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Comparing libev/ev.c (file contents):
Revision 1.398 by root, Sun Sep 25 21:27:35 2011 UTC vs.
Revision 1.521 by root, Sat Dec 28 07:47:35 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 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) */
465 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# define EV_TS_FROM_USEC(us) us * 1e-6
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 597# 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) 598# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
468 602
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
471/* 605/*
472 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
473 * 607 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 609 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 610 * All rights reserved.
477 * 611 *
478 * Redistribution and use in source and binary forms, with or without modifica- 612 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 613 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 629 * 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 630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
498 */ 643 */
499 644
500#ifndef ECB_H 645#ifndef ECB_H
501#define ECB_H 646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
502 650
503#ifdef _WIN32 651#ifdef _WIN32
504 typedef signed char int8_t; 652 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 660 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 661 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 662 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 663 typedef unsigned __int64 uint64_t;
516 #endif 664 #endif
665 #ifdef _WIN64
666 #define ECB_PTRSIZE 8
667 typedef uint64_t uintptr_t;
668 typedef int64_t intptr_t;
669 #else
670 #define ECB_PTRSIZE 4
671 typedef uint32_t uintptr_t;
672 typedef int32_t intptr_t;
673 #endif
517#else 674#else
518 #include <inttypes.h> 675 #include <inttypes.h>
676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
677 #define ECB_PTRSIZE 8
678 #else
679 #define ECB_PTRSIZE 4
680 #endif
681#endif
682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
686/* work around x32 idiocy by defining proper macros */
687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
688 #if _ILP32
689 #define ECB_AMD64_X32 1
690 #else
691 #define ECB_AMD64 1
692 #endif
519#endif 693#endif
520 694
521/* many compilers define _GNUC_ to some versions but then only implement 695/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 696 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 697 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 698 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 699 * 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. 700 * an issue with that they should have done it right in the first place.
527 */ 701 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 703 #define ECB_GCC_VERSION(major,minor) 0
531 #else 704#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
722#define ECB_CPP (__cplusplus+0)
723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
738
739#if ECB_CPP
740 #define ECB_EXTERN_C extern "C"
741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
742 #define ECB_EXTERN_C_END }
743#else
744 #define ECB_EXTERN_C extern
745 #define ECB_EXTERN_C_BEG
746 #define ECB_EXTERN_C_END
534#endif 747#endif
535 748
536/*****************************************************************************/ 749/*****************************************************************************/
537 750
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 751/* 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 */ 752/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 753
541#if ECB_NO_THREADS || ECB_NO_SMP 754#if ECB_NO_THREADS
755 #define ECB_NO_SMP 1
756#endif
757
758#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
543#endif 760#endif
544 761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
545#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
547 #if __i386__ 774 #if __i386 || __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 775 #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 */ 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
551 #elif __amd64 778 #elif ECB_GCC_AMD64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 780 #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 */ 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 794 #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__ ) \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
563 #endif 823 #endif
564 #endif 824 #endif
565#endif 825#endif
566 826
567#ifndef ECB_MEMORY_FENCE 827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 855 #elif defined _WIN32
578 #include <WinNT.h> 856 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
859 #include <mbarrier.h>
860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
580 #endif 877 #endif
581#endif 878#endif
582 879
583#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 893 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) 894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif 895 #endif
599#endif 896#endif
600 897
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 900#endif
604 901
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 904#endif
608 905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
609/*****************************************************************************/ 910/*****************************************************************************/
610 911
611#define ECB_C99 (__STDC_VERSION__ >= 199901L) 912#if ECB_CPP
612
613#if __cplusplus
614 #define ecb_inline static inline 913 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
617#elif ECB_C99 916#elif ECB_C99
618 #define ecb_inline static inline 917 #define ecb_inline static inline
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632 931
633#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
637 937
638#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
639 939
640#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
641 #define ecb_attribute(attrlist) __attribute__(attrlist) 941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr) 947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 964#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) 965 #define ecb_prefetch(addr,rw,locality)
650#endif 966#endif
651 967
652/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5) 969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
654 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
655#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
656 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
657#endif 975#endif
658 976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
659#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__)) 995#endif
996
661#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__)) 999#define ecb_pure ecb_attribute ((__pure__))
1000
1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
1009#else
1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
1011#endif
664 1012
665#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 1014 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 1015 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 1016 #define ecb_cold ecb_attribute ((__cold__))
