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Comparing libev/ev.c (file contents):
Revision 1.396 by root, Wed Aug 24 16:13:17 2011 UTC vs.
Revision 1.524 by root, Wed Jan 22 02:20:47 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
183# include EV_H 220# include EV_H
184#else 221#else
185# include "ev.h" 222# include "ev.h"
186#endif 223#endif
187 224
188EV_CPP(extern "C" {) 225#if EV_NO_THREADS
226# undef EV_NO_SMP
227# define EV_NO_SMP 1
228# undef ECB_NO_THREADS
229# define ECB_NO_THREADS 1
230#endif
231#if EV_NO_SMP
232# undef EV_NO_SMP
233# define ECB_NO_SMP 1
234#endif
189 235
190#ifndef _WIN32 236#ifndef _WIN32
191# include <sys/time.h> 237# include <sys/time.h>
192# include <sys/wait.h> 238# include <sys/wait.h>
193# include <unistd.h> 239# include <unistd.h>
194#else 240#else
195# include <io.h> 241# include <io.h>
196# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
197# include <windows.h> 244# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
200# endif 247# endif
201# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
202#endif 249#endif
203 250
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 */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
213 252
214/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 254#if defined EV_NSIG
216/* use what's provided */ 255/* use what's provided */
217#elif defined (NSIG) 256#elif defined NSIG
218# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 258#elif defined _NSIG
220# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 260#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 262#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 266#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 268#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 272#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 274#else
236# error "unable to find value for NSIG, please report" 275# 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 276#endif
241 277
242#ifndef EV_USE_FLOOR 278#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 279# define EV_USE_FLOOR 0
244#endif 280#endif
245 281
246#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 285# else
250# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
251# endif 287# endif
252#endif 288#endif
253 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
254#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 302# else
258# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
259# endif 304# endif
260#endif 305#endif
… …
297 342
298#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 344# define EV_USE_PORT 0
300#endif 345#endif
301 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
302#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 366# else
306# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
329# else 390# else
330# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
331# endif 392# endif
332#endif 393#endif
333 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
334#if 0 /* debugging */ 403#if 0 /* debugging */
335# define EV_VERIFY 3 404# define EV_VERIFY 3
336# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
337# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
338#endif 407#endif
… …
347 416
348#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 419#endif
351 420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
435#endif
436
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 440# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
360# else 446# else
361# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
363# endif 449# endif
364#endif 450#endif
365 451
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 452/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 453
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 454#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
377#endif 457#endif
378 458
… …
384#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
385# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
387#endif 467#endif
388 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
389#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 479# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
393# endif 506# endif
394#endif 507#endif
395 508
396#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
397# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
401# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
403# endif 516# endif
404#endif 517#endif
405 518
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif
409
410#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
412# include <stdint.h> 521# include <stdint.h>
413# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
414# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
415# endif 524# endif
416# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
422# endif 531# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif 533#endif
425 534
426#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
428# include <stdint.h> 537# include <stdint.h>
429# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
431# endif 540# endif
432# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
434# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
435# else 544# else
436# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
437# endif 546# endif
438# endif 547# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
440 549
441struct signalfd_siginfo 550struct signalfd_siginfo
442{ 551{
443 uint32_t ssi_signo; 552 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
445}; 554};
446#endif 555#endif
447 556
448/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
449 568
450#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else 571#else
453# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
458 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
459 */ 578 */
460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 581
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
465 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
468 603
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
471/* 606/*
472 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
473 * 608 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 609 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 610 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 611 * All rights reserved.
477 * 612 *
478 * Redistribution and use in source and binary forms, with or without modifica- 613 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 614 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 630 * 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 631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
498 */ 644 */
499 645
500#ifndef ECB_H 646#ifndef ECB_H
501#define ECB_H 647#define ECB_H
648
649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
502 653
503#ifdef _WIN32 654#ifdef _WIN32
504 typedef signed char int8_t; 655 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
506 typedef signed short int16_t; 659 typedef signed short int16_t;
507 typedef unsigned short uint16_t; 660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
508 typedef signed int int32_t; 663 typedef signed int int32_t;
509 typedef unsigned int uint32_t; 664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
510 #if __GNUC__ 667 #if __GNUC__
511 typedef signed long long int64_t; 668 typedef signed long long int64_t;
512 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
516 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
676 #ifdef _WIN64
677 #define ECB_PTRSIZE 8
678 typedef uint64_t uintptr_t;
679 typedef int64_t intptr_t;
680 #else
681 #define ECB_PTRSIZE 4
682 typedef uint32_t uintptr_t;
683 typedef int32_t intptr_t;
684 #endif
517#else 685#else
518 #include <inttypes.h> 686 #include <inttypes.h>
687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
688 #define ECB_PTRSIZE 8
689 #else
690 #define ECB_PTRSIZE 4
691 #endif
692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
704
705/* work around x32 idiocy by defining proper macros */
706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
711 #endif
519#endif 712#endif
520 713
521/* many compilers define _GNUC_ to some versions but then only implement 714/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 715 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 716 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 717 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 718 * 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. 719 * an issue with that they should have done it right in the first place.
527 */ 720 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 722 #define ECB_GCC_VERSION(major,minor) 0
531 #else 723#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 725#endif
726
727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
728
729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
741#define ECB_CPP (__cplusplus+0)
742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
757
758#if ECB_CPP
759 #define ECB_EXTERN_C extern "C"
760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
761 #define ECB_EXTERN_C_END }
762#else
763 #define ECB_EXTERN_C extern
764 #define ECB_EXTERN_C_BEG
765 #define ECB_EXTERN_C_END
534#endif 766#endif
535 767
536/*****************************************************************************/ 768/*****************************************************************************/
537 769
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 770/* 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 */ 771/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 772
541#if ECB_NO_THREADS || ECB_NO_SMP 773#if ECB_NO_THREADS
774 #define ECB_NO_SMP 1
775#endif
776
777#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 778 #define ECB_MEMORY_FENCE do { } while (0)
543#endif 779#endif
544 780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
545#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) 791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
547 #if __i386__ 793 #if __i386 || __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
551 #elif __amd64 797 #elif ECB_GCC_AMD64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
823 #elif defined __s390__ || defined __s390x__
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
829 #elif defined __alpha__
830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
831 #elif defined __hppa__
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
834 #elif defined __ia64__
835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
563 #endif 842 #endif
564 #endif 843 #endif
565#endif 844#endif
566 845
567#ifndef ECB_MEMORY_FENCE 846#ifndef ECB_MEMORY_FENCE
847 #if ECB_GCC_VERSION(4,7)
848 /* see comment below (stdatomic.h) about the C11 memory model. */
849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
853
854 #elif ECB_CLANG_EXTENSION(c_atomic)
855 /* see comment below (stdatomic.h) about the C11 memory model. */
856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
860
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 874 #elif defined _WIN32
578 #include <WinNT.h> 875 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
878 #include <mbarrier.h>
879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
883 #elif __xlC__
884 #define ECB_MEMORY_FENCE __sync ()
885 #endif
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
890 /* we assume that these memory fences work on all variables/all memory accesses, */
891 /* not just C11 atomics and atomic accesses */
892 #include <stdatomic.h>
893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
580 #endif 896 #endif
581#endif 897#endif
582 898
583#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 912 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 913 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif 914 #endif
599#endif 915#endif
600 916
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 917#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 919#endif
604 920
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 923#endif
608 924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
609/*****************************************************************************/ 929/*****************************************************************************/
610 930
611#define ECB_C99 (__STDC_VERSION__ >= 199901L) 931#if ECB_CPP
612
613#if __cplusplus
614 #define ecb_inline static inline 932 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 933#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 934 #define ecb_inline static __inline__
617#elif ECB_C99 935#elif ECB_C99
618 #define ecb_inline static inline 936 #define ecb_inline static inline
… …
632 950
633#define ECB_CONCAT_(a, b) a ## b 951#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a 953#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
637 956
638#define ecb_function_ ecb_inline 957#define ecb_function_ ecb_inline
639 958
640#if ECB_GCC_VERSION(3,1) 959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
641 #define ecb_attribute(attrlist) __attribute__(attrlist) 960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr) 966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 983#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality) 984 #define ecb_prefetch(addr,rw,locality)
650#endif 985#endif
651 986
652/* no emulation for ecb_decltype */ 987/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5) 988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
654 #define ecb_decltype(x) __decltype(x) 991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
655#elif ECB_GCC_VERSION(3,0) 992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
656 #define ecb_decltype(x) __typeof(x) 993 #define ecb_decltype(x) __typeof__ (x)
657#endif 994#endif
658 995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
659#define ecb_noinline ecb_attribute ((__noinline__)) 1013 #define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__)) 1014#endif
1015
661#define ecb_unused ecb_attribute ((__unused__)) 1016#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 1017#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__)) 1018#define ecb_pure ecb_attribute ((__pure__))
1019
1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
1028#else
1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
1030#endif
664 1031
665#if ECB_GCC_VERSION(4,3) 1032#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 1033 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 1034 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 1035 #define ecb_cold ecb_attribute ((__cold__))
… …
680/* for compatibility to the rest of the world */ 1047/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr) 1048#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr) 1049#define ecb_unlikely(expr) ecb_expect_false (expr)
683 1050
684/* count trailing zero bits and count # of one bits */ 1051/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4) 1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x) 1059 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x) 1060 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x) 1061 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */ 1062 /* no popcountll */
693#else 1063#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
695 ecb_function_ int 1065 ecb_function_ ecb_const int
696 ecb_ctz32 (uint32_t x) 1066 ecb_ctz32 (uint32_t x)
697 { 1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
698 int r = 0; 1073 int r = 0;
699 1074
700 x &= ~x + 1; /* this isolates the lowest bit */ 1075 x &= ~x + 1; /* this isolates the lowest bit */
701 1076
702#if ECB_branchless_on_i386 1077#if ECB_branchless_on_i386
… …
712 if (x & 0xff00ff00) r += 8; 1087 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16; 1088 if (x & 0xffff0000) r += 16;
714#endif 1089#endif
715 1090
716 return r; 1091 return r;
1092#endif
717 } 1093 }
718 1094
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
720 ecb_function_ int 1096 ecb_function_ ecb_const int
721 ecb_ctz64 (uint64_t x) 1097 ecb_ctz64 (uint64_t x)
722 { 1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
723 int shift = x & 0xffffffffU ? 0 : 32; 1104 int shift = x & 0xffffffff ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift; 1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
725 } 1107 }
726 1108
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
728 ecb_function_ int 1110 ecb_function_ ecb_const int
729 ecb_popcount32 (uint32_t x) 1111 ecb_popcount32 (uint32_t x)
730 { 1112 {
731 x -= (x >> 1) & 0x55555555; 1113 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f; 1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101; 1116 x *= 0x01010101;
735 1117
736 return x >> 24; 1118 return x >> 24;
737 } 1119 }
738 1120
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
740 ecb_function_ int ecb_ld32 (uint32_t x) 1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
741 { 1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
742 int r = 0; 1129 int r = 0;
743 1130
