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Comparing libev/ev.c (file contents):
Revision 1.391 by root, Thu Aug 4 13:57:16 2011 UTC vs.
Revision 1.536 by root, Wed Aug 10 16:50:05 2022 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2020 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 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#pragma clang diagnostic ignored "-Wunused-value"
41#pragma clang diagnostic ignored "-Wcomment"
42#pragma clang diagnostic ignored "-Wextern-initializer"
43
40/* this big block deduces configuration from config.h */ 44/* this big block deduces configuration from config.h */
41#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
42# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
43# include EV_CONFIG_H 47# include EV_CONFIG_H
44# else 48# else
45# include "config.h" 49# include "config.h"
46# endif 50# endif
47 51
48#if HAVE_FLOOR 52# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 53# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 54# define EV_USE_FLOOR 1
55# endif
51# endif 56# endif
52#endif
53 57
54# if HAVE_CLOCK_SYSCALL 58# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 59# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 60# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 61# ifndef EV_USE_REALTIME
… …
59# endif 63# endif
60# ifndef EV_USE_MONOTONIC 64# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 65# define EV_USE_MONOTONIC 1
62# endif 66# endif
63# endif 67# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 68# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 69# define EV_USE_CLOCK_SYSCALL 0
66# endif 70# endif
67 71
68# if HAVE_CLOCK_GETTIME 72# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 73# ifndef EV_USE_MONOTONIC
… …
115# else 119# else
116# undef EV_USE_EPOLL 120# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 121# define EV_USE_EPOLL 0
118# endif 122# endif
119 123
124# if HAVE_LINUX_AIO_ABI_H
125# ifndef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
127# endif
128# else
129# undef EV_USE_LINUXAIO
130# define EV_USE_LINUXAIO 0
131# endif
132
133# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
134# ifndef EV_USE_IOURING
135# define EV_USE_IOURING EV_FEATURE_BACKENDS
136# endif
137# else
138# undef EV_USE_IOURING
139# define EV_USE_IOURING 0
140# endif
141
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 142# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 143# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 144# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 145# endif
124# else 146# else
… …
159# endif 181# endif
160# else 182# else
161# undef EV_USE_EVENTFD 183# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 184# define EV_USE_EVENTFD 0
163# endif 185# endif
164 186
187# if HAVE_SYS_TIMERFD_H
188# ifndef EV_USE_TIMERFD
189# define EV_USE_TIMERFD EV_FEATURE_OS
190# endif
191# else
192# undef EV_USE_TIMERFD
193# define EV_USE_TIMERFD 0
165#endif 194# endif
195
196#endif
197
198/* OS X, in its infinite idiocy, actually HARDCODES
199 * a limit of 1024 into their select. Where people have brains,
200 * OS X engineers apparently have a vacuum. Or maybe they were
201 * ordered to have a vacuum, or they do anything for money.
202 * This might help. Or not.
203 * Note that this must be defined early, as other include files
204 * will rely on this define as well.
205 */
206#define _DARWIN_UNLIMITED_SELECT 1
166 207
167#include <stdlib.h> 208#include <stdlib.h>
168#include <string.h> 209#include <string.h>
169#include <fcntl.h> 210#include <fcntl.h>
170#include <stddef.h> 211#include <stddef.h>
… …
183# include EV_H 224# include EV_H
184#else 225#else
185# include "ev.h" 226# include "ev.h"
186#endif 227#endif
187 228
188EV_CPP(extern "C" {) 229#if EV_NO_THREADS
230# undef EV_NO_SMP
231# define EV_NO_SMP 1
232# undef ECB_NO_THREADS
233# define ECB_NO_THREADS 1
234#endif
235#if EV_NO_SMP
236# undef EV_NO_SMP
237# define ECB_NO_SMP 1
238#endif
189 239
190#ifndef _WIN32 240#ifndef _WIN32
191# include <sys/time.h> 241# include <sys/time.h>
192# include <sys/wait.h> 242# include <sys/wait.h>
193# include <unistd.h> 243# include <unistd.h>
194#else 244#else
195# include <io.h> 245# include <io.h>
196# define WIN32_LEAN_AND_MEAN 246# define WIN32_LEAN_AND_MEAN
247# include <winsock2.h>
197# include <windows.h> 248# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 249# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 250# define EV_SELECT_IS_WINSOCKET 1
200# endif 251# endif
201# undef EV_AVOID_STDIO 252# undef EV_AVOID_STDIO
202#endif 253#endif
203 254
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 255/* this block tries to deduce configuration from header-defined symbols and defaults */
213 256
214/* try to deduce the maximum number of signals on this platform */ 257/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 258#if defined EV_NSIG
216/* use what's provided */ 259/* use what's provided */
217#elif defined (NSIG) 260#elif defined NSIG
218# define EV_NSIG (NSIG) 261# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 262#elif defined _NSIG
220# define EV_NSIG (_NSIG) 263# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 264#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 265# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 266#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 267# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 268#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 269# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 270#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 271# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 272#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 273# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 274#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 275# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 276#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 277# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 278#else
236# error "unable to find value for NSIG, please report" 279# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 280#endif
241 281
242#ifndef EV_USE_FLOOR 282#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 283# define EV_USE_FLOOR 0
244#endif 284#endif
245 285
246#ifndef EV_USE_CLOCK_SYSCALL 286#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 287# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 288# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 289# else
250# define EV_USE_CLOCK_SYSCALL 0 290# define EV_USE_CLOCK_SYSCALL 0
251# endif 291# endif
252#endif 292#endif
253 293
294#if !(_POSIX_TIMERS > 0)
295# ifndef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 0
297# endif
298# ifndef EV_USE_REALTIME
299# define EV_USE_REALTIME 0
300# endif
301#endif
302
254#ifndef EV_USE_MONOTONIC 303#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 304# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 305# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 306# else
258# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
259# endif 308# endif
260#endif 309#endif
… …
297 346
298#ifndef EV_USE_PORT 347#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 348# define EV_USE_PORT 0
300#endif 349#endif
301 350
351#ifndef EV_USE_LINUXAIO
352# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
353# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
354# else
355# define EV_USE_LINUXAIO 0
356# endif
357#endif
358
359#ifndef EV_USE_IOURING
360# if __linux /* later checks might disable again */
361# define EV_USE_IOURING 1
362# else
363# define EV_USE_IOURING 0
364# endif
365#endif
366
302#ifndef EV_USE_INOTIFY 367#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 368# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 369# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 370# else
306# define EV_USE_INOTIFY 0 371# define EV_USE_INOTIFY 0
… …
329# else 394# else
330# define EV_USE_SIGNALFD 0 395# define EV_USE_SIGNALFD 0
331# endif 396# endif
332#endif 397#endif
333 398
399#ifndef EV_USE_TIMERFD
400# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
401# define EV_USE_TIMERFD EV_FEATURE_OS
402# else
403# define EV_USE_TIMERFD 0
404# endif
405#endif
406
334#if 0 /* debugging */ 407#if 0 /* debugging */
335# define EV_VERIFY 3 408# define EV_VERIFY 3
336# define EV_USE_4HEAP 1 409# define EV_USE_4HEAP 1
337# define EV_HEAP_CACHE_AT 1 410# define EV_HEAP_CACHE_AT 1
338#endif 411#endif
… …
347 420
348#ifndef EV_HEAP_CACHE_AT 421#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 422# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 423#endif
351 424
425#ifdef __ANDROID__
426/* supposedly, android doesn't typedef fd_mask */
427# undef EV_USE_SELECT
428# define EV_USE_SELECT 0
429/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
430# undef EV_USE_CLOCK_SYSCALL
431# define EV_USE_CLOCK_SYSCALL 0
432#endif
433
434/* aix's poll.h seems to cause lots of trouble */
435#ifdef _AIX
436/* AIX has a completely broken poll.h header */
437# undef EV_USE_POLL
438# define EV_USE_POLL 0
439#endif
440
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 441/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 442/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 443#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 444# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 445# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 446# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 447# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 448# define EV_USE_MONOTONIC 1
449# define EV_NEED_SYSCALL 1
360# else 450# else
361# undef EV_USE_CLOCK_SYSCALL 451# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0 452# define EV_USE_CLOCK_SYSCALL 0
363# endif 453# endif
364#endif 454#endif
365 455
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 456/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 457
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 458#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 459# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 460# define EV_USE_MONOTONIC 0
377#endif 461#endif
378 462
… …
384#if !EV_STAT_ENABLE 468#if !EV_STAT_ENABLE
385# undef EV_USE_INOTIFY 469# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0 470# define EV_USE_INOTIFY 0
387#endif 471#endif
388 472
473#if __linux && EV_USE_IOURING
474# include <linux/version.h>
475# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
476# undef EV_USE_IOURING
477# define EV_USE_IOURING 0
478# endif
479#endif
480
389#if !EV_USE_NANOSLEEP 481#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 482/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 483# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 484# include <sys/select.h>
485# endif
486#endif
487
488#if EV_USE_LINUXAIO
489# include <sys/syscall.h>
490# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
491# define EV_NEED_SYSCALL 1
492# else
493# undef EV_USE_LINUXAIO
494# define EV_USE_LINUXAIO 0
495# endif
496#endif
497
498#if EV_USE_IOURING
499# include <sys/syscall.h>
500# if !SYS_io_uring_register && __linux && !__alpha
501# define SYS_io_uring_setup 425
502# define SYS_io_uring_enter 426
503# define SYS_io_uring_register 427
504# endif
505# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
506# define EV_NEED_SYSCALL 1
507# else
508# undef EV_USE_IOURING
509# define EV_USE_IOURING 0
393# endif 510# endif
394#endif 511#endif
395 512
396#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
397# include <sys/statfs.h> 514# include <sys/statfs.h>
… …
401# undef EV_USE_INOTIFY 518# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 519# define EV_USE_INOTIFY 0
403# endif 520# endif
404#endif 521#endif
405 522
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif
409
410#if EV_USE_EVENTFD 523#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 524/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
412# include <stdint.h> 525# include <stdint.h>
413# ifndef EFD_NONBLOCK 526# ifndef EFD_NONBLOCK
414# define EFD_NONBLOCK O_NONBLOCK 527# define EFD_NONBLOCK O_NONBLOCK
415# endif 528# endif
416# ifndef EFD_CLOEXEC 529# ifndef EFD_CLOEXEC
… …
422# endif 535# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 536EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif 537#endif
425 538
426#if EV_USE_SIGNALFD 539#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 540/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
428# include <stdint.h> 541# include <stdint.h>
429# ifndef SFD_NONBLOCK 542# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK 543# define SFD_NONBLOCK O_NONBLOCK
431# endif 544# endif
432# ifndef SFD_CLOEXEC 545# ifndef SFD_CLOEXEC
… …
434# define SFD_CLOEXEC O_CLOEXEC 547# define SFD_CLOEXEC O_CLOEXEC
435# else 548# else
436# define SFD_CLOEXEC 02000000 549# define SFD_CLOEXEC 02000000
437# endif 550# endif
438# endif 551# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 552EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
440 553
441struct signalfd_siginfo 554struct signalfd_siginfo
442{ 555{
443 uint32_t ssi_signo; 556 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)]; 557 char pad[128 - sizeof (uint32_t)];
445}; 558};
446#endif 559#endif
447 560
448/**/ 561/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
562#if EV_USE_TIMERFD
563# include <sys/timerfd.h>
564/* timerfd is only used for periodics */
565# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
566# undef EV_USE_TIMERFD
567# define EV_USE_TIMERFD 0
568# endif
569#endif
570
571/*****************************************************************************/
449 572
450#if EV_VERIFY >= 3 573#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A) 574# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else 575#else
453# define EV_FREQUENT_CHECK do { } while (0) 576# define EV_FREQUENT_CHECK do { } while (0)
… …
458 * This value is good at least till the year 4000. 581 * This value is good at least till the year 4000.
459 */ 582 */
460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 583#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 584/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 585
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 586#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 587#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
588#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
465 589
590/* find a portable timestamp that is "always" in the future but fits into time_t.
591 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
592 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
593#define EV_TSTAMP_HUGE \
594 (sizeof (time_t) >= 8 ? 10000000000000. \
595 : 0 < (time_t)4294967295 ? 4294967295. \
596 : 2147483647.) \
597
598#ifndef EV_TS_CONST
599# define EV_TS_CONST(nv) nv
600# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
601# define EV_TS_FROM_USEC(us) us * 1e-6
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 602# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 603# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
604# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
605# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
606#endif
468 607
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 608/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 609/* ECB.H BEGIN */
471/* 610/*
472 * libecb - http://software.schmorp.de/pkg/libecb 611 * libecb - http://software.schmorp.de/pkg/libecb
473 * 612 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 613 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 614 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 615 * All rights reserved.
477 * 616 *
478 * Redistribution and use in source and binary forms, with or without modifica- 617 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 618 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 632 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 633 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 634 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 635 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 636 * OF THE POSSIBILITY OF SUCH DAMAGE.
637 *
638 * Alternatively, the contents of this file may be used under the terms of
639 * the GNU General Public License ("GPL") version 2 or any later version,
640 * in which case the provisions of the GPL are applicable instead of
641 * the above. If you wish to allow the use of your version of this file
642 * only under the terms of the GPL and not to allow others to use your
643 * version of this file under the BSD license, indicate your decision
644 * by deleting the provisions above and replace them with the notice
645 * and other provisions required by the GPL. If you do not delete the
646 * provisions above, a recipient may use your version of this file under
647 * either the BSD or the GPL.
498 */ 648 */
499 649
500#ifndef ECB_H 650#ifndef ECB_H
501#define ECB_H 651#define ECB_H
502 652
503#ifdef _WIN32 653/* 16 bits major, 16 bits minor */
654#define ECB_VERSION 0x00010008
655
656#include <string.h> /* for memcpy */
657
658#if defined (_WIN32) && !defined (__MINGW32__)
504 typedef signed char int8_t; 659 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 660 typedef unsigned char uint8_t;
661 typedef signed char int_fast8_t;
662 typedef unsigned char uint_fast8_t;
506 typedef signed short int16_t; 663 typedef signed short int16_t;
507 typedef unsigned short uint16_t; 664 typedef unsigned short uint16_t;
665 typedef signed int int_fast16_t;
666 typedef unsigned int uint_fast16_t;
508 typedef signed int int32_t; 667 typedef signed int int32_t;
509 typedef unsigned int uint32_t; 668 typedef unsigned int uint32_t;
669 typedef signed int int_fast32_t;
670 typedef unsigned int uint_fast32_t;
510 #if __GNUC__ 671 #if __GNUC__
511 typedef signed long long int64_t; 672 typedef signed long long int64_t;
512 typedef unsigned long long uint64_t; 673 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 674 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 675 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 676 typedef unsigned __int64 uint64_t;
516 #endif 677 #endif
678 typedef int64_t int_fast64_t;
679 typedef uint64_t uint_fast64_t;
680 #ifdef _WIN64
681 #define ECB_PTRSIZE 8
682 typedef uint64_t uintptr_t;
683 typedef int64_t intptr_t;
684 #else
685 #define ECB_PTRSIZE 4
686 typedef uint32_t uintptr_t;
687 typedef int32_t intptr_t;
688 #endif
517#else 689#else
518 #include <inttypes.h> 690 #include <inttypes.h>
691 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
692 #define ECB_PTRSIZE 8
693 #else
694 #define ECB_PTRSIZE 4
695 #endif
696#endif
697
698#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
699#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
700
701#ifndef ECB_OPTIMIZE_SIZE
702 #if __OPTIMIZE_SIZE__
703 #define ECB_OPTIMIZE_SIZE 1
704 #else
705 #define ECB_OPTIMIZE_SIZE 0
706 #endif
707#endif
708
709/* work around x32 idiocy by defining proper macros */
710#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
711 #if _ILP32
712 #define ECB_AMD64_X32 1
713 #else
714 #define ECB_AMD64 1
715 #endif
519#endif 716#endif
520 717
521/* many compilers define _GNUC_ to some versions but then only implement 718/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 719 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 720 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 721 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 722 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place. 723 * an issue with that they should have done it right in the first place.
527 */ 724 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 725#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 726 #define ECB_GCC_VERSION(major,minor) 0
531 #else 727#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 728 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 729#endif
730
731#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
732
733#if __clang__ && defined __has_builtin
734 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
735#else
736 #define ECB_CLANG_BUILTIN(x) 0
737#endif
738
739#if __clang__ && defined __has_extension
740 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
741#else
742 #define ECB_CLANG_EXTENSION(x) 0
743#endif
744
745#define ECB_CPP (__cplusplus+0)
746#define ECB_CPP11 (__cplusplus >= 201103L)
747#define ECB_CPP14 (__cplusplus >= 201402L)
748#define ECB_CPP17 (__cplusplus >= 201703L)
749
750#if ECB_CPP
751 #define ECB_C 0
752 #define ECB_STDC_VERSION 0
753#else
754 #define ECB_C 1
755 #define ECB_STDC_VERSION __STDC_VERSION__
756#endif
757
758#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
759#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
760#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
761
762#if ECB_CPP
763 #define ECB_EXTERN_C extern "C"
764 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
765 #define ECB_EXTERN_C_END }
766#else
767 #define ECB_EXTERN_C extern
768 #define ECB_EXTERN_C_BEG
769 #define ECB_EXTERN_C_END
534#endif 770#endif
535 771
536/*****************************************************************************/ 772/*****************************************************************************/
537 773
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 774/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 775/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 776
541#if ECB_NO_THREADS || ECB_NO_SMP 777#if ECB_NO_THREADS
778 #define ECB_NO_SMP 1
779#endif
780
781#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 782 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) 783#endif
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) 784
785/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
786#if __xlC__ && ECB_CPP
787 #include <builtins.h>
788#endif
789
790#if 1400 <= _MSC_VER
791 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
545#endif 792#endif
546 793
547#ifndef ECB_MEMORY_FENCE 794#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 795 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 796 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
797 #if __i386 || __i386__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __amd64 801 #elif ECB_GCC_AMD64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 803 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 804 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
805 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
806 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
807 #elif defined __ARM_ARCH_2__ \
808 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
809 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
810 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
811 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
812 || defined __ARM_ARCH_5TEJ__
813 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
814 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
815 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
816 || defined __ARM_ARCH_6T2__
817 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
818 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
819 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
821 #elif __aarch64__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
823 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
825 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
826 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
827 #elif defined __s390__ || defined __s390x__
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
829 #elif defined __mips__
830 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
831 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
833 #elif defined __alpha__
834 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
835 #elif defined __hppa__
836 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
837 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
838 #elif defined __ia64__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
840 #elif defined __m68k__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #elif defined __m88k__
843 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
844 #elif defined __sh__
845 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
557 #endif 846 #endif
558 #endif 847 #endif
559#endif 848#endif
560 849
561#ifndef ECB_MEMORY_FENCE 850#ifndef ECB_MEMORY_FENCE
562 #if ECB_GCC_VERSION(4,4) 851 #if ECB_GCC_VERSION(4,7)
852 /* see comment below (stdatomic.h) about the C11 memory model. */
853 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
854 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
855 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
856 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
857
858 #elif ECB_CLANG_EXTENSION(c_atomic)
859 /* see comment below (stdatomic.h) about the C11 memory model. */
860 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
861 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
862 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
863 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
864
865 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
563 #define ECB_MEMORY_FENCE __sync_synchronize () 866 #define ECB_MEMORY_FENCE __sync_synchronize ()
564 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) 867 #elif _MSC_VER >= 1500 /* VC++ 2008 */
565 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) 868 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
869 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
870 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
871 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
872 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
566 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 873 #elif _MSC_VER >= 1400 /* VC++ 2005 */
567 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 874 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
568 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 875 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
569 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 876 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
570 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 877 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
571 #elif defined(_WIN32) 878 #elif defined _WIN32
572 #include <WinNT.h> 879 #include <WinNT.h>
573 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 880 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
574 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 881 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
575 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 882 #include <mbarrier.h>
883 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
884 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
885 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
886 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
887 #elif __xlC__
888 #define ECB_MEMORY_FENCE __sync ()
576 #endif 889 #endif
577#endif 890#endif
578 891
579#ifndef ECB_MEMORY_FENCE 892#ifndef ECB_MEMORY_FENCE
893 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
894 /* we assume that these memory fences work on all variables/all memory accesses, */
895 /* not just C11 atomics and atomic accesses */
896 #include <stdatomic.h>
897 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
898 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
899 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
900 #endif
901#endif
902
903#ifndef ECB_MEMORY_FENCE
904 #if !ECB_AVOID_PTHREADS
580 /* 905 /*
581 * if you get undefined symbol references to pthread_mutex_lock, 906 * if you get undefined symbol references to pthread_mutex_lock,
582 * or failure to find pthread.h, then you should implement 907 * or failure to find pthread.h, then you should implement
583 * the ECB_MEMORY_FENCE operations for your cpu/compiler 908 * the ECB_MEMORY_FENCE operations for your cpu/compiler
584 * OR provide pthread.h and link against the posix thread library 909 * OR provide pthread.h and link against the posix thread library
585 * of your system. 910 * of your system.