… …
680/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
683 1031
684/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4) 1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */ 1043 /* no popcountll */
693#else 1044#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
695 ecb_function_ int 1046 ecb_function_ ecb_const int
696 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
697 { 1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
698 int r = 0; 1054 int r = 0;
699 1055
700 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
701 1057
702#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
712 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
714#endif 1070#endif
715 1071
716 return r; 1072 return r;
1073#endif
717 } 1074 }
718 1075
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
720 ecb_function_ int 1077 ecb_function_ ecb_const int
721 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
722 { 1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
723 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
725 } 1088 }
726 1089
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
728 ecb_function_ int 1091 ecb_function_ ecb_const int
729 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
730 { 1093 {
731 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101; 1097 x *= 0x01010101;
735 1098
736 return x >> 24; 1099 return x >> 24;
737 } 1100 }
738 1101
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
740 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
741 { 1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
742 int r = 0; 1110 int r = 0;
743 1111
744 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
749 1117
750 return r; 1118 return r;
1119#endif
751 } 1120 }
752 1121
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
754 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
755 { 1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
756 int r = 0; 1130 int r = 0;
757 1131
758 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
759 1133
760 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
761 } 1136 }
762#endif 1137#endif
1138
1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1143
1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1146{
1147 return ( (x * 0x0802U & 0x22110U)
1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1149}
1150
1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1153{
1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1157 x = ( x >> 8 ) | ( x << 8);
1158
1159 return x;
1160}
1161
1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1164{
1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1169 x = ( x >> 16 ) | ( x << 16);
1170
1171 return x;
1172}
763 1173
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 1175/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
767ecb_function_ int 1177ecb_function_ ecb_const int
768ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
769{ 1179{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771} 1181}
772 1182
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1183ecb_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; 1184ecb_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; 1185ecb_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; 1186ecb_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; 1187ecb_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; 1188ecb_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; 1189ecb_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; 1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
781 1191
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1192ecb_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); } 1193ecb_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); } 1194ecb_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); } 1195ecb_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); } 1196ecb_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); } 1197ecb_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); } 1198ecb_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); } 1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790 1200
791#if ECB_GCC_VERSION(4,3) 1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
793 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x) 1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
795#else 1214#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
797 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
798 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
799 { 1218 {
800 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
801 } 1220 }
802 1221
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
804 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
805 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
806 { 1225 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 } 1227 }
809 1228
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
811 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
812 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
813 { 1232 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 } 1234 }
816#endif 1235#endif
817 1236
818#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
819 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
820#else 1239#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
823 ecb_function_ void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
824#endif 1243#endif
825 1244
826/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1247
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
830ecb_function_ unsigned char 1249ecb_inline ecb_const uint32_t
831ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
832{ 1251{
833 const uint32_t u = 0x11223344; 1252 /* the union code still generates code under pressure in gcc, */
834 return *(unsigned char *)&u; 1253 /* but less than using pointers, and always seems to */
1254 /* successfully return a constant. */
1255 /* the reason why we have this horrible preprocessor mess */
1256 /* is to avoid it in all cases, at least on common architectures */
1257 /* or when using a recent enough gcc version (>= 4.6) */
1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1261 return 0x44332211;
1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1265 return 0x11223344;
1266#else
1267 union
1268 {
1269 uint8_t c[4];
1270 uint32_t u;
1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1272 return u.u;
1273#endif
835} 1274}
836 1275
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
841 1280
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else 1283#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
846#endif 1285#endif
847 1286
848#if __cplusplus 1287#if ECB_CPP
849 template<typename T> 1288 template<typename T>
850 static inline T ecb_div_rd (T val, T div) 1289 static inline T ecb_div_rd (T val, T div)
851 { 1290 {
852 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
853 } 1292 }
… …
870 } 1309 }
871#else 1310#else
872 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
873#endif 1312#endif