744 if (x >> 16) { x >>= 16; r += 16; } 1131 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; } 1132 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; } 1133 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; } 1134 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; } 1135 if (x >> 1) { r += 1; }
749 1136
750 return r; 1137 return r;
1138#endif
751 } 1139 }
752 1140
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
754 ecb_function_ int ecb_ld64 (uint64_t x) 1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
755 { 1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
756 int r = 0; 1149 int r = 0;
757 1150
758 if (x >> 32) { x >>= 32; r += 32; } 1151 if (x >> 32) { x >>= 32; r += 32; }
759 1152
760 return r + ecb_ld32 (x); 1153 return r + ecb_ld32 (x);
1154#endif
761 } 1155 }
762#endif 1156#endif
1157
1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1162
1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1165{
1166 return ( (x * 0x0802U & 0x22110U)
1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1168}
1169
1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1172{
1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1176 x = ( x >> 8 ) | ( x << 8);
1177
1178 return x;
1179}
1180
1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1183{
1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1188 x = ( x >> 16 ) | ( x << 16);
1189
1190 return x;
1191}
763 1192
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 1194/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
767ecb_function_ int 1196ecb_function_ ecb_const int
768ecb_popcount64 (uint64_t x) 1197ecb_popcount64 (uint64_t x)
769{ 1198{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771} 1200}
772 1201
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
781 1210
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790 1219
791#if ECB_GCC_VERSION(4,3) 1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
793 #define ecb_bswap32(x) __builtin_bswap32 (x) 1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x) 1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
795#else 1271#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
797 ecb_function_ uint16_t 1273 ecb_function_ ecb_const uint16_t
798 ecb_bswap16 (uint16_t x) 1274 ecb_bswap16 (uint16_t x)
799 { 1275 {
800 return ecb_rotl16 (x, 8); 1276 return ecb_rotl16 (x, 8);
801 } 1277 }
802 1278
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
804 ecb_function_ uint32_t 1280 ecb_function_ ecb_const uint32_t
805 ecb_bswap32 (uint32_t x) 1281 ecb_bswap32 (uint32_t x)
806 { 1282 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 } 1284 }
809 1285
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
811 ecb_function_ uint64_t 1287 ecb_function_ ecb_const uint64_t
812 ecb_bswap64 (uint64_t x) 1288 ecb_bswap64 (uint64_t x)
813 { 1289 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 } 1291 }
816#endif 1292#endif
817 1293
818#if ECB_GCC_VERSION(4,5) 1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
819 #define ecb_unreachable() __builtin_unreachable () 1295 #define ecb_unreachable() __builtin_unreachable ()
820#else 1296#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
823 ecb_function_ void ecb_unreachable (void) { } 1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
824#endif 1300#endif
825 1301
826/* try to tell the compiler that some condition is definitely true */ 1302/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1304
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
830ecb_function_ unsigned char 1306ecb_inline ecb_const uint32_t
831ecb_byteorder_helper (void) 1307ecb_byteorder_helper (void)
832{ 1308{
833 const uint32_t u = 0x11223344; 1309 /* the union code still generates code under pressure in gcc, */
834 return *(unsigned char *)&u; 1310 /* but less than using pointers, and always seems to */
1311 /* successfully return a constant. */
1312 /* the reason why we have this horrible preprocessor mess */
1313 /* is to avoid it in all cases, at least on common architectures */
1314 /* or when using a recent enough gcc version (>= 4.6) */
1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1318 return 0x44332211;
1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1322 return 0x11223344;
1323#else
1324 union
1325 {
1326 uint8_t c[4];
1327 uint32_t u;
1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1329 return u.u;
1330#endif
835} 1331}
836 1332
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
841 1409
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else 1412#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1414#endif
1415
1416#if ECB_CPP
1417 template<typename T>
1418 static inline T ecb_div_rd (T val, T div)
1419 {
1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1421 }
1422 template<typename T>
1423 static inline T ecb_div_ru (T val, T div)
1424 {
1425 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1426 }
1427#else
1428 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1429 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
846#endif 1430#endif
847 1431
848#if ecb_cplusplus_does_not_suck 1432#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1433 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N> 1434 template<typename T, int N>
… …
854 } 1438 }
855#else 1439#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif 1441#endif
858 1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1541/*******************************************************************************/
1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1543
1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1546#if 0 \
1547 || __i386 || __i386__ \
1548 || ECB_GCC_AMD64 \
1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1550 || defined __s390__ || defined __s390x__ \
1551 || defined __mips__ \
1552 || defined __alpha__ \
1553 || defined __hppa__ \
1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1561 #define ECB_STDFP 1
1562#else
1563 #define ECB_STDFP 0
1564#endif
1565
1566#ifndef ECB_NO_LIBM
1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1591 /* convert a float to ieee single/binary32 */
1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1593 ecb_function_ ecb_const uint32_t
1594 ecb_float_to_binary32 (float x)
1595 {
1596 uint32_t r;
1597
1598 #if ECB_STDFP
1599 memcpy (&r, &x, 4);
1600 #else
1601 /* slow emulation, works for anything but -0 */
1602 uint32_t m;
1603 int e;
1604
1605 if (x == 0e0f ) return 0x00000000U;
1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1608 if (x != x ) return 0x7fbfffffU;
1609
1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1611
1612 r = m & 0x80000000U;
1613
1614 if (r)
1615 m = -m;
1616
1617 if (e <= -126)
1618 {
1619 m &= 0xffffffU;
1620 m >>= (-125 - e);
1621 e = -126;
1622 }
1623
1624 r |= (e + 126) << 23;
1625 r |= m & 0x7fffffU;
1626 #endif
1627
1628 return r;
1629 }
1630
1631 /* converts an ieee single/binary32 to a float */
1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1633 ecb_function_ ecb_const float
1634 ecb_binary32_to_float (uint32_t x)
1635 {
1636 float r;
1637
1638 #if ECB_STDFP
1639 memcpy (&r, &x, 4);
1640 #else
1641 /* emulation, only works for normals and subnormals and +0 */
1642 int neg = x >> 31;
1643 int e = (x >> 23) & 0xffU;
1644
1645 x &= 0x7fffffU;
1646
1647 if (e)
1648 x |= 0x800000U;
1649 else
1650 e = 1;
1651
1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1654
1655 r = neg ? -r : r;
1656 #endif
1657
1658 return r;
1659 }
1660
1661 /* convert a double to ieee double/binary64 */
1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1663 ecb_function_ ecb_const uint64_t
1664 ecb_double_to_binary64 (double x)
1665 {
1666 uint64_t r;
1667
1668 #if ECB_STDFP
1669 memcpy (&r, &x, 8);
1670 #else
1671 /* slow emulation, works for anything but -0 */
1672 uint64_t m;
1673 int e;
1674
1675 if (x == 0e0 ) return 0x0000000000000000U;
1676 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1677 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1678 if (x != x ) return 0X7ff7ffffffffffffU;
1679
1680 m = frexp (x, &e) * 0x20000000000000U;
1681
1682 r = m & 0x8000000000000000;;
1683
1684 if (r)
1685 m = -m;
1686
1687 if (e <= -1022)
1688 {
1689 m &= 0x1fffffffffffffU;
1690 m >>= (-1021 - e);
1691 e = -1022;
1692 }
1693
1694 r |= ((uint64_t)(e + 1022)) << 52;
1695 r |= m & 0xfffffffffffffU;
1696 #endif
1697
1698 return r;
1699 }
1700
1701 /* converts an ieee double/binary64 to a double */
1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1703 ecb_function_ ecb_const double
1704 ecb_binary64_to_double (uint64_t x)
1705 {
1706 double r;
1707
1708 #if ECB_STDFP
1709 memcpy (&r, &x, 8);
1710 #else
1711 /* emulation, only works for normals and subnormals and +0 */
1712 int neg = x >> 63;
1713 int e = (x >> 52) & 0x7ffU;
1714
1715 x &= 0xfffffffffffffU;
1716
1717 if (e)
1718 x |= 0x10000000000000U;
1719 else
1720 e = 1;
1721
1722 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1723 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1724
1725 r = neg ? -r : r;
1726 #endif
1727
1728 return r;
1729 }
1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1747#endif
1748
859#endif 1749#endif
860 1750
861/* ECB.H END */ 1751/* ECB.H END */
862 1752
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
864/* if your architetcure doesn't need memory fences, e.g. because it is 1754/* if your architecture doesn't need memory fences, e.g. because it is
865 * single-cpu/core, or if you use libev in a project that doesn't use libev 1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
866 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
867 * libev, in which casess the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
868 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
869 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
870 */ 1760 */
871# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
872#endif 1762#endif
… …
875# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
876# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
877# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
878#endif 1768#endif
879 1769
880#define expect_false(cond) ecb_expect_false (cond)
881#define expect_true(cond) ecb_expect_true (cond)
882#define noinline ecb_noinline
883
884#define inline_size ecb_inline 1770#define inline_size ecb_inline
885 1771
886#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
887# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
888#else 1774#else
889# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
890#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
891 1843
892#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
893 1845
894#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
895# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
896#else 1848#else
897# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
898#endif 1850#endif
899 1851
900#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
901#define EMPTY2(a,b) /* used to suppress some warnings */
902 1853
903typedef ev_watcher *W; 1854typedef ev_watcher *W;
904typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
905typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
906 1857
… …
931# include "ev_win32.c" 1882# include "ev_win32.c"
932#endif 1883#endif
933 1884
934/*****************************************************************************/ 1885/*****************************************************************************/
935 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
936/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
937 1892
938#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
939# include <math.h> 1894# include <math.h>
940# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
941#else 1896#else
942 1897
943#include <float.h> 1898#include <float.h>
944 1899
945/* a floor() replacement function, should be independent of ev_tstamp type */ 1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
946static ev_tstamp noinline 1902static ev_tstamp
947ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
948{ 1904{
949 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
950#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
951 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
952#else 1908#else
953 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
954#endif 1910#endif
955 1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
956 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
957 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
958 { 1922 {
959 ev_tstamp f; 1923 ev_tstamp f;
960 1924
961 if (v == v - 1.) 1925 if (v == v - 1.)
962 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
963 1927
964 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
965 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
966 } 1930 }
967 1931
968 /* special treatment for negative args? */
969 if (expect_false (v < 0.))
970 {
971 ev_tstamp f = -ev_floor (-v);
972
973 return f - (f == v ? 0 : 1);
974 }
975
976 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
977 return (unsigned long)v; 1933 return (unsigned long)v;
978} 1934}
979 1935
980#endif 1936#endif
… …
983 1939
984#ifdef __linux 1940#ifdef __linux
985# include <sys/utsname.h> 1941# include <sys/utsname.h>
986#endif 1942#endif
987 1943
988static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
989ev_linux_version (void) 1946ev_linux_version (void)
990{ 1947{
991#ifdef __linux 1948#ifdef __linux
992 unsigned int v = 0; 1949 unsigned int v = 0;
993 struct utsname buf; 1950 struct utsname buf;
… …
1022} 1979}
1023 1980
1024/*****************************************************************************/ 1981/*****************************************************************************/
1025 1982
1026#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1027static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1028ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1029{ 1987{
1030 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1031} 1989}
1032#endif 1990#endif
1033 1991
1034static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1035 1993
1036void ecb_cold 1994ecb_cold
1995void
1037ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1038{ 1997{
1039 syserr_cb = cb; 1998 syserr_cb = cb;
1040} 1999}
1041 2000
1042static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1043ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1044{ 2004{
1045 if (!msg) 2005 if (!msg)
1046 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1047 2007
… …
1060 abort (); 2020 abort ();
1061 } 2021 }
1062} 2022}
1063 2023
1064static void * 2024static void *
1065ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1066{ 2026{
1067#if __GLIBC__
1068 return realloc (ptr, size);
1069#else
1070 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1071 * implement realloc (x, 0) (as required by both ansi c-89 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
1072 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
2030 * recently, also (at least) fedora and debian started breaking it,
2031 * despite documenting it otherwise.
1073 */ 2032 */
1074 2033
1075 if (size) 2034 if (size)
1076 return realloc (ptr, size); 2035 return realloc (ptr, size);
1077 2036
1078 free (ptr); 2037 free (ptr);
1079 return 0; 2038 return 0;
1080#endif
1081} 2039}
1082 2040
1083static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1084 2042
1085void ecb_cold 2043ecb_cold
2044void
1086ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1087{ 2046{
1088 alloc = cb; 2047 alloc = cb;
1089} 2048}
1090 2049
1091inline_speed void * 2050inline_speed void *
… …
1118typedef struct 2077typedef struct
1119{ 2078{
1120 WL head; 2079 WL head;
1121 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1122 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1123 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
1124 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1125#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1126 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1127#endif 2086#endif
1128#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1129 SOCKET handle; 2088 SOCKET handle;
… …
1179 #undef VAR 2138 #undef VAR
1180 }; 2139 };
1181 #include "ev_wrap.h" 2140 #include "ev_wrap.h"
1182 2141
1183 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1184 struct ev_loop *ev_default_loop_ptr; 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1185 2144
1186#else 2145#else
1187 2146
1188 ev_tstamp ev_rt_now; 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1189 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1190 #include "ev_vars.h" 2149 #include "ev_vars.h"
1191 #undef VAR 2150 #undef VAR
1192 2151
1193 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1194 2153
1195#endif 2154#endif
1196 2155
1197#if EV_FEATURE_API 2156#if EV_FEATURE_API
1198# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1199# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1200# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1201#else 2160#else
1202# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1203# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1204# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1208 2167
