780 4517
2781 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
2782 4519
2783 { 4520 {
… …
2785 4522
2786 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4523 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2787 4524
2788 --periodiccnt; 4525 --periodiccnt;
2789 4526
2790 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
2791 { 4528 {
2792 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
2793 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
2794 } 4531 }
2795 } 4532 }
… …
2797 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
2798 4535
2799 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
2800} 4537}
2801 4538
2802void noinline 4539ecb_noinline
4540void
2803ev_periodic_again (EV_P_ ev_periodic *w) 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2804{ 4542{
2805 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
2806 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
2807 ev_periodic_start (EV_A_ w); 4545 ev_periodic_start (EV_A_ w);
2808} 4546}
… …
2812# define SA_RESTART 0 4550# define SA_RESTART 0
2813#endif 4551#endif
2814 4552
2815#if EV_SIGNAL_ENABLE 4553#if EV_SIGNAL_ENABLE
2816 4554
2817void noinline 4555ecb_noinline
4556void
2818ev_signal_start (EV_P_ ev_signal *w) 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2819{ 4558{
2820 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
2821 return; 4560 return;
2822 4561
2823 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2824 4563
2825#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
2826 assert (("libev: a signal must not be attached to two different loops", 4565 assert (("libev: a signal must not be attached to two different loops",
2827 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4566 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2828 4567
2829 signals [w->signum - 1].loop = EV_A; 4568 signals [w->signum - 1].loop = EV_A;
4569 ECB_MEMORY_FENCE_RELEASE;
2830#endif 4570#endif
2831 4571
2832 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
2833 4573
2834#if EV_USE_SIGNALFD 4574#if EV_USE_SIGNALFD
… …
2881 sa.sa_handler = ev_sighandler; 4621 sa.sa_handler = ev_sighandler;
2882 sigfillset (&sa.sa_mask); 4622 sigfillset (&sa.sa_mask);
2883 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4623 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2884 sigaction (w->signum, &sa, 0); 4624 sigaction (w->signum, &sa, 0);
2885 4625
4626 if (origflags & EVFLAG_NOSIGMASK)
4627 {
2886 sigemptyset (&sa.sa_mask); 4628 sigemptyset (&sa.sa_mask);
2887 sigaddset (&sa.sa_mask, w->signum); 4629 sigaddset (&sa.sa_mask, w->signum);
2888 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4630 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4631 }
2889#endif 4632#endif
2890 } 4633 }
2891 4634
2892 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
2893} 4636}
2894 4637
2895void noinline 4638ecb_noinline
4639void
2896ev_signal_stop (EV_P_ ev_signal *w) 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2897{ 4641{
2898 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
2899 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
2900 return; 4644 return;
2901 4645
2902 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
2903 4647
2904 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2932#endif 4676#endif
2933 4677
2934#if EV_CHILD_ENABLE 4678#if EV_CHILD_ENABLE
2935 4679
2936void 4680void
2937ev_child_start (EV_P_ ev_child *w) 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2938{ 4682{
2939#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
2940 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4684 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2941#endif 4685#endif
2942 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
2943 return; 4687 return;
2944 4688
2945 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
2946 4690
2947 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
… …
2949 4693
2950 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
2951} 4695}
2952 4696
2953void 4697void
2954ev_child_stop (EV_P_ ev_child *w) 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2955{ 4699{
2956 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
2957 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
2958 return; 4702 return;
2959 4703
2960 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
2961 4705
2962 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2976 4720
2977#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
2978#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2979#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
2980 4724
2981static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4725ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2982 4726
2983#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
2984 4728
2985/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4729/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2986# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2987 4731
2988static void noinline 4732ecb_noinline
4733static void
2989infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
2990{ 4735{
2991 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); 4736 w->wd = inotify_add_watch (fs_fd, w->path,
4737 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4738 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4739 | IN_DONT_FOLLOW | IN_MASK_ADD);
2992 4740
2993 if (w->wd >= 0) 4741 if (w->wd >= 0)
2994 { 4742 {
2995 struct statfs sfs; 4743 struct statfs sfs;
2996 4744
… …
3000 4748
3001 if (!fs_2625) 4749 if (!fs_2625)
3002 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4750 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3003 else if (!statfs (w->path, &sfs) 4751 else if (!statfs (w->path, &sfs)