586 */ 911 */
587 #include <pthread.h> 912 #include <pthread.h>
588 #define ECB_NEEDS_PTHREADS 1 913 #define ECB_NEEDS_PTHREADS 1
589 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 914 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
590 915
591 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 916 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
592 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 917 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
918 #endif
919#endif
920
921#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
593 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
594 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 926 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
595#endif 927#endif
596 928
929#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
930 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
931#endif
932
597/*****************************************************************************/ 933/*****************************************************************************/
598 934
599#define ECB_C99 (__STDC_VERSION__ >= 199901L) 935#if ECB_CPP
600
601#if __cplusplus
602 #define ecb_inline static inline 936 #define ecb_inline static inline
603#elif ECB_GCC_VERSION(2,5) 937#elif ECB_GCC_VERSION(2,5)
604 #define ecb_inline static __inline__ 938 #define ecb_inline static __inline__
605#elif ECB_C99 939#elif ECB_C99
606 #define ecb_inline static inline 940 #define ecb_inline static inline
… …
620 954
621#define ECB_CONCAT_(a, b) a ## b 955#define ECB_CONCAT_(a, b) a ## b
622#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 956#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
623#define ECB_STRINGIFY_(a) # a 957#define ECB_STRINGIFY_(a) # a
624#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 958#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
959#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
625 960
626#define ecb_function_ ecb_inline 961#define ecb_function_ ecb_inline
627 962
628#if ECB_GCC_VERSION(3,1) 963#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
629 #define ecb_attribute(attrlist) __attribute__(attrlist) 964 #define ecb_attribute(attrlist) __attribute__ (attrlist)
965#else
966 #define ecb_attribute(attrlist)
967#endif
968
969#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
630 #define ecb_is_constant(expr) __builtin_constant_p (expr) 970 #define ecb_is_constant(expr) __builtin_constant_p (expr)
971#else
972 /* possible C11 impl for integral types
973 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
974 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
975
976 #define ecb_is_constant(expr) 0
977#endif
978
979#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
631 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 980 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
981#else
982 #define ecb_expect(expr,value) (expr)
983#endif
984
985#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
632 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 986 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
633#else 987#else
634 #define ecb_attribute(attrlist)
635 #define ecb_is_constant(expr) 0
636 #define ecb_expect(expr,value) (expr)
637 #define ecb_prefetch(addr,rw,locality) 988 #define ecb_prefetch(addr,rw,locality)
638#endif 989#endif
639 990
640/* no emulation for ecb_decltype */ 991/* no emulation for ecb_decltype */
641#if ECB_GCC_VERSION(4,5) 992#if ECB_CPP11
993 // older implementations might have problems with decltype(x)::type, work around it
994 template<class T> struct ecb_decltype_t { typedef T type; };
642 #define ecb_decltype(x) __decltype(x) 995 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
643#elif ECB_GCC_VERSION(3,0) 996#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
644 #define ecb_decltype(x) __typeof(x) 997 #define ecb_decltype(x) __typeof__ (x)
645#endif 998#endif
646 999
1000#if _MSC_VER >= 1300
1001 #define ecb_deprecated __declspec (deprecated)
1002#else
1003 #define ecb_deprecated ecb_attribute ((__deprecated__))
1004#endif
1005
1006#if _MSC_VER >= 1500
1007 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1008#elif ECB_GCC_VERSION(4,5)
1009 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1010#else
1011 #define ecb_deprecated_message(msg) ecb_deprecated
1012#endif
1013
1014#if _MSC_VER >= 1400
1015 #define ecb_noinline __declspec (noinline)
1016#else
647#define ecb_noinline ecb_attribute ((__noinline__)) 1017 #define ecb_noinline ecb_attribute ((__noinline__))
648#define ecb_noreturn ecb_attribute ((__noreturn__)) 1018#endif
1019
649#define ecb_unused ecb_attribute ((__unused__)) 1020#define ecb_unused ecb_attribute ((__unused__))
650#define ecb_const ecb_attribute ((__const__)) 1021#define ecb_const ecb_attribute ((__const__))
651#define ecb_pure ecb_attribute ((__pure__)) 1022#define ecb_pure ecb_attribute ((__pure__))
1023
1024#if ECB_C11 || __IBMC_NORETURN
1025 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1026 #define ecb_noreturn _Noreturn
1027#elif ECB_CPP11
1028 #define ecb_noreturn [[noreturn]]
1029#elif _MSC_VER >= 1200
1030 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1031 #define ecb_noreturn __declspec (noreturn)
1032#else
1033 #define ecb_noreturn ecb_attribute ((__noreturn__))
1034#endif
652 1035
653#if ECB_GCC_VERSION(4,3) 1036#if ECB_GCC_VERSION(4,3)
654 #define ecb_artificial ecb_attribute ((__artificial__)) 1037 #define ecb_artificial ecb_attribute ((__artificial__))
655 #define ecb_hot ecb_attribute ((__hot__)) 1038 #define ecb_hot ecb_attribute ((__hot__))
656 #define ecb_cold ecb_attribute ((__cold__)) 1039 #define ecb_cold ecb_attribute ((__cold__))
… …
668/* for compatibility to the rest of the world */ 1051/* for compatibility to the rest of the world */
669#define ecb_likely(expr) ecb_expect_true (expr) 1052#define ecb_likely(expr) ecb_expect_true (expr)
670#define ecb_unlikely(expr) ecb_expect_false (expr) 1053#define ecb_unlikely(expr) ecb_expect_false (expr)
671 1054
672/* count trailing zero bits and count # of one bits */ 1055/* count trailing zero bits and count # of one bits */
673#if ECB_GCC_VERSION(3,4) 1056#if ECB_GCC_VERSION(3,4) \
1057 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1058 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1059 && ECB_CLANG_BUILTIN(__builtin_popcount))
674 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1060 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
675 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1061 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
676 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1062 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
677 #define ecb_ctz32(x) __builtin_ctz (x) 1063 #define ecb_ctz32(x) __builtin_ctz (x)
678 #define ecb_ctz64(x) __builtin_ctzll (x) 1064 #define ecb_ctz64(x) __builtin_ctzll (x)
679 #define ecb_popcount32(x) __builtin_popcount (x) 1065 #define ecb_popcount32(x) __builtin_popcount (x)
680 /* no popcountll */ 1066 /* no popcountll */
681#else 1067#else
682 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1068 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
683 ecb_function_ int 1069 ecb_function_ ecb_const int
684 ecb_ctz32 (uint32_t x) 1070 ecb_ctz32 (uint32_t x)
685 { 1071 {
1072#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1073 unsigned long r;
1074 _BitScanForward (&r, x);
1075 return (int)r;
1076#else
686 int r = 0; 1077 int r = 0;
687 1078
688 x &= ~x + 1; /* this isolates the lowest bit */ 1079 x &= ~x + 1; /* this isolates the lowest bit */
689 1080
690#if ECB_branchless_on_i386 1081#if ECB_branchless_on_i386
… …
700 if (x & 0xff00ff00) r += 8; 1091 if (x & 0xff00ff00) r += 8;
701 if (x & 0xffff0000) r += 16; 1092 if (x & 0xffff0000) r += 16;
702#endif 1093#endif
703 1094
704 return r; 1095 return r;
1096#endif
705 } 1097 }
706 1098
707 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1099 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
708 ecb_function_ int 1100 ecb_function_ ecb_const int
709 ecb_ctz64 (uint64_t x) 1101 ecb_ctz64 (uint64_t x)
710 { 1102 {
1103#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1104 unsigned long r;
1105 _BitScanForward64 (&r, x);
1106 return (int)r;
1107#else
711 int shift = x & 0xffffffffU ? 0 : 32; 1108 int shift = x & 0xffffffff ? 0 : 32;
712 return ecb_ctz32 (x >> shift) + shift; 1109 return ecb_ctz32 (x >> shift) + shift;
1110#endif
713 } 1111 }
714 1112
715 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1113 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
716 ecb_function_ int 1114 ecb_function_ ecb_const int
717 ecb_popcount32 (uint32_t x) 1115 ecb_popcount32 (uint32_t x)
718 { 1116 {
719 x -= (x >> 1) & 0x55555555; 1117 x -= (x >> 1) & 0x55555555;
720 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1118 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
721 x = ((x >> 4) + x) & 0x0f0f0f0f; 1119 x = ((x >> 4) + x) & 0x0f0f0f0f;
722 x *= 0x01010101; 1120 x *= 0x01010101;
723 1121
724 return x >> 24; 1122 return x >> 24;
725 } 1123 }
726 1124
727 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1125 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
728 ecb_function_ int ecb_ld32 (uint32_t x) 1126 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
729 { 1127 {
1128#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1129 unsigned long r;
1130 _BitScanReverse (&r, x);
1131 return (int)r;
1132#else
730 int r = 0; 1133 int r = 0;
731 1134
732 if (x >> 16) { x >>= 16; r += 16; } 1135 if (x >> 16) { x >>= 16; r += 16; }
733 if (x >> 8) { x >>= 8; r += 8; } 1136 if (x >> 8) { x >>= 8; r += 8; }
734 if (x >> 4) { x >>= 4; r += 4; } 1137 if (x >> 4) { x >>= 4; r += 4; }
735 if (x >> 2) { x >>= 2; r += 2; } 1138 if (x >> 2) { x >>= 2; r += 2; }
736 if (x >> 1) { r += 1; } 1139 if (x >> 1) { r += 1; }
737 1140
738 return r; 1141 return r;
1142#endif
739 } 1143 }
740 1144
741 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1145 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
742 ecb_function_ int ecb_ld64 (uint64_t x) 1146 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
743 { 1147 {
1148#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1149 unsigned long r;
1150 _BitScanReverse64 (&r, x);
1151 return (int)r;
1152#else
744 int r = 0; 1153 int r = 0;
745 1154
746 if (x >> 32) { x >>= 32; r += 32; } 1155 if (x >> 32) { x >>= 32; r += 32; }
747 1156
748 return r + ecb_ld32 (x); 1157 return r + ecb_ld32 (x);
1158#endif
749 } 1159 }
750#endif 1160#endif
1161
1162ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1163ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1164ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1165ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1166
1167ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1168ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1169{
1170 return ( (x * 0x0802U & 0x22110U)
1171 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1172}
1173
1174ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1175ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1176{
1177 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1178 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1179 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1180 x = ( x >> 8 ) | ( x << 8);
1181
1182 return x;
1183}
1184
1185ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1186ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1187{
1188 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1189 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1190 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1191 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1192 x = ( x >> 16 ) | ( x << 16);
1193
1194 return x;
1195}
751 1196
752/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1197/* popcount64 is only available on 64 bit cpus as gcc builtin */
753/* so for this version we are lazy */ 1198/* so for this version we are lazy */
754ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1199ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
755ecb_function_ int 1200ecb_function_ ecb_const int
756ecb_popcount64 (uint64_t x) 1201ecb_popcount64 (uint64_t x)
757{ 1202{
758 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1203 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
759} 1204}
760 1205
761ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1206ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
762ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1207ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
763ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1208ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
764ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1209ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
765ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1210ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
766ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1211ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
767ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1212ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
768ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1213ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
769 1214
770ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1215ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
771ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1216ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
772ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1217ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
773ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1218ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
774ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1219ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
775ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1220ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
776ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1221ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
777ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1222ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
778 1223
779#if ECB_GCC_VERSION(4,3) 1224#if ECB_CPP
1225
1226inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1227inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1228inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1229inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1230
1231inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1232inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1233inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1234inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1235
1236inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1237inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1238inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1239inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1240
1241inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1242inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1243inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1244inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1245
1246inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1247inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1248inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1249
1250inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1251inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1252inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1253inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1254
1255inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1256inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1257inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1258inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1259
1260#endif
1261
1262#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1263 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1264 #define ecb_bswap16(x) __builtin_bswap16 (x)
1265 #else
780 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1266 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1267 #endif
781 #define ecb_bswap32(x) __builtin_bswap32 (x) 1268 #define ecb_bswap32(x) __builtin_bswap32 (x)
782 #define ecb_bswap64(x) __builtin_bswap64 (x) 1269 #define ecb_bswap64(x) __builtin_bswap64 (x)
1270#elif _MSC_VER
1271 #include <stdlib.h>
1272 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1273 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1274 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
783#else 1275#else
784 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1276 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
785 ecb_function_ uint16_t 1277 ecb_function_ ecb_const uint16_t
786 ecb_bswap16 (uint16_t x) 1278 ecb_bswap16 (uint16_t x)
787 { 1279 {
788 return ecb_rotl16 (x, 8); 1280 return ecb_rotl16 (x, 8);
789 } 1281 }
790 1282
791 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1283 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
792 ecb_function_ uint32_t 1284 ecb_function_ ecb_const uint32_t
793 ecb_bswap32 (uint32_t x) 1285 ecb_bswap32 (uint32_t x)
794 { 1286 {
795 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1287 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
796 } 1288 }
797 1289
798 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1290 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
799 ecb_function_ uint64_t 1291 ecb_function_ ecb_const uint64_t
800 ecb_bswap64 (uint64_t x) 1292 ecb_bswap64 (uint64_t x)
801 { 1293 {
802 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1294 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
803 } 1295 }
804#endif 1296#endif
805 1297
806#if ECB_GCC_VERSION(4,5) 1298#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
807 #define ecb_unreachable() __builtin_unreachable () 1299 #define ecb_unreachable() __builtin_unreachable ()
808#else 1300#else
809 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1301 /* this seems to work fine, but gcc always emits a warning for it :/ */
810 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1302 ecb_inline ecb_noreturn void ecb_unreachable (void);
811 ecb_function_ void ecb_unreachable (void) { } 1303 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
812#endif 1304#endif
813 1305
814/* try to tell the compiler that some condition is definitely true */ 1306/* try to tell the compiler that some condition is definitely true */
815#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1307#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
816 1308
817ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1309ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
818ecb_function_ unsigned char 1310ecb_inline ecb_const uint32_t
819ecb_byteorder_helper (void) 1311ecb_byteorder_helper (void)
820{ 1312{
821 const uint32_t u = 0x11223344; 1313 /* the union code still generates code under pressure in gcc, */
822 return *(unsigned char *)&u; 1314 /* but less than using pointers, and always seems to */
1315 /* successfully return a constant. */
1316 /* the reason why we have this horrible preprocessor mess */
1317 /* is to avoid it in all cases, at least on common architectures */
1318 /* or when using a recent enough gcc version (>= 4.6) */
1319#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1320 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1321 #define ECB_LITTLE_ENDIAN 1
1322 return 0x44332211;
1323#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1324 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1325 #define ECB_BIG_ENDIAN 1
1326 return 0x11223344;
1327#else
1328 union
1329 {
1330 uint8_t c[4];
1331 uint32_t u;
1332 } u = { 0x11, 0x22, 0x33, 0x44 };
1333 return u.u;
1334#endif
823} 1335}
824 1336
825ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1337ecb_inline ecb_const ecb_bool ecb_big_endian (void);
826ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1338ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
827ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1339ecb_inline ecb_const ecb_bool ecb_little_endian (void);
828ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1340ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1341
1342/*****************************************************************************/
1343/* unaligned load/store */
1344
1345ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1350ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1351ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1354ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1355ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1356
1357ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1362ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1363ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1364
1365ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1370ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1371ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1372
1373ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1374ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1375ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1376
1377ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1378ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1379ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1380
1381ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1382ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1383ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1384
1385#if ECB_CPP
1386
1387inline uint8_t ecb_bswap (uint8_t v) { return v; }
1388inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1389inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1390inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1391
1392template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1393template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1394template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1395template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1396template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1397template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1398template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1399template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1400
1401template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1402template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1403template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1404template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1405template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1406template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1407template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1408template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1409
1410#endif
1411
1412/*****************************************************************************/
829 1413
830#if ECB_GCC_VERSION(3,0) || ECB_C99 1414#if ECB_GCC_VERSION(3,0) || ECB_C99
831 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1415 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
832#else 1416#else
833 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1417 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1418#endif