1209/*****************************************************************************/ 2168/*****************************************************************************/
1210 2169
1211#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1212ev_tstamp 2171ev_tstamp
1213ev_time (void) 2172ev_time (void) EV_NOEXCEPT
1214{ 2173{
1215#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1216 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1217 { 2176 {
1218 struct timespec ts; 2177 struct timespec ts;
1219 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1220 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1221 } 2180 }
1222#endif 2181#endif
1223 2182
2183 {
1224 struct timeval tv; 2184 struct timeval tv;
1225 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1226 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1227} 2188}
1228#endif 2189#endif
1229 2190
1230inline_size ev_tstamp 2191inline_size ev_tstamp
1231get_clock (void) 2192get_clock (void)
1232{ 2193{
1233#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1234 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1235 { 2196 {
1236 struct timespec ts; 2197 struct timespec ts;
1237 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1238 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1239 } 2200 }
1240#endif 2201#endif
1241 2202
1242 return ev_time (); 2203 return ev_time ();
1243} 2204}
1244 2205
1245#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1246ev_tstamp 2207ev_tstamp
1247ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
1248{ 2209{
1249 return ev_rt_now; 2210 return ev_rt_now;
1250} 2211}
1251#endif 2212#endif
1252 2213
1253void 2214void
1254ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1255{ 2216{
1256 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1257 { 2218 {
1258#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1259 struct timespec ts; 2220 struct timespec ts;
1260 2221
1261 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1262 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1263#elif defined(_WIN32) 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
1264 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1265#else 2228#else
1266 struct timeval tv; 2229 struct timeval tv;
1267 2230
1268 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1269 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1287 2250
1288 do 2251 do
1289 ncur <<= 1; 2252 ncur <<= 1;
1290 while (cnt > ncur); 2253 while (cnt > ncur);
1291 2254
1292 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2255 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1293 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2256 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1294 { 2257 {
1295 ncur *= elem; 2258 ncur *= elem;
1296 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2259 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1297 ncur = ncur - sizeof (void *) * 4; 2260 ncur = ncur - sizeof (void *) * 4;
… …
1299 } 2262 }
1300 2263
1301 return ncur; 2264 return ncur;
1302} 2265}
1303 2266
1304static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1305array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1306{ 2270{
1307 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1308 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1309} 2273}
1310 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1311#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1312 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1313 2279
1314#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1315 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1316 { \ 2282 { \
1317 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1318 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1319 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1320 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1321 } 2287 }
1322 2288
1323#if 0 2289#if 0
1324#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1325 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1334 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1335 2301
1336/*****************************************************************************/ 2302/*****************************************************************************/
1337 2303
1338/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1339static void noinline 2305ecb_noinline
2306static void
1340pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1341{ 2308{
1342} 2309}
1343 2310
1344void noinline 2311ecb_noinline
2312void
1345ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1346{ 2314{
1347 W w_ = (W)w; 2315 W w_ = (W)w;
1348 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1349 2317
1350 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1351 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1352 else 2320 else
1353 { 2321 {
1354 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1355 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1356 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1357 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1358 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
1359} 2329}
1360 2330
1361inline_speed void 2331inline_speed void
1362feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
1363{ 2333{
1364 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1365 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
1366} 2336}
1367 2337
1368inline_size void 2338inline_size void
1369feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
1404inline_speed void 2374inline_speed void
1405fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
1406{ 2376{
1407 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
1408 2378
1409 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
1410 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
1411} 2381}
1412 2382
1413void 2383void
1414ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1415{ 2385{
1416 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
1417 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
1418} 2388}
1419 2389
… …
1422inline_size void 2392inline_size void
1423fd_reify (EV_P) 2393fd_reify (EV_P)
1424{ 2394{
1425 int i; 2395 int i;
1426 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
1427#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1428 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
1429 { 2411 {
1430 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
1431 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
1432 2414
1433 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1447 } 2429 }
1448 } 2430 }
1449 } 2431 }
1450#endif 2432#endif
1451 2433
1452 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
1453 { 2435 {
1454 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
1455 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
1456 ev_io *w; 2438 ev_io *w;
1457 2439
1458 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
1459 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
1460 2442
1461 anfd->reify = 0; 2443 anfd->reify = 0;
1462 2444
1463 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1464 { 2446 {
1465 anfd->events = 0; 2447 anfd->events = 0;
1466 2448
1467 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1468 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1473 2455
1474 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1475 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1476 } 2458 }
1477 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
1478 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1479} 2468}
1480 2469
1481/* something about the given fd changed */ 2470/* something about the given fd changed */
1482inline_size void 2471inline_size
2472void
1483fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1484{ 2474{
1485 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1486 anfds [fd].reify |= flags; 2476 anfds [fd].reify |= flags;
1487 2477
1488 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1489 { 2479 {
1490 ++fdchangecnt; 2480 ++fdchangecnt;
1491 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1492 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1493 } 2483 }
1494} 2484}
1495 2485
1496/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1497inline_speed void ecb_cold 2487inline_speed ecb_cold void
1498fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1499{ 2489{
1500 ev_io *w; 2490 ev_io *w;
1501 2491
1502 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1505 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1506 } 2496 }
1507} 2497}
1508 2498
1509/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1510inline_size int ecb_cold 2500inline_size ecb_cold int
1511fd_valid (int fd) 2501fd_valid (int fd)
1512{ 2502{
1513#ifdef _WIN32 2503#ifdef _WIN32
1514 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1515#else 2505#else
1516 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1517#endif 2507#endif
1518} 2508}
1519 2509
1520/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1521static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
1522fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1523{ 2514{
1524 int fd; 2515 int fd;
1525 2516
1526 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1528 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1529 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1530} 2521}
1531 2522
1532/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
1533static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
1534fd_enomem (EV_P) 2526fd_enomem (EV_P)
1535{ 2527{
1536 int fd; 2528 int fd;
1537 2529
1538 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1542 break; 2534 break;
1543 } 2535 }
1544} 2536}
1545 2537
1546/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
1547static void noinline 2539ecb_noinline
2540static void
1548fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1549{ 2542{
1550 int fd; 2543 int fd;
1551 2544
1552 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1605 ev_tstamp minat; 2598 ev_tstamp minat;
1606 ANHE *minpos; 2599 ANHE *minpos;
1607 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1608 2601
1609 /* find minimum child */ 2602 /* find minimum child */
1610 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1611 { 2604 {
1612 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1613 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1614 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1615 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1616 } 2609 }
1617 else if (pos < E) 2610 else if (pos < E)
1618 { 2611 {
1619 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1620 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1621 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1622 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1623 } 2616 }
1624 else 2617 else
1625 break; 2618 break;
1626 2619
1627 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1635 2628
1636 heap [k] = he; 2629 heap [k] = he;
1637 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1638} 2631}
1639 2632
1640#else /* 4HEAP */ 2633#else /* not 4HEAP */
1641 2634
1642#define HEAP0 1 2635#define HEAP0 1
1643#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1644#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1645 2638
… …
1717 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1718} 2711}
1719 2712
1720/*****************************************************************************/ 2713/*****************************************************************************/
1721 2714
1722/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1723typedef struct 2716typedef struct
1724{ 2717{
1725 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
1726#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
1727 EV_P; 2720 EV_P;
… …
1733 2726
1734/*****************************************************************************/ 2727/*****************************************************************************/
1735 2728
1736#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1737 2730
1738static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
1739evpipe_init (EV_P) 2733evpipe_init (EV_P)
1740{ 2734{
1741 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
1742 { 2736 {
2737 int fds [2];
2738
1743# if EV_USE_EVENTFD 2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
1744 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1745 if (evfd < 0 && errno == EINVAL) 2742 if (fds [1] < 0 && errno == EINVAL)
1746 evfd = eventfd (0, 0); 2743 fds [1] = eventfd (0, 0);
1747 2744
1748 if (evfd >= 0) 2745 if (fds [1] < 0)
2746# endif
1749 { 2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
1750 evpipe [0] = -1; 2754 evpipe [0] = fds [0];
1751 fd_intern (evfd); /* doing it twice doesn't hurt */ 2755
1752 ev_io_set (&pipe_w, evfd, EV_READ); 2756 if (evpipe [1] < 0)
2757 evpipe [1] = fds [1]; /* first call, set write fd */
2758 else
2759 {
2760 /* on subsequent calls, do not change evpipe [1] */
2761 /* so that evpipe_write can always rely on its value. */
2762 /* this branch does not do anything sensible on windows, */
2763 /* so must not be executed on windows */
2764
2765 dup2 (fds [1], evpipe [1]);
2766 close (fds [1]);
2767 }
2768
2769 fd_intern (evpipe [1]);
2770
2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2772 ev_io_start (EV_A_ &pipe_w);
2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2774 }
2775}
2776
2777inline_speed void
2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2779{
2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2781
2782 if (ecb_expect_true (*flag))
2783 return;
2784
2785 *flag = 1;
2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2787
2788 pipe_write_skipped = 1;
2789
2790 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2791
2792 if (pipe_write_wanted)
2793 {
2794 int old_errno;
2795
2796 pipe_write_skipped = 0;
2797 ECB_MEMORY_FENCE_RELEASE;
2798
2799 old_errno = errno; /* save errno because write will clobber it */
2800
2801#if EV_USE_EVENTFD
2802 if (evpipe [0] < 0)
2803 {
2804 uint64_t counter = 1;
2805 write (evpipe [1], &counter, sizeof (uint64_t));
1753 } 2806 }
1754 else 2807 else
1755# endif 2808#endif
1756 { 2809 {
1757 while (pipe (evpipe)) 2810#ifdef _WIN32
1758 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1759 2812 DWORD sent;
1760 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1761 fd_intern (evpipe [1]); 2814 buf.len = 1;
1762 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1763 } 2816#else
1764
1765 ev_io_start (EV_A_ &pipe_w);
1766 ev_unref (EV_A); /* watcher should not keep loop alive */
1767 }
1768}
1769
1770inline_speed void
1771evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1772{
1773 if (expect_true (*flag))
1774 return;
1775
1776 *flag = 1;
1777
1778 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1779
1780 pipe_write_skipped = 1;
1781
1782 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1783
1784 if (pipe_write_wanted)
1785 {
1786 int old_errno;
1787
1788 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1789
1790 old_errno = errno; /* save errno because write will clobber it */
1791
1792#if EV_USE_EVENTFD
1793 if (evfd >= 0)
1794 {
1795 uint64_t counter = 1;
1796 write (evfd, &counter, sizeof (uint64_t));
1797 }
1798 else
1799#endif
1800 {
1801 /* win32 people keep sending patches that change this write() to send() */
1802 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1803 /* so when you think this write should be a send instead, please find out */
1804 /* where your send() is from - it's definitely not the microsoft send, and */
1805 /* tell me. thank you. */
1806 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1807 } 2819 }
1808 2820
1809 errno = old_errno; 2821 errno = old_errno;
1810 } 2822 }
1811} 2823}
… …
1818 int i; 2830 int i;
1819 2831
1820 if (revents & EV_READ) 2832 if (revents & EV_READ)
1821 { 2833 {
1822#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1823 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1824 { 2836 {
1825 uint64_t counter; 2837 uint64_t counter;
1826 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1827 } 2839 }
1828 else 2840 else
1829#endif 2841#endif
1830 { 2842 {
1831 char dummy; 2843 char dummy[4];
1832 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2844#ifdef _WIN32
2845 WSABUF buf;
2846 DWORD recvd;
2847 DWORD flags = 0;
2848 buf.buf = dummy;
2849 buf.len = sizeof (dummy);
2850 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2851#else
1833 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
1834 } 2854 }
1835 } 2855 }
1836 2856
1837 pipe_write_skipped = 0; 2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1838 2860
1839#if EV_SIGNAL_ENABLE 2861#if EV_SIGNAL_ENABLE
1840 if (sig_pending) 2862 if (sig_pending)
1841 { 2863 {
1842 sig_pending = 0; 2864 sig_pending = 0;
1843 2865
2866 ECB_MEMORY_FENCE;
2867
1844 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
1845 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
1846 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1847 } 2871 }
1848#endif 2872#endif
1849 2873
1850#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1851 if (async_pending) 2875 if (async_pending)