874 1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1410/*******************************************************************************/
1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1412
1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1415#if 0 \
1416 || __i386 || __i386__ \
1417 || ECB_GCC_AMD64 \
1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1419 || defined __s390__ || defined __s390x__ \
1420 || defined __mips__ \
1421 || defined __alpha__ \
1422 || defined __hppa__ \
1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1430 #define ECB_STDFP 1
1431 #include <string.h> /* for memcpy */
1432#else
1433 #define ECB_STDFP 0
1434#endif
1435
1436#ifndef ECB_NO_LIBM
1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1461 /* convert a float to ieee single/binary32 */
1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1463 ecb_function_ ecb_const uint32_t
1464 ecb_float_to_binary32 (float x)
1465 {
1466 uint32_t r;
1467
1468 #if ECB_STDFP
1469 memcpy (&r, &x, 4);
1470 #else
1471 /* slow emulation, works for anything but -0 */
1472 uint32_t m;
1473 int e;
1474
1475 if (x == 0e0f ) return 0x00000000U;
1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1478 if (x != x ) return 0x7fbfffffU;
1479
1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1481
1482 r = m & 0x80000000U;
1483
1484 if (r)
1485 m = -m;
1486
1487 if (e <= -126)
1488 {
1489 m &= 0xffffffU;
1490 m >>= (-125 - e);
1491 e = -126;
1492 }
1493
1494 r |= (e + 126) << 23;
1495 r |= m & 0x7fffffU;
1496 #endif
1497
1498 return r;
1499 }
1500
1501 /* converts an ieee single/binary32 to a float */
1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1503 ecb_function_ ecb_const float
1504 ecb_binary32_to_float (uint32_t x)
1505 {
1506 float r;
1507
1508 #if ECB_STDFP
1509 memcpy (&r, &x, 4);
1510 #else
1511 /* emulation, only works for normals and subnormals and +0 */
1512 int neg = x >> 31;
1513 int e = (x >> 23) & 0xffU;
1514
1515 x &= 0x7fffffU;
1516
1517 if (e)
1518 x |= 0x800000U;
1519 else
1520 e = 1;
1521
1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1524
1525 r = neg ? -r : r;
1526 #endif
1527
1528 return r;
1529 }
1530
1531 /* convert a double to ieee double/binary64 */
1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1533 ecb_function_ ecb_const uint64_t
1534 ecb_double_to_binary64 (double x)
1535 {
1536 uint64_t r;
1537
1538 #if ECB_STDFP
1539 memcpy (&r, &x, 8);
1540 #else
1541 /* slow emulation, works for anything but -0 */
1542 uint64_t m;
1543 int e;
1544
1545 if (x == 0e0 ) return 0x0000000000000000U;
1546 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1547 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1548 if (x != x ) return 0X7ff7ffffffffffffU;
1549
1550 m = frexp (x, &e) * 0x20000000000000U;
1551
1552 r = m & 0x8000000000000000;;
1553
1554 if (r)
1555 m = -m;
1556
1557 if (e <= -1022)
1558 {
1559 m &= 0x1fffffffffffffU;
1560 m >>= (-1021 - e);
1561 e = -1022;
1562 }
1563
1564 r |= ((uint64_t)(e + 1022)) << 52;
1565 r |= m & 0xfffffffffffffU;
1566 #endif
1567
1568 return r;
1569 }
1570
1571 /* converts an ieee double/binary64 to a double */
1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1573 ecb_function_ ecb_const double
1574 ecb_binary64_to_double (uint64_t x)
1575 {
1576 double r;
1577
1578 #if ECB_STDFP
1579 memcpy (&r, &x, 8);
1580 #else
1581 /* emulation, only works for normals and subnormals and +0 */
1582 int neg = x >> 63;
1583 int e = (x >> 52) & 0x7ffU;
1584
1585 x &= 0xfffffffffffffU;
1586
1587 if (e)
1588 x |= 0x10000000000000U;
1589 else
1590 e = 1;
1591
1592 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1593 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1594
1595 r = neg ? -r : r;
1596 #endif
1597
1598 return r;
1599 }
1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1617#endif
1618
875#endif 1619#endif
876 1620
877/* ECB.H END */ 1621/* ECB.H END */
878 1622
879#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
880/* if your architecture doesn't need memory fences, e.g. because it is 1624/* if your architecture doesn't need memory fences, e.g. because it is
881 * single-cpu/core, or if you use libev in a project that doesn't use libev 1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
882 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
883 * libev, in which casess the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
884 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
885 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
886 */ 1630 */
887# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
888#endif 1632#endif
… …
891# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
892# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
893# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
894#endif 1638#endif
895 1639
896#define expect_false(cond) ecb_expect_false (cond)
897#define expect_true(cond) ecb_expect_true (cond)
898#define noinline ecb_noinline
899
900#define inline_size ecb_inline 1640#define inline_size ecb_inline
901 1641
902#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
903# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
904#else 1644#else
905# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
906#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
907 1713
908#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
909 1715
910#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
911# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
912#else 1718#else
913# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
914#endif 1720#endif
915 1721
916#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
917#define EMPTY2(a,b) /* used to suppress some warnings */
918 1723
919typedef ev_watcher *W; 1724typedef ev_watcher *W;
920typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
921typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
922 1727
… …
947# include "ev_win32.c" 1752# include "ev_win32.c"
948#endif 1753#endif
949 1754
950/*****************************************************************************/ 1755/*****************************************************************************/
951 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
952/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
953 1762
954#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
955# include <math.h> 1764# include <math.h>
956# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
957#else 1766#else
958 1767
959#include <float.h> 1768#include <float.h>
960 1769
961/* a floor() replacement function, should be independent of ev_tstamp type */ 1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
962static ev_tstamp noinline 1772static ev_tstamp
963ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
964{ 1774{
965 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
966#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
968#else 1778#else
969 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
970#endif 1780#endif
971 1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
972 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
973 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
974 { 1792 {
975 ev_tstamp f; 1793 ev_tstamp f;
976 1794
977 if (v == v - 1.) 1795 if (v == v - 1.)