1419
1420#if ECB_CPP
1421 template<typename T>
1422 static inline T ecb_div_rd (T val, T div)
1423 {
1424 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1425 }
1426 template<typename T>
1427 static inline T ecb_div_ru (T val, T div)
1428 {
1429 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1430 }
1431#else
1432 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1433 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
834#endif 1434#endif
835 1435
836#if ecb_cplusplus_does_not_suck 1436#if ecb_cplusplus_does_not_suck
837 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1437 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
838 template<typename T, int N> 1438 template<typename T, int N>
… …
842 } 1442 }
843#else 1443#else
844 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1444 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
845#endif 1445#endif
846 1446
1447/*****************************************************************************/
1448
1449ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1450ecb_function_ ecb_const uint32_t
1451ecb_binary16_to_binary32 (uint32_t x)
1452{
1453 unsigned int s = (x & 0x8000) << (31 - 15);
1454 int e = (x >> 10) & 0x001f;
1455 unsigned int m = x & 0x03ff;
1456
1457 if (ecb_expect_false (e == 31))
1458 /* infinity or NaN */
1459 e = 255 - (127 - 15);
1460 else if (ecb_expect_false (!e))
1461 {
1462 if (ecb_expect_true (!m))
1463 /* zero, handled by code below by forcing e to 0 */
1464 e = 0 - (127 - 15);
1465 else
1466 {
1467 /* subnormal, renormalise */
1468 unsigned int s = 10 - ecb_ld32 (m);
1469
1470 m = (m << s) & 0x3ff; /* mask implicit bit */
1471 e -= s - 1;
1472 }
1473 }
1474
1475 /* e and m now are normalised, or zero, (or inf or nan) */
1476 e += 127 - 15;
1477
1478 return s | (e << 23) | (m << (23 - 10));
1479}
1480
1481ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1482ecb_function_ ecb_const uint16_t
1483ecb_binary32_to_binary16 (uint32_t x)
1484{
1485 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1486 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1487 unsigned int m = x & 0x007fffff;
1488
1489 x &= 0x7fffffff;
1490
1491 /* if it's within range of binary16 normals, use fast path */
1492 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1493 {
1494 /* mantissa round-to-even */
1495 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1496
1497 /* handle overflow */
1498 if (ecb_expect_false (m >= 0x00800000))
1499 {
1500 m >>= 1;
1501 e += 1;
1502 }
1503
1504 return s | (e << 10) | (m >> (23 - 10));
1505 }
1506
1507 /* handle large numbers and infinity */
1508 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1509 return s | 0x7c00;
1510
1511 /* handle zero, subnormals and small numbers */
1512 if (ecb_expect_true (x < 0x38800000))
1513 {
1514 /* zero */
1515 if (ecb_expect_true (!x))
1516 return s;
1517
1518 /* handle subnormals */
1519
1520 /* too small, will be zero */
1521 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1522 return s;
1523
1524 m |= 0x00800000; /* make implicit bit explicit */
1525
1526 /* very tricky - we need to round to the nearest e (+10) bit value */
1527 {
1528 unsigned int bits = 14 - e;
1529 unsigned int half = (1 << (bits - 1)) - 1;
1530 unsigned int even = (m >> bits) & 1;
1531
1532 /* if this overflows, we will end up with a normalised number */
1533 m = (m + half + even) >> bits;
1534 }
1535
1536 return s | m;
1537 }
1538
1539 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1540 m >>= 13;
1541
1542 return s | 0x7c00 | m | !m;
1543}
1544
1545/*******************************************************************************/
1546/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1547
1548/* basically, everything uses "ieee pure-endian" floating point numbers */
1549/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1550#if 0 \
1551 || __i386 || __i386__ \
1552 || ECB_GCC_AMD64 \
1553 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1554 || defined __s390__ || defined __s390x__ \
1555 || defined __mips__ \
1556 || defined __alpha__ \
1557 || defined __hppa__ \
1558 || defined __ia64__ \
1559 || defined __m68k__ \
1560 || defined __m88k__ \
1561 || defined __sh__ \
1562 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1563 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1564 || defined __aarch64__
1565 #define ECB_STDFP 1
1566#else
1567 #define ECB_STDFP 0
1568#endif
1569
1570#ifndef ECB_NO_LIBM
1571
1572 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1573
1574 /* only the oldest of old doesn't have this one. solaris. */
1575 #ifdef INFINITY
1576 #define ECB_INFINITY INFINITY
1577 #else
1578 #define ECB_INFINITY HUGE_VAL
1579 #endif
1580
1581 #ifdef NAN
1582 #define ECB_NAN NAN
1583 #else
1584 #define ECB_NAN ECB_INFINITY
1585 #endif
1586
1587 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1588 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1589 #define ecb_frexpf(x,e) frexpf ((x), (e))
1590 #else
1591 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1592 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1593 #endif
1594
1595 /* convert a float to ieee single/binary32 */
1596 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1597 ecb_function_ ecb_const uint32_t
1598 ecb_float_to_binary32 (float x)
1599 {
1600 uint32_t r;
1601
1602 #if ECB_STDFP
1603 memcpy (&r, &x, 4);
1604 #else
1605 /* slow emulation, works for anything but -0 */
1606 uint32_t m;
1607 int e;
1608
1609 if (x == 0e0f ) return 0x00000000U;
1610 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1611 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1612 if (x != x ) return 0x7fbfffffU;
1613
1614 m = ecb_frexpf (x, &e) * 0x1000000U;
1615
1616 r = m & 0x80000000U;
1617
1618 if (r)
1619 m = -m;
1620
1621 if (e <= -126)
1622 {
1623 m &= 0xffffffU;
1624 m >>= (-125 - e);
1625 e = -126;
1626 }
1627
1628 r |= (e + 126) << 23;
1629 r |= m & 0x7fffffU;
1630 #endif
1631
1632 return r;
1633 }
1634
1635 /* converts an ieee single/binary32 to a float */
1636 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1637 ecb_function_ ecb_const float
1638 ecb_binary32_to_float (uint32_t x)
1639 {
1640 float r;
1641
1642 #if ECB_STDFP
1643 memcpy (&r, &x, 4);
1644 #else
1645 /* emulation, only works for normals and subnormals and +0 */
1646 int neg = x >> 31;
1647 int e = (x >> 23) & 0xffU;
1648
1649 x &= 0x7fffffU;
1650
1651 if (e)
1652 x |= 0x800000U;
1653 else
1654 e = 1;
1655
1656 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1657 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1658
1659 r = neg ? -r : r;
1660 #endif
1661
1662 return r;
1663 }
1664
1665 /* convert a double to ieee double/binary64 */
1666 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1667 ecb_function_ ecb_const uint64_t
1668 ecb_double_to_binary64 (double x)
1669 {
1670 uint64_t r;
1671
1672 #if ECB_STDFP
1673 memcpy (&r, &x, 8);
1674 #else
1675 /* slow emulation, works for anything but -0 */
1676 uint64_t m;
1677 int e;
1678
1679 if (x == 0e0 ) return 0x0000000000000000U;
1680 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1681 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1682 if (x != x ) return 0X7ff7ffffffffffffU;
1683
1684 m = frexp (x, &e) * 0x20000000000000U;
1685
1686 r = m & 0x8000000000000000;;
1687
1688 if (r)
1689 m = -m;
1690
1691 if (e <= -1022)
1692 {
1693 m &= 0x1fffffffffffffU;
1694 m >>= (-1021 - e);
1695 e = -1022;
1696 }
1697
1698 r |= ((uint64_t)(e + 1022)) << 52;
1699 r |= m & 0xfffffffffffffU;
1700 #endif
1701
1702 return r;
1703 }
1704
1705 /* converts an ieee double/binary64 to a double */
1706 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1707 ecb_function_ ecb_const double
1708 ecb_binary64_to_double (uint64_t x)
1709 {
1710 double r;
1711
1712 #if ECB_STDFP
1713 memcpy (&r, &x, 8);
1714 #else
1715 /* emulation, only works for normals and subnormals and +0 */
1716 int neg = x >> 63;
1717 int e = (x >> 52) & 0x7ffU;
1718
1719 x &= 0xfffffffffffffU;
1720
1721 if (e)
1722 x |= 0x10000000000000U;
1723 else
1724 e = 1;
1725
1726 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1727 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1728
1729 r = neg ? -r : r;
1730 #endif
1731
1732 return r;
1733 }
1734
1735 /* convert a float to ieee half/binary16 */
1736 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1737 ecb_function_ ecb_const uint16_t
1738 ecb_float_to_binary16 (float x)
1739 {
1740 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1741 }
1742
1743 /* convert an ieee half/binary16 to float */
1744 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1745 ecb_function_ ecb_const float
1746 ecb_binary16_to_float (uint16_t x)
1747 {
1748 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1749 }
1750
1751#endif
1752
847#endif 1753#endif
848 1754
849/* ECB.H END */ 1755/* ECB.H END */
850 1756
851#define expect_false(cond) ecb_expect_false (cond) 1757#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
852#define expect_true(cond) ecb_expect_true (cond) 1758/* if your architecture doesn't need memory fences, e.g. because it is
853#define noinline ecb_noinline 1759 * single-cpu/core, or if you use libev in a project that doesn't use libev
1760 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1761 * libev, in which cases the memory fences become nops.
1762 * alternatively, you can remove this #error and link against libpthread,
1763 * which will then provide the memory fences.
1764 */
1765# error "memory fences not defined for your architecture, please report"
1766#endif
1767
1768#ifndef ECB_MEMORY_FENCE
1769# define ECB_MEMORY_FENCE do { } while (0)
1770# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1771# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1772#endif
854 1773
855#define inline_size ecb_inline 1774#define inline_size ecb_inline
856 1775
857#if EV_FEATURE_CODE 1776#if EV_FEATURE_CODE
858# define inline_speed ecb_inline 1777# define inline_speed ecb_inline
859#else 1778#else
860# define inline_speed static noinline 1779# define inline_speed ecb_noinline static
861#endif 1780#endif
1781
1782/*****************************************************************************/
1783/* raw syscall wrappers */
1784
1785#if EV_NEED_SYSCALL
1786
1787#include <sys/syscall.h>
1788
1789/*
1790 * define some syscall wrappers for common architectures
1791 * this is mostly for nice looks during debugging, not performance.
1792 * our syscalls return < 0, not == -1, on error. which is good
1793 * enough for linux aio.
1794 * TODO: arm is also common nowadays, maybe even mips and x86
1795 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1796 */
1797#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1798 /* the costly errno access probably kills this for size optimisation */
1799
1800 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1801 ({ \
1802 long res; \
1803 register unsigned long r6 __asm__ ("r9" ); \
1804 register unsigned long r5 __asm__ ("r8" ); \
1805 register unsigned long r4 __asm__ ("r10"); \
1806 register unsigned long r3 __asm__ ("rdx"); \
1807 register unsigned long r2 __asm__ ("rsi"); \
1808 register unsigned long r1 __asm__ ("rdi"); \
1809 if (narg >= 6) r6 = (unsigned long)(arg6); \
1810 if (narg >= 5) r5 = (unsigned long)(arg5); \
1811 if (narg >= 4) r4 = (unsigned long)(arg4); \
1812 if (narg >= 3) r3 = (unsigned long)(arg3); \
1813 if (narg >= 2) r2 = (unsigned long)(arg2); \
1814 if (narg >= 1) r1 = (unsigned long)(arg1); \
1815 __asm__ __volatile__ ( \
1816 "syscall\n\t" \
1817 : "=a" (res) \
1818 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1819 : "cc", "r11", "cx", "memory"); \
1820 errno = -res; \
1821 res; \
1822 })
1823
1824#endif
1825
1826#ifdef ev_syscall
1827 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1828 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1829 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1830 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1831 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1832 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1833 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1834#else
1835 #define ev_syscall0(nr) syscall (nr)
1836 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1837 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1838 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1839 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1840 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1841 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1842#endif
1843
1844#endif
1845
1846/*****************************************************************************/
862 1847
863#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1848#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
864 1849
865#if EV_MINPRI == EV_MAXPRI 1850#if EV_MINPRI == EV_MAXPRI
866# define ABSPRI(w) (((W)w), 0) 1851# define ABSPRI(w) (((W)w), 0)
867#else 1852#else
868# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1853# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
869#endif 1854#endif
870 1855
871#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1856#define EMPTY /* required for microsofts broken pseudo-c compiler */
872#define EMPTY2(a,b) /* used to suppress some warnings */
873 1857
874typedef ev_watcher *W; 1858typedef ev_watcher *W;
875typedef ev_watcher_list *WL; 1859typedef ev_watcher_list *WL;
876typedef ev_watcher_time *WT; 1860typedef ev_watcher_time *WT;
877 1861
… …
902# include "ev_win32.c" 1886# include "ev_win32.c"
903#endif 1887#endif
904 1888
905/*****************************************************************************/ 1889/*****************************************************************************/
906 1890
1891#if EV_USE_LINUXAIO
1892# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1893#endif
1894
907/* define a suitable floor function (only used by periodics atm) */ 1895/* define a suitable floor function (only used by periodics atm) */
908 1896
909#if EV_USE_FLOOR 1897#if EV_USE_FLOOR
910# include <math.h> 1898# include <math.h>
911# define ev_floor(v) floor (v) 1899# define ev_floor(v) floor (v)
912#else 1900#else
913 1901
914#include <float.h> 1902#include <float.h>
915 1903
916/* a floor() replacement function, should be independent of ev_tstamp type */ 1904/* a floor() replacement function, should be independent of ev_tstamp type */
1905ecb_noinline
917static ev_tstamp noinline 1906static ev_tstamp
918ev_floor (ev_tstamp v) 1907ev_floor (ev_tstamp v)
919{ 1908{
920 /* the choice of shift factor is not terribly important */ 1909 /* the choice of shift factor is not terribly important */
921#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1910#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
922 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1911 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
923#else 1912#else
924 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1913 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
925#endif 1914#endif
926 1915
1916 /* special treatment for negative arguments */
1917 if (ecb_expect_false (v < 0.))
1918 {
1919 ev_tstamp f = -ev_floor (-v);
1920
1921 return f - (f == v ? 0 : 1);
1922 }
1923
927 /* argument too large for an unsigned long? */ 1924 /* argument too large for an unsigned long? then reduce it */
928 if (expect_false (v >= shift)) 1925 if (ecb_expect_false (v >= shift))
929 { 1926 {
930 ev_tstamp f; 1927 ev_tstamp f;
931 1928
932 if (v == v - 1.) 1929 if (v == v - 1.)
933 return v; /* very large number */ 1930 return v; /* very large numbers are assumed to be integer */
934 1931
935 f = shift * ev_floor (v * (1. / shift)); 1932 f = shift * ev_floor (v * (1. / shift));
936 return f + ev_floor (v - f); 1933 return f + ev_floor (v - f);
937 } 1934 }
938 1935
939 /* special treatment for negative args? */
940 if (expect_false (v < 0.))
941 {
942 ev_tstamp f = -ev_floor (-v);
943
944 return f - (f == v ? 0 : 1);
945 }
946
947 /* fits into an unsigned long */ 1936 /* fits into an unsigned long */
948 return (unsigned long)v; 1937 return (unsigned long)v;
949} 1938}
950 1939
951#endif 1940#endif
… …
954 1943
955#ifdef __linux 1944#ifdef __linux
956# include <sys/utsname.h> 1945# include <sys/utsname.h>
957#endif 1946#endif
958 1947
959static unsigned int noinline ecb_cold 1948ecb_noinline ecb_cold
1949static unsigned int
960ev_linux_version (void) 1950ev_linux_version (void)
961{ 1951{
962#ifdef __linux 1952#ifdef __linux
963 unsigned int v = 0; 1953 unsigned int v = 0;
964 struct utsname buf; 1954 struct utsname buf;
… …
993} 1983}
994 1984
995/*****************************************************************************/ 1985/*****************************************************************************/
996 1986
997#if EV_AVOID_STDIO 1987#if EV_AVOID_STDIO
998static void noinline ecb_cold 1988ecb_noinline ecb_cold
1989static void
999ev_printerr (const char *msg) 1990ev_printerr (const char *msg)
1000{ 1991{
1001 write (STDERR_FILENO, msg, strlen (msg)); 1992 write (STDERR_FILENO, msg, strlen (msg));
1002} 1993}
1003#endif 1994#endif
1004 1995
1005static void (*syserr_cb)(const char *msg); 1996static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1006 1997
1007void ecb_cold 1998ecb_cold
1999void
1008ev_set_syserr_cb (void (*cb)(const char *msg)) 2000ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1009{ 2001{
1010 syserr_cb = cb; 2002 syserr_cb = cb;
1011} 2003}
1012 2004
1013static void noinline ecb_cold 2005ecb_noinline ecb_cold
2006static void
1014ev_syserr (const char *msg) 2007ev_syserr (const char *msg)
1015{ 2008{
1016 if (!msg) 2009 if (!msg)
1017 msg = "(libev) system error"; 2010 msg = "(libev) system error";
1018 2011
… …
1031 abort (); 2024 abort ();
1032 } 2025 }
1033} 2026}
1034 2027
1035static void * 2028static void *
1036ev_realloc_emul (void *ptr, long size) 2029ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1037{ 2030{
1038#if __GLIBC__
1039 return realloc (ptr, size);
1040#else
1041 /* some systems, notably openbsd and darwin, fail to properly 2031 /* some systems, notably openbsd and darwin, fail to properly
1042 * implement realloc (x, 0) (as required by both ansi c-89 and 2032 * implement realloc (x, 0) (as required by both ansi c-89 and
1043 * the single unix specification, so work around them here. 2033 * the single unix specification, so work around them here.
2034 * recently, also (at least) fedora and debian started breaking it,
2035 * despite documenting it otherwise.
1044 */ 2036 */
1045 2037
1046 if (size) 2038 if (size)
1047 return realloc (ptr, size); 2039 return realloc (ptr, size);
1048 2040
1049 free (ptr); 2041 free (ptr);
1050 return 0; 2042 return 0;
1051#endif
1052} 2043}
1053 2044
1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2045static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1055 2046
1056void ecb_cold 2047ecb_cold
2048void
1057ev_set_allocator (void *(*cb)(void *ptr, long size)) 2049ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1058{ 2050{
1059 alloc = cb; 2051 alloc = cb;
1060} 2052}
1061 2053
1062inline_speed void * 2054inline_speed void *
… …
1089typedef struct 2081typedef struct
1090{ 2082{
1091 WL head; 2083 WL head;
1092 unsigned char events; /* the events watched for */ 2084 unsigned char events; /* the events watched for */
1093 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2085 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1094 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2086 unsigned char emask; /* some backends store the actual kernel mask in here */
1095 unsigned char unused; 2087 unsigned char eflags; /* flags field for use by backends */
1096#if EV_USE_EPOLL 2088#if EV_USE_EPOLL
1097 unsigned int egen; /* generation counter to counter epoll bugs */ 2089 unsigned int egen; /* generation counter to counter epoll bugs */
1098#endif 2090#endif
1099#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2091#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1100 SOCKET handle; 2092 SOCKET handle;
… …
1150 #undef VAR 2142 #undef VAR
1151 }; 2143 };
1152 #include "ev_wrap.h" 2144 #include "ev_wrap.h"
1153 2145
1154 static struct ev_loop default_loop_struct; 2146 static struct ev_loop default_loop_struct;
1155 struct ev_loop *ev_default_loop_ptr; 2147 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1156 2148
1157#else 2149#else
1158 2150
1159 ev_tstamp ev_rt_now; 2151 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1160 #define VAR(name,decl) static decl; 2152 #define VAR(name,decl) static decl;
1161 #include "ev_vars.h" 2153 #include "ev_vars.h"
1162 #undef VAR 2154 #undef VAR
1163 2155
1164 static int ev_default_loop_ptr; 2156 static int ev_default_loop_ptr;
1165 2157
1166#endif 2158#endif
1167 2159
1168#if EV_FEATURE_API 2160#if EV_FEATURE_API
1169# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2161# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1170# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2162# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1171# define EV_INVOKE_PENDING invoke_cb (EV_A) 2163# define EV_INVOKE_PENDING invoke_cb (EV_A)
1172#else 2164#else
1173# define EV_RELEASE_CB (void)0 2165# define EV_RELEASE_CB (void)0
1174# define EV_ACQUIRE_CB (void)0 2166# define EV_ACQUIRE_CB (void)0
1175# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2167# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1179 2171
1180/*****************************************************************************/ 2172/*****************************************************************************/
1181 2173
1182#ifndef EV_HAVE_EV_TIME 2174#ifndef EV_HAVE_EV_TIME
1183ev_tstamp 2175ev_tstamp
1184ev_time (void) 2176ev_time (void) EV_NOEXCEPT
1185{ 2177{
1186#if EV_USE_REALTIME 2178#if EV_USE_REALTIME
1187 if (expect_true (have_realtime)) 2179 if (ecb_expect_true (have_realtime))
1188 { 2180 {
1189 struct timespec ts; 2181 struct timespec ts;
1190 clock_gettime (CLOCK_REALTIME, &ts); 2182 clock_gettime (CLOCK_REALTIME, &ts);
1191 return ts.tv_sec + ts.tv_nsec * 1e-9; 2183 return EV_TS_GET (ts);
1192 } 2184 }
1193#endif 2185#endif
1194 2186
2187 {
1195 struct timeval tv; 2188 struct timeval tv;
1196 gettimeofday (&tv, 0); 2189 gettimeofday (&tv, 0);
1197 return tv.tv_sec + tv.tv_usec * 1e-6; 2190 return EV_TV_GET (tv);
2191 }
1198} 2192}
1199#endif 2193#endif
1200 2194
1201inline_size ev_tstamp 2195inline_size ev_tstamp
1202get_clock (void) 2196get_clock (void)
1203{ 2197{
1204#if EV_USE_MONOTONIC 2198#if EV_USE_MONOTONIC
1205 if (expect_true (have_monotonic)) 2199 if (ecb_expect_true (have_monotonic))
1206 { 2200 {
1207 struct timespec ts; 2201 struct timespec ts;
1208 clock_gettime (CLOCK_MONOTONIC, &ts); 2202 clock_gettime (CLOCK_MONOTONIC, &ts);
1209 return ts.tv_sec + ts.tv_nsec * 1e-9; 2203 return EV_TS_GET (ts);
1210 } 2204 }
1211#endif 2205#endif
1212 2206
1213 return ev_time (); 2207 return ev_time ();
1214} 2208}
1215 2209
1216#if EV_MULTIPLICITY 2210#if EV_MULTIPLICITY
1217ev_tstamp 2211ev_tstamp
1218ev_now (EV_P) 2212ev_now (EV_P) EV_NOEXCEPT
1219{ 2213{
1220 return ev_rt_now; 2214 return ev_rt_now;
1221} 2215}
1222#endif 2216#endif
1223 2217
1224void 2218void
1225ev_sleep (ev_tstamp delay) 2219ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1226{ 2220{
1227 if (delay > 0.) 2221 if (delay > EV_TS_CONST (0.))