1852 { 2876 {
1853 async_pending = 0; 2877 async_pending = 0;
2878
2879 ECB_MEMORY_FENCE;
1854 2880
1855 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1856 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1857 { 2883 {
1858 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1859 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1860 } 2887 }
1861 } 2888 }
1862#endif 2889#endif
1863} 2890}
1864 2891
1865/*****************************************************************************/ 2892/*****************************************************************************/
1866 2893
1867void 2894void
1868ev_feed_signal (int signum) 2895ev_feed_signal (int signum) EV_NOEXCEPT
1869{ 2896{
1870#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
1871 EV_P = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
1872 2901
1873 if (!EV_A) 2902 if (!EV_A)
1874 return; 2903 return;
1875#endif 2904#endif
1876 2905
1877 if (!ev_active (&pipe_w))
1878 return;
1879
1880 signals [signum - 1].pending = 1; 2906 signals [signum - 1].pending = 1;
1881 evpipe_write (EV_A_ &sig_pending); 2907 evpipe_write (EV_A_ &sig_pending);
1882} 2908}
1883 2909
1884static void 2910static void
… …
1889#endif 2915#endif
1890 2916
1891 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
1892} 2918}
1893 2919
1894void noinline 2920ecb_noinline
2921void
1895ev_feed_signal_event (EV_P_ int signum) 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1896{ 2923{
1897 WL w; 2924 WL w;
1898 2925
1899 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1900 return; 2927 return;
1901 2928
1902 --signum; 2929 --signum;
1903 2930
1904#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1905 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
1906 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1907 2934
1908 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1909 return; 2936 return;
1910#endif 2937#endif
1911 2938
1912 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1913 2941
1914 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1915 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1916} 2944}
1917 2945
… …
1996 3024
1997#endif 3025#endif
1998 3026
1999/*****************************************************************************/ 3027/*****************************************************************************/
2000 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048 periodics_reschedule (EV_A);
3049}
3050
3051ecb_noinline ecb_cold
3052static void
3053evtimerfd_init (EV_P)
3054{
3055 if (!ev_is_active (&timerfd_w))
3056 {
3057 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3058
3059 if (timerfd >= 0)
3060 {
3061 fd_intern (timerfd); /* just to be sure */
3062
3063 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3064 ev_set_priority (&timerfd_w, EV_MINPRI);
3065 ev_io_start (EV_A_ &timerfd_w);
3066 ev_unref (EV_A); /* watcher should not keep loop alive */
3067
3068 /* (re-) arm timer */
3069 timerfdcb (EV_A_ 0, 0);
3070 }
3071 }
3072}
3073
3074#endif
3075
3076/*****************************************************************************/
3077
2001#if EV_USE_IOCP 3078#if EV_USE_IOCP
2002# include "ev_iocp.c" 3079# include "ev_iocp.c"
2003#endif 3080#endif
2004#if EV_USE_PORT 3081#if EV_USE_PORT
2005# include "ev_port.c" 3082# include "ev_port.c"
… …
2008# include "ev_kqueue.c" 3085# include "ev_kqueue.c"
2009#endif 3086#endif
2010#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
2011# include "ev_epoll.c" 3088# include "ev_epoll.c"
2012#endif 3089#endif
3090#if EV_USE_LINUXAIO
3091# include "ev_linuxaio.c"
3092#endif
3093#if EV_USE_IOURING
3094# include "ev_iouring.c"
3095#endif
2013#if EV_USE_POLL 3096#if EV_USE_POLL
2014# include "ev_poll.c" 3097# include "ev_poll.c"
2015#endif 3098#endif
2016#if EV_USE_SELECT 3099#if EV_USE_SELECT
2017# include "ev_select.c" 3100# include "ev_select.c"
2018#endif 3101#endif
2019 3102
2020int ecb_cold 3103ecb_cold int
2021ev_version_major (void) 3104ev_version_major (void) EV_NOEXCEPT
2022{ 3105{
2023 return EV_VERSION_MAJOR; 3106 return EV_VERSION_MAJOR;
2024} 3107}
2025 3108
2026int ecb_cold 3109ecb_cold int
2027ev_version_minor (void) 3110ev_version_minor (void) EV_NOEXCEPT
2028{ 3111{
2029 return EV_VERSION_MINOR; 3112 return EV_VERSION_MINOR;
2030} 3113}
2031 3114
2032/* return true if we are running with elevated privileges and should ignore env variables */ 3115/* return true if we are running with elevated privileges and should ignore env variables */
2033int inline_size ecb_cold 3116inline_size ecb_cold int
2034enable_secure (void) 3117enable_secure (void)
2035{ 3118{
2036#ifdef _WIN32 3119#ifdef _WIN32
2037 return 0; 3120 return 0;
2038#else 3121#else
2039 return getuid () != geteuid () 3122 return getuid () != geteuid ()
2040 || getgid () != getegid (); 3123 || getgid () != getegid ();
2041#endif 3124#endif
2042} 3125}
2043 3126
2044unsigned int ecb_cold 3127ecb_cold
3128unsigned int
2045ev_supported_backends (void) 3129ev_supported_backends (void) EV_NOEXCEPT
2046{ 3130{
2047 unsigned int flags = 0; 3131 unsigned int flags = 0;
2048 3132
2049 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3133 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2050 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3134 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2051 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3135 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2052 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3136 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2053 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3137 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2054 3138 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3139 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3140
2055 return flags; 3141 return flags;
2056} 3142}
2057 3143
2058unsigned int ecb_cold 3144ecb_cold
3145unsigned int
2059ev_recommended_backends (void) 3146ev_recommended_backends (void) EV_NOEXCEPT
2060{ 3147{
2061 unsigned int flags = ev_supported_backends (); 3148 unsigned int flags = ev_supported_backends ();
2062 3149
2063#ifndef __NetBSD__ 3150#ifndef __NetBSD__
2064 /* kqueue is borked on everything but netbsd apparently */ 3151 /* kqueue is borked on everything but netbsd apparently */
… …
2072#endif 3159#endif
2073#ifdef __FreeBSD__ 3160#ifdef __FreeBSD__
2074 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3161 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2075#endif 3162#endif
2076 3163
3164 /* TODO: linuxaio is very experimental */
3165#if !EV_RECOMMEND_LINUXAIO
3166 flags &= ~EVBACKEND_LINUXAIO;
3167#endif
3168 /* TODO: linuxaio is super experimental */
3169#if !EV_RECOMMEND_IOURING
3170 flags &= ~EVBACKEND_IOURING;
3171#endif
3172
2077 return flags; 3173 return flags;
2078} 3174}
2079 3175
2080unsigned int ecb_cold 3176ecb_cold
3177unsigned int
2081ev_embeddable_backends (void) 3178ev_embeddable_backends (void) EV_NOEXCEPT
2082{ 3179{
2083 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2084 3181
2085 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2086 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2087 flags &= ~EVBACKEND_EPOLL; 3184 flags &= ~EVBACKEND_EPOLL;
2088 3185
3186 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3187
2089 return flags; 3188 return flags;
2090} 3189}
2091 3190
2092unsigned int 3191unsigned int
2093ev_backend (EV_P) 3192ev_backend (EV_P) EV_NOEXCEPT
2094{ 3193{
2095 return backend; 3194 return backend;
2096} 3195}
2097 3196
2098#if EV_FEATURE_API 3197#if EV_FEATURE_API
2099unsigned int 3198unsigned int
2100ev_iteration (EV_P) 3199ev_iteration (EV_P) EV_NOEXCEPT
2101{ 3200{
2102 return loop_count; 3201 return loop_count;
2103} 3202}
2104 3203
2105unsigned int 3204unsigned int
2106ev_depth (EV_P) 3205ev_depth (EV_P) EV_NOEXCEPT
2107{ 3206{
2108 return loop_depth; 3207 return loop_depth;
2109} 3208}
2110 3209
2111void 3210void
2112ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3211ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2113{ 3212{
2114 io_blocktime = interval; 3213 io_blocktime = interval;
2115} 3214}
2116 3215
2117void 3216void
2118ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3217ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2119{ 3218{
2120 timeout_blocktime = interval; 3219 timeout_blocktime = interval;
2121} 3220}
2122 3221
2123void 3222void
2124ev_set_userdata (EV_P_ void *data) 3223ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2125{ 3224{
2126 userdata = data; 3225 userdata = data;
2127} 3226}
2128 3227
2129void * 3228void *
2130ev_userdata (EV_P) 3229ev_userdata (EV_P) EV_NOEXCEPT
2131{ 3230{
2132 return userdata; 3231 return userdata;
2133} 3232}
2134 3233
2135void 3234void
2136ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3235ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2137{ 3236{
2138 invoke_cb = invoke_pending_cb; 3237 invoke_cb = invoke_pending_cb;
2139} 3238}
2140 3239
2141void 3240void
2142ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3241ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2143{ 3242{
2144 release_cb = release; 3243 release_cb = release;
2145 acquire_cb = acquire; 3244 acquire_cb = acquire;
2146} 3245}
2147#endif 3246#endif
2148 3247
2149/* initialise a loop structure, must be zero-initialised */ 3248/* initialise a loop structure, must be zero-initialised */
2150static void noinline ecb_cold 3249ecb_noinline ecb_cold
3250static void
2151loop_init (EV_P_ unsigned int flags) 3251loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2152{ 3252{
2153 if (!backend) 3253 if (!backend)
2154 { 3254 {
2155 origflags = flags; 3255 origflags = flags;
2156 3256
… …
2201#if EV_ASYNC_ENABLE 3301#if EV_ASYNC_ENABLE
2202 async_pending = 0; 3302 async_pending = 0;
2203#endif 3303#endif
2204 pipe_write_skipped = 0; 3304 pipe_write_skipped = 0;
2205 pipe_write_wanted = 0; 3305 pipe_write_wanted = 0;
3306 evpipe [0] = -1;
3307 evpipe [1] = -1;
2206#if EV_USE_INOTIFY 3308#if EV_USE_INOTIFY
2207 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3309 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2208#endif 3310#endif
2209#if EV_USE_SIGNALFD 3311#if EV_USE_SIGNALFD
2210 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3312 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2211#endif 3313#endif
3314#if EV_USE_TIMERFD
3315 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3316#endif
2212 3317
2213 if (!(flags & EVBACKEND_MASK)) 3318 if (!(flags & EVBACKEND_MASK))
2214 flags |= ev_recommended_backends (); 3319 flags |= ev_recommended_backends ();
2215 3320
2216#if EV_USE_IOCP 3321#if EV_USE_IOCP
2217 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3322 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2218#endif 3323#endif
2219#if EV_USE_PORT 3324#if EV_USE_PORT
2220 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3325 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2221#endif 3326#endif
2222#if EV_USE_KQUEUE 3327#if EV_USE_KQUEUE
2223 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3329#endif
3330#if EV_USE_IOURING
3331 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3332#endif
3333#if EV_USE_LINUXAIO
3334 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2224#endif 3335#endif
2225#if EV_USE_EPOLL 3336#if EV_USE_EPOLL
2226 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3337 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2227#endif 3338#endif
2228#if EV_USE_POLL 3339#if EV_USE_POLL
2229 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3340 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2230#endif 3341#endif
2231#if EV_USE_SELECT 3342#if EV_USE_SELECT
2232 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2233#endif 3344#endif
2234 3345
2235 ev_prepare_init (&pending_w, pendingcb); 3346 ev_prepare_init (&pending_w, pendingcb);
2236 3347
2237#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3348#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2240#endif 3351#endif
2241 } 3352 }
2242} 3353}
2243 3354
2244/* free up a loop structure */ 3355/* free up a loop structure */
2245void ecb_cold 3356ecb_cold
3357void
2246ev_loop_destroy (EV_P) 3358ev_loop_destroy (EV_P)
2247{ 3359{
2248 int i; 3360 int i;
2249 3361
2250#if EV_MULTIPLICITY 3362#if EV_MULTIPLICITY
… …
2253 return; 3365 return;
2254#endif 3366#endif
2255 3367
2256#if EV_CLEANUP_ENABLE 3368#if EV_CLEANUP_ENABLE
2257 /* queue cleanup watchers (and execute them) */ 3369 /* queue cleanup watchers (and execute them) */
2258 if (expect_false (cleanupcnt)) 3370 if (ecb_expect_false (cleanupcnt))
2259 { 3371 {
2260 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3372 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2261 EV_INVOKE_PENDING; 3373 EV_INVOKE_PENDING;
2262 } 3374 }
2263#endif 3375#endif
2264 3376
2265#if EV_CHILD_ENABLE 3377#if EV_CHILD_ENABLE
2266 if (ev_is_active (&childev)) 3378 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2267 { 3379 {
2268 ev_ref (EV_A); /* child watcher */ 3380 ev_ref (EV_A); /* child watcher */
2269 ev_signal_stop (EV_A_ &childev); 3381 ev_signal_stop (EV_A_ &childev);
2270 } 3382 }
2271#endif 3383#endif
… …
2273 if (ev_is_active (&pipe_w)) 3385 if (ev_is_active (&pipe_w))
2274 { 3386 {
2275 /*ev_ref (EV_A);*/ 3387 /*ev_ref (EV_A);*/
2276 /*ev_io_stop (EV_A_ &pipe_w);*/ 3388 /*ev_io_stop (EV_A_ &pipe_w);*/
2277 3389
2278#if EV_USE_EVENTFD
2279 if (evfd >= 0)
2280 close (evfd);
2281#endif
2282
2283 if (evpipe [0] >= 0)
2284 {
2285 EV_WIN32_CLOSE_FD (evpipe [0]); 3390 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2286 EV_WIN32_CLOSE_FD (evpipe [1]); 3391 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2287 }
2288 } 3392 }
2289 3393
2290#if EV_USE_SIGNALFD 3394#if EV_USE_SIGNALFD
2291 if (ev_is_active (&sigfd_w)) 3395 if (ev_is_active (&sigfd_w))
2292 close (sigfd); 3396 close (sigfd);
2293#endif 3397#endif
2294 3398
3399#if EV_USE_TIMERFD
3400 if (ev_is_active (&timerfd_w))
3401 close (timerfd);
3402#endif
3403
2295#if EV_USE_INOTIFY 3404#if EV_USE_INOTIFY
2296 if (fs_fd >= 0) 3405 if (fs_fd >= 0)
2297 close (fs_fd); 3406 close (fs_fd);
2298#endif 3407#endif
2299 3408
2300 if (backend_fd >= 0) 3409 if (backend_fd >= 0)
2301 close (backend_fd); 3410 close (backend_fd);
2302 3411
2303#if EV_USE_IOCP 3412#if EV_USE_IOCP
2304 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3413 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2305#endif 3414#endif
2306#if EV_USE_PORT 3415#if EV_USE_PORT
2307 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3416 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2308#endif 3417#endif
2309#if EV_USE_KQUEUE 3418#if EV_USE_KQUEUE
2310 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3419 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3420#endif
3421#if EV_USE_IOURING
3422 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3423#endif
3424#if EV_USE_LINUXAIO
3425 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2311#endif 3426#endif
2312#if EV_USE_EPOLL 3427#if EV_USE_EPOLL
2313 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3428 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2314#endif 3429#endif
2315#if EV_USE_POLL 3430#if EV_USE_POLL
2316 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3431 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2317#endif 3432#endif
2318#if EV_USE_SELECT 3433#if EV_USE_SELECT
2319 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3434 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2320#endif 3435#endif
2321 3436
2322 for (i = NUMPRI; i--; ) 3437 for (i = NUMPRI; i--; )
2323 { 3438 {
2324 array_free (pending, [i]); 3439 array_free (pending, [i]);
… …
2366 3481
2367inline_size void 3482inline_size void
2368loop_fork (EV_P) 3483loop_fork (EV_P)
2369{ 3484{
2370#if EV_USE_PORT 3485#if EV_USE_PORT
2371 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3486 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2372#endif 3487#endif
2373#if EV_USE_KQUEUE 3488#if EV_USE_KQUEUE
2374 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3489 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3490#endif
3491#if EV_USE_IOURING
3492 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3493#endif
3494#if EV_USE_LINUXAIO
3495 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2375#endif 3496#endif
2376#if EV_USE_EPOLL 3497#if EV_USE_EPOLL
2377 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3498 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2378#endif 3499#endif
2379#if EV_USE_INOTIFY 3500#if EV_USE_INOTIFY
2380 infy_fork (EV_A); 3501 infy_fork (EV_A);
2381#endif 3502#endif
2382 3503
3504 if (postfork != 2)
3505 {
3506 #if EV_USE_SIGNALFD
3507 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3508 #endif
3509
3510 #if EV_USE_TIMERFD
3511 if (ev_is_active (&timerfd_w))
3512 {
3513 ev_ref (EV_A);
3514 ev_io_stop (EV_A_ &timerfd_w);
3515
3516 close (timerfd);
3517 timerfd = -2;
3518
3519 evtimerfd_init (EV_A);
3520 /* reschedule periodics, in case we missed something */
3521 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3522 }