978 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
979 1797
980 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
981 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
982 } 1800 }
983 1801
984 /* special treatment for negative args? */
985 if (expect_false (v < 0.))
986 {
987 ev_tstamp f = -ev_floor (-v);
988
989 return f - (f == v ? 0 : 1);
990 }
991
992 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
993 return (unsigned long)v; 1803 return (unsigned long)v;
994} 1804}
995 1805
996#endif 1806#endif
… …
999 1809
1000#ifdef __linux 1810#ifdef __linux
1001# include <sys/utsname.h> 1811# include <sys/utsname.h>
1002#endif 1812#endif
1003 1813
1004static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1005ev_linux_version (void) 1816ev_linux_version (void)
1006{ 1817{
1007#ifdef __linux 1818#ifdef __linux
1008 unsigned int v = 0; 1819 unsigned int v = 0;
1009 struct utsname buf; 1820 struct utsname buf;
… …
1038} 1849}
1039 1850
1040/*****************************************************************************/ 1851/*****************************************************************************/
1041 1852
1042#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1043static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1044ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1045{ 1857{
1046 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1047} 1859}
1048#endif 1860#endif
1049 1861
1050static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1051 1863
1052void ecb_cold 1864ecb_cold
1865void
1053ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1054{ 1867{
1055 syserr_cb = cb; 1868 syserr_cb = cb;
1056} 1869}
1057 1870
1058static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1059ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1060{ 1874{
1061 if (!msg) 1875 if (!msg)
1062 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1063 1877
… …
1076 abort (); 1890 abort ();
1077 } 1891 }
1078} 1892}
1079 1893
1080static void * 1894static void *
1081ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1082{ 1896{
1083#if __GLIBC__
1084 return realloc (ptr, size);
1085#else
1086 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1087 * implement realloc (x, 0) (as required by both ansi c-89 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
1088 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1900 * recently, also (at least) fedora and debian started breaking it,
1901 * despite documenting it otherwise.
1089 */ 1902 */
1090 1903
1091 if (size) 1904 if (size)
1092 return realloc (ptr, size); 1905 return realloc (ptr, size);
1093 1906
1094 free (ptr); 1907 free (ptr);
1095 return 0; 1908 return 0;
1096#endif
1097} 1909}
1098 1910
1099static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1100 1912
1101void ecb_cold 1913ecb_cold
1914void
1102ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1103{ 1916{
1104 alloc = cb; 1917 alloc = cb;
1105} 1918}
1106 1919
1107inline_speed void * 1920inline_speed void *
… …
1134typedef struct 1947typedef struct
1135{ 1948{
1136 WL head; 1949 WL head;
1137 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1138 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1139 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
1140 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1141#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1142 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1143#endif 1956#endif
1144#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1145 SOCKET handle; 1958 SOCKET handle;
… …
1195 #undef VAR 2008 #undef VAR
1196 }; 2009 };
1197 #include "ev_wrap.h" 2010 #include "ev_wrap.h"
1198 2011
1199 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1200 struct ev_loop *ev_default_loop_ptr; 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1201 2014
1202#else 2015#else
1203 2016
1204 ev_tstamp ev_rt_now; 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1205 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1206 #include "ev_vars.h" 2019 #include "ev_vars.h"
1207 #undef VAR 2020 #undef VAR
1208 2021
1209 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1210 2023
1211#endif 2024#endif
1212 2025
1213#if EV_FEATURE_API 2026#if EV_FEATURE_API
1214# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1215# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1216# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1217#else 2030#else
1218# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1219# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1220# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1224 2037
1225/*****************************************************************************/ 2038/*****************************************************************************/
1226 2039
1227#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1228ev_tstamp 2041ev_tstamp
1229ev_time (void) 2042ev_time (void) EV_NOEXCEPT
1230{ 2043{
1231#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1232 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1233 { 2046 {
1234 struct timespec ts; 2047 struct timespec ts;
1235 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1236 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1237 } 2050 }
1238#endif 2051#endif
1239 2052
2053 {
1240 struct timeval tv; 2054 struct timeval tv;
1241 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1242 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1243} 2058}
1244#endif 2059#endif
1245 2060
1246inline_size ev_tstamp 2061inline_size ev_tstamp