3004 && (sfs.f_type == 0x1373 /* devfs */ 4752 && (sfs.f_type == 0x1373 /* devfs */
4753 || sfs.f_type == 0x4006 /* fat */
4754 || sfs.f_type == 0x4d44 /* msdos */
3005 || sfs.f_type == 0xEF53 /* ext2/3 */ 4755 || sfs.f_type == 0xEF53 /* ext2/3 */
4756 || sfs.f_type == 0x72b6 /* jffs2 */
4757 || sfs.f_type == 0x858458f6 /* ramfs */
4758 || sfs.f_type == 0x5346544e /* ntfs */
3006 || sfs.f_type == 0x3153464a /* jfs */ 4759 || sfs.f_type == 0x3153464a /* jfs */
4760 || sfs.f_type == 0x9123683e /* btrfs */
3007 || sfs.f_type == 0x52654973 /* reiser3 */ 4761 || sfs.f_type == 0x52654973 /* reiser3 */
3008 || sfs.f_type == 0x01021994 /* tempfs */ 4762 || sfs.f_type == 0x01021994 /* tmpfs */
3009 || sfs.f_type == 0x58465342 /* xfs */)) 4763 || sfs.f_type == 0x58465342 /* xfs */))
3010 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4764 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3011 else 4765 else
3012 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4766 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3013 } 4767 }
… …
3034 if (!pend || pend == path) 4788 if (!pend || pend == path)
3035 break; 4789 break;
3036 4790
3037 *pend = 0; 4791 *pend = 0;
3038 w->wd = inotify_add_watch (fs_fd, path, mask); 4792 w->wd = inotify_add_watch (fs_fd, path, mask);
3039 } 4793 }
3040 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4794 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3041 } 4795 }
3042 } 4796 }
3043 4797
3044 if (w->wd >= 0) 4798 if (w->wd >= 0)
… …
3048 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3049 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
3050 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3051} 4805}
3052 4806
3053static void noinline 4807ecb_noinline
4808static void
3054infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
3055{ 4810{
3056 int slot; 4811 int slot;
3057 int wd = w->wd; 4812 int wd = w->wd;
3058 4813
… …
3065 4820
3066 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
3067 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
3068} 4823}
3069 4824
3070static void noinline 4825ecb_noinline
4826static void
3071infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3072{ 4828{
3073 if (slot < 0) 4829 if (slot < 0)
3074 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
3075 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4831 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3111 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4867 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3112 ofs += sizeof (struct inotify_event) + ev->len; 4868 ofs += sizeof (struct inotify_event) + ev->len;
3113 } 4869 }
3114} 4870}
3115 4871
3116inline_size void 4872inline_size ecb_cold
4873void
3117ev_check_2625 (EV_P) 4874ev_check_2625 (EV_P)
3118{ 4875{
3119 /* kernels < 2.6.25 are borked 4876 /* kernels < 2.6.25 are borked
3120 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4877 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3121 */ 4878 */
… …
3126} 4883}
3127 4884
3128inline_size int 4885inline_size int
3129infy_newfd (void) 4886infy_newfd (void)
3130{ 4887{
3131#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4888#if defined IN_CLOEXEC && defined IN_NONBLOCK
3132 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4889 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3133 if (fd >= 0) 4890 if (fd >= 0)
3134 return fd; 4891 return fd;
3135#endif 4892#endif
3136 return inotify_init (); 4893 return inotify_init ();
… …
3211#else 4968#else
3212# define EV_LSTAT(p,b) lstat (p, b) 4969# define EV_LSTAT(p,b) lstat (p, b)
3213#endif 4970#endif
3214 4971
3215void 4972void
3216ev_stat_stat (EV_P_ ev_stat *w) 4973ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3217{ 4974{
3218 if (lstat (w->path, &w->attr) < 0) 4975 if (lstat (w->path, &w->attr) < 0)
3219 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
3220 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
3221 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
3222} 4979}
3223 4980
3224static void noinline 4981ecb_noinline
4982static void
3225stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3226{ 4984{
3227 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3228 4986
3229 ev_statdata prev = w->attr; 4987 ev_statdata prev = w->attr;
… …
3260 ev_feed_event (EV_A_ w, EV_STAT); 5018 ev_feed_event (EV_A_ w, EV_STAT);
3261 } 5019 }
3262} 5020}
3263 5021
3264void 5022void
3265ev_stat_start (EV_P_ ev_stat *w) 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3266{ 5024{
3267 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
3268 return; 5026 return;
3269 5027
3270 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
3271 5029
3272 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3291 5049
3292 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3293} 5051}
3294 5052
3295void 5053void
3296ev_stat_stop (EV_P_ ev_stat *w) 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3297{ 5055{
3298 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
3299 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
3300 return; 5058 return;
3301 5059
3302 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3303 5061
3304#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
… …
3317} 5075}
3318#endif 5076#endif
3319 5077
3320#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
3321void 5079void
3322ev_idle_start (EV_P_ ev_idle *w) 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3323{ 5081{
3324 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
3325 return; 5083 return;
3326 5084
3327 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
3328 5086
3329 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
3332 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
3333 5091