3523 #endif
3524
3525 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2383 if (ev_is_active (&pipe_w)) 3526 if (ev_is_active (&pipe_w))
2384 { 3527 {
2385 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3528 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2386 3529
2387 ev_ref (EV_A); 3530 ev_ref (EV_A);
2388 ev_io_stop (EV_A_ &pipe_w); 3531 ev_io_stop (EV_A_ &pipe_w);
2389 3532
2390#if EV_USE_EVENTFD
2391 if (evfd >= 0)
2392 close (evfd);
2393#endif
2394
2395 if (evpipe [0] >= 0) 3533 if (evpipe [0] >= 0)
2396 {
2397 EV_WIN32_CLOSE_FD (evpipe [0]); 3534 EV_WIN32_CLOSE_FD (evpipe [0]);
2398 EV_WIN32_CLOSE_FD (evpipe [1]); 3535
3536 evpipe_init (EV_A);
3537 /* iterate over everything, in case we missed something before */
3538 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2399 } 3539 }
2400 3540 #endif
2401#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2402 evpipe_init (EV_A);
2403 /* now iterate over everything, in case we missed something */
2404 pipecb (EV_A_ &pipe_w, EV_READ);
2405#endif
2406 } 3541 }
2407 3542
2408 postfork = 0; 3543 postfork = 0;
2409} 3544}
2410 3545
2411#if EV_MULTIPLICITY 3546#if EV_MULTIPLICITY
2412 3547
3548ecb_cold
2413struct ev_loop * ecb_cold 3549struct ev_loop *
2414ev_loop_new (unsigned int flags) 3550ev_loop_new (unsigned int flags) EV_NOEXCEPT
2415{ 3551{
2416 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3552 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2417 3553
2418 memset (EV_A, 0, sizeof (struct ev_loop)); 3554 memset (EV_A, 0, sizeof (struct ev_loop));
2419 loop_init (EV_A_ flags); 3555 loop_init (EV_A_ flags);
… …
2426} 3562}
2427 3563
2428#endif /* multiplicity */ 3564#endif /* multiplicity */
2429 3565
2430#if EV_VERIFY 3566#if EV_VERIFY
2431static void noinline ecb_cold 3567ecb_noinline ecb_cold
3568static void
2432verify_watcher (EV_P_ W w) 3569verify_watcher (EV_P_ W w)
2433{ 3570{
2434 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3571 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2435 3572
2436 if (w->pending) 3573 if (w->pending)
2437 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3574 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2438} 3575}
2439 3576
2440static void noinline ecb_cold 3577ecb_noinline ecb_cold
3578static void
2441verify_heap (EV_P_ ANHE *heap, int N) 3579verify_heap (EV_P_ ANHE *heap, int N)
2442{ 3580{
2443 int i; 3581 int i;
2444 3582
2445 for (i = HEAP0; i < N + HEAP0; ++i) 3583 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2450 3588
2451 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3589 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2452 } 3590 }
2453} 3591}
2454 3592
2455static void noinline ecb_cold 3593ecb_noinline ecb_cold
3594static void
2456array_verify (EV_P_ W *ws, int cnt) 3595array_verify (EV_P_ W *ws, int cnt)
2457{ 3596{
2458 while (cnt--) 3597 while (cnt--)
2459 { 3598 {
2460 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3599 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2463} 3602}
2464#endif 3603#endif
2465 3604
2466#if EV_FEATURE_API 3605#if EV_FEATURE_API
2467void ecb_cold 3606void ecb_cold
2468ev_verify (EV_P) 3607ev_verify (EV_P) EV_NOEXCEPT
2469{ 3608{
2470#if EV_VERIFY 3609#if EV_VERIFY
2471 int i; 3610 int i;
2472 WL w; 3611 WL w, w2;
2473 3612
2474 assert (activecnt >= -1); 3613 assert (activecnt >= -1);
2475 3614
2476 assert (fdchangemax >= fdchangecnt); 3615 assert (fdchangemax >= fdchangecnt);
2477 for (i = 0; i < fdchangecnt; ++i) 3616 for (i = 0; i < fdchangecnt; ++i)
2478 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3617 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2479 3618
2480 assert (anfdmax >= 0); 3619 assert (anfdmax >= 0);
2481 for (i = 0; i < anfdmax; ++i) 3620 for (i = 0; i < anfdmax; ++i)
3621 {
3622 int j = 0;
3623
2482 for (w = anfds [i].head; w; w = w->next) 3624 for (w = w2 = anfds [i].head; w; w = w->next)
2483 { 3625 {
2484 verify_watcher (EV_A_ (W)w); 3626 verify_watcher (EV_A_ (W)w);
3627
3628 if (j++ & 1)
3629 {
3630 assert (("libev: io watcher list contains a loop", w != w2));
3631 w2 = w2->next;
3632 }
3633
2485 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3634 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2486 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3635 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2487 } 3636 }
3637 }
2488 3638
2489 assert (timermax >= timercnt); 3639 assert (timermax >= timercnt);
2490 verify_heap (EV_A_ timers, timercnt); 3640 verify_heap (EV_A_ timers, timercnt);
2491 3641
2492#if EV_PERIODIC_ENABLE 3642#if EV_PERIODIC_ENABLE
… …
2538#endif 3688#endif
2539} 3689}
2540#endif 3690#endif
2541 3691
2542#if EV_MULTIPLICITY 3692#if EV_MULTIPLICITY
3693ecb_cold
2543struct ev_loop * ecb_cold 3694struct ev_loop *
2544#else 3695#else
2545int 3696int
2546#endif 3697#endif
2547ev_default_loop (unsigned int flags) 3698ev_default_loop (unsigned int flags) EV_NOEXCEPT
2548{ 3699{
2549 if (!ev_default_loop_ptr) 3700 if (!ev_default_loop_ptr)
2550 { 3701 {
2551#if EV_MULTIPLICITY 3702#if EV_MULTIPLICITY
2552 EV_P = ev_default_loop_ptr = &default_loop_struct; 3703 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2571 3722
2572 return ev_default_loop_ptr; 3723 return ev_default_loop_ptr;
2573} 3724}
2574 3725
2575void 3726void
2576ev_loop_fork (EV_P) 3727ev_loop_fork (EV_P) EV_NOEXCEPT
2577{ 3728{
2578 postfork = 1; /* must be in line with ev_default_fork */ 3729 postfork = 1;
2579} 3730}
2580 3731
2581/*****************************************************************************/ 3732/*****************************************************************************/
2582 3733
2583void 3734void
… …
2585{ 3736{
2586 EV_CB_INVOKE ((W)w, revents); 3737 EV_CB_INVOKE ((W)w, revents);
2587} 3738}
2588 3739
2589unsigned int 3740unsigned int
2590ev_pending_count (EV_P) 3741ev_pending_count (EV_P) EV_NOEXCEPT
2591{ 3742{
2592 int pri; 3743 int pri;
2593 unsigned int count = 0; 3744 unsigned int count = 0;
2594 3745
2595 for (pri = NUMPRI; pri--; ) 3746 for (pri = NUMPRI; pri--; )
2596 count += pendingcnt [pri]; 3747 count += pendingcnt [pri];
2597 3748
2598 return count; 3749 return count;
2599} 3750}
2600 3751
2601void noinline 3752ecb_noinline
3753void
2602ev_invoke_pending (EV_P) 3754ev_invoke_pending (EV_P)
2603{ 3755{
2604 int pri; 3756 pendingpri = NUMPRI;
2605 3757
2606 for (pri = NUMPRI; pri--; ) 3758 do
3759 {
3760 --pendingpri;
3761
3762 /* pendingpri possibly gets modified in the inner loop */
2607 while (pendingcnt [pri]) 3763 while (pendingcnt [pendingpri])
2608 { 3764 {
2609 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3765 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2610 3766
2611 p->w->pending = 0; 3767 p->w->pending = 0;
2612 EV_CB_INVOKE (p->w, p->events); 3768 EV_CB_INVOKE (p->w, p->events);
2613 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
2614 } 3770 }
3771 }
3772 while (pendingpri);
2615} 3773}
2616 3774
2617#if EV_IDLE_ENABLE 3775#if EV_IDLE_ENABLE
2618/* make idle watchers pending. this handles the "call-idle */ 3776/* make idle watchers pending. this handles the "call-idle */
2619/* only when higher priorities are idle" logic */ 3777/* only when higher priorities are idle" logic */
2620inline_size void 3778inline_size void
2621idle_reify (EV_P) 3779idle_reify (EV_P)
2622{ 3780{
2623 if (expect_false (idleall)) 3781 if (ecb_expect_false (idleall))
2624 { 3782 {
2625 int pri; 3783 int pri;
2626 3784
2627 for (pri = NUMPRI; pri--; ) 3785 for (pri = NUMPRI; pri--; )
2628 { 3786 {
… …
2658 { 3816 {
2659 ev_at (w) += w->repeat; 3817 ev_at (w) += w->repeat;
2660 if (ev_at (w) < mn_now) 3818 if (ev_at (w) < mn_now)
2661 ev_at (w) = mn_now; 3819 ev_at (w) = mn_now;
2662 3820
2663 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3821 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2664 3822
2665 ANHE_at_cache (timers [HEAP0]); 3823 ANHE_at_cache (timers [HEAP0]);
2666 downheap (timers, timercnt, HEAP0); 3824 downheap (timers, timercnt, HEAP0);
2667 } 3825 }
2668 else 3826 else
… …
2677 } 3835 }
2678} 3836}
2679 3837
2680#if EV_PERIODIC_ENABLE 3838#if EV_PERIODIC_ENABLE
2681 3839
2682static void noinline 3840ecb_noinline
3841static void
2683periodic_recalc (EV_P_ ev_periodic *w) 3842periodic_recalc (EV_P_ ev_periodic *w)
2684{ 3843{
2685 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3844 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2686 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3845 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2687 3846
… …
2689 while (at <= ev_rt_now) 3848 while (at <= ev_rt_now)
2690 { 3849 {
2691 ev_tstamp nat = at + w->interval; 3850 ev_tstamp nat = at + w->interval;
2692 3851
2693 /* when resolution fails us, we use ev_rt_now */ 3852 /* when resolution fails us, we use ev_rt_now */
2694 if (expect_false (nat == at)) 3853 if (ecb_expect_false (nat == at))
2695 { 3854 {
2696 at = ev_rt_now; 3855 at = ev_rt_now;
2697 break; 3856 break;
2698 } 3857 }
2699 3858
… …
2709{ 3868{
2710 EV_FREQUENT_CHECK; 3869 EV_FREQUENT_CHECK;
2711 3870
2712 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3871 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2713 { 3872 {
2714 int feed_count = 0;
2715
2716 do 3873 do
2717 { 3874 {
2718 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3875 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2719 3876
2720 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3877 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2747 } 3904 }
2748} 3905}
2749 3906
2750/* simply recalculate all periodics */ 3907/* simply recalculate all periodics */
2751/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3908/* TODO: maybe ensure that at least one event happens when jumping forward? */
2752static void noinline ecb_cold 3909ecb_noinline ecb_cold
3910static void
2753periodics_reschedule (EV_P) 3911periodics_reschedule (EV_P)
2754{ 3912{
2755 int i; 3913 int i;
2756 3914
2757 /* adjust periodics after time jump */ 3915 /* adjust periodics after time jump */
… …
2770 reheap (periodics, periodiccnt); 3928 reheap (periodics, periodiccnt);
2771} 3929}
2772#endif 3930#endif
2773 3931
2774/* adjust all timers by a given offset */ 3932/* adjust all timers by a given offset */
2775static void noinline ecb_cold 3933ecb_noinline ecb_cold
3934static void
2776timers_reschedule (EV_P_ ev_tstamp adjust) 3935timers_reschedule (EV_P_ ev_tstamp adjust)
2777{ 3936{
2778 int i; 3937 int i;
2779 3938
2780 for (i = 0; i < timercnt; ++i) 3939 for (i = 0; i < timercnt; ++i)
… …
2789/* also detect if there was a timejump, and act accordingly */ 3948/* also detect if there was a timejump, and act accordingly */
2790inline_speed void 3949inline_speed void
2791time_update (EV_P_ ev_tstamp max_block) 3950time_update (EV_P_ ev_tstamp max_block)
2792{ 3951{
2793#if EV_USE_MONOTONIC 3952#if EV_USE_MONOTONIC
2794 if (expect_true (have_monotonic)) 3953 if (ecb_expect_true (have_monotonic))
2795 { 3954 {
2796 int i; 3955 int i;
2797 ev_tstamp odiff = rtmn_diff; 3956 ev_tstamp odiff = rtmn_diff;
2798 3957
2799 mn_now = get_clock (); 3958 mn_now = get_clock ();
2800 3959
2801 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2802 /* interpolate in the meantime */ 3961 /* interpolate in the meantime */
2803 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3962 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2804 { 3963 {
2805 ev_rt_now = rtmn_diff + mn_now; 3964 ev_rt_now = rtmn_diff + mn_now;
2806 return; 3965 return;
2807 } 3966 }
2808 3967
… …
2822 ev_tstamp diff; 3981 ev_tstamp diff;
2823 rtmn_diff = ev_rt_now - mn_now; 3982 rtmn_diff = ev_rt_now - mn_now;
2824 3983
2825 diff = odiff - rtmn_diff; 3984 diff = odiff - rtmn_diff;
2826 3985
2827 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3986 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2828 return; /* all is well */ 3987 return; /* all is well */
2829 3988
2830 ev_rt_now = ev_time (); 3989 ev_rt_now = ev_time ();
2831 mn_now = get_clock (); 3990 mn_now = get_clock ();
2832 now_floor = mn_now; 3991 now_floor = mn_now;
… …
2841 else 4000 else
2842#endif 4001#endif
2843 { 4002 {
2844 ev_rt_now = ev_time (); 4003 ev_rt_now = ev_time ();
2845 4004
2846 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4005 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2847 { 4006 {
2848 /* adjust timers. this is easy, as the offset is the same for all of them */ 4007 /* adjust timers. this is easy, as the offset is the same for all of them */
2849 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4008 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2850#if EV_PERIODIC_ENABLE 4009#if EV_PERIODIC_ENABLE
2851 periodics_reschedule (EV_A); 4010 periodics_reschedule (EV_A);
… …
2854 4013
2855 mn_now = ev_rt_now; 4014 mn_now = ev_rt_now;
2856 } 4015 }
2857} 4016}
2858 4017
2859void 4018int
2860ev_run (EV_P_ int flags) 4019ev_run (EV_P_ int flags)
2861{ 4020{
2862#if EV_FEATURE_API 4021#if EV_FEATURE_API
2863 ++loop_depth; 4022 ++loop_depth;
2864#endif 4023#endif
… …
2874#if EV_VERIFY >= 2 4033#if EV_VERIFY >= 2
2875 ev_verify (EV_A); 4034 ev_verify (EV_A);
2876#endif 4035#endif
2877 4036
2878#ifndef _WIN32 4037#ifndef _WIN32
2879 if (expect_false (curpid)) /* penalise the forking check even more */ 4038 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2880 if (expect_false (getpid () != curpid)) 4039 if (ecb_expect_false (getpid () != curpid))
2881 { 4040 {
2882 curpid = getpid (); 4041 curpid = getpid ();
2883 postfork = 1; 4042 postfork = 1;
2884 } 4043 }
2885#endif 4044#endif
2886 4045
2887#if EV_FORK_ENABLE 4046#if EV_FORK_ENABLE
2888 /* we might have forked, so queue fork handlers */ 4047 /* we might have forked, so queue fork handlers */
2889 if (expect_false (postfork)) 4048 if (ecb_expect_false (postfork))
2890 if (forkcnt) 4049 if (forkcnt)
2891 { 4050 {
2892 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2893 EV_INVOKE_PENDING; 4052 EV_INVOKE_PENDING;
2894 } 4053 }
2895#endif 4054#endif
2896 4055
2897#if EV_PREPARE_ENABLE 4056#if EV_PREPARE_ENABLE
2898 /* queue prepare watchers (and execute them) */ 4057 /* queue prepare watchers (and execute them) */
2899 if (expect_false (preparecnt)) 4058 if (ecb_expect_false (preparecnt))
2900 { 4059 {
2901 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2902 EV_INVOKE_PENDING; 4061 EV_INVOKE_PENDING;
2903 } 4062 }
2904#endif 4063#endif
2905 4064
2906 if (expect_false (loop_done)) 4065 if (ecb_expect_false (loop_done))
2907 break; 4066 break;
2908 4067
2909 /* we might have forked, so reify kernel state if necessary */ 4068 /* we might have forked, so reify kernel state if necessary */
2910 if (expect_false (postfork)) 4069 if (ecb_expect_false (postfork))
2911 loop_fork (EV_A); 4070 loop_fork (EV_A);
2912 4071
2913 /* update fd-related kernel structures */ 4072 /* update fd-related kernel structures */
2914 fd_reify (EV_A); 4073 fd_reify (EV_A);
2915 4074
… …
2920 4079
2921 /* remember old timestamp for io_blocktime calculation */ 4080 /* remember old timestamp for io_blocktime calculation */
2922 ev_tstamp prev_mn_now = mn_now; 4081 ev_tstamp prev_mn_now = mn_now;
2923 4082
2924 /* update time to cancel out callback processing overhead */ 4083 /* update time to cancel out callback processing overhead */
2925 time_update (EV_A_ 1e100); 4084 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2926 4085
2927 /* from now on, we want a pipe-wake-up */ 4086 /* from now on, we want a pipe-wake-up */
2928 pipe_write_wanted = 1; 4087 pipe_write_wanted = 1;
2929 4088
2930 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2931 4090
2932 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4091 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2933 { 4092 {
2934 waittime = MAX_BLOCKTIME; 4093 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4094
4095#if EV_USE_TIMERFD
4096 /* sleep a lot longer when we can reliably detect timejumps */
4097 if (ecb_expect_true (timerfd >= 0))
4098 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4099#endif
2935 4100
2936 if (timercnt) 4101 if (timercnt)
2937 { 4102 {
2938 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4103 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2939 if (waittime > to) waittime = to; 4104 if (waittime > to) waittime = to;
… …
2946 if (waittime > to) waittime = to; 4111 if (waittime > to) waittime = to;
2947 } 4112 }
2948#endif 4113#endif
2949 4114
2950 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4115 /* don't let timeouts decrease the waittime below timeout_blocktime */
2951 if (expect_false (waittime < timeout_blocktime)) 4116 if (ecb_expect_false (waittime < timeout_blocktime))
2952 waittime = timeout_blocktime; 4117 waittime = timeout_blocktime;
2953 4118
2954 /* at this point, we NEED to wait, so we have to ensure */ 4119 /* now there are two more special cases left, either we have
2955 /* to pass a minimum nonzero value to the backend */ 4120 * already-expired timers, so we should not sleep, or we have timers
4121 * that expire very soon, in which case we need to wait for a minimum
4122 * amount of time for some event loop backends.