1247get_clock (void) 2062get_clock (void)
1248{ 2063{
1249#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1250 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1251 { 2066 {
1252 struct timespec ts; 2067 struct timespec ts;
1253 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1254 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1255 } 2070 }
1256#endif 2071#endif
1257 2072
1258 return ev_time (); 2073 return ev_time ();
1259} 2074}
1260 2075
1261#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1262ev_tstamp 2077ev_tstamp
1263ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
1264{ 2079{
1265 return ev_rt_now; 2080 return ev_rt_now;
1266} 2081}
1267#endif 2082#endif
1268 2083
1269void 2084void
1270ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1271{ 2086{
1272 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1273 { 2088 {
1274#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1275 struct timespec ts; 2090 struct timespec ts;
1276 2091
1277 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1278 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1279#elif defined(_WIN32) 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
1280 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1281#else 2098#else
1282 struct timeval tv; 2099 struct timeval tv;
1283 2100
1284 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1285 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1303 2120
1304 do 2121 do
1305 ncur <<= 1; 2122 ncur <<= 1;
1306 while (cnt > ncur); 2123 while (cnt > ncur);
1307 2124
1308 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2125 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1309 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2126 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1310 { 2127 {
1311 ncur *= elem; 2128 ncur *= elem;
1312 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2129 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1313 ncur = ncur - sizeof (void *) * 4; 2130 ncur = ncur - sizeof (void *) * 4;
… …
1315 } 2132 }
1316 2133
1317 return ncur; 2134 return ncur;
1318} 2135}
1319 2136
1320static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1321array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1322{ 2140{
1323 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1324 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1325} 2143}
1326 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1327#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1328 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1329 2149
1330#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1331 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1332 { \ 2152 { \
1333 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1334 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1335 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1336 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1337 } 2157 }
1338 2158
1339#if 0 2159#if 0
1340#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1341 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1350 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1351 2171
1352/*****************************************************************************/ 2172/*****************************************************************************/
1353 2173
1354/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1355static void noinline 2175ecb_noinline
2176static void
1356pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1357{ 2178{
1358} 2179}
1359 2180
1360void noinline 2181ecb_noinline
2182void
1361ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1362{ 2184{
1363 W w_ = (W)w; 2185 W w_ = (W)w;
1364 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1365 2187
1366 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1367 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1368 else 2190 else
1369 { 2191 {
1370 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1371 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1372 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1373 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1374 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
1375} 2199}
1376 2200
1377inline_speed void 2201inline_speed void
1378feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1379{ 2203{
1380 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1381 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1382} 2206}
1383 2207
1384inline_size void 2208inline_size void
1385feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1420inline_speed void 2244inline_speed void
1421fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1422{ 2246{
1423 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1424 2248
1425 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1426 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1427} 2251}
1428 2252
1429void 2253void
1430ev_feed_fd_event (EV_P_ int fd, int revents) 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1431{ 2255{
1432 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1433 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1434} 2258}
1435 2259
… …
1438inline_size void 2262inline_size void
1439fd_reify (EV_P) 2263fd_reify (EV_P)
1440{ 2264{
1441 int i; 2265 int i;
1442 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
1443#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1444 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
1445 { 2281 {