1228 { 2222 {
1229#if EV_USE_NANOSLEEP 2223#if EV_USE_NANOSLEEP
1230 struct timespec ts; 2224 struct timespec ts;
1231 2225
1232 EV_TS_SET (ts, delay); 2226 EV_TS_SET (ts, delay);
1233 nanosleep (&ts, 0); 2227 nanosleep (&ts, 0);
1234#elif defined(_WIN32) 2228#elif defined _WIN32
2229 /* maybe this should round up, as ms is very low resolution */
2230 /* compared to select (µs) or nanosleep (ns) */
1235 Sleep ((unsigned long)(delay * 1e3)); 2231 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1236#else 2232#else
1237 struct timeval tv; 2233 struct timeval tv;
1238 2234
1239 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2235 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1240 /* something not guaranteed by newer posix versions, but guaranteed */ 2236 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1258 2254
1259 do 2255 do
1260 ncur <<= 1; 2256 ncur <<= 1;
1261 while (cnt > ncur); 2257 while (cnt > ncur);
1262 2258
1263 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2259 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1264 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2260 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1265 { 2261 {
1266 ncur *= elem; 2262 ncur *= elem;
1267 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2263 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1268 ncur = ncur - sizeof (void *) * 4; 2264 ncur = ncur - sizeof (void *) * 4;
… …
1270 } 2266 }
1271 2267
1272 return ncur; 2268 return ncur;
1273} 2269}
1274 2270
1275static void * noinline ecb_cold 2271ecb_noinline ecb_cold
2272static void *
1276array_realloc (int elem, void *base, int *cur, int cnt) 2273array_realloc (int elem, void *base, int *cur, int cnt)
1277{ 2274{
1278 *cur = array_nextsize (elem, *cur, cnt); 2275 *cur = array_nextsize (elem, *cur, cnt);
1279 return ev_realloc (base, elem * *cur); 2276 return ev_realloc (base, elem * *cur);
1280} 2277}
1281 2278
2279#define array_needsize_noinit(base,offset,count)
2280
1282#define array_init_zero(base,count) \ 2281#define array_needsize_zerofill(base,offset,count) \
1283 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2282 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1284 2283
1285#define array_needsize(type,base,cur,cnt,init) \ 2284#define array_needsize(type,base,cur,cnt,init) \
1286 if (expect_false ((cnt) > (cur))) \ 2285 if (ecb_expect_false ((cnt) > (cur))) \
1287 { \ 2286 { \
1288 int ecb_unused ocur_ = (cur); \ 2287 ecb_unused int ocur_ = (cur); \
1289 (base) = (type *)array_realloc \ 2288 (base) = (type *)array_realloc \
1290 (sizeof (type), (base), &(cur), (cnt)); \ 2289 (sizeof (type), (base), &(cur), (cnt)); \
1291 init ((base) + (ocur_), (cur) - ocur_); \ 2290 init ((base), ocur_, ((cur) - ocur_)); \
1292 } 2291 }
1293 2292
1294#if 0 2293#if 0
1295#define array_slim(type,stem) \ 2294#define array_slim(type,stem) \
1296 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2295 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1305 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1306 2305
1307/*****************************************************************************/ 2306/*****************************************************************************/
1308 2307
1309/* dummy callback for pending events */ 2308/* dummy callback for pending events */
1310static void noinline 2309ecb_noinline
2310static void
1311pendingcb (EV_P_ ev_prepare *w, int revents) 2311pendingcb (EV_P_ ev_prepare *w, int revents)
1312{ 2312{
1313} 2313}
1314 2314
1315void noinline 2315ecb_noinline
2316void
1316ev_feed_event (EV_P_ void *w, int revents) 2317ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1317{ 2318{
1318 W w_ = (W)w; 2319 W w_ = (W)w;
1319 int pri = ABSPRI (w_); 2320 int pri = ABSPRI (w_);
1320 2321
1321 if (expect_false (w_->pending)) 2322 if (ecb_expect_false (w_->pending))
1322 pendings [pri][w_->pending - 1].events |= revents; 2323 pendings [pri][w_->pending - 1].events |= revents;
1323 else 2324 else
1324 { 2325 {
1325 w_->pending = ++pendingcnt [pri]; 2326 w_->pending = ++pendingcnt [pri];
1326 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2327 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1327 pendings [pri][w_->pending - 1].w = w_; 2328 pendings [pri][w_->pending - 1].w = w_;
1328 pendings [pri][w_->pending - 1].events = revents; 2329 pendings [pri][w_->pending - 1].events = revents;
1329 } 2330 }
2331
2332 pendingpri = NUMPRI - 1;
1330} 2333}
1331 2334
1332inline_speed void 2335inline_speed void
1333feed_reverse (EV_P_ W w) 2336feed_reverse (EV_P_ W w)
1334{ 2337{
1335 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2338 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1336 rfeeds [rfeedcnt++] = w; 2339 rfeeds [rfeedcnt++] = w;
1337} 2340}
1338 2341
1339inline_size void 2342inline_size void
1340feed_reverse_done (EV_P_ int revents) 2343feed_reverse_done (EV_P_ int revents)
… …
1375inline_speed void 2378inline_speed void
1376fd_event (EV_P_ int fd, int revents) 2379fd_event (EV_P_ int fd, int revents)
1377{ 2380{
1378 ANFD *anfd = anfds + fd; 2381 ANFD *anfd = anfds + fd;
1379 2382
1380 if (expect_true (!anfd->reify)) 2383 if (ecb_expect_true (!anfd->reify))
1381 fd_event_nocheck (EV_A_ fd, revents); 2384 fd_event_nocheck (EV_A_ fd, revents);
1382} 2385}
1383 2386
1384void 2387void
1385ev_feed_fd_event (EV_P_ int fd, int revents) 2388ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1386{ 2389{
1387 if (fd >= 0 && fd < anfdmax) 2390 if (fd >= 0 && fd < anfdmax)
1388 fd_event_nocheck (EV_A_ fd, revents); 2391 fd_event_nocheck (EV_A_ fd, revents);
1389} 2392}
1390 2393
… …
1393inline_size void 2396inline_size void
1394fd_reify (EV_P) 2397fd_reify (EV_P)
1395{ 2398{
1396 int i; 2399 int i;
1397 2400
2401 /* most backends do not modify the fdchanges list in backend_modfiy.
2402 * except io_uring, which has fixed-size buffers which might force us
2403 * to handle events in backend_modify, causing fdchanges to be amended,
2404 * which could result in an endless loop.
2405 * to avoid this, we do not dynamically handle fds that were added
2406 * during fd_reify. that means that for those backends, fdchangecnt
2407 * might be non-zero during poll, which must cause them to not block.
2408 * to not put too much of a burden on other backends, this detail
2409 * needs to be handled in the backend.
2410 */
2411 int changecnt = fdchangecnt;
2412
1398#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2413#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1399 for (i = 0; i < fdchangecnt; ++i) 2414 for (i = 0; i < changecnt; ++i)
1400 { 2415 {
1401 int fd = fdchanges [i]; 2416 int fd = fdchanges [i];
1402 ANFD *anfd = anfds + fd; 2417 ANFD *anfd = anfds + fd;
1403 2418
1404 if (anfd->reify & EV__IOFDSET && anfd->head) 2419 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1418 } 2433 }
1419 } 2434 }
1420 } 2435 }
1421#endif 2436#endif
1422 2437
1423 for (i = 0; i < fdchangecnt; ++i) 2438 for (i = 0; i < changecnt; ++i)
1424 { 2439 {
1425 int fd = fdchanges [i]; 2440 int fd = fdchanges [i];
1426 ANFD *anfd = anfds + fd; 2441 ANFD *anfd = anfds + fd;
1427 ev_io *w; 2442 ev_io *w;
1428 2443
1429 unsigned char o_events = anfd->events; 2444 unsigned char o_events = anfd->events;
1430 unsigned char o_reify = anfd->reify; 2445 unsigned char o_reify = anfd->reify;
1431 2446
1432 anfd->reify = 0; 2447 anfd->reify = 0;
1433 2448
1434 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2449 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1435 { 2450 {
1436 anfd->events = 0; 2451 anfd->events = 0;
1437 2452
1438 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1439 anfd->events |= (unsigned char)w->events; 2454 anfd->events |= (unsigned char)w->events;
… …
1444 2459
1445 if (o_reify & EV__IOFDSET) 2460 if (o_reify & EV__IOFDSET)
1446 backend_modify (EV_A_ fd, o_events, anfd->events); 2461 backend_modify (EV_A_ fd, o_events, anfd->events);
1447 } 2462 }
1448 2463
2464 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2465 * this is a rare case (see beginning comment in this function), so we copy them to the
2466 * front and hope the backend handles this case.
2467 */
2468 if (ecb_expect_false (fdchangecnt != changecnt))
2469 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2470
1449 fdchangecnt = 0; 2471 fdchangecnt -= changecnt;
1450} 2472}
1451 2473
1452/* something about the given fd changed */ 2474/* something about the given fd changed */
1453inline_size void 2475inline_size
2476void
1454fd_change (EV_P_ int fd, int flags) 2477fd_change (EV_P_ int fd, int flags)
1455{ 2478{
1456 unsigned char reify = anfds [fd].reify; 2479 unsigned char reify = anfds [fd].reify;
1457 anfds [fd].reify |= flags; 2480 anfds [fd].reify = reify | flags;
1458 2481
1459 if (expect_true (!reify)) 2482 if (ecb_expect_true (!reify))
1460 { 2483 {
1461 ++fdchangecnt; 2484 ++fdchangecnt;
1462 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1463 fdchanges [fdchangecnt - 1] = fd; 2486 fdchanges [fdchangecnt - 1] = fd;
1464 } 2487 }
1465} 2488}
1466 2489
1467/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2490/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1468inline_speed void ecb_cold 2491inline_speed ecb_cold void
1469fd_kill (EV_P_ int fd) 2492fd_kill (EV_P_ int fd)
1470{ 2493{
1471 ev_io *w; 2494 ev_io *w;
1472 2495
1473 while ((w = (ev_io *)anfds [fd].head)) 2496 while ((w = (ev_io *)anfds [fd].head))
… …
1476 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2499 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1477 } 2500 }
1478} 2501}
1479 2502
1480/* check whether the given fd is actually valid, for error recovery */ 2503/* check whether the given fd is actually valid, for error recovery */
1481inline_size int ecb_cold 2504inline_size ecb_cold int
1482fd_valid (int fd) 2505fd_valid (int fd)
1483{ 2506{
1484#ifdef _WIN32 2507#ifdef _WIN32
1485 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2508 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1486#else 2509#else
1487 return fcntl (fd, F_GETFD) != -1; 2510 return fcntl (fd, F_GETFD) != -1;
1488#endif 2511#endif
1489} 2512}
1490 2513
1491/* called on EBADF to verify fds */ 2514/* called on EBADF to verify fds */
1492static void noinline ecb_cold 2515ecb_noinline ecb_cold
2516static void
1493fd_ebadf (EV_P) 2517fd_ebadf (EV_P)
1494{ 2518{
1495 int fd; 2519 int fd;
1496 2520
1497 for (fd = 0; fd < anfdmax; ++fd) 2521 for (fd = 0; fd < anfdmax; ++fd)
… …
1499 if (!fd_valid (fd) && errno == EBADF) 2523 if (!fd_valid (fd) && errno == EBADF)
1500 fd_kill (EV_A_ fd); 2524 fd_kill (EV_A_ fd);
1501} 2525}
1502 2526
1503/* called on ENOMEM in select/poll to kill some fds and retry */ 2527/* called on ENOMEM in select/poll to kill some fds and retry */
1504static void noinline ecb_cold 2528ecb_noinline ecb_cold
2529static void
1505fd_enomem (EV_P) 2530fd_enomem (EV_P)
1506{ 2531{
1507 int fd; 2532 int fd;
1508 2533
1509 for (fd = anfdmax; fd--; ) 2534 for (fd = anfdmax; fd--; )
… …
1513 break; 2538 break;
1514 } 2539 }
1515} 2540}
1516 2541
1517/* usually called after fork if backend needs to re-arm all fds from scratch */ 2542/* usually called after fork if backend needs to re-arm all fds from scratch */
1518static void noinline 2543ecb_noinline
2544static void
1519fd_rearm_all (EV_P) 2545fd_rearm_all (EV_P)
1520{ 2546{
1521 int fd; 2547 int fd;
1522 2548
1523 for (fd = 0; fd < anfdmax; ++fd) 2549 for (fd = 0; fd < anfdmax; ++fd)
… …
1576 ev_tstamp minat; 2602 ev_tstamp minat;
1577 ANHE *minpos; 2603 ANHE *minpos;
1578 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2604 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1579 2605
1580 /* find minimum child */ 2606 /* find minimum child */
1581 if (expect_true (pos + DHEAP - 1 < E)) 2607 if (ecb_expect_true (pos + DHEAP - 1 < E))
1582 { 2608 {
1583 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2609 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1584 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2610 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1585 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2611 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1586 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2612 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1587 } 2613 }
1588 else if (pos < E) 2614 else if (pos < E)
1589 { 2615 {
1590 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2616 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1591 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2617 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1592 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2618 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1593 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2619 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1594 } 2620 }
1595 else 2621 else
1596 break; 2622 break;
1597 2623
1598 if (ANHE_at (he) <= minat) 2624 if (ANHE_at (he) <= minat)
… …
1606 2632
1607 heap [k] = he; 2633 heap [k] = he;
1608 ev_active (ANHE_w (he)) = k; 2634 ev_active (ANHE_w (he)) = k;
1609} 2635}
1610 2636
1611#else /* 4HEAP */ 2637#else /* not 4HEAP */
1612 2638
1613#define HEAP0 1 2639#define HEAP0 1
1614#define HPARENT(k) ((k) >> 1) 2640#define HPARENT(k) ((k) >> 1)
1615#define UPHEAP_DONE(p,k) (!(p)) 2641#define UPHEAP_DONE(p,k) (!(p))
1616 2642
… …
1688 upheap (heap, i + HEAP0); 2714 upheap (heap, i + HEAP0);
1689} 2715}
1690 2716
1691/*****************************************************************************/ 2717/*****************************************************************************/
1692 2718
1693/* associate signal watchers to a signal signal */ 2719/* associate signal watchers to a signal */
1694typedef struct 2720typedef struct
1695{ 2721{
1696 EV_ATOMIC_T pending; 2722 EV_ATOMIC_T pending;
1697#if EV_MULTIPLICITY 2723#if EV_MULTIPLICITY
1698 EV_P; 2724 EV_P;
… …
1704 2730
1705/*****************************************************************************/ 2731/*****************************************************************************/
1706 2732
1707#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2733#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1708 2734
1709static void noinline ecb_cold 2735ecb_noinline ecb_cold
2736static void
1710evpipe_init (EV_P) 2737evpipe_init (EV_P)
1711{ 2738{
1712 if (!ev_is_active (&pipe_w)) 2739 if (!ev_is_active (&pipe_w))
1713 { 2740 {
2741 int fds [2];
2742
1714# if EV_USE_EVENTFD 2743# if EV_USE_EVENTFD
2744 fds [0] = -1;
1715 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2745 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1716 if (evfd < 0 && errno == EINVAL) 2746 if (fds [1] < 0 && errno == EINVAL)
1717 evfd = eventfd (0, 0); 2747 fds [1] = eventfd (0, 0);
1718 2748
1719 if (evfd >= 0) 2749 if (fds [1] < 0)
2750# endif
1720 { 2751 {
2752 while (pipe (fds))
2753 ev_syserr ("(libev) error creating signal/async pipe");
2754
2755 fd_intern (fds [0]);
2756 }
2757
1721 evpipe [0] = -1; 2758 evpipe [0] = fds [0];
1722 fd_intern (evfd); /* doing it twice doesn't hurt */ 2759
1723 ev_io_set (&pipe_w, evfd, EV_READ); 2760 if (evpipe [1] < 0)
2761 evpipe [1] = fds [1]; /* first call, set write fd */
2762 else
2763 {
2764 /* on subsequent calls, do not change evpipe [1] */
2765 /* so that evpipe_write can always rely on its value. */
2766 /* this branch does not do anything sensible on windows, */
2767 /* so must not be executed on windows */
2768
2769 dup2 (fds [1], evpipe [1]);
2770 close (fds [1]);
2771 }
2772
2773 fd_intern (evpipe [1]);
2774
2775 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2776 ev_io_start (EV_A_ &pipe_w);
2777 ev_unref (EV_A); /* watcher should not keep loop alive */
2778 }
2779}
2780
2781inline_speed void
2782evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2783{
2784 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2785
2786 if (ecb_expect_true (*flag))
2787 return;
2788
2789 *flag = 1;
2790 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2791
2792 pipe_write_skipped = 1;
2793
2794 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2795
2796 if (pipe_write_wanted)
2797 {
2798 int old_errno;
2799
2800 pipe_write_skipped = 0;
2801 ECB_MEMORY_FENCE_RELEASE;
2802
2803 old_errno = errno; /* save errno because write will clobber it */
2804
2805#if EV_USE_EVENTFD
2806 if (evpipe [0] < 0)
2807 {
2808 uint64_t counter = 1;
2809 write (evpipe [1], &counter, sizeof (uint64_t));
1724 } 2810 }
1725 else 2811 else
1726# endif 2812#endif
1727 { 2813 {
1728 while (pipe (evpipe)) 2814#ifdef _WIN32
1729 ev_syserr ("(libev) error creating signal/async pipe"); 2815 WSABUF buf;
1730 2816 DWORD sent;
1731 fd_intern (evpipe [0]); 2817 buf.buf = (char *)&buf;
1732 fd_intern (evpipe [1]); 2818 buf.len = 1;
1733 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2819 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1734 } 2820#else
1735
1736 ev_io_start (EV_A_ &pipe_w);
1737 ev_unref (EV_A); /* watcher should not keep loop alive */
1738 }
1739}
1740
1741inline_speed void
1742evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1743{
1744 if (expect_true (*flag))
1745 return;
1746
1747 *flag = 1;
1748
1749 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1750
1751 pipe_write_skipped = 1;
1752
1753 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1754
1755 if (pipe_write_wanted)
1756 {
1757 int old_errno;
1758
1759 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1760
1761 old_errno = errno; /* save errno because write will clobber it */
1762
1763#if EV_USE_EVENTFD
1764 if (evfd >= 0)
1765 {
1766 uint64_t counter = 1;
1767 write (evfd, &counter, sizeof (uint64_t));
1768 }
1769 else
1770#endif
1771 {
1772 /* win32 people keep sending patches that change this write() to send() */
1773 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1774 /* so when you think this write should be a send instead, please find out */
1775 /* where your send() is from - it's definitely not the microsoft send, and */
1776 /* tell me. thank you. */
1777 write (evpipe [1], &(evpipe [1]), 1); 2821 write (evpipe [1], &(evpipe [1]), 1);
2822#endif
1778 } 2823 }
1779 2824
1780 errno = old_errno; 2825 errno = old_errno;
1781 } 2826 }
1782} 2827}
… …
1789 int i; 2834 int i;
1790 2835
1791 if (revents & EV_READ) 2836 if (revents & EV_READ)
1792 { 2837 {
1793#if EV_USE_EVENTFD 2838#if EV_USE_EVENTFD
1794 if (evfd >= 0) 2839 if (evpipe [0] < 0)
1795 { 2840 {
1796 uint64_t counter; 2841 uint64_t counter;
1797 read (evfd, &counter, sizeof (uint64_t)); 2842 read (evpipe [1], &counter, sizeof (uint64_t));