4123 */
2956 if (expect_false (waittime < backend_mintime)) 4124 if (ecb_expect_false (waittime < backend_mintime))
4125 waittime = waittime <= EV_TS_CONST (0.)
4126 ? EV_TS_CONST (0.)
2957 waittime = backend_mintime; 4127 : backend_mintime;
2958 4128
2959 /* extra check because io_blocktime is commonly 0 */ 4129 /* extra check because io_blocktime is commonly 0 */
2960 if (expect_false (io_blocktime)) 4130 if (ecb_expect_false (io_blocktime))
2961 { 4131 {
2962 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4132 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2963 4133
2964 if (sleeptime > waittime - backend_mintime) 4134 if (sleeptime > waittime - backend_mintime)
2965 sleeptime = waittime - backend_mintime; 4135 sleeptime = waittime - backend_mintime;
2966 4136
2967 if (expect_true (sleeptime > 0.)) 4137 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2968 { 4138 {
2969 ev_sleep (sleeptime); 4139 ev_sleep (sleeptime);
2970 waittime -= sleeptime; 4140 waittime -= sleeptime;
2971 } 4141 }
2972 } 4142 }
… …
2977#endif 4147#endif
2978 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 4148 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2979 backend_poll (EV_A_ waittime); 4149 backend_poll (EV_A_ waittime);
2980 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4150 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2981 4151
2982 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 4152 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2983 4153
4154 ECB_MEMORY_FENCE_ACQUIRE;
2984 if (pipe_write_skipped) 4155 if (pipe_write_skipped)
2985 { 4156 {
2986 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4157 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2987 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4158 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2988 } 4159 }
2989 4160
2990
2991 /* update ev_rt_now, do magic */ 4161 /* update ev_rt_now, do magic */
2992 time_update (EV_A_ waittime + sleeptime); 4162 time_update (EV_A_ waittime + sleeptime);
2993 } 4163 }
2994 4164
2995 /* queue pending timers and reschedule them */ 4165 /* queue pending timers and reschedule them */
… …
3003 idle_reify (EV_A); 4173 idle_reify (EV_A);
3004#endif 4174#endif
3005 4175
3006#if EV_CHECK_ENABLE 4176#if EV_CHECK_ENABLE
3007 /* queue check watchers, to be executed first */ 4177 /* queue check watchers, to be executed first */
3008 if (expect_false (checkcnt)) 4178 if (ecb_expect_false (checkcnt))
3009 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4179 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3010#endif 4180#endif
3011 4181
3012 EV_INVOKE_PENDING; 4182 EV_INVOKE_PENDING;
3013 } 4183 }
3014 while (expect_true ( 4184 while (ecb_expect_true (
3015 activecnt 4185 activecnt
3016 && !loop_done 4186 && !loop_done
3017 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4187 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3018 )); 4188 ));
3019 4189
… …
3021 loop_done = EVBREAK_CANCEL; 4191 loop_done = EVBREAK_CANCEL;
3022 4192
3023#if EV_FEATURE_API 4193#if EV_FEATURE_API
3024 --loop_depth; 4194 --loop_depth;
3025#endif 4195#endif
4196
4197 return activecnt;
3026} 4198}
3027 4199
3028void 4200void
3029ev_break (EV_P_ int how) 4201ev_break (EV_P_ int how) EV_NOEXCEPT
3030{ 4202{
3031 loop_done = how; 4203 loop_done = how;
3032} 4204}
3033 4205
3034void 4206void
3035ev_ref (EV_P) 4207ev_ref (EV_P) EV_NOEXCEPT
3036{ 4208{
3037 ++activecnt; 4209 ++activecnt;
3038} 4210}
3039 4211
3040void 4212void
3041ev_unref (EV_P) 4213ev_unref (EV_P) EV_NOEXCEPT
3042{ 4214{
3043 --activecnt; 4215 --activecnt;
3044} 4216}
3045 4217
3046void 4218void
3047ev_now_update (EV_P) 4219ev_now_update (EV_P) EV_NOEXCEPT
3048{ 4220{
3049 time_update (EV_A_ 1e100); 4221 time_update (EV_A_ EV_TSTAMP_HUGE);
3050} 4222}
3051 4223
3052void 4224void
3053ev_suspend (EV_P) 4225ev_suspend (EV_P) EV_NOEXCEPT
3054{ 4226{
3055 ev_now_update (EV_A); 4227 ev_now_update (EV_A);
3056} 4228}
3057 4229
3058void 4230void
3059ev_resume (EV_P) 4231ev_resume (EV_P) EV_NOEXCEPT
3060{ 4232{
3061 ev_tstamp mn_prev = mn_now; 4233 ev_tstamp mn_prev = mn_now;
3062 4234
3063 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3064 timers_reschedule (EV_A_ mn_now - mn_prev); 4236 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3081inline_size void 4253inline_size void
3082wlist_del (WL *head, WL elem) 4254wlist_del (WL *head, WL elem)
3083{ 4255{
3084 while (*head) 4256 while (*head)
3085 { 4257 {
3086 if (expect_true (*head == elem)) 4258 if (ecb_expect_true (*head == elem))
3087 { 4259 {
3088 *head = elem->next; 4260 *head = elem->next;
3089 break; 4261 break;
3090 } 4262 }
3091 4263
… …
3103 w->pending = 0; 4275 w->pending = 0;
3104 } 4276 }
3105} 4277}
3106 4278
3107int 4279int
3108ev_clear_pending (EV_P_ void *w) 4280ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3109{ 4281{
3110 W w_ = (W)w; 4282 W w_ = (W)w;
3111 int pending = w_->pending; 4283 int pending = w_->pending;
3112 4284
3113 if (expect_true (pending)) 4285 if (ecb_expect_true (pending))
3114 { 4286 {
3115 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4287 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3116 p->w = (W)&pending_w; 4288 p->w = (W)&pending_w;
3117 w_->pending = 0; 4289 w_->pending = 0;
3118 return p->events; 4290 return p->events;
… …
3145 w->active = 0; 4317 w->active = 0;
3146} 4318}
3147 4319
3148/*****************************************************************************/ 4320/*****************************************************************************/
3149 4321
3150void noinline 4322ecb_noinline
4323void
3151ev_io_start (EV_P_ ev_io *w) 4324ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3152{ 4325{
3153 int fd = w->fd; 4326 int fd = w->fd;
3154 4327
3155 if (expect_false (ev_is_active (w))) 4328 if (ecb_expect_false (ev_is_active (w)))
3156 return; 4329 return;
3157 4330
3158 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4331 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3159 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4332 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3160 4333
4334#if EV_VERIFY >= 2
4335 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4336#endif
3161 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
3162 4338
3163 ev_start (EV_A_ (W)w, 1); 4339 ev_start (EV_A_ (W)w, 1);
3164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4340 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3165 wlist_add (&anfds[fd].head, (WL)w); 4341 wlist_add (&anfds[fd].head, (WL)w);
4342
4343 /* common bug, apparently */
4344 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3166 4345
3167 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4346 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3168 w->events &= ~EV__IOFDSET; 4347 w->events &= ~EV__IOFDSET;
3169 4348
3170 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
3171} 4350}
3172 4351
3173void noinline 4352ecb_noinline
4353void
3174ev_io_stop (EV_P_ ev_io *w) 4354ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3175{ 4355{
3176 clear_pending (EV_A_ (W)w); 4356 clear_pending (EV_A_ (W)w);
3177 if (expect_false (!ev_is_active (w))) 4357 if (ecb_expect_false (!ev_is_active (w)))
3178 return; 4358 return;
3179 4359
3180 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4360 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3181 4361
4362#if EV_VERIFY >= 2
4363 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4364#endif
3182 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3183 4366
3184 wlist_del (&anfds[w->fd].head, (WL)w); 4367 wlist_del (&anfds[w->fd].head, (WL)w);
3185 ev_stop (EV_A_ (W)w); 4368 ev_stop (EV_A_ (W)w);
3186 4369
3187 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4370 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3188 4371
3189 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3190} 4373}
3191 4374
3192void noinline 4375ecb_noinline
4376void
3193ev_timer_start (EV_P_ ev_timer *w) 4377ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3194{ 4378{
3195 if (expect_false (ev_is_active (w))) 4379 if (ecb_expect_false (ev_is_active (w)))
3196 return; 4380 return;
3197 4381
3198 ev_at (w) += mn_now; 4382 ev_at (w) += mn_now;
3199 4383
3200 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4384 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3201 4385
3202 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
3203 4387
3204 ++timercnt; 4388 ++timercnt;
3205 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4389 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3206 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4390 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3207 ANHE_w (timers [ev_active (w)]) = (WT)w; 4391 ANHE_w (timers [ev_active (w)]) = (WT)w;
3208 ANHE_at_cache (timers [ev_active (w)]); 4392 ANHE_at_cache (timers [ev_active (w)]);
3209 upheap (timers, ev_active (w)); 4393 upheap (timers, ev_active (w));
3210 4394
3211 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
3212 4396
3213 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4397 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3214} 4398}
3215 4399
3216void noinline 4400ecb_noinline
4401void
3217ev_timer_stop (EV_P_ ev_timer *w) 4402ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3218{ 4403{
3219 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3220 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3221 return; 4406 return;
3222 4407
3223 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3224 4409
3225 { 4410 {
… …
3227 4412
3228 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4413 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3229 4414
3230 --timercnt; 4415 --timercnt;
3231 4416
3232 if (expect_true (active < timercnt + HEAP0)) 4417 if (ecb_expect_true (active < timercnt + HEAP0))
3233 { 4418 {
3234 timers [active] = timers [timercnt + HEAP0]; 4419 timers [active] = timers [timercnt + HEAP0];
3235 adjustheap (timers, timercnt, active); 4420 adjustheap (timers, timercnt, active);
3236 } 4421 }
3237 } 4422 }
… …
3241 ev_stop (EV_A_ (W)w); 4426 ev_stop (EV_A_ (W)w);
3242 4427
3243 EV_FREQUENT_CHECK; 4428 EV_FREQUENT_CHECK;
3244} 4429}
3245 4430
3246void noinline 4431ecb_noinline
4432void
3247ev_timer_again (EV_P_ ev_timer *w) 4433ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3248{ 4434{
3249 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
4436
4437 clear_pending (EV_A_ (W)w);
3250 4438
3251 if (ev_is_active (w)) 4439 if (ev_is_active (w))
3252 { 4440 {
3253 if (w->repeat) 4441 if (w->repeat)
3254 { 4442 {
… …
3267 4455
3268 EV_FREQUENT_CHECK; 4456 EV_FREQUENT_CHECK;
3269} 4457}
3270 4458
3271ev_tstamp 4459ev_tstamp
3272ev_timer_remaining (EV_P_ ev_timer *w) 4460ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3273{ 4461{
3274 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4462 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3275} 4463}
3276 4464
3277#if EV_PERIODIC_ENABLE 4465#if EV_PERIODIC_ENABLE
3278void noinline 4466ecb_noinline
4467void
3279ev_periodic_start (EV_P_ ev_periodic *w) 4468ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3280{ 4469{
3281 if (expect_false (ev_is_active (w))) 4470 if (ecb_expect_false (ev_is_active (w)))
3282 return; 4471 return;
4472
4473#if EV_USE_TIMERFD
4474 if (timerfd == -2)
4475 evtimerfd_init (EV_A);
4476#endif
3283 4477
3284 if (w->reschedule_cb) 4478 if (w->reschedule_cb)
3285 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4479 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3286 else if (w->interval) 4480 else if (w->interval)
3287 { 4481 {
… …
3293 4487
3294 EV_FREQUENT_CHECK; 4488 EV_FREQUENT_CHECK;
3295 4489
3296 ++periodiccnt; 4490 ++periodiccnt;
3297 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4491 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3298 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4492 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3299 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4493 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3300 ANHE_at_cache (periodics [ev_active (w)]); 4494 ANHE_at_cache (periodics [ev_active (w)]);