1446 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
1447 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
1448 2284
1449 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1463 } 2299 }
1464 } 2300 }
1465 } 2301 }
1466#endif 2302#endif
1467 2303
1468 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
1469 { 2305 {
1470 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
1471 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
1472 ev_io *w; 2308 ev_io *w;
1473 2309
1474 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
1475 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
1476 2312
1477 anfd->reify = 0; 2313 anfd->reify = 0;
1478 2314
1479 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1480 { 2316 {
1481 anfd->events = 0; 2317 anfd->events = 0;
1482 2318
1483 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1484 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
1489 2325
1490 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
1491 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
1492 } 2328 }
1493 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
1494 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
1495} 2338}
1496 2339
1497/* something about the given fd changed */ 2340/* something about the given fd changed */
1498inline_size void 2341inline_size
2342void
1499fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
1500{ 2344{
1501 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
1502 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
1503 2347
1504 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
1505 { 2349 {
1506 ++fdchangecnt; 2350 ++fdchangecnt;
1507 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1508 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
1509 } 2353 }
1510} 2354}
1511 2355
1512/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1513inline_speed void ecb_cold 2357inline_speed ecb_cold void
1514fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
1515{ 2359{
1516 ev_io *w; 2360 ev_io *w;
1517 2361
1518 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
1521 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1522 } 2366 }
1523} 2367}
1524 2368
1525/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
1526inline_size int ecb_cold 2370inline_size ecb_cold int
1527fd_valid (int fd) 2371fd_valid (int fd)
1528{ 2372{
1529#ifdef _WIN32 2373#ifdef _WIN32
1530 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1531#else 2375#else
1532 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
1533#endif 2377#endif
1534} 2378}
1535 2379
1536/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
1537static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
1538fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
1539{ 2384{
1540 int fd; 2385 int fd;
1541 2386
1542 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
1544 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
1545 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
1546} 2391}
1547 2392
1548/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
1549static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
1550fd_enomem (EV_P) 2396fd_enomem (EV_P)
1551{ 2397{
1552 int fd; 2398 int fd;
1553 2399
1554 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1558 break; 2404 break;
1559 } 2405 }
1560} 2406}
1561 2407
1562/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
1563static void noinline 2409ecb_noinline
2410static void
1564fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1565{ 2412{
1566 int fd; 2413 int fd;
1567 2414
1568 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
1621 ev_tstamp minat; 2468 ev_tstamp minat;
1622 ANHE *minpos; 2469 ANHE *minpos;
1623 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1624 2471
1625 /* find minimum child */ 2472 /* find minimum child */
1626 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
1627 { 2474 {
1628 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1629 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1630 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2477 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1631 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1632 } 2479 }
1633 else if (pos < E) 2480 else if (pos < E)
1634 { 2481 {
1635 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1636 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1637 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1638 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1639 } 2486 }
1640 else 2487 else
1641 break; 2488 break;
1642 2489
1643 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
1651 2498
1652 heap [k] = he; 2499 heap [k] = he;
1653 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
1654} 2501}
1655 2502
1656#else /* 4HEAP */ 2503#else /* not 4HEAP */
1657 2504
1658#define HEAP0 1 2505#define HEAP0 1
1659#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
1660#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
1661 2508
… …
1749 2596
1750/*****************************************************************************/ 2597/*****************************************************************************/
1751 2598
1752#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1753 2600
1754static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
1755evpipe_init (EV_P) 2603evpipe_init (EV_P)
1756{ 2604{
1757 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
1758 { 2606 {
2607 int fds [2];
2608
1759# if EV_USE_EVENTFD 2609# if EV_USE_EVENTFD
2610 fds [0] = -1;