1798 } 2843 }
1799 else 2844 else
1800#endif 2845#endif
1801 { 2846 {
1802 char dummy; 2847 char dummy[4];
1803 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2848#ifdef _WIN32
2849 WSABUF buf;
2850 DWORD recvd;
2851 DWORD flags = 0;
2852 buf.buf = dummy;
2853 buf.len = sizeof (dummy);
2854 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2855#else
1804 read (evpipe [0], &dummy, 1); 2856 read (evpipe [0], &dummy, sizeof (dummy));
2857#endif
1805 } 2858 }
1806 } 2859 }
1807 2860
1808 pipe_write_skipped = 0; 2861 pipe_write_skipped = 0;
2862
2863 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1809 2864
1810#if EV_SIGNAL_ENABLE 2865#if EV_SIGNAL_ENABLE
1811 if (sig_pending) 2866 if (sig_pending)
1812 { 2867 {
1813 sig_pending = 0; 2868 sig_pending = 0;
1814 2869
2870 ECB_MEMORY_FENCE;
2871
1815 for (i = EV_NSIG - 1; i--; ) 2872 for (i = EV_NSIG - 1; i--; )
1816 if (expect_false (signals [i].pending)) 2873 if (ecb_expect_false (signals [i].pending))
1817 ev_feed_signal_event (EV_A_ i + 1); 2874 ev_feed_signal_event (EV_A_ i + 1);
1818 } 2875 }
1819#endif 2876#endif
1820 2877
1821#if EV_ASYNC_ENABLE 2878#if EV_ASYNC_ENABLE
1822 if (async_pending) 2879 if (async_pending)
1823 { 2880 {
1824 async_pending = 0; 2881 async_pending = 0;
2882
2883 ECB_MEMORY_FENCE;
1825 2884
1826 for (i = asynccnt; i--; ) 2885 for (i = asynccnt; i--; )
1827 if (asyncs [i]->sent) 2886 if (asyncs [i]->sent)
1828 { 2887 {
1829 asyncs [i]->sent = 0; 2888 asyncs [i]->sent = 0;
2889 ECB_MEMORY_FENCE_RELEASE;
1830 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2890 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1831 } 2891 }
1832 } 2892 }
1833#endif 2893#endif
1834} 2894}
1835 2895
1836/*****************************************************************************/ 2896/*****************************************************************************/
1837 2897
1838void 2898void
1839ev_feed_signal (int signum) 2899ev_feed_signal (int signum) EV_NOEXCEPT
1840{ 2900{
1841#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
2902 EV_P;
2903 ECB_MEMORY_FENCE_ACQUIRE;
1842 EV_P = signals [signum - 1].loop; 2904 EV_A = signals [signum - 1].loop;
1843 2905
1844 if (!EV_A) 2906 if (!EV_A)
1845 return; 2907 return;
1846#endif 2908#endif
1847 2909
1848 if (!ev_active (&pipe_w))
1849 return;
1850
1851 signals [signum - 1].pending = 1; 2910 signals [signum - 1].pending = 1;
1852 evpipe_write (EV_A_ &sig_pending); 2911 evpipe_write (EV_A_ &sig_pending);
1853} 2912}
1854 2913
1855static void 2914static void
… …
1860#endif 2919#endif
1861 2920
1862 ev_feed_signal (signum); 2921 ev_feed_signal (signum);
1863} 2922}
1864 2923
1865void noinline 2924ecb_noinline
2925void
1866ev_feed_signal_event (EV_P_ int signum) 2926ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1867{ 2927{
1868 WL w; 2928 WL w;
1869 2929
1870 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2930 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1871 return; 2931 return;
1872 2932
1873 --signum; 2933 --signum;
1874 2934
1875#if EV_MULTIPLICITY 2935#if EV_MULTIPLICITY
1876 /* it is permissible to try to feed a signal to the wrong loop */ 2936 /* it is permissible to try to feed a signal to the wrong loop */
1877 /* or, likely more useful, feeding a signal nobody is waiting for */ 2937 /* or, likely more useful, feeding a signal nobody is waiting for */
1878 2938
1879 if (expect_false (signals [signum].loop != EV_A)) 2939 if (ecb_expect_false (signals [signum].loop != EV_A))
1880 return; 2940 return;
1881#endif 2941#endif
1882 2942
1883 signals [signum].pending = 0; 2943 signals [signum].pending = 0;
2944 ECB_MEMORY_FENCE_RELEASE;
1884 2945
1885 for (w = signals [signum].head; w; w = w->next) 2946 for (w = signals [signum].head; w; w = w->next)
1886 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2947 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1887} 2948}
1888 2949
… …
1967 3028
1968#endif 3029#endif
1969 3030
1970/*****************************************************************************/ 3031/*****************************************************************************/
1971 3032
3033#if EV_USE_TIMERFD
3034
3035static void periodics_reschedule (EV_P);
3036
3037static void
3038timerfdcb (EV_P_ ev_io *iow, int revents)
3039{
3040 struct itimerspec its = { 0 };
3041
3042 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3043 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3044
3045 ev_rt_now = ev_time ();
3046 /* periodics_reschedule only needs ev_rt_now */
3047 /* but maybe in the future we want the full treatment. */
3048 /*
3049 now_floor = EV_TS_CONST (0.);
3050 time_update (EV_A_ EV_TSTAMP_HUGE);
3051 */
3052#if EV_PERIODIC_ENABLE
3053 periodics_reschedule (EV_A);
3054#endif
3055}
3056
3057ecb_noinline ecb_cold
3058static void
3059evtimerfd_init (EV_P)
3060{
3061 if (!ev_is_active (&timerfd_w))
3062 {
3063 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3064
3065 if (timerfd >= 0)
3066 {
3067 fd_intern (timerfd); /* just to be sure */
3068
3069 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3070 ev_set_priority (&timerfd_w, EV_MINPRI);
3071 ev_io_start (EV_A_ &timerfd_w);
3072 ev_unref (EV_A); /* watcher should not keep loop alive */
3073
3074 /* (re-) arm timer */
3075 timerfdcb (EV_A_ 0, 0);
3076 }
3077 }
3078}
3079
3080#endif
3081
3082/*****************************************************************************/
3083
1972#if EV_USE_IOCP 3084#if EV_USE_IOCP
1973# include "ev_iocp.c" 3085# include "ev_iocp.c"
1974#endif 3086#endif
1975#if EV_USE_PORT 3087#if EV_USE_PORT
1976# include "ev_port.c" 3088# include "ev_port.c"
… …
1979# include "ev_kqueue.c" 3091# include "ev_kqueue.c"
1980#endif 3092#endif
1981#if EV_USE_EPOLL 3093#if EV_USE_EPOLL
1982# include "ev_epoll.c" 3094# include "ev_epoll.c"
1983#endif 3095#endif
3096#if EV_USE_LINUXAIO
3097# include "ev_linuxaio.c"
3098#endif
3099#if EV_USE_IOURING
3100# include "ev_iouring.c"
3101#endif
1984#if EV_USE_POLL 3102#if EV_USE_POLL
1985# include "ev_poll.c" 3103# include "ev_poll.c"
1986#endif 3104#endif
1987#if EV_USE_SELECT 3105#if EV_USE_SELECT
1988# include "ev_select.c" 3106# include "ev_select.c"
1989#endif 3107#endif
1990 3108
1991int ecb_cold 3109ecb_cold int
1992ev_version_major (void) 3110ev_version_major (void) EV_NOEXCEPT
1993{ 3111{
1994 return EV_VERSION_MAJOR; 3112 return EV_VERSION_MAJOR;
1995} 3113}
1996 3114
1997int ecb_cold 3115ecb_cold int
1998ev_version_minor (void) 3116ev_version_minor (void) EV_NOEXCEPT
1999{ 3117{
2000 return EV_VERSION_MINOR; 3118 return EV_VERSION_MINOR;
2001} 3119}
2002 3120
2003/* return true if we are running with elevated privileges and should ignore env variables */ 3121/* return true if we are running with elevated privileges and should ignore env variables */
2004int inline_size ecb_cold 3122inline_size ecb_cold int
2005enable_secure (void) 3123enable_secure (void)
2006{ 3124{
2007#ifdef _WIN32 3125#ifdef _WIN32
2008 return 0; 3126 return 0;
2009#else 3127#else
2010 return getuid () != geteuid () 3128 return getuid () != geteuid ()
2011 || getgid () != getegid (); 3129 || getgid () != getegid ();
2012#endif 3130#endif
2013} 3131}
2014 3132
2015unsigned int ecb_cold 3133ecb_cold
3134unsigned int
2016ev_supported_backends (void) 3135ev_supported_backends (void) EV_NOEXCEPT
2017{ 3136{
2018 unsigned int flags = 0; 3137 unsigned int flags = 0;
2019 3138
2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3139 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2021 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3140 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2022 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3141 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2023 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3142 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2024 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3143 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2025 3144 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3145 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3146
2026 return flags; 3147 return flags;
2027} 3148}
2028 3149
2029unsigned int ecb_cold 3150ecb_cold
3151unsigned int
2030ev_recommended_backends (void) 3152ev_recommended_backends (void) EV_NOEXCEPT
2031{ 3153{
2032 unsigned int flags = ev_supported_backends (); 3154 unsigned int flags = ev_supported_backends ();
2033 3155
2034#ifndef __NetBSD__ 3156#ifndef __NetBSD__
2035 /* kqueue is borked on everything but netbsd apparently */ 3157 /* kqueue is borked on everything but netbsd apparently */
… …
2043#endif 3165#endif
2044#ifdef __FreeBSD__ 3166#ifdef __FreeBSD__
2045 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3167 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2046#endif 3168#endif
2047 3169
3170 /* TODO: linuxaio is very experimental */
3171#if !EV_RECOMMEND_LINUXAIO
3172 flags &= ~EVBACKEND_LINUXAIO;
3173#endif
3174 /* TODO: iouring is super experimental */
3175#if !EV_RECOMMEND_IOURING
3176 flags &= ~EVBACKEND_IOURING;
3177#endif
3178
2048 return flags; 3179 return flags;
2049} 3180}
2050 3181
2051unsigned int ecb_cold 3182ecb_cold
3183unsigned int
2052ev_embeddable_backends (void) 3184ev_embeddable_backends (void) EV_NOEXCEPT
2053{ 3185{
2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3186 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2055 3187
2056 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3188 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2057 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3189 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2058 flags &= ~EVBACKEND_EPOLL; 3190 flags &= ~EVBACKEND_EPOLL;
2059 3191
3192 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3193
2060 return flags; 3194 return flags;
2061} 3195}
2062 3196
2063unsigned int 3197unsigned int
2064ev_backend (EV_P) 3198ev_backend (EV_P) EV_NOEXCEPT
2065{ 3199{
2066 return backend; 3200 return backend;
2067} 3201}
2068 3202
2069#if EV_FEATURE_API 3203#if EV_FEATURE_API
2070unsigned int 3204unsigned int
2071ev_iteration (EV_P) 3205ev_iteration (EV_P) EV_NOEXCEPT
2072{ 3206{
2073 return loop_count; 3207 return loop_count;
2074} 3208}
2075 3209
2076unsigned int 3210unsigned int
2077ev_depth (EV_P) 3211ev_depth (EV_P) EV_NOEXCEPT
2078{ 3212{
2079 return loop_depth; 3213 return loop_depth;
2080} 3214}
2081 3215
2082void 3216void
2083ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3217ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2084{ 3218{
2085 io_blocktime = interval; 3219 io_blocktime = interval;
2086} 3220}
2087 3221
2088void 3222void
2089ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3223ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2090{ 3224{
2091 timeout_blocktime = interval; 3225 timeout_blocktime = interval;
2092} 3226}
2093 3227
2094void 3228void
2095ev_set_userdata (EV_P_ void *data) 3229ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2096{ 3230{
2097 userdata = data; 3231 userdata = data;
2098} 3232}
2099 3233
2100void * 3234void *
2101ev_userdata (EV_P) 3235ev_userdata (EV_P) EV_NOEXCEPT
2102{ 3236{
2103 return userdata; 3237 return userdata;
2104} 3238}
2105 3239
2106void 3240void
2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3241ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2108{ 3242{
2109 invoke_cb = invoke_pending_cb; 3243 invoke_cb = invoke_pending_cb;
2110} 3244}
2111 3245
2112void 3246void
2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3247ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2114{ 3248{
2115 release_cb = release; 3249 release_cb = release;
2116 acquire_cb = acquire; 3250 acquire_cb = acquire;
2117} 3251}
2118#endif 3252#endif
2119 3253
2120/* initialise a loop structure, must be zero-initialised */ 3254/* initialise a loop structure, must be zero-initialised */
2121static void noinline ecb_cold 3255ecb_noinline ecb_cold
3256static void
2122loop_init (EV_P_ unsigned int flags) 3257loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2123{ 3258{
2124 if (!backend) 3259 if (!backend)
2125 { 3260 {
2126 origflags = flags; 3261 origflags = flags;
2127 3262
… …
2172#if EV_ASYNC_ENABLE 3307#if EV_ASYNC_ENABLE
2173 async_pending = 0; 3308 async_pending = 0;
2174#endif 3309#endif
2175 pipe_write_skipped = 0; 3310 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0; 3311 pipe_write_wanted = 0;
3312 evpipe [0] = -1;
3313 evpipe [1] = -1;
2177#if EV_USE_INOTIFY 3314#if EV_USE_INOTIFY
2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3315 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2179#endif 3316#endif
2180#if EV_USE_SIGNALFD 3317#if EV_USE_SIGNALFD
2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3318 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2182#endif 3319#endif
3320#if EV_USE_TIMERFD
3321 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3322#endif
2183 3323
2184 if (!(flags & EVBACKEND_MASK)) 3324 if (!(flags & EVBACKEND_MASK))
2185 flags |= ev_recommended_backends (); 3325 flags |= ev_recommended_backends ();
2186 3326
2187#if EV_USE_IOCP 3327#if EV_USE_IOCP
2188 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2189#endif 3329#endif
2190#if EV_USE_PORT 3330#if EV_USE_PORT
2191 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2192#endif 3332#endif
2193#if EV_USE_KQUEUE 3333#if EV_USE_KQUEUE
2194 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3334 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3335#endif
3336#if EV_USE_IOURING
3337 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3338#endif
3339#if EV_USE_LINUXAIO
3340 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2195#endif 3341#endif
2196#if EV_USE_EPOLL 3342#if EV_USE_EPOLL
2197 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2198#endif 3344#endif
2199#if EV_USE_POLL 3345#if EV_USE_POLL
2200 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3346 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2201#endif 3347#endif
2202#if EV_USE_SELECT 3348#if EV_USE_SELECT
2203 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3349 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2204#endif 3350#endif
2205 3351
2206 ev_prepare_init (&pending_w, pendingcb); 3352 ev_prepare_init (&pending_w, pendingcb);
2207 3353
2208#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3354#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2211#endif 3357#endif
2212 } 3358 }
2213} 3359}
2214 3360
2215/* free up a loop structure */ 3361/* free up a loop structure */
2216void ecb_cold 3362ecb_cold
3363void
2217ev_loop_destroy (EV_P) 3364ev_loop_destroy (EV_P)
2218{ 3365{
2219 int i; 3366 int i;
2220 3367
2221#if EV_MULTIPLICITY 3368#if EV_MULTIPLICITY
… …
2224 return; 3371 return;
2225#endif 3372#endif
2226 3373
2227#if EV_CLEANUP_ENABLE 3374#if EV_CLEANUP_ENABLE
2228 /* queue cleanup watchers (and execute them) */ 3375 /* queue cleanup watchers (and execute them) */
2229 if (expect_false (cleanupcnt)) 3376 if (ecb_expect_false (cleanupcnt))
2230 { 3377 {
2231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3378 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2232 EV_INVOKE_PENDING; 3379 EV_INVOKE_PENDING;
2233 } 3380 }
2234#endif 3381#endif
2235 3382
2236#if EV_CHILD_ENABLE 3383#if EV_CHILD_ENABLE
2237 if (ev_is_active (&childev)) 3384 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2238 { 3385 {
2239 ev_ref (EV_A); /* child watcher */ 3386 ev_ref (EV_A); /* child watcher */
2240 ev_signal_stop (EV_A_ &childev); 3387 ev_signal_stop (EV_A_ &childev);
2241 } 3388 }
2242#endif 3389#endif
… …
2244 if (ev_is_active (&pipe_w)) 3391 if (ev_is_active (&pipe_w))
2245 { 3392 {
2246 /*ev_ref (EV_A);*/ 3393 /*ev_ref (EV_A);*/
2247 /*ev_io_stop (EV_A_ &pipe_w);*/ 3394 /*ev_io_stop (EV_A_ &pipe_w);*/
2248 3395
2249#if EV_USE_EVENTFD
2250 if (evfd >= 0)
2251 close (evfd);
2252#endif
2253
2254 if (evpipe [0] >= 0)
2255 {
2256 EV_WIN32_CLOSE_FD (evpipe [0]); 3396 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2257 EV_WIN32_CLOSE_FD (evpipe [1]); 3397 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2258 }
2259 } 3398 }
2260 3399
2261#if EV_USE_SIGNALFD 3400#if EV_USE_SIGNALFD
2262 if (ev_is_active (&sigfd_w)) 3401 if (ev_is_active (&sigfd_w))
2263 close (sigfd); 3402 close (sigfd);
2264#endif 3403#endif
2265 3404
3405#if EV_USE_TIMERFD
3406 if (ev_is_active (&timerfd_w))
3407 close (timerfd);
3408#endif
3409
2266#if EV_USE_INOTIFY 3410#if EV_USE_INOTIFY
2267 if (fs_fd >= 0) 3411 if (fs_fd >= 0)
2268 close (fs_fd); 3412 close (fs_fd);
2269#endif 3413#endif
2270 3414
2271 if (backend_fd >= 0) 3415 if (backend_fd >= 0)
2272 close (backend_fd); 3416 close (backend_fd);
2273 3417
2274#if EV_USE_IOCP 3418#if EV_USE_IOCP
2275 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3419 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2276#endif 3420#endif
2277#if EV_USE_PORT 3421#if EV_USE_PORT
2278 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3422 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2279#endif 3423#endif
2280#if EV_USE_KQUEUE 3424#if EV_USE_KQUEUE
2281 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3425 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3426#endif
3427#if EV_USE_IOURING
3428 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3429#endif
3430#if EV_USE_LINUXAIO
3431 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2282#endif 3432#endif
2283#if EV_USE_EPOLL 3433#if EV_USE_EPOLL
2284 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3434 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2285#endif 3435#endif
2286#if EV_USE_POLL 3436#if EV_USE_POLL
2287 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3437 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2288#endif 3438#endif
2289#if EV_USE_SELECT 3439#if EV_USE_SELECT
2290 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3440 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2291#endif 3441#endif
2292 3442
2293 for (i = NUMPRI; i--; ) 3443 for (i = NUMPRI; i--; )
2294 { 3444 {
2295 array_free (pending, [i]); 3445 array_free (pending, [i]);
… …
2337 3487
2338inline_size void 3488inline_size void
2339loop_fork (EV_P) 3489loop_fork (EV_P)
2340{ 3490{
2341#if EV_USE_PORT 3491#if EV_USE_PORT
2342 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3492 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2343#endif 3493#endif
2344#if EV_USE_KQUEUE 3494#if EV_USE_KQUEUE
2345 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3495 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3496#endif