3301 upheap (periodics, ev_active (w)); 4495 upheap (periodics, ev_active (w));
3302 4496
3303 EV_FREQUENT_CHECK; 4497 EV_FREQUENT_CHECK;
3304 4498
3305 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4499 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3306} 4500}
3307 4501
3308void noinline 4502ecb_noinline
4503void
3309ev_periodic_stop (EV_P_ ev_periodic *w) 4504ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3310{ 4505{
3311 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
3312 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
3313 return; 4508 return;
3314 4509
3315 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
3316 4511
3317 { 4512 {
… …
3319 4514
3320 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4515 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3321 4516
3322 --periodiccnt; 4517 --periodiccnt;
3323 4518
3324 if (expect_true (active < periodiccnt + HEAP0)) 4519 if (ecb_expect_true (active < periodiccnt + HEAP0))
3325 { 4520 {
3326 periodics [active] = periodics [periodiccnt + HEAP0]; 4521 periodics [active] = periodics [periodiccnt + HEAP0];
3327 adjustheap (periodics, periodiccnt, active); 4522 adjustheap (periodics, periodiccnt, active);
3328 } 4523 }
3329 } 4524 }
… …
3331 ev_stop (EV_A_ (W)w); 4526 ev_stop (EV_A_ (W)w);
3332 4527
3333 EV_FREQUENT_CHECK; 4528 EV_FREQUENT_CHECK;
3334} 4529}
3335 4530
3336void noinline 4531ecb_noinline
4532void
3337ev_periodic_again (EV_P_ ev_periodic *w) 4533ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3338{ 4534{
3339 /* TODO: use adjustheap and recalculation */ 4535 /* TODO: use adjustheap and recalculation */
3340 ev_periodic_stop (EV_A_ w); 4536 ev_periodic_stop (EV_A_ w);
3341 ev_periodic_start (EV_A_ w); 4537 ev_periodic_start (EV_A_ w);
3342} 4538}
… …
3346# define SA_RESTART 0 4542# define SA_RESTART 0
3347#endif 4543#endif
3348 4544
3349#if EV_SIGNAL_ENABLE 4545#if EV_SIGNAL_ENABLE
3350 4546
3351void noinline 4547ecb_noinline
4548void
3352ev_signal_start (EV_P_ ev_signal *w) 4549ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3353{ 4550{
3354 if (expect_false (ev_is_active (w))) 4551 if (ecb_expect_false (ev_is_active (w)))
3355 return; 4552 return;
3356 4553
3357 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4554 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3358 4555
3359#if EV_MULTIPLICITY 4556#if EV_MULTIPLICITY
3360 assert (("libev: a signal must not be attached to two different loops", 4557 assert (("libev: a signal must not be attached to two different loops",
3361 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4558 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3362 4559
3363 signals [w->signum - 1].loop = EV_A; 4560 signals [w->signum - 1].loop = EV_A;
4561 ECB_MEMORY_FENCE_RELEASE;
3364#endif 4562#endif
3365 4563
3366 EV_FREQUENT_CHECK; 4564 EV_FREQUENT_CHECK;
3367 4565
3368#if EV_USE_SIGNALFD 4566#if EV_USE_SIGNALFD
… …
3427 } 4625 }
3428 4626
3429 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
3430} 4628}
3431 4629
3432void noinline 4630ecb_noinline
4631void
3433ev_signal_stop (EV_P_ ev_signal *w) 4632ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3434{ 4633{
3435 clear_pending (EV_A_ (W)w); 4634 clear_pending (EV_A_ (W)w);
3436 if (expect_false (!ev_is_active (w))) 4635 if (ecb_expect_false (!ev_is_active (w)))
3437 return; 4636 return;
3438 4637
3439 EV_FREQUENT_CHECK; 4638 EV_FREQUENT_CHECK;
3440 4639
3441 wlist_del (&signals [w->signum - 1].head, (WL)w); 4640 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3469#endif 4668#endif
3470 4669
3471#if EV_CHILD_ENABLE 4670#if EV_CHILD_ENABLE
3472 4671
3473void 4672void
3474ev_child_start (EV_P_ ev_child *w) 4673ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3475{ 4674{
3476#if EV_MULTIPLICITY 4675#if EV_MULTIPLICITY
3477 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4676 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3478#endif 4677#endif
3479 if (expect_false (ev_is_active (w))) 4678 if (ecb_expect_false (ev_is_active (w)))
3480 return; 4679 return;
3481 4680
3482 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
3483 4682
3484 ev_start (EV_A_ (W)w, 1); 4683 ev_start (EV_A_ (W)w, 1);
… …
3486 4685
3487 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
3488} 4687}
3489 4688
3490void 4689void
3491ev_child_stop (EV_P_ ev_child *w) 4690ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3492{ 4691{
3493 clear_pending (EV_A_ (W)w); 4692 clear_pending (EV_A_ (W)w);
3494 if (expect_false (!ev_is_active (w))) 4693 if (ecb_expect_false (!ev_is_active (w)))
3495 return; 4694 return;
3496 4695
3497 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
3498 4697
3499 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4698 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3513 4712
3514#define DEF_STAT_INTERVAL 5.0074891 4713#define DEF_STAT_INTERVAL 5.0074891
3515#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4714#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3516#define MIN_STAT_INTERVAL 0.1074891 4715#define MIN_STAT_INTERVAL 0.1074891
3517 4716
3518static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4717ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3519 4718
3520#if EV_USE_INOTIFY 4719#if EV_USE_INOTIFY
3521 4720
3522/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4721/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3523# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4722# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3524 4723
3525static void noinline 4724ecb_noinline
4725static void
3526infy_add (EV_P_ ev_stat *w) 4726infy_add (EV_P_ ev_stat *w)
3527{ 4727{
3528 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); 4728 w->wd = inotify_add_watch (fs_fd, w->path,
4729 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4730 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4731 | IN_DONT_FOLLOW | IN_MASK_ADD);
3529 4732
3530 if (w->wd >= 0) 4733 if (w->wd >= 0)
3531 { 4734 {
3532 struct statfs sfs; 4735 struct statfs sfs;
3533 4736
… …
3537 4740
3538 if (!fs_2625) 4741 if (!fs_2625)
3539 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4742 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3540 else if (!statfs (w->path, &sfs) 4743 else if (!statfs (w->path, &sfs)
3541 && (sfs.f_type == 0x1373 /* devfs */ 4744 && (sfs.f_type == 0x1373 /* devfs */
4745 || sfs.f_type == 0x4006 /* fat */
4746 || sfs.f_type == 0x4d44 /* msdos */
3542 || sfs.f_type == 0xEF53 /* ext2/3 */ 4747 || sfs.f_type == 0xEF53 /* ext2/3 */
4748 || sfs.f_type == 0x72b6 /* jffs2 */
4749 || sfs.f_type == 0x858458f6 /* ramfs */
4750 || sfs.f_type == 0x5346544e /* ntfs */
3543 || sfs.f_type == 0x3153464a /* jfs */ 4751 || sfs.f_type == 0x3153464a /* jfs */
4752 || sfs.f_type == 0x9123683e /* btrfs */
3544 || sfs.f_type == 0x52654973 /* reiser3 */ 4753 || sfs.f_type == 0x52654973 /* reiser3 */
3545 || sfs.f_type == 0x01021994 /* tempfs */ 4754 || sfs.f_type == 0x01021994 /* tmpfs */
3546 || sfs.f_type == 0x58465342 /* xfs */)) 4755 || sfs.f_type == 0x58465342 /* xfs */))
3547 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4756 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3548 else 4757 else
3549 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4758 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3550 } 4759 }
… …
3585 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4794 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3586 ev_timer_again (EV_A_ &w->timer); 4795 ev_timer_again (EV_A_ &w->timer);
3587 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4796 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3588} 4797}
3589 4798
3590static void noinline 4799ecb_noinline
4800static void
3591infy_del (EV_P_ ev_stat *w) 4801infy_del (EV_P_ ev_stat *w)
3592{ 4802{
3593 int slot; 4803 int slot;
3594 int wd = w->wd; 4804 int wd = w->wd;
3595 4805
… …
3602 4812
3603 /* remove this watcher, if others are watching it, they will rearm */ 4813 /* remove this watcher, if others are watching it, they will rearm */
3604 inotify_rm_watch (fs_fd, wd); 4814 inotify_rm_watch (fs_fd, wd);
3605} 4815}
3606 4816
3607static void noinline 4817ecb_noinline
4818static void
3608infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4819infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3609{ 4820{
3610 if (slot < 0) 4821 if (slot < 0)
3611 /* overflow, need to check for all hash slots */ 4822 /* overflow, need to check for all hash slots */
3612 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4823 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3648 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4859 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3649 ofs += sizeof (struct inotify_event) + ev->len; 4860 ofs += sizeof (struct inotify_event) + ev->len;
3650 } 4861 }
3651} 4862}
3652 4863
3653inline_size void ecb_cold 4864inline_size ecb_cold
4865void
3654ev_check_2625 (EV_P) 4866ev_check_2625 (EV_P)
3655{ 4867{
3656 /* kernels < 2.6.25 are borked 4868 /* kernels < 2.6.25 are borked
3657 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4869 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3658 */ 4870 */
… …
3663} 4875}
3664 4876
3665inline_size int 4877inline_size int
3666infy_newfd (void) 4878infy_newfd (void)
3667{ 4879{
3668#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4880#if defined IN_CLOEXEC && defined IN_NONBLOCK
3669 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4881 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3670 if (fd >= 0) 4882 if (fd >= 0)
3671 return fd; 4883 return fd;
3672#endif 4884#endif
3673 return inotify_init (); 4885 return inotify_init ();
… …
3748#else 4960#else
3749# define EV_LSTAT(p,b) lstat (p, b) 4961# define EV_LSTAT(p,b) lstat (p, b)
3750#endif 4962#endif
3751 4963
3752void 4964void
3753ev_stat_stat (EV_P_ ev_stat *w) 4965ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3754{ 4966{
3755 if (lstat (w->path, &w->attr) < 0) 4967 if (lstat (w->path, &w->attr) < 0)
3756 w->attr.st_nlink = 0; 4968 w->attr.st_nlink = 0;
3757 else if (!w->attr.st_nlink) 4969 else if (!w->attr.st_nlink)
3758 w->attr.st_nlink = 1; 4970 w->attr.st_nlink = 1;
3759} 4971}
3760 4972
3761static void noinline 4973ecb_noinline
4974static void
3762stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4975stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3763{ 4976{
3764 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4977 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3765 4978
3766 ev_statdata prev = w->attr; 4979 ev_statdata prev = w->attr;
… …
3797 ev_feed_event (EV_A_ w, EV_STAT); 5010 ev_feed_event (EV_A_ w, EV_STAT);
3798 } 5011 }
3799} 5012}
3800 5013
3801void 5014void
3802ev_stat_start (EV_P_ ev_stat *w) 5015ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3803{ 5016{
3804 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
3805 return; 5018 return;
3806 5019
3807 ev_stat_stat (EV_A_ w); 5020 ev_stat_stat (EV_A_ w);
3808 5021
3809 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5022 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3828 5041
3829 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
3830} 5043}
3831 5044
3832void 5045void
3833ev_stat_stop (EV_P_ ev_stat *w) 5046ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3834{ 5047{
3835 clear_pending (EV_A_ (W)w); 5048 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w))) 5049 if (ecb_expect_false (!ev_is_active (w)))
3837 return; 5050 return;
3838 5051
3839 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
3840 5053
3841#if EV_USE_INOTIFY 5054#if EV_USE_INOTIFY
… …
3854} 5067}
3855#endif 5068#endif
3856 5069
3857#if EV_IDLE_ENABLE 5070#if EV_IDLE_ENABLE
3858void 5071void
3859ev_idle_start (EV_P_ ev_idle *w) 5072ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3860{ 5073{
3861 if (expect_false (ev_is_active (w))) 5074 if (ecb_expect_false (ev_is_active (w)))
3862 return; 5075 return;
3863 5076
3864 pri_adjust (EV_A_ (W)w); 5077 pri_adjust (EV_A_ (W)w);
3865 5078
3866 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
… …