1760 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2611 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1761 if (evfd < 0 && errno == EINVAL) 2612 if (fds [1] < 0 && errno == EINVAL)
1762 evfd = eventfd (0, 0); 2613 fds [1] = eventfd (0, 0);
1763 2614
1764 if (evfd >= 0) 2615 if (fds [1] < 0)
2616# endif
1765 { 2617 {
2618 while (pipe (fds))
2619 ev_syserr ("(libev) error creating signal/async pipe");
2620
2621 fd_intern (fds [0]);
2622 }
2623
1766 evpipe [0] = -1; 2624 evpipe [0] = fds [0];
1767 fd_intern (evfd); /* doing it twice doesn't hurt */ 2625
1768 ev_io_set (&pipe_w, evfd, EV_READ); 2626 if (evpipe [1] < 0)
2627 evpipe [1] = fds [1]; /* first call, set write fd */
2628 else
2629 {
2630 /* on subsequent calls, do not change evpipe [1] */
2631 /* so that evpipe_write can always rely on its value. */
2632 /* this branch does not do anything sensible on windows, */
2633 /* so must not be executed on windows */
2634
2635 dup2 (fds [1], evpipe [1]);
2636 close (fds [1]);
2637 }
2638
2639 fd_intern (evpipe [1]);
2640
2641 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2642 ev_io_start (EV_A_ &pipe_w);
2643 ev_unref (EV_A); /* watcher should not keep loop alive */
2644 }
2645}
2646
2647inline_speed void
2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2649{
2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2651
2652 if (ecb_expect_true (*flag))
2653 return;
2654
2655 *flag = 1;
2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2657
2658 pipe_write_skipped = 1;
2659
2660 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2661
2662 if (pipe_write_wanted)
2663 {
2664 int old_errno;
2665
2666 pipe_write_skipped = 0;
2667 ECB_MEMORY_FENCE_RELEASE;
2668
2669 old_errno = errno; /* save errno because write will clobber it */
2670
2671#if EV_USE_EVENTFD
2672 if (evpipe [0] < 0)
2673 {
2674 uint64_t counter = 1;
2675 write (evpipe [1], &counter, sizeof (uint64_t));
1769 } 2676 }
1770 else 2677 else
1771# endif 2678#endif
1772 { 2679 {
1773 while (pipe (evpipe)) 2680#ifdef _WIN32
1774 ev_syserr ("(libev) error creating signal/async pipe"); 2681 WSABUF buf;
1775 2682 DWORD sent;
1776 fd_intern (evpipe [0]); 2683 buf.buf = (char *)&buf;
1777 fd_intern (evpipe [1]); 2684 buf.len = 1;
1778 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1779 } 2686#else
1780
1781 ev_io_start (EV_A_ &pipe_w);
1782 ev_unref (EV_A); /* watcher should not keep loop alive */
1783 }
1784}
1785
1786inline_speed void
1787evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1788{
1789 if (expect_true (*flag))
1790 return;
1791
1792 *flag = 1;
1793
1794 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1795
1796 pipe_write_skipped = 1;
1797
1798 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1799
1800 if (pipe_write_wanted)
1801 {
1802 int old_errno;
1803
1804 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1805
1806 old_errno = errno; /* save errno because write will clobber it */
1807
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 {
1811 uint64_t counter = 1;
1812 write (evfd, &counter, sizeof (uint64_t));
1813 }
1814 else
1815#endif
1816 {
1817 /* win32 people keep sending patches that change this write() to send() */
1818 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1819 /* so when you think this write should be a send instead, please find out */
1820 /* where your send() is from - it's definitely not the microsoft send, and */
1821 /* tell me. thank you. */
1822 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2688#endif
1823 } 2689 }
1824 2690
1825 errno = old_errno; 2691 errno = old_errno;
1826 } 2692 }
1827} 2693}
… …
1834 int i; 2700 int i;
1835 2701
1836 if (revents & EV_READ) 2702 if (revents & EV_READ)
1837 { 2703 {
1838#if EV_USE_EVENTFD 2704#if EV_USE_EVENTFD
1839 if (evfd >= 0) 2705 if (evpipe [0] < 0)
1840 { 2706 {
1841 uint64_t counter; 2707 uint64_t counter;
1842 read (evfd, &counter, sizeof (uint64_t)); 2708 read (evpipe [1], &counter, sizeof (uint64_t));
1843 } 2709 }
1844 else 2710 else
1845#endif 2711#endif
1846 { 2712 {
1847 char dummy; 2713 char dummy[4];
1848 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2714#ifdef _WIN32
2715 WSABUF buf;
2716 DWORD recvd;
2717 DWORD flags = 0;
2718 buf.buf = dummy;
2719 buf.len = sizeof (dummy);
2720 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2721#else
1849 read (evpipe [0], &dummy, 1); 2722 read (evpipe [0], &dummy, sizeof (dummy));
2723#endif
1850 } 2724 }
1851 } 2725 }
1852 2726
1853 pipe_write_skipped = 0; 2727 pipe_write_skipped = 0;
2728
2729 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1854 2730
1855#if EV_SIGNAL_ENABLE 2731#if EV_SIGNAL_ENABLE
1856 if (sig_pending) 2732 if (sig_pending)
1857 { 2733 {
1858 sig_pending = 0; 2734 sig_pending = 0;
1859 2735
2736 ECB_MEMORY_FENCE;
2737
1860 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
1861 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
1862 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
1863 } 2741 }
1864#endif 2742#endif
1865 2743
1866#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1867 if (async_pending) 2745 if (async_pending)
1868 { 2746 {
1869 async_pending = 0; 2747 async_pending = 0;
2748
2749 ECB_MEMORY_FENCE;
1870 2750
1871 for (i = asynccnt; i--; ) 2751 for (i = asynccnt; i--; )
1872 if (asyncs [i]->sent) 2752 if (asyncs [i]->sent)
1873 { 2753 {
1874 asyncs [i]->sent = 0; 2754 asyncs [i]->sent = 0;
2755 ECB_MEMORY_FENCE_RELEASE;
1875 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2756 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1876 } 2757 }