3497#if EV_USE_IOURING
3498 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3499#endif
3500#if EV_USE_LINUXAIO
3501 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2346#endif 3502#endif
2347#if EV_USE_EPOLL 3503#if EV_USE_EPOLL
2348 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3504 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2349#endif 3505#endif
2350#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
2351 infy_fork (EV_A); 3507 infy_fork (EV_A);
2352#endif 3508#endif
2353 3509
3510 if (postfork != 2)
3511 {
3512 #if EV_USE_SIGNALFD
3513 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3514 #endif
3515
3516 #if EV_USE_TIMERFD
3517 if (ev_is_active (&timerfd_w))
3518 {
3519 ev_ref (EV_A);
3520 ev_io_stop (EV_A_ &timerfd_w);
3521
3522 close (timerfd);
3523 timerfd = -2;
3524
3525 evtimerfd_init (EV_A);
3526 /* reschedule periodics, in case we missed something */
3527 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3528 }
3529 #endif
3530
3531 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2354 if (ev_is_active (&pipe_w)) 3532 if (ev_is_active (&pipe_w))
2355 { 3533 {
2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2357 3535
2358 ev_ref (EV_A); 3536 ev_ref (EV_A);
2359 ev_io_stop (EV_A_ &pipe_w); 3537 ev_io_stop (EV_A_ &pipe_w);
2360 3538
2361#if EV_USE_EVENTFD
2362 if (evfd >= 0)
2363 close (evfd);
2364#endif
2365
2366 if (evpipe [0] >= 0) 3539 if (evpipe [0] >= 0)
2367 {
2368 EV_WIN32_CLOSE_FD (evpipe [0]); 3540 EV_WIN32_CLOSE_FD (evpipe [0]);
2369 EV_WIN32_CLOSE_FD (evpipe [1]); 3541
3542 evpipe_init (EV_A);
3543 /* iterate over everything, in case we missed something before */
3544 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2370 } 3545 }
2371 3546 #endif
2372#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2373 evpipe_init (EV_A);
2374 /* now iterate over everything, in case we missed something */
2375 pipecb (EV_A_ &pipe_w, EV_READ);
2376#endif
2377 } 3547 }
2378 3548
2379 postfork = 0; 3549 postfork = 0;
2380} 3550}
2381 3551
2382#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
2383 3553
3554ecb_cold
2384struct ev_loop * ecb_cold 3555struct ev_loop *
2385ev_loop_new (unsigned int flags) 3556ev_loop_new (unsigned int flags) EV_NOEXCEPT
2386{ 3557{
2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3558 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2388 3559
2389 memset (EV_A, 0, sizeof (struct ev_loop)); 3560 memset (EV_A, 0, sizeof (struct ev_loop));
2390 loop_init (EV_A_ flags); 3561 loop_init (EV_A_ flags);
… …
2397} 3568}
2398 3569
2399#endif /* multiplicity */ 3570#endif /* multiplicity */
2400 3571
2401#if EV_VERIFY 3572#if EV_VERIFY
2402static void noinline ecb_cold 3573ecb_noinline ecb_cold
3574static void
2403verify_watcher (EV_P_ W w) 3575verify_watcher (EV_P_ W w)
2404{ 3576{
2405 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3577 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2406 3578
2407 if (w->pending) 3579 if (w->pending)
2408 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3580 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2409} 3581}
2410 3582
2411static void noinline ecb_cold 3583ecb_noinline ecb_cold
3584static void
2412verify_heap (EV_P_ ANHE *heap, int N) 3585verify_heap (EV_P_ ANHE *heap, int N)
2413{ 3586{
2414 int i; 3587 int i;
2415 3588
2416 for (i = HEAP0; i < N + HEAP0; ++i) 3589 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2421 3594
2422 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3595 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2423 } 3596 }
2424} 3597}
2425 3598
2426static void noinline ecb_cold 3599ecb_noinline ecb_cold
3600static void
2427array_verify (EV_P_ W *ws, int cnt) 3601array_verify (EV_P_ W *ws, int cnt)
2428{ 3602{
2429 while (cnt--) 3603 while (cnt--)
2430 { 3604 {
2431 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3605 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2434} 3608}
2435#endif 3609#endif
2436 3610
2437#if EV_FEATURE_API 3611#if EV_FEATURE_API
2438void ecb_cold 3612void ecb_cold
2439ev_verify (EV_P) 3613ev_verify (EV_P) EV_NOEXCEPT
2440{ 3614{
2441#if EV_VERIFY 3615#if EV_VERIFY
2442 int i; 3616 int i;
2443 WL w; 3617 WL w, w2;
2444 3618
2445 assert (activecnt >= -1); 3619 assert (activecnt >= -1);
2446 3620
2447 assert (fdchangemax >= fdchangecnt); 3621 assert (fdchangemax >= fdchangecnt);
2448 for (i = 0; i < fdchangecnt; ++i) 3622 for (i = 0; i < fdchangecnt; ++i)
2449 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3623 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2450 3624
2451 assert (anfdmax >= 0); 3625 assert (anfdmax >= 0);
2452 for (i = 0; i < anfdmax; ++i) 3626 for (i = 0; i < anfdmax; ++i)
3627 {
3628 int j = 0;
3629
2453 for (w = anfds [i].head; w; w = w->next) 3630 for (w = w2 = anfds [i].head; w; w = w->next)
2454 { 3631 {
2455 verify_watcher (EV_A_ (W)w); 3632 verify_watcher (EV_A_ (W)w);
3633
3634 if (j++ & 1)
3635 {
3636 assert (("libev: io watcher list contains a loop", w != w2));
3637 w2 = w2->next;
3638 }
3639
2456 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3640 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2457 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3641 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2458 } 3642 }
3643 }
2459 3644
2460 assert (timermax >= timercnt); 3645 assert (timermax >= timercnt);
2461 verify_heap (EV_A_ timers, timercnt); 3646 verify_heap (EV_A_ timers, timercnt);
2462 3647
2463#if EV_PERIODIC_ENABLE 3648#if EV_PERIODIC_ENABLE
… …
2509#endif 3694#endif
2510} 3695}
2511#endif 3696#endif
2512 3697
2513#if EV_MULTIPLICITY 3698#if EV_MULTIPLICITY
3699ecb_cold
2514struct ev_loop * ecb_cold 3700struct ev_loop *
2515#else 3701#else
2516int 3702int
2517#endif 3703#endif
2518ev_default_loop (unsigned int flags) 3704ev_default_loop (unsigned int flags) EV_NOEXCEPT
2519{ 3705{
2520 if (!ev_default_loop_ptr) 3706 if (!ev_default_loop_ptr)
2521 { 3707 {
2522#if EV_MULTIPLICITY 3708#if EV_MULTIPLICITY
2523 EV_P = ev_default_loop_ptr = &default_loop_struct; 3709 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2542 3728
2543 return ev_default_loop_ptr; 3729 return ev_default_loop_ptr;
2544} 3730}
2545 3731
2546void 3732void
2547ev_loop_fork (EV_P) 3733ev_loop_fork (EV_P) EV_NOEXCEPT
2548{ 3734{
2549 postfork = 1; /* must be in line with ev_default_fork */ 3735 postfork = 1;
2550} 3736}
2551 3737
2552/*****************************************************************************/ 3738/*****************************************************************************/
2553 3739
2554void 3740void
… …
2556{ 3742{
2557 EV_CB_INVOKE ((W)w, revents); 3743 EV_CB_INVOKE ((W)w, revents);
2558} 3744}
2559 3745
2560unsigned int 3746unsigned int
2561ev_pending_count (EV_P) 3747ev_pending_count (EV_P) EV_NOEXCEPT
2562{ 3748{
2563 int pri; 3749 int pri;
2564 unsigned int count = 0; 3750 unsigned int count = 0;
2565 3751
2566 for (pri = NUMPRI; pri--; ) 3752 for (pri = NUMPRI; pri--; )
2567 count += pendingcnt [pri]; 3753 count += pendingcnt [pri];
2568 3754
2569 return count; 3755 return count;
2570} 3756}
2571 3757
2572void noinline 3758ecb_noinline
3759void
2573ev_invoke_pending (EV_P) 3760ev_invoke_pending (EV_P)
2574{ 3761{
2575 int pri; 3762 pendingpri = NUMPRI;
2576 3763
2577 for (pri = NUMPRI; pri--; ) 3764 do
3765 {
3766 --pendingpri;
3767
3768 /* pendingpri possibly gets modified in the inner loop */
2578 while (pendingcnt [pri]) 3769 while (pendingcnt [pendingpri])
2579 { 3770 {
2580 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3771 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2581 3772
2582 p->w->pending = 0; 3773 p->w->pending = 0;
2583 EV_CB_INVOKE (p->w, p->events); 3774 EV_CB_INVOKE (p->w, p->events);
2584 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
2585 } 3776 }
3777 }
3778 while (pendingpri);
2586} 3779}
2587 3780
2588#if EV_IDLE_ENABLE 3781#if EV_IDLE_ENABLE
2589/* make idle watchers pending. this handles the "call-idle */ 3782/* make idle watchers pending. this handles the "call-idle */
2590/* only when higher priorities are idle" logic */ 3783/* only when higher priorities are idle" logic */
2591inline_size void 3784inline_size void
2592idle_reify (EV_P) 3785idle_reify (EV_P)
2593{ 3786{
2594 if (expect_false (idleall)) 3787 if (ecb_expect_false (idleall))
2595 { 3788 {
2596 int pri; 3789 int pri;
2597 3790
2598 for (pri = NUMPRI; pri--; ) 3791 for (pri = NUMPRI; pri--; )
2599 { 3792 {
… …
2629 { 3822 {
2630 ev_at (w) += w->repeat; 3823 ev_at (w) += w->repeat;
2631 if (ev_at (w) < mn_now) 3824 if (ev_at (w) < mn_now)
2632 ev_at (w) = mn_now; 3825 ev_at (w) = mn_now;
2633 3826
2634 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3827 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2635 3828
2636 ANHE_at_cache (timers [HEAP0]); 3829 ANHE_at_cache (timers [HEAP0]);
2637 downheap (timers, timercnt, HEAP0); 3830 downheap (timers, timercnt, HEAP0);
2638 } 3831 }
2639 else 3832 else
… …
2648 } 3841 }
2649} 3842}
2650 3843
2651#if EV_PERIODIC_ENABLE 3844#if EV_PERIODIC_ENABLE
2652 3845
2653static void noinline 3846ecb_noinline
3847static void
2654periodic_recalc (EV_P_ ev_periodic *w) 3848periodic_recalc (EV_P_ ev_periodic *w)
2655{ 3849{
2656 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2657 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3851 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2658 3852
… …
2660 while (at <= ev_rt_now) 3854 while (at <= ev_rt_now)
2661 { 3855 {
2662 ev_tstamp nat = at + w->interval; 3856 ev_tstamp nat = at + w->interval;
2663 3857
2664 /* when resolution fails us, we use ev_rt_now */ 3858 /* when resolution fails us, we use ev_rt_now */
2665 if (expect_false (nat == at)) 3859 if (ecb_expect_false (nat == at))
2666 { 3860 {
2667 at = ev_rt_now; 3861 at = ev_rt_now;
2668 break; 3862 break;
2669 } 3863 }
2670 3864
… …
2680{ 3874{
2681 EV_FREQUENT_CHECK; 3875 EV_FREQUENT_CHECK;
2682 3876
2683 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3877 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2684 { 3878 {
2685 int feed_count = 0;
2686
2687 do 3879 do
2688 { 3880 {
2689 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3881 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2690 3882
2691 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3883 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2718 } 3910 }
2719} 3911}
2720 3912
2721/* simply recalculate all periodics */ 3913/* simply recalculate all periodics */
2722/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3914/* TODO: maybe ensure that at least one event happens when jumping forward? */
2723static void noinline ecb_cold 3915ecb_noinline ecb_cold
3916static void
2724periodics_reschedule (EV_P) 3917periodics_reschedule (EV_P)
2725{ 3918{
2726 int i; 3919 int i;
2727 3920
2728 /* adjust periodics after time jump */ 3921 /* adjust periodics after time jump */
… …
2741 reheap (periodics, periodiccnt); 3934 reheap (periodics, periodiccnt);
2742} 3935}
2743#endif 3936#endif
2744 3937
2745/* adjust all timers by a given offset */ 3938/* adjust all timers by a given offset */
2746static void noinline ecb_cold 3939ecb_noinline ecb_cold
3940static void
2747timers_reschedule (EV_P_ ev_tstamp adjust) 3941timers_reschedule (EV_P_ ev_tstamp adjust)
2748{ 3942{
2749 int i; 3943 int i;
2750 3944
2751 for (i = 0; i < timercnt; ++i) 3945 for (i = 0; i < timercnt; ++i)
… …
2760/* also detect if there was a timejump, and act accordingly */ 3954/* also detect if there was a timejump, and act accordingly */
2761inline_speed void 3955inline_speed void
2762time_update (EV_P_ ev_tstamp max_block) 3956time_update (EV_P_ ev_tstamp max_block)
2763{ 3957{
2764#if EV_USE_MONOTONIC 3958#if EV_USE_MONOTONIC
2765 if (expect_true (have_monotonic)) 3959 if (ecb_expect_true (have_monotonic))
2766 { 3960 {
2767 int i; 3961 int i;
2768 ev_tstamp odiff = rtmn_diff; 3962 ev_tstamp odiff = rtmn_diff;
2769 3963
2770 mn_now = get_clock (); 3964 mn_now = get_clock ();
2771 3965
2772 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3966 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2773 /* interpolate in the meantime */ 3967 /* interpolate in the meantime */
2774 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3968 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2775 { 3969 {
2776 ev_rt_now = rtmn_diff + mn_now; 3970 ev_rt_now = rtmn_diff + mn_now;
2777 return; 3971 return;
2778 } 3972 }
2779 3973
… …
2793 ev_tstamp diff; 3987 ev_tstamp diff;
2794 rtmn_diff = ev_rt_now - mn_now; 3988 rtmn_diff = ev_rt_now - mn_now;
2795 3989
2796 diff = odiff - rtmn_diff; 3990 diff = odiff - rtmn_diff;
2797 3991
2798 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3992 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2799 return; /* all is well */ 3993 return; /* all is well */
2800 3994
2801 ev_rt_now = ev_time (); 3995 ev_rt_now = ev_time ();
2802 mn_now = get_clock (); 3996 mn_now = get_clock ();
2803 now_floor = mn_now; 3997 now_floor = mn_now;
… …
2812 else 4006 else
2813#endif 4007#endif
2814 { 4008 {
2815 ev_rt_now = ev_time (); 4009 ev_rt_now = ev_time ();
2816 4010
2817 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4011 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2818 { 4012 {
2819 /* adjust timers. this is easy, as the offset is the same for all of them */ 4013 /* adjust timers. this is easy, as the offset is the same for all of them */
2820 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4014 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2821#if EV_PERIODIC_ENABLE 4015#if EV_PERIODIC_ENABLE
2822 periodics_reschedule (EV_A); 4016 periodics_reschedule (EV_A);
… …
2825 4019
2826 mn_now = ev_rt_now; 4020 mn_now = ev_rt_now;
2827 } 4021 }
2828} 4022}
2829 4023
2830void 4024int
2831ev_run (EV_P_ int flags) 4025ev_run (EV_P_ int flags)
2832{ 4026{
2833#if EV_FEATURE_API 4027#if EV_FEATURE_API
2834 ++loop_depth; 4028 ++loop_depth;
2835#endif 4029#endif
… …
2845#if EV_VERIFY >= 2 4039#if EV_VERIFY >= 2
2846 ev_verify (EV_A); 4040 ev_verify (EV_A);
2847#endif 4041#endif
2848 4042
2849#ifndef _WIN32 4043#ifndef _WIN32
2850 if (expect_false (curpid)) /* penalise the forking check even more */ 4044 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2851 if (expect_false (getpid () != curpid)) 4045 if (ecb_expect_false (getpid () != curpid))
2852 { 4046 {
2853 curpid = getpid (); 4047 curpid = getpid ();
2854 postfork = 1; 4048 postfork = 1;
2855 } 4049 }
2856#endif 4050#endif
2857 4051
2858#if EV_FORK_ENABLE 4052#if EV_FORK_ENABLE
2859 /* we might have forked, so queue fork handlers */ 4053 /* we might have forked, so queue fork handlers */
2860 if (expect_false (postfork)) 4054 if (ecb_expect_false (postfork))
2861 if (forkcnt) 4055 if (forkcnt)
2862 { 4056 {
2863 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4057 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2864 EV_INVOKE_PENDING; 4058 EV_INVOKE_PENDING;
2865 } 4059 }
2866#endif 4060#endif
2867 4061
2868#if EV_PREPARE_ENABLE 4062#if EV_PREPARE_ENABLE
2869 /* queue prepare watchers (and execute them) */ 4063 /* queue prepare watchers (and execute them) */
2870 if (expect_false (preparecnt)) 4064 if (ecb_expect_false (preparecnt))
2871 { 4065 {
2872 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4066 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2873 EV_INVOKE_PENDING; 4067 EV_INVOKE_PENDING;
2874 } 4068 }
2875#endif 4069#endif
2876 4070
2877 if (expect_false (loop_done)) 4071 if (ecb_expect_false (loop_done))
2878 break; 4072 break;
2879 4073
2880 /* we might have forked, so reify kernel state if necessary */ 4074 /* we might have forked, so reify kernel state if necessary */
2881 if (expect_false (postfork)) 4075 if (ecb_expect_false (postfork))
2882 loop_fork (EV_A); 4076 loop_fork (EV_A);
2883 4077
2884 /* update fd-related kernel structures */ 4078 /* update fd-related kernel structures */
2885 fd_reify (EV_A); 4079 fd_reify (EV_A);
2886 4080
… …
2891 4085
2892 /* remember old timestamp for io_blocktime calculation */ 4086 /* remember old timestamp for io_blocktime calculation */
2893 ev_tstamp prev_mn_now = mn_now; 4087 ev_tstamp prev_mn_now = mn_now;
2894 4088
2895 /* update time to cancel out callback processing overhead */ 4089 /* update time to cancel out callback processing overhead */
2896 time_update (EV_A_ 1e100); 4090 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2897 4091
2898 /* from now on, we want a pipe-wake-up */ 4092 /* from now on, we want a pipe-wake-up */
2899 pipe_write_wanted = 1; 4093 pipe_write_wanted = 1;
2900 4094
2901 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4095 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2902 4096
2903 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4097 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2904 { 4098 {
2905 waittime = MAX_BLOCKTIME; 4099 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4100
4101#if EV_USE_MONOTONIC
4102 if (ecb_expect_true (have_monotonic))
4103 {
4104#if EV_USE_TIMERFD
4105 /* sleep a lot longer when we can reliably detect timejumps */
4106 if (ecb_expect_true (timerfd != -1))
4107 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4108#endif
4109#if !EV_PERIODIC_ENABLE
4110 /* without periodics but with monotonic clock there is no need */
4111 /* for any time jump detection, so sleep longer */
4112 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4113#endif
4114 }
4115#endif
2906 4116
2907 if (timercnt) 4117 if (timercnt)
2908 { 4118 {
2909 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4119 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2910 if (waittime > to) waittime = to; 4120 if (waittime > to) waittime = to;
… …
2917 if (waittime > to) waittime = to; 4127 if (waittime > to) waittime = to;
2918 } 4128 }
2919#endif 4129#endif
2920 4130
2921 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4131 /* don't let timeouts decrease the waittime below timeout_blocktime */
2922 if (expect_false (waittime < timeout_blocktime)) 4132 if (ecb_expect_false (waittime < timeout_blocktime))
2923 waittime = timeout_blocktime; 4133 waittime = timeout_blocktime;
2924 4134
2925 /* at this point, we NEED to wait, so we have to ensure */ 4135 /* now there are two more special cases left, either we have
2926 /* to pass a minimum nonzero value to the backend */ 4136 * already-expired timers, so we should not sleep, or we have timers
4137 * that expire very soon, in which case we need to wait for a minimum
4138 * amount of time for some event loop backends.