3869 int active = ++idlecnt [ABSPRI (w)]; 5082 int active = ++idlecnt [ABSPRI (w)];
3870 5083
3871 ++idleall; 5084 ++idleall;
3872 ev_start (EV_A_ (W)w, active); 5085 ev_start (EV_A_ (W)w, active);
3873 5086
3874 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5087 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3875 idles [ABSPRI (w)][active - 1] = w; 5088 idles [ABSPRI (w)][active - 1] = w;
3876 } 5089 }
3877 5090
3878 EV_FREQUENT_CHECK; 5091 EV_FREQUENT_CHECK;
3879} 5092}
3880 5093
3881void 5094void
3882ev_idle_stop (EV_P_ ev_idle *w) 5095ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3883{ 5096{
3884 clear_pending (EV_A_ (W)w); 5097 clear_pending (EV_A_ (W)w);
3885 if (expect_false (!ev_is_active (w))) 5098 if (ecb_expect_false (!ev_is_active (w)))
3886 return; 5099 return;
3887 5100
3888 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
3889 5102
3890 { 5103 {
… …
3901} 5114}
3902#endif 5115#endif
3903 5116
3904#if EV_PREPARE_ENABLE 5117#if EV_PREPARE_ENABLE
3905void 5118void
3906ev_prepare_start (EV_P_ ev_prepare *w) 5119ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3907{ 5120{
3908 if (expect_false (ev_is_active (w))) 5121 if (ecb_expect_false (ev_is_active (w)))
3909 return; 5122 return;
3910 5123
3911 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
3912 5125
3913 ev_start (EV_A_ (W)w, ++preparecnt); 5126 ev_start (EV_A_ (W)w, ++preparecnt);
3914 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5127 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3915 prepares [preparecnt - 1] = w; 5128 prepares [preparecnt - 1] = w;
3916 5129
3917 EV_FREQUENT_CHECK; 5130 EV_FREQUENT_CHECK;
3918} 5131}
3919 5132
3920void 5133void
3921ev_prepare_stop (EV_P_ ev_prepare *w) 5134ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3922{ 5135{
3923 clear_pending (EV_A_ (W)w); 5136 clear_pending (EV_A_ (W)w);
3924 if (expect_false (!ev_is_active (w))) 5137 if (ecb_expect_false (!ev_is_active (w)))
3925 return; 5138 return;
3926 5139
3927 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
3928 5141
3929 { 5142 {
… …
3939} 5152}
3940#endif 5153#endif
3941 5154
3942#if EV_CHECK_ENABLE 5155#if EV_CHECK_ENABLE
3943void 5156void
3944ev_check_start (EV_P_ ev_check *w) 5157ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3945{ 5158{
3946 if (expect_false (ev_is_active (w))) 5159 if (ecb_expect_false (ev_is_active (w)))
3947 return; 5160 return;
3948 5161
3949 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
3950 5163
3951 ev_start (EV_A_ (W)w, ++checkcnt); 5164 ev_start (EV_A_ (W)w, ++checkcnt);
3952 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5165 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3953 checks [checkcnt - 1] = w; 5166 checks [checkcnt - 1] = w;
3954 5167
3955 EV_FREQUENT_CHECK; 5168 EV_FREQUENT_CHECK;
3956} 5169}
3957 5170
3958void 5171void
3959ev_check_stop (EV_P_ ev_check *w) 5172ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3960{ 5173{
3961 clear_pending (EV_A_ (W)w); 5174 clear_pending (EV_A_ (W)w);
3962 if (expect_false (!ev_is_active (w))) 5175 if (ecb_expect_false (!ev_is_active (w)))
3963 return; 5176 return;
3964 5177
3965 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
3966 5179
3967 { 5180 {
… …
3976 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
3977} 5190}
3978#endif 5191#endif
3979 5192
3980#if EV_EMBED_ENABLE 5193#if EV_EMBED_ENABLE
3981void noinline 5194ecb_noinline
5195void
3982ev_embed_sweep (EV_P_ ev_embed *w) 5196ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3983{ 5197{
3984 ev_run (w->other, EVRUN_NOWAIT); 5198 ev_run (w->other, EVRUN_NOWAIT);
3985} 5199}
3986 5200
3987static void 5201static void
… …
4009 ev_run (EV_A_ EVRUN_NOWAIT); 5223 ev_run (EV_A_ EVRUN_NOWAIT);
4010 } 5224 }
4011 } 5225 }
4012} 5226}
4013 5227
5228#if EV_FORK_ENABLE
4014static void 5229static void
4015embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5230embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4016{ 5231{
4017 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5232 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4018 5233
… …
4025 ev_run (EV_A_ EVRUN_NOWAIT); 5240 ev_run (EV_A_ EVRUN_NOWAIT);
4026 } 5241 }
4027 5242
4028 ev_embed_start (EV_A_ w); 5243 ev_embed_start (EV_A_ w);
4029} 5244}
5245#endif
4030 5246
4031#if 0 5247#if 0
4032static void 5248static void
4033embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5249embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4034{ 5250{
4035 ev_idle_stop (EV_A_ idle); 5251 ev_idle_stop (EV_A_ idle);
4036} 5252}
4037#endif 5253#endif
4038 5254
4039void 5255void
4040ev_embed_start (EV_P_ ev_embed *w) 5256ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4041{ 5257{
4042 if (expect_false (ev_is_active (w))) 5258 if (ecb_expect_false (ev_is_active (w)))
4043 return; 5259 return;
4044 5260
4045 { 5261 {
4046 EV_P = w->other; 5262 EV_P = w->other;
4047 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5263 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4055 5271
4056 ev_prepare_init (&w->prepare, embed_prepare_cb); 5272 ev_prepare_init (&w->prepare, embed_prepare_cb);
4057 ev_set_priority (&w->prepare, EV_MINPRI); 5273 ev_set_priority (&w->prepare, EV_MINPRI);
4058 ev_prepare_start (EV_A_ &w->prepare); 5274 ev_prepare_start (EV_A_ &w->prepare);
4059 5275
5276#if EV_FORK_ENABLE
4060 ev_fork_init (&w->fork, embed_fork_cb); 5277 ev_fork_init (&w->fork, embed_fork_cb);
4061 ev_fork_start (EV_A_ &w->fork); 5278 ev_fork_start (EV_A_ &w->fork);
5279#endif
4062 5280
4063 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5281 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4064 5282
4065 ev_start (EV_A_ (W)w, 1); 5283 ev_start (EV_A_ (W)w, 1);
4066 5284
4067 EV_FREQUENT_CHECK; 5285 EV_FREQUENT_CHECK;
4068} 5286}
4069 5287
4070void 5288void
4071ev_embed_stop (EV_P_ ev_embed *w) 5289ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4072{ 5290{
4073 clear_pending (EV_A_ (W)w); 5291 clear_pending (EV_A_ (W)w);
4074 if (expect_false (!ev_is_active (w))) 5292 if (ecb_expect_false (!ev_is_active (w)))
4075 return; 5293 return;
4076 5294
4077 EV_FREQUENT_CHECK; 5295 EV_FREQUENT_CHECK;
4078 5296
4079 ev_io_stop (EV_A_ &w->io); 5297 ev_io_stop (EV_A_ &w->io);
4080 ev_prepare_stop (EV_A_ &w->prepare); 5298 ev_prepare_stop (EV_A_ &w->prepare);
5299#if EV_FORK_ENABLE
4081 ev_fork_stop (EV_A_ &w->fork); 5300 ev_fork_stop (EV_A_ &w->fork);
5301#endif
4082 5302
4083 ev_stop (EV_A_ (W)w); 5303 ev_stop (EV_A_ (W)w);
4084 5304
4085 EV_FREQUENT_CHECK; 5305 EV_FREQUENT_CHECK;
4086} 5306}
4087#endif 5307#endif
4088 5308
4089#if EV_FORK_ENABLE 5309#if EV_FORK_ENABLE
4090void 5310void
4091ev_fork_start (EV_P_ ev_fork *w) 5311ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4092{ 5312{
4093 if (expect_false (ev_is_active (w))) 5313 if (ecb_expect_false (ev_is_active (w)))
4094 return; 5314 return;
4095 5315
4096 EV_FREQUENT_CHECK; 5316 EV_FREQUENT_CHECK;
4097 5317
4098 ev_start (EV_A_ (W)w, ++forkcnt); 5318 ev_start (EV_A_ (W)w, ++forkcnt);
4099 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5319 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4100 forks [forkcnt - 1] = w; 5320 forks [forkcnt - 1] = w;
4101 5321
4102 EV_FREQUENT_CHECK; 5322 EV_FREQUENT_CHECK;
4103} 5323}
4104 5324
4105void 5325void
4106ev_fork_stop (EV_P_ ev_fork *w) 5326ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4107{ 5327{
4108 clear_pending (EV_A_ (W)w); 5328 clear_pending (EV_A_ (W)w);
4109 if (expect_false (!ev_is_active (w))) 5329 if (ecb_expect_false (!ev_is_active (w)))
4110 return; 5330 return;
4111 5331
4112 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4113 5333
4114 { 5334 {
… …
4124} 5344}
4125#endif 5345#endif
4126 5346
4127#if EV_CLEANUP_ENABLE 5347#if EV_CLEANUP_ENABLE
4128void 5348void
4129ev_cleanup_start (EV_P_ ev_cleanup *w) 5349ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4130{ 5350{
4131 if (expect_false (ev_is_active (w))) 5351 if (ecb_expect_false (ev_is_active (w)))
4132 return; 5352 return;
4133 5353
4134 EV_FREQUENT_CHECK; 5354 EV_FREQUENT_CHECK;
4135 5355
4136 ev_start (EV_A_ (W)w, ++cleanupcnt); 5356 ev_start (EV_A_ (W)w, ++cleanupcnt);
4137 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5357 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4138 cleanups [cleanupcnt - 1] = w; 5358 cleanups [cleanupcnt - 1] = w;
4139 5359
4140 /* cleanup watchers should never keep a refcount on the loop */ 5360 /* cleanup watchers should never keep a refcount on the loop */
4141 ev_unref (EV_A); 5361 ev_unref (EV_A);
4142 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4143} 5363}
4144 5364
4145void 5365void
4146ev_cleanup_stop (EV_P_ ev_cleanup *w) 5366ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4147{ 5367{
4148 clear_pending (EV_A_ (W)w); 5368 clear_pending (EV_A_ (W)w);
4149 if (expect_false (!ev_is_active (w))) 5369 if (ecb_expect_false (!ev_is_active (w)))
4150 return; 5370 return;
4151 5371
4152 EV_FREQUENT_CHECK; 5372 EV_FREQUENT_CHECK;
4153 ev_ref (EV_A); 5373 ev_ref (EV_A);
4154 5374
… …
4165} 5385}
4166#endif 5386#endif
4167 5387
4168#if EV_ASYNC_ENABLE 5388#if EV_ASYNC_ENABLE
4169void 5389void
4170ev_async_start (EV_P_ ev_async *w) 5390ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4171{ 5391{
4172 if (expect_false (ev_is_active (w))) 5392 if (ecb_expect_false (ev_is_active (w)))
4173 return; 5393 return;
4174 5394
4175 w->sent = 0; 5395 w->sent = 0;
4176 5396
4177 evpipe_init (EV_A); 5397 evpipe_init (EV_A);
4178 5398
4179 EV_FREQUENT_CHECK; 5399 EV_FREQUENT_CHECK;
4180 5400
4181 ev_start (EV_A_ (W)w, ++asynccnt); 5401 ev_start (EV_A_ (W)w, ++asynccnt);
4182 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5402 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4183 asyncs [asynccnt - 1] = w; 5403 asyncs [asynccnt - 1] = w;
4184 5404
4185 EV_FREQUENT_CHECK; 5405 EV_FREQUENT_CHECK;
4186} 5406}
4187 5407
4188void 5408void
4189ev_async_stop (EV_P_ ev_async *w) 5409ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4190{ 5410{
4191 clear_pending (EV_A_ (W)w); 5411 clear_pending (EV_A_ (W)w);
4192 if (expect_false (!ev_is_active (w))) 5412 if (ecb_expect_false (!ev_is_active (w)))
4193 return; 5413 return;
4194 5414
4195 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4196 5416
4197 { 5417 {
… …
4205 5425
4206 EV_FREQUENT_CHECK; 5426 EV_FREQUENT_CHECK;
4207} 5427}
4208 5428
4209void 5429void
4210ev_async_send (EV_P_ ev_async *w) 5430ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4211{ 5431{
4212 w->sent = 1; 5432 w->sent = 1;
4213 evpipe_write (EV_A_ &async_pending); 5433 evpipe_write (EV_A_ &async_pending);
4214} 5434}
4215#endif 5435#endif
… …
4252 5472
4253 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5473 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4254} 5474}
4255 5475
4256void 5476void
4257ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5477ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4258{ 5478{
4259 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5479 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4260
4261 if (expect_false (!once))
4262 {
4263 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4264 return;
4265 }
4266 5480
4267 once->cb = cb; 5481 once->cb = cb;
4268 once->arg = arg; 5482 once->arg = arg;
4269 5483
4270 ev_init (&once->io, once_cb_io); 5484 ev_init (&once->io, once_cb_io);
… …
4283} 5497}
4284 5498
4285/*****************************************************************************/ 5499/*****************************************************************************/
4286 5500
4287#if EV_WALK_ENABLE 5501#if EV_WALK_ENABLE
4288void ecb_cold 5502ecb_cold
5503void
4289ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5504ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4290{ 5505{
4291 int i, j; 5506 int i, j;
4292 ev_watcher_list *wl, *wn; 5507 ev_watcher_list *wl, *wn;
4293 5508
4294 if (types & (EV_IO | EV_EMBED)) 5509 if (types & (EV_IO | EV_EMBED))
… …
4400 5615
4401#if EV_MULTIPLICITY 5616#if EV_MULTIPLICITY
4402 #include "ev_wrap.h" 5617 #include "ev_wrap.h"
4403#endif 5618#endif
4404 5619
4405EV_CPP(})
4406

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