3334 ++idleall; 5092 ++idleall;
3335 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
3336 5094
3337 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5095 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3338 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
3339 } 5097 }
3340 5098
3341 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
3342} 5100}
3343 5101
3344void 5102void
3345ev_idle_stop (EV_P_ ev_idle *w) 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3346{ 5104{
3347 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
3348 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
3349 return; 5107 return;
3350 5108
3351 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
3352 5110
3353 { 5111 {
… …
3364} 5122}
3365#endif 5123#endif
3366 5124
3367#if EV_PREPARE_ENABLE 5125#if EV_PREPARE_ENABLE
3368void 5126void
3369ev_prepare_start (EV_P_ ev_prepare *w) 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3370{ 5128{
3371 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
3372 return; 5130 return;
3373 5131
3374 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3375 5133
3376 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
3377 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3378 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
3379 5137
3380 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3381} 5139}
3382 5140
3383void 5141void
3384ev_prepare_stop (EV_P_ ev_prepare *w) 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3385{ 5143{
3386 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3387 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3388 return; 5146 return;
3389 5147
3390 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3391 5149
3392 { 5150 {
… …
3402} 5160}
3403#endif 5161#endif
3404 5162
3405#if EV_CHECK_ENABLE 5163#if EV_CHECK_ENABLE
3406void 5164void
3407ev_check_start (EV_P_ ev_check *w) 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3408{ 5166{
3409 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
3410 return; 5168 return;
3411 5169
3412 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
3413 5171
3414 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
3415 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3416 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
3417 5175
3418 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
3419} 5177}
3420 5178
3421void 5179void
3422ev_check_stop (EV_P_ ev_check *w) 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3423{ 5181{
3424 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
3425 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
3426 return; 5184 return;
3427 5185
3428 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
3429 5187
3430 { 5188 {
… …
3439 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
3440} 5198}
3441#endif 5199#endif
3442 5200
3443#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
3444void noinline 5202ecb_noinline
5203void
3445ev_embed_sweep (EV_P_ ev_embed *w) 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3446{ 5205{
3447 ev_run (w->other, EVRUN_NOWAIT); 5206 ev_run (w->other, EVRUN_NOWAIT);
3448} 5207}
3449 5208
3450static void 5209static void
… …
3472 ev_run (EV_A_ EVRUN_NOWAIT); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 5232 }
3474 } 5233 }
3475} 5234}
3476 5235
5236#if EV_FORK_ENABLE
3477static void 5237static void
3478embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3479{ 5239{
3480 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5240 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3481 5241
… …
3488 ev_run (EV_A_ EVRUN_NOWAIT); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
3489 } 5249 }
3490 5250
3491 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
3492} 5252}
5253#endif
3493 5254
3494#if 0 5255#if 0
3495static void 5256static void
3496embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3497{ 5258{
3498 ev_idle_stop (EV_A_ idle); 5259 ev_idle_stop (EV_A_ idle);
3499} 5260}
3500#endif 5261#endif
3501 5262
3502void 5263void
3503ev_embed_start (EV_P_ ev_embed *w) 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3504{ 5265{
3505 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
3506 return; 5267 return;
3507 5268
3508 { 5269 {
3509 EV_P = w->other; 5270 EV_P = w->other;
3510 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5271 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3518 5279
3519 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
3520 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
3521 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
3522 5283
5284#if EV_FORK_ENABLE
3523 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
3524 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
3525 5288
3526 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3527 5290
3528 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
3529 5292
3530 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
3531} 5294}
3532 5295
3533void 5296void
3534ev_embed_stop (EV_P_ ev_embed *w) 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3535{ 5298{
3536 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
3537 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
3538 return; 5301 return;
3539 5302
3540 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
3541 5304
3542 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
3543 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
3544 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
3545 5310
3546 ev_stop (EV_A_ (W)w); 5311 ev_stop (EV_A_ (W)w);
3547 5312
3548 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
3549} 5314}
3550#endif 5315#endif
3551 5316
3552#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
3553void 5318void