4139 */
2927 if (expect_false (waittime < backend_mintime)) 4140 if (ecb_expect_false (waittime < backend_mintime))
4141 waittime = waittime <= EV_TS_CONST (0.)
4142 ? EV_TS_CONST (0.)
2928 waittime = backend_mintime; 4143 : backend_mintime;
2929 4144
2930 /* extra check because io_blocktime is commonly 0 */ 4145 /* extra check because io_blocktime is commonly 0 */
2931 if (expect_false (io_blocktime)) 4146 if (ecb_expect_false (io_blocktime))
2932 { 4147 {
2933 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4148 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2934 4149
2935 if (sleeptime > waittime - backend_mintime) 4150 if (sleeptime > waittime - backend_mintime)
2936 sleeptime = waittime - backend_mintime; 4151 sleeptime = waittime - backend_mintime;
2937 4152
2938 if (expect_true (sleeptime > 0.)) 4153 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2939 { 4154 {
2940 ev_sleep (sleeptime); 4155 ev_sleep (sleeptime);
2941 waittime -= sleeptime; 4156 waittime -= sleeptime;
2942 } 4157 }
2943 } 4158 }
… …
2948#endif 4163#endif
2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 4164 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2950 backend_poll (EV_A_ waittime); 4165 backend_poll (EV_A_ waittime);
2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4166 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952 4167
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 4168 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2954 4169
4170 ECB_MEMORY_FENCE_ACQUIRE;
2955 if (pipe_write_skipped) 4171 if (pipe_write_skipped)
2956 { 4172 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4173 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4174 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 } 4175 }
2960 4176
2961
2962 /* update ev_rt_now, do magic */ 4177 /* update ev_rt_now, do magic */
2963 time_update (EV_A_ waittime + sleeptime); 4178 time_update (EV_A_ waittime + sleeptime);
2964 } 4179 }
2965 4180
2966 /* queue pending timers and reschedule them */ 4181 /* queue pending timers and reschedule them */
… …
2974 idle_reify (EV_A); 4189 idle_reify (EV_A);
2975#endif 4190#endif
2976 4191
2977#if EV_CHECK_ENABLE 4192#if EV_CHECK_ENABLE
2978 /* queue check watchers, to be executed first */ 4193 /* queue check watchers, to be executed first */
2979 if (expect_false (checkcnt)) 4194 if (ecb_expect_false (checkcnt))
2980 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2981#endif 4196#endif
2982 4197
2983 EV_INVOKE_PENDING; 4198 EV_INVOKE_PENDING;
2984 } 4199 }
2985 while (expect_true ( 4200 while (ecb_expect_true (
2986 activecnt 4201 activecnt
2987 && !loop_done 4202 && !loop_done
2988 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4203 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2989 )); 4204 ));
2990 4205
… …
2992 loop_done = EVBREAK_CANCEL; 4207 loop_done = EVBREAK_CANCEL;
2993 4208
2994#if EV_FEATURE_API 4209#if EV_FEATURE_API
2995 --loop_depth; 4210 --loop_depth;
2996#endif 4211#endif
4212
4213 return activecnt;
2997} 4214}
2998 4215
2999void 4216void
3000ev_break (EV_P_ int how) 4217ev_break (EV_P_ int how) EV_NOEXCEPT
3001{ 4218{
3002 loop_done = how; 4219 loop_done = how;
3003} 4220}
3004 4221
3005void 4222void
3006ev_ref (EV_P) 4223ev_ref (EV_P) EV_NOEXCEPT
3007{ 4224{
3008 ++activecnt; 4225 ++activecnt;
3009} 4226}
3010 4227
3011void 4228void
3012ev_unref (EV_P) 4229ev_unref (EV_P) EV_NOEXCEPT
3013{ 4230{
3014 --activecnt; 4231 --activecnt;
3015} 4232}
3016 4233
3017void 4234void
3018ev_now_update (EV_P) 4235ev_now_update (EV_P) EV_NOEXCEPT
3019{ 4236{
3020 time_update (EV_A_ 1e100); 4237 time_update (EV_A_ EV_TSTAMP_HUGE);
3021} 4238}
3022 4239
3023void 4240void
3024ev_suspend (EV_P) 4241ev_suspend (EV_P) EV_NOEXCEPT
3025{ 4242{
3026 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3027} 4244}
3028 4245
3029void 4246void
3030ev_resume (EV_P) 4247ev_resume (EV_P) EV_NOEXCEPT
3031{ 4248{
3032 ev_tstamp mn_prev = mn_now; 4249 ev_tstamp mn_prev = mn_now;
3033 4250
3034 ev_now_update (EV_A); 4251 ev_now_update (EV_A);
3035 timers_reschedule (EV_A_ mn_now - mn_prev); 4252 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3052inline_size void 4269inline_size void
3053wlist_del (WL *head, WL elem) 4270wlist_del (WL *head, WL elem)
3054{ 4271{
3055 while (*head) 4272 while (*head)
3056 { 4273 {
3057 if (expect_true (*head == elem)) 4274 if (ecb_expect_true (*head == elem))
3058 { 4275 {
3059 *head = elem->next; 4276 *head = elem->next;
3060 break; 4277 break;
3061 } 4278 }
3062 4279
… …
3074 w->pending = 0; 4291 w->pending = 0;
3075 } 4292 }
3076} 4293}
3077 4294
3078int 4295int
3079ev_clear_pending (EV_P_ void *w) 4296ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3080{ 4297{
3081 W w_ = (W)w; 4298 W w_ = (W)w;
3082 int pending = w_->pending; 4299 int pending = w_->pending;
3083 4300
3084 if (expect_true (pending)) 4301 if (ecb_expect_true (pending))
3085 { 4302 {
3086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4303 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3087 p->w = (W)&pending_w; 4304 p->w = (W)&pending_w;
3088 w_->pending = 0; 4305 w_->pending = 0;
3089 return p->events; 4306 return p->events;
… …
3116 w->active = 0; 4333 w->active = 0;
3117} 4334}
3118 4335
3119/*****************************************************************************/ 4336/*****************************************************************************/
3120 4337
3121void noinline 4338ecb_noinline
4339void
3122ev_io_start (EV_P_ ev_io *w) 4340ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3123{ 4341{
3124 int fd = w->fd; 4342 int fd = w->fd;
3125 4343
3126 if (expect_false (ev_is_active (w))) 4344 if (ecb_expect_false (ev_is_active (w)))
3127 return; 4345 return;
3128 4346
3129 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4347 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3130 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4348 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3131 4349
4350#if EV_VERIFY >= 2
4351 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4352#endif
3132 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
3133 4354
3134 ev_start (EV_A_ (W)w, 1); 4355 ev_start (EV_A_ (W)w, 1);
3135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4356 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3136 wlist_add (&anfds[fd].head, (WL)w); 4357 wlist_add (&anfds[fd].head, (WL)w);
4358
4359 /* common bug, apparently */
4360 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3137 4361
3138 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4362 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3139 w->events &= ~EV__IOFDSET; 4363 w->events &= ~EV__IOFDSET;
3140 4364
3141 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3142} 4366}
3143 4367
3144void noinline 4368ecb_noinline
4369void
3145ev_io_stop (EV_P_ ev_io *w) 4370ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3146{ 4371{
3147 clear_pending (EV_A_ (W)w); 4372 clear_pending (EV_A_ (W)w);
3148 if (expect_false (!ev_is_active (w))) 4373 if (ecb_expect_false (!ev_is_active (w)))
3149 return; 4374 return;
3150 4375
3151 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4376 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3152 4377
4378#if EV_VERIFY >= 2
4379 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4380#endif
3153 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
3154 4382
3155 wlist_del (&anfds[w->fd].head, (WL)w); 4383 wlist_del (&anfds[w->fd].head, (WL)w);
3156 ev_stop (EV_A_ (W)w); 4384 ev_stop (EV_A_ (W)w);
3157 4385
3158 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4386 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3159 4387
3160 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
3161} 4389}
3162 4390
3163void noinline 4391ecb_noinline
4392void
3164ev_timer_start (EV_P_ ev_timer *w) 4393ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3165{ 4394{
3166 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
3167 return; 4396 return;
3168 4397
3169 ev_at (w) += mn_now; 4398 ev_at (w) += mn_now;
3170 4399
3171 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4400 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3172 4401
3173 EV_FREQUENT_CHECK; 4402 EV_FREQUENT_CHECK;
3174 4403
3175 ++timercnt; 4404 ++timercnt;
3176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4405 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3177 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4406 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3178 ANHE_w (timers [ev_active (w)]) = (WT)w; 4407 ANHE_w (timers [ev_active (w)]) = (WT)w;
3179 ANHE_at_cache (timers [ev_active (w)]); 4408 ANHE_at_cache (timers [ev_active (w)]);
3180 upheap (timers, ev_active (w)); 4409 upheap (timers, ev_active (w));
3181 4410
3182 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
3183 4412
3184 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4413 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3185} 4414}
3186 4415
3187void noinline 4416ecb_noinline
4417void
3188ev_timer_stop (EV_P_ ev_timer *w) 4418ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3189{ 4419{
3190 clear_pending (EV_A_ (W)w); 4420 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 4421 if (ecb_expect_false (!ev_is_active (w)))
3192 return; 4422 return;
3193 4423
3194 EV_FREQUENT_CHECK; 4424 EV_FREQUENT_CHECK;
3195 4425
3196 { 4426 {
… …
3198 4428
3199 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4429 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3200 4430
3201 --timercnt; 4431 --timercnt;
3202 4432
3203 if (expect_true (active < timercnt + HEAP0)) 4433 if (ecb_expect_true (active < timercnt + HEAP0))
3204 { 4434 {
3205 timers [active] = timers [timercnt + HEAP0]; 4435 timers [active] = timers [timercnt + HEAP0];
3206 adjustheap (timers, timercnt, active); 4436 adjustheap (timers, timercnt, active);
3207 } 4437 }
3208 } 4438 }
… …
3212 ev_stop (EV_A_ (W)w); 4442 ev_stop (EV_A_ (W)w);
3213 4443
3214 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
3215} 4445}
3216 4446
3217void noinline 4447ecb_noinline
4448void
3218ev_timer_again (EV_P_ ev_timer *w) 4449ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3219{ 4450{
3220 EV_FREQUENT_CHECK; 4451 EV_FREQUENT_CHECK;
4452
4453 clear_pending (EV_A_ (W)w);
3221 4454
3222 if (ev_is_active (w)) 4455 if (ev_is_active (w))
3223 { 4456 {
3224 if (w->repeat) 4457 if (w->repeat)
3225 { 4458 {
… …
3238 4471
3239 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
3240} 4473}
3241 4474
3242ev_tstamp 4475ev_tstamp
3243ev_timer_remaining (EV_P_ ev_timer *w) 4476ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3244{ 4477{
3245 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4478 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3246} 4479}
3247 4480
3248#if EV_PERIODIC_ENABLE 4481#if EV_PERIODIC_ENABLE
3249void noinline 4482ecb_noinline
4483void
3250ev_periodic_start (EV_P_ ev_periodic *w) 4484ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3251{ 4485{
3252 if (expect_false (ev_is_active (w))) 4486 if (ecb_expect_false (ev_is_active (w)))
3253 return; 4487 return;
4488
4489#if EV_USE_TIMERFD
4490 if (timerfd == -2)
4491 evtimerfd_init (EV_A);
4492#endif
3254 4493
3255 if (w->reschedule_cb) 4494 if (w->reschedule_cb)
3256 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4495 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3257 else if (w->interval) 4496 else if (w->interval)
3258 { 4497 {
… …
3264 4503
3265 EV_FREQUENT_CHECK; 4504 EV_FREQUENT_CHECK;
3266 4505
3267 ++periodiccnt; 4506 ++periodiccnt;
3268 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4507 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3269 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4508 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3270 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4509 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3271 ANHE_at_cache (periodics [ev_active (w)]); 4510 ANHE_at_cache (periodics [ev_active (w)]);
3272 upheap (periodics, ev_active (w)); 4511 upheap (periodics, ev_active (w));
3273 4512
3274 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
3275 4514
3276 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4515 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3277} 4516}
3278 4517
3279void noinline 4518ecb_noinline
4519void
3280ev_periodic_stop (EV_P_ ev_periodic *w) 4520ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3281{ 4521{
3282 clear_pending (EV_A_ (W)w); 4522 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4523 if (ecb_expect_false (!ev_is_active (w)))
3284 return; 4524 return;
3285 4525
3286 EV_FREQUENT_CHECK; 4526 EV_FREQUENT_CHECK;
3287 4527
3288 { 4528 {
… …
3290 4530
3291 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4531 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3292 4532
3293 --periodiccnt; 4533 --periodiccnt;
3294 4534
3295 if (expect_true (active < periodiccnt + HEAP0)) 4535 if (ecb_expect_true (active < periodiccnt + HEAP0))
3296 { 4536 {
3297 periodics [active] = periodics [periodiccnt + HEAP0]; 4537 periodics [active] = periodics [periodiccnt + HEAP0];
3298 adjustheap (periodics, periodiccnt, active); 4538 adjustheap (periodics, periodiccnt, active);
3299 } 4539 }
3300 } 4540 }
… …
3302 ev_stop (EV_A_ (W)w); 4542 ev_stop (EV_A_ (W)w);
3303 4543
3304 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
3305} 4545}
3306 4546
3307void noinline 4547ecb_noinline
4548void
3308ev_periodic_again (EV_P_ ev_periodic *w) 4549ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3309{ 4550{
3310 /* TODO: use adjustheap and recalculation */ 4551 /* TODO: use adjustheap and recalculation */
3311 ev_periodic_stop (EV_A_ w); 4552 ev_periodic_stop (EV_A_ w);
3312 ev_periodic_start (EV_A_ w); 4553 ev_periodic_start (EV_A_ w);
3313} 4554}
… …
3317# define SA_RESTART 0 4558# define SA_RESTART 0
3318#endif 4559#endif
3319 4560
3320#if EV_SIGNAL_ENABLE 4561#if EV_SIGNAL_ENABLE
3321 4562
3322void noinline 4563ecb_noinline
4564void
3323ev_signal_start (EV_P_ ev_signal *w) 4565ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3324{ 4566{
3325 if (expect_false (ev_is_active (w))) 4567 if (ecb_expect_false (ev_is_active (w)))
3326 return; 4568 return;
3327 4569
3328 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4570 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3329 4571
3330#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
3331 assert (("libev: a signal must not be attached to two different loops", 4573 assert (("libev: a signal must not be attached to two different loops",
3332 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4574 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3333 4575
3334 signals [w->signum - 1].loop = EV_A; 4576 signals [w->signum - 1].loop = EV_A;
4577 ECB_MEMORY_FENCE_RELEASE;
3335#endif 4578#endif
3336 4579
3337 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
3338 4581
3339#if EV_USE_SIGNALFD 4582#if EV_USE_SIGNALFD
… …
3398 } 4641 }
3399 4642
3400 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
3401} 4644}
3402 4645
3403void noinline 4646ecb_noinline
4647void
3404ev_signal_stop (EV_P_ ev_signal *w) 4648ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3405{ 4649{
3406 clear_pending (EV_A_ (W)w); 4650 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4651 if (ecb_expect_false (!ev_is_active (w)))
3408 return; 4652 return;
3409 4653
3410 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3411 4655
3412 wlist_del (&signals [w->signum - 1].head, (WL)w); 4656 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3440#endif 4684#endif
3441 4685
3442#if EV_CHILD_ENABLE 4686#if EV_CHILD_ENABLE
3443 4687
3444void 4688void
3445ev_child_start (EV_P_ ev_child *w) 4689ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3446{ 4690{
3447#if EV_MULTIPLICITY 4691#if EV_MULTIPLICITY
3448 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4692 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3449#endif 4693#endif
3450 if (expect_false (ev_is_active (w))) 4694 if (ecb_expect_false (ev_is_active (w)))
3451 return; 4695 return;
3452 4696
3453 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3454 4698
3455 ev_start (EV_A_ (W)w, 1); 4699 ev_start (EV_A_ (W)w, 1);
… …
3457 4701
3458 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3459} 4703}
3460 4704
3461void 4705void
3462ev_child_stop (EV_P_ ev_child *w) 4706ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3463{ 4707{
3464 clear_pending (EV_A_ (W)w); 4708 clear_pending (EV_A_ (W)w);
3465 if (expect_false (!ev_is_active (w))) 4709 if (ecb_expect_false (!ev_is_active (w)))
3466 return; 4710 return;
3467 4711
3468 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
3469 4713
3470 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4714 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3484 4728
3485#define DEF_STAT_INTERVAL 5.0074891 4729#define DEF_STAT_INTERVAL 5.0074891
3486#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4730#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3487#define MIN_STAT_INTERVAL 0.1074891 4731#define MIN_STAT_INTERVAL 0.1074891
3488 4732
3489static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4733ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3490 4734
3491#if EV_USE_INOTIFY 4735#if EV_USE_INOTIFY
3492 4736
3493/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4737/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3494# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4738# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3495 4739
3496static void noinline 4740ecb_noinline
4741static void
3497infy_add (EV_P_ ev_stat *w) 4742infy_add (EV_P_ ev_stat *w)
3498{ 4743{
3499 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); 4744 w->wd = inotify_add_watch (fs_fd, w->path,
4745 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4746 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4747 | IN_DONT_FOLLOW | IN_MASK_ADD);
3500 4748
3501 if (w->wd >= 0) 4749 if (w->wd >= 0)
3502 { 4750 {
3503 struct statfs sfs; 4751 struct statfs sfs;
3504 4752
… …
3508 4756