1877 } 2758 }
1878#endif 2759#endif
1879} 2760}
1880 2761
1881/*****************************************************************************/ 2762/*****************************************************************************/
1882 2763
1883void 2764void
1884ev_feed_signal (int signum) 2765ev_feed_signal (int signum) EV_NOEXCEPT
1885{ 2766{
1886#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2768 EV_P;
2769 ECB_MEMORY_FENCE_ACQUIRE;
1887 EV_P = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
1888 2771
1889 if (!EV_A) 2772 if (!EV_A)
1890 return; 2773 return;
1891#endif 2774#endif
1892 2775
1893 if (!ev_active (&pipe_w))
1894 return;
1895
1896 signals [signum - 1].pending = 1; 2776 signals [signum - 1].pending = 1;
1897 evpipe_write (EV_A_ &sig_pending); 2777 evpipe_write (EV_A_ &sig_pending);
1898} 2778}
1899 2779
1900static void 2780static void
… …
1905#endif 2785#endif
1906 2786
1907 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
1908} 2788}
1909 2789
1910void noinline 2790ecb_noinline
2791void
1911ev_feed_signal_event (EV_P_ int signum) 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1912{ 2793{
1913 WL w; 2794 WL w;
1914 2795
1915 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1916 return; 2797 return;
1917 2798
1918 --signum; 2799 --signum;
1919 2800
1920#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
1921 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* it is permissible to try to feed a signal to the wrong loop */
1922 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
1923 2804
1924 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
1925 return; 2806 return;
1926#endif 2807#endif
1927 2808
1928 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2810 ECB_MEMORY_FENCE_RELEASE;
1929 2811
1930 for (w = signals [signum].head; w; w = w->next) 2812 for (w = signals [signum].head; w; w = w->next)
1931 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1932} 2814}
1933 2815
… …
2012 2894
2013#endif 2895#endif
2014 2896
2015/*****************************************************************************/ 2897/*****************************************************************************/
2016 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2017#if EV_USE_IOCP 2951#if EV_USE_IOCP
2018# include "ev_iocp.c" 2952# include "ev_iocp.c"
2019#endif 2953#endif
2020#if EV_USE_PORT 2954#if EV_USE_PORT
2021# include "ev_port.c" 2955# include "ev_port.c"
… …
2024# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2025#endif 2959#endif
2026#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2027# include "ev_epoll.c" 2961# include "ev_epoll.c"
2028#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
2029#if EV_USE_POLL 2969#if EV_USE_POLL
2030# include "ev_poll.c" 2970# include "ev_poll.c"
2031#endif 2971#endif
2032#if EV_USE_SELECT 2972#if EV_USE_SELECT
2033# include "ev_select.c" 2973# include "ev_select.c"
2034#endif 2974#endif
2035 2975
2036int ecb_cold 2976ecb_cold int
2037ev_version_major (void) 2977ev_version_major (void) EV_NOEXCEPT
2038{ 2978{
2039 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
2040} 2980}
2041 2981
2042int ecb_cold 2982ecb_cold int
2043ev_version_minor (void) 2983ev_version_minor (void) EV_NOEXCEPT
2044{ 2984{
2045 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2046} 2986}
2047 2987
2048/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
2049int inline_size ecb_cold 2989inline_size ecb_cold int
2050enable_secure (void) 2990enable_secure (void)
2051{ 2991{
2052#ifdef _WIN32 2992#ifdef _WIN32
2053 return 0; 2993 return 0;
2054#else 2994#else
2055 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2056 || getgid () != getegid (); 2996 || getgid () != getegid ();
2057#endif 2997#endif
2058} 2998}
2059 2999
2060unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2061ev_supported_backends (void) 3002ev_supported_backends (void) EV_NOEXCEPT
2062{ 3003{
2063 unsigned int flags = 0; 3004 unsigned int flags = 0;
2064 3005
2065 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2066 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2067 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2068 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2069 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2070 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2071 return flags; 3014 return flags;
2072} 3015}
2073 3016
2074unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2075ev_recommended_backends (void) 3019ev_recommended_backends (void) EV_NOEXCEPT
2076{ 3020{
2077 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2078 3022
2079#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2080 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2088#endif 3032#endif
2089#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2090 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2091#endif 3035#endif
2092 3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
3045
2093 return flags; 3046 return flags;
2094} 3047}
2095 3048
2096unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2097ev_embeddable_backends (void) 3051ev_embeddable_backends (void) EV_NOEXCEPT
2098{ 3052{
2099 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2100 3054
2101 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2102 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2103 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2104 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
2105 return flags; 3061 return flags;
2106} 3062}
2107 3063
2108unsigned int 