3554ev_fork_start (EV_P_ ev_fork *w) 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3555{ 5320{
3556 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
3557 return; 5322 return;
3558 5323
3559 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
3560 5325
3561 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
3562 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3563 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
3564 5329
3565 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
3566} 5331}
3567 5332
3568void 5333void
3569ev_fork_stop (EV_P_ ev_fork *w) 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3570{ 5335{
3571 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
3572 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
3573 return; 5338 return;
3574 5339
3575 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
3576 5341
3577 { 5342 {
… …
3587} 5352}
3588#endif 5353#endif
3589 5354
3590#if EV_CLEANUP_ENABLE 5355#if EV_CLEANUP_ENABLE
3591void 5356void
3592ev_cleanup_start (EV_P_ ev_cleanup *w) 5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3593{ 5358{
3594 if (expect_false (ev_is_active (w))) 5359 if (ecb_expect_false (ev_is_active (w)))
3595 return; 5360 return;
3596 5361
3597 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
3598 5363
3599 ev_start (EV_A_ (W)w, ++cleanupcnt); 5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
3600 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3601 cleanups [cleanupcnt - 1] = w; 5366 cleanups [cleanupcnt - 1] = w;
3602 5367
3603 /* cleanup watchers should never keep a refcount on the loop */ 5368 /* cleanup watchers should never keep a refcount on the loop */
3604 ev_unref (EV_A); 5369 ev_unref (EV_A);
3605 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
3606} 5371}
3607 5372
3608void 5373void
3609ev_cleanup_stop (EV_P_ ev_cleanup *w) 5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3610{ 5375{
3611 clear_pending (EV_A_ (W)w); 5376 clear_pending (EV_A_ (W)w);
3612 if (expect_false (!ev_is_active (w))) 5377 if (ecb_expect_false (!ev_is_active (w)))
3613 return; 5378 return;
3614 5379
3615 EV_FREQUENT_CHECK; 5380 EV_FREQUENT_CHECK;
3616 ev_ref (EV_A); 5381 ev_ref (EV_A);
3617 5382
… …
3628} 5393}
3629#endif 5394#endif
3630 5395
3631#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
3632void 5397void
3633ev_async_start (EV_P_ ev_async *w) 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3634{ 5399{
3635 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
3636 return; 5401 return;
3637 5402
3638 w->sent = 0; 5403 w->sent = 0;
3639 5404
3640 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
3641 5406
3642 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
3643 5408
3644 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
3645 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3646 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
3647 5412
3648 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
3649} 5414}
3650 5415
3651void 5416void
3652ev_async_stop (EV_P_ ev_async *w) 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3653{ 5418{
3654 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
3655 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
3656 return; 5421 return;
3657 5422
3658 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
3659 5424
3660 { 5425 {
… …
3668 5433
3669 EV_FREQUENT_CHECK; 5434 EV_FREQUENT_CHECK;
3670} 5435}
3671 5436
3672void 5437void
3673ev_async_send (EV_P_ ev_async *w) 5438ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3674{ 5439{
3675 w->sent = 1; 5440 w->sent = 1;
3676 evpipe_write (EV_A_ &async_pending); 5441 evpipe_write (EV_A_ &async_pending);
3677} 5442}
3678#endif 5443#endif
… …
3715 5480
3716 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5481 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3717} 5482}
3718 5483
3719void 5484void
3720ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5485ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3721{ 5486{
3722 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5487 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3723
3724 if (expect_false (!once))
3725 {
3726 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3727 return;
3728 }
3729 5488
3730 once->cb = cb; 5489 once->cb = cb;
3731 once->arg = arg; 5490 once->arg = arg;
3732 5491
3733 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);
… …
3746} 5505}
3747 5506
3748/*****************************************************************************/ 5507/*****************************************************************************/
3749 5508
3750#if EV_WALK_ENABLE 5509#if EV_WALK_ENABLE
5510ecb_cold
3751void 5511void
3752ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5512ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3753{ 5513{
3754 int i, j; 5514 int i, j;
3755 ev_watcher_list *wl, *wn; 5515 ev_watcher_list *wl, *wn;
3756 5516
3757 if (types & (EV_IO | EV_EMBED)) 5517 if (types & (EV_IO | EV_EMBED))
… …
3800 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5560 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3801#endif 5561#endif
3802 5562
3803#if EV_IDLE_ENABLE 5563#if EV_IDLE_ENABLE
3804 if (types & EV_IDLE) 5564 if (types & EV_IDLE)
3805 for (j = NUMPRI; i--; ) 5565 for (j = NUMPRI; j--; )
3806 for (i = idlecnt [j]; i--; ) 5566 for (i = idlecnt [j]; i--; )
3807 cb (EV_A_ EV_IDLE, idles [j][i]); 5567 cb (EV_A_ EV_IDLE, idles [j][i]);
3808#endif 5568#endif
3809 5569
3810#if EV_FORK_ENABLE 5570#if EV_FORK_ENABLE
… …
3863 5623
3864#if EV_MULTIPLICITY 5624#if EV_MULTIPLICITY
3865 #include "ev_wrap.h" 5625 #include "ev_wrap.h"
3866#endif 5626#endif
3867 5627
3868EV_CPP(})
3869

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