3509 if (!fs_2625) 4757 if (!fs_2625)
3510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4758 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3511 else if (!statfs (w->path, &sfs) 4759 else if (!statfs (w->path, &sfs)
3512 && (sfs.f_type == 0x1373 /* devfs */ 4760 && (sfs.f_type == 0x1373 /* devfs */
4761 || sfs.f_type == 0x4006 /* fat */
4762 || sfs.f_type == 0x4d44 /* msdos */
3513 || sfs.f_type == 0xEF53 /* ext2/3 */ 4763 || sfs.f_type == 0xEF53 /* ext2/3 */
4764 || sfs.f_type == 0x72b6 /* jffs2 */
4765 || sfs.f_type == 0x858458f6 /* ramfs */
4766 || sfs.f_type == 0x5346544e /* ntfs */
3514 || sfs.f_type == 0x3153464a /* jfs */ 4767 || sfs.f_type == 0x3153464a /* jfs */
4768 || sfs.f_type == 0x9123683e /* btrfs */
3515 || sfs.f_type == 0x52654973 /* reiser3 */ 4769 || sfs.f_type == 0x52654973 /* reiser3 */
3516 || sfs.f_type == 0x01021994 /* tempfs */ 4770 || sfs.f_type == 0x01021994 /* tmpfs */
3517 || sfs.f_type == 0x58465342 /* xfs */)) 4771 || sfs.f_type == 0x58465342 /* xfs */))
3518 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4772 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3519 else 4773 else
3520 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4774 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3521 } 4775 }
… …
3556 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4810 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3557 ev_timer_again (EV_A_ &w->timer); 4811 ev_timer_again (EV_A_ &w->timer);
3558 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4812 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3559} 4813}
3560 4814
3561static void noinline 4815ecb_noinline
4816static void
3562infy_del (EV_P_ ev_stat *w) 4817infy_del (EV_P_ ev_stat *w)
3563{ 4818{
3564 int slot; 4819 int slot;
3565 int wd = w->wd; 4820 int wd = w->wd;
3566 4821
… …
3573 4828
3574 /* remove this watcher, if others are watching it, they will rearm */ 4829 /* remove this watcher, if others are watching it, they will rearm */
3575 inotify_rm_watch (fs_fd, wd); 4830 inotify_rm_watch (fs_fd, wd);
3576} 4831}
3577 4832
3578static void noinline 4833ecb_noinline
4834static void
3579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4835infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3580{ 4836{
3581 if (slot < 0) 4837 if (slot < 0)
3582 /* overflow, need to check for all hash slots */ 4838 /* overflow, need to check for all hash slots */
3583 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4839 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3619 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4875 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3620 ofs += sizeof (struct inotify_event) + ev->len; 4876 ofs += sizeof (struct inotify_event) + ev->len;
3621 } 4877 }
3622} 4878}
3623 4879
3624inline_size void ecb_cold 4880inline_size ecb_cold
4881void
3625ev_check_2625 (EV_P) 4882ev_check_2625 (EV_P)
3626{ 4883{
3627 /* kernels < 2.6.25 are borked 4884 /* kernels < 2.6.25 are borked
3628 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4885 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3629 */ 4886 */
… …
3634} 4891}
3635 4892
3636inline_size int 4893inline_size int
3637infy_newfd (void) 4894infy_newfd (void)
3638{ 4895{
3639#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4896#if defined IN_CLOEXEC && defined IN_NONBLOCK
3640 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4897 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3641 if (fd >= 0) 4898 if (fd >= 0)
3642 return fd; 4899 return fd;
3643#endif 4900#endif
3644 return inotify_init (); 4901 return inotify_init ();
… …
3719#else 4976#else
3720# define EV_LSTAT(p,b) lstat (p, b) 4977# define EV_LSTAT(p,b) lstat (p, b)
3721#endif 4978#endif
3722 4979
3723void 4980void
3724ev_stat_stat (EV_P_ ev_stat *w) 4981ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3725{ 4982{
3726 if (lstat (w->path, &w->attr) < 0) 4983 if (lstat (w->path, &w->attr) < 0)
3727 w->attr.st_nlink = 0; 4984 w->attr.st_nlink = 0;
3728 else if (!w->attr.st_nlink) 4985 else if (!w->attr.st_nlink)
3729 w->attr.st_nlink = 1; 4986 w->attr.st_nlink = 1;
3730} 4987}
3731 4988
3732static void noinline 4989ecb_noinline
4990static void
3733stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4991stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3734{ 4992{
3735 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4993 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3736 4994
3737 ev_statdata prev = w->attr; 4995 ev_statdata prev = w->attr;
… …
3768 ev_feed_event (EV_A_ w, EV_STAT); 5026 ev_feed_event (EV_A_ w, EV_STAT);
3769 } 5027 }
3770} 5028}
3771 5029
3772void 5030void
3773ev_stat_start (EV_P_ ev_stat *w) 5031ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3774{ 5032{
3775 if (expect_false (ev_is_active (w))) 5033 if (ecb_expect_false (ev_is_active (w)))
3776 return; 5034 return;
3777 5035
3778 ev_stat_stat (EV_A_ w); 5036 ev_stat_stat (EV_A_ w);
3779 5037
3780 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5038 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3799 5057
3800 EV_FREQUENT_CHECK; 5058 EV_FREQUENT_CHECK;
3801} 5059}
3802 5060
3803void 5061void
3804ev_stat_stop (EV_P_ ev_stat *w) 5062ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3805{ 5063{
3806 clear_pending (EV_A_ (W)w); 5064 clear_pending (EV_A_ (W)w);
3807 if (expect_false (!ev_is_active (w))) 5065 if (ecb_expect_false (!ev_is_active (w)))
3808 return; 5066 return;
3809 5067
3810 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
3811 5069
3812#if EV_USE_INOTIFY 5070#if EV_USE_INOTIFY
… …
3825} 5083}
3826#endif 5084#endif
3827 5085
3828#if EV_IDLE_ENABLE 5086#if EV_IDLE_ENABLE
3829void 5087void
3830ev_idle_start (EV_P_ ev_idle *w) 5088ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3831{ 5089{
3832 if (expect_false (ev_is_active (w))) 5090 if (ecb_expect_false (ev_is_active (w)))
3833 return; 5091 return;
3834 5092
3835 pri_adjust (EV_A_ (W)w); 5093 pri_adjust (EV_A_ (W)w);
3836 5094
3837 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
… …
3840 int active = ++idlecnt [ABSPRI (w)]; 5098 int active = ++idlecnt [ABSPRI (w)];
3841 5099
3842 ++idleall; 5100 ++idleall;
3843 ev_start (EV_A_ (W)w, active); 5101 ev_start (EV_A_ (W)w, active);
3844 5102
3845 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5103 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3846 idles [ABSPRI (w)][active - 1] = w; 5104 idles [ABSPRI (w)][active - 1] = w;
3847 } 5105 }
3848 5106
3849 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
3850} 5108}
3851 5109
3852void 5110void
3853ev_idle_stop (EV_P_ ev_idle *w) 5111ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3854{ 5112{
3855 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
3856 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
3857 return; 5115 return;
3858 5116
3859 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
3860 5118
3861 { 5119 {
… …
3872} 5130}
3873#endif 5131#endif
3874 5132
3875#if EV_PREPARE_ENABLE 5133#if EV_PREPARE_ENABLE
3876void 5134void
3877ev_prepare_start (EV_P_ ev_prepare *w) 5135ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3878{ 5136{
3879 if (expect_false (ev_is_active (w))) 5137 if (ecb_expect_false (ev_is_active (w)))
3880 return; 5138 return;
3881 5139
3882 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
3883 5141
3884 ev_start (EV_A_ (W)w, ++preparecnt); 5142 ev_start (EV_A_ (W)w, ++preparecnt);
3885 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5143 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3886 prepares [preparecnt - 1] = w; 5144 prepares [preparecnt - 1] = w;
3887 5145
3888 EV_FREQUENT_CHECK; 5146 EV_FREQUENT_CHECK;
3889} 5147}
3890 5148
3891void 5149void
3892ev_prepare_stop (EV_P_ ev_prepare *w) 5150ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3893{ 5151{
3894 clear_pending (EV_A_ (W)w); 5152 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 5153 if (ecb_expect_false (!ev_is_active (w)))
3896 return; 5154 return;
3897 5155
3898 EV_FREQUENT_CHECK; 5156 EV_FREQUENT_CHECK;
3899 5157
3900 { 5158 {
… …
3910} 5168}
3911#endif 5169#endif
3912 5170
3913#if EV_CHECK_ENABLE 5171#if EV_CHECK_ENABLE
3914void 5172void
3915ev_check_start (EV_P_ ev_check *w) 5173ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3916{ 5174{
3917 if (expect_false (ev_is_active (w))) 5175 if (ecb_expect_false (ev_is_active (w)))
3918 return; 5176 return;
3919 5177
3920 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
3921 5179
3922 ev_start (EV_A_ (W)w, ++checkcnt); 5180 ev_start (EV_A_ (W)w, ++checkcnt);
3923 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5181 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3924 checks [checkcnt - 1] = w; 5182 checks [checkcnt - 1] = w;
3925 5183
3926 EV_FREQUENT_CHECK; 5184 EV_FREQUENT_CHECK;
3927} 5185}
3928 5186
3929void 5187void
3930ev_check_stop (EV_P_ ev_check *w) 5188ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3931{ 5189{
3932 clear_pending (EV_A_ (W)w); 5190 clear_pending (EV_A_ (W)w);
3933 if (expect_false (!ev_is_active (w))) 5191 if (ecb_expect_false (!ev_is_active (w)))
3934 return; 5192 return;
3935 5193
3936 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
3937 5195
3938 { 5196 {
… …
3947 EV_FREQUENT_CHECK; 5205 EV_FREQUENT_CHECK;
3948} 5206}
3949#endif 5207#endif
3950 5208
3951#if EV_EMBED_ENABLE 5209#if EV_EMBED_ENABLE
3952void noinline 5210ecb_noinline
5211void
3953ev_embed_sweep (EV_P_ ev_embed *w) 5212ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3954{ 5213{
3955 ev_run (w->other, EVRUN_NOWAIT); 5214 ev_run (w->other, EVRUN_NOWAIT);
3956} 5215}
3957 5216
3958static void 5217static void
… …
3980 ev_run (EV_A_ EVRUN_NOWAIT); 5239 ev_run (EV_A_ EVRUN_NOWAIT);
3981 } 5240 }
3982 } 5241 }
3983} 5242}
3984 5243
5244#if EV_FORK_ENABLE
3985static void 5245static void
3986embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5246embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3987{ 5247{
3988 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5248 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3989 5249
… …
3996 ev_run (EV_A_ EVRUN_NOWAIT); 5256 ev_run (EV_A_ EVRUN_NOWAIT);
3997 } 5257 }
3998 5258
3999 ev_embed_start (EV_A_ w); 5259 ev_embed_start (EV_A_ w);
4000} 5260}
5261#endif
4001 5262
4002#if 0 5263#if 0
4003static void 5264static void
4004embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5265embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4005{ 5266{
4006 ev_idle_stop (EV_A_ idle); 5267 ev_idle_stop (EV_A_ idle);
4007} 5268}
4008#endif 5269#endif
4009 5270
4010void 5271void
4011ev_embed_start (EV_P_ ev_embed *w) 5272ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4012{ 5273{
4013 if (expect_false (ev_is_active (w))) 5274 if (ecb_expect_false (ev_is_active (w)))
4014 return; 5275 return;
4015 5276
4016 { 5277 {
4017 EV_P = w->other; 5278 EV_P = w->other;
4018 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5279 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4026 5287
4027 ev_prepare_init (&w->prepare, embed_prepare_cb); 5288 ev_prepare_init (&w->prepare, embed_prepare_cb);
4028 ev_set_priority (&w->prepare, EV_MINPRI); 5289 ev_set_priority (&w->prepare, EV_MINPRI);
4029 ev_prepare_start (EV_A_ &w->prepare); 5290 ev_prepare_start (EV_A_ &w->prepare);
4030 5291
5292#if EV_FORK_ENABLE
4031 ev_fork_init (&w->fork, embed_fork_cb); 5293 ev_fork_init (&w->fork, embed_fork_cb);
4032 ev_fork_start (EV_A_ &w->fork); 5294 ev_fork_start (EV_A_ &w->fork);
5295#endif
4033 5296
4034 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5297 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4035 5298
4036 ev_start (EV_A_ (W)w, 1); 5299 ev_start (EV_A_ (W)w, 1);
4037 5300
4038 EV_FREQUENT_CHECK; 5301 EV_FREQUENT_CHECK;
4039} 5302}
4040 5303
4041void 5304void
4042ev_embed_stop (EV_P_ ev_embed *w) 5305ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4043{ 5306{
4044 clear_pending (EV_A_ (W)w); 5307 clear_pending (EV_A_ (W)w);
4045 if (expect_false (!ev_is_active (w))) 5308 if (ecb_expect_false (!ev_is_active (w)))
4046 return; 5309 return;
4047 5310
4048 EV_FREQUENT_CHECK; 5311 EV_FREQUENT_CHECK;
4049 5312
4050 ev_io_stop (EV_A_ &w->io); 5313 ev_io_stop (EV_A_ &w->io);
4051 ev_prepare_stop (EV_A_ &w->prepare); 5314 ev_prepare_stop (EV_A_ &w->prepare);
5315#if EV_FORK_ENABLE
4052 ev_fork_stop (EV_A_ &w->fork); 5316 ev_fork_stop (EV_A_ &w->fork);
5317#endif
4053 5318
4054 ev_stop (EV_A_ (W)w); 5319 ev_stop (EV_A_ (W)w);
4055 5320
4056 EV_FREQUENT_CHECK; 5321 EV_FREQUENT_CHECK;
4057} 5322}
4058#endif 5323#endif
4059 5324
4060#if EV_FORK_ENABLE 5325#if EV_FORK_ENABLE
4061void 5326void
4062ev_fork_start (EV_P_ ev_fork *w) 5327ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4063{ 5328{
4064 if (expect_false (ev_is_active (w))) 5329 if (ecb_expect_false (ev_is_active (w)))
4065 return; 5330 return;
4066 5331
4067 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4068 5333
4069 ev_start (EV_A_ (W)w, ++forkcnt); 5334 ev_start (EV_A_ (W)w, ++forkcnt);
4070 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5335 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4071 forks [forkcnt - 1] = w; 5336 forks [forkcnt - 1] = w;
4072 5337
4073 EV_FREQUENT_CHECK; 5338 EV_FREQUENT_CHECK;
4074} 5339}
4075 5340
4076void 5341void
4077ev_fork_stop (EV_P_ ev_fork *w) 5342ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4078{ 5343{
4079 clear_pending (EV_A_ (W)w); 5344 clear_pending (EV_A_ (W)w);
4080 if (expect_false (!ev_is_active (w))) 5345 if (ecb_expect_false (!ev_is_active (w)))
4081 return; 5346 return;
4082 5347
4083 EV_FREQUENT_CHECK; 5348 EV_FREQUENT_CHECK;
4084 5349
4085 { 5350 {
… …
4095} 5360}
4096#endif 5361#endif
4097 5362
4098#if EV_CLEANUP_ENABLE 5363#if EV_CLEANUP_ENABLE
4099void 5364void
4100ev_cleanup_start (EV_P_ ev_cleanup *w) 5365ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4101{ 5366{
4102 if (expect_false (ev_is_active (w))) 5367 if (ecb_expect_false (ev_is_active (w)))
4103 return; 5368 return;
4104 5369
4105 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4106 5371
4107 ev_start (EV_A_ (W)w, ++cleanupcnt); 5372 ev_start (EV_A_ (W)w, ++cleanupcnt);
4108 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5373 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4109 cleanups [cleanupcnt - 1] = w; 5374 cleanups [cleanupcnt - 1] = w;
4110 5375
4111 /* cleanup watchers should never keep a refcount on the loop */ 5376 /* cleanup watchers should never keep a refcount on the loop */
4112 ev_unref (EV_A); 5377 ev_unref (EV_A);
4113 EV_FREQUENT_CHECK; 5378 EV_FREQUENT_CHECK;
4114} 5379}
4115 5380
4116void 5381void
4117ev_cleanup_stop (EV_P_ ev_cleanup *w) 5382ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4118{ 5383{
4119 clear_pending (EV_A_ (W)w); 5384 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w))) 5385 if (ecb_expect_false (!ev_is_active (w)))
4121 return; 5386 return;
4122 5387
4123 EV_FREQUENT_CHECK; 5388 EV_FREQUENT_CHECK;
4124 ev_ref (EV_A); 5389 ev_ref (EV_A);
4125 5390
… …
4136} 5401}
4137#endif 5402#endif
4138 5403
4139#if EV_ASYNC_ENABLE 5404#if EV_ASYNC_ENABLE
4140void 5405void
4141ev_async_start (EV_P_ ev_async *w) 5406ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4142{ 5407{
4143 if (expect_false (ev_is_active (w))) 5408 if (ecb_expect_false (ev_is_active (w)))
4144 return; 5409 return;
4145 5410
4146 w->sent = 0; 5411 w->sent = 0;
4147 5412
4148 evpipe_init (EV_A); 5413 evpipe_init (EV_A);
4149 5414
4150 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4151 5416
4152 ev_start (EV_A_ (W)w, ++asynccnt); 5417 ev_start (EV_A_ (W)w, ++asynccnt);
4153 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5418 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4154 asyncs [asynccnt - 1] = w; 5419 asyncs [asynccnt - 1] = w;
4155 5420
4156 EV_FREQUENT_CHECK; 5421 EV_FREQUENT_CHECK;
4157} 5422}
4158 5423
4159void 5424void
4160ev_async_stop (EV_P_ ev_async *w) 5425ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4161{ 5426{
4162 clear_pending (EV_A_ (W)w); 5427 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 5428 if (ecb_expect_false (!ev_is_active (w)))
4164 return; 5429 return;
4165 5430
4166 EV_FREQUENT_CHECK; 5431 EV_FREQUENT_CHECK;
4167 5432
4168 { 5433 {
… …
4176 5441
4177 EV_FREQUENT_CHECK; 5442 EV_FREQUENT_CHECK;
4178} 5443}
4179 5444
4180void 5445void
4181ev_async_send (EV_P_ ev_async *w) 5446ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4182{ 5447{
4183 w->sent = 1; 5448 w->sent = 1;
4184 evpipe_write (EV_A_ &async_pending); 5449 evpipe_write (EV_A_ &async_pending);
4185} 5450}
4186#endif 5451#endif
… …
4223 5488
4224 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5489 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4225} 5490}
4226 5491
4227void 5492void
4228ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5493ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4229{ 5494{
4230 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5495 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4231
4232 if (expect_false (!once))
4233 {
4234 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4235 return;
4236 }
4237 5496
4238 once->cb = cb; 5497 once->cb = cb;
4239 once->arg = arg; 5498 once->arg = arg;
4240 5499
4241 ev_init (&once->io, once_cb_io); 5500 ev_init (&once->io, once_cb_io);
… …
4254} 5513}
4255 5514
4256/*****************************************************************************/ 5515/*****************************************************************************/
4257 5516
4258#if EV_WALK_ENABLE 5517#if EV_WALK_ENABLE
4259void ecb_cold 5518ecb_cold
5519void
4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5520ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4261{ 5521{
4262 int i, j; 5522 int i, j;
4263 ev_watcher_list *wl, *wn; 5523 ev_watcher_list *wl, *wn;
4264 5524
4265 if (types & (EV_IO | EV_EMBED)) 5525 if (types & (EV_IO | EV_EMBED))
… …
4371 5631
4372#if EV_MULTIPLICITY 5632#if EV_MULTIPLICITY
4373 #include "ev_wrap.h" 5633 #include "ev_wrap.h"
4374#endif 5634#endif
4375 5635
4376EV_CPP(})
4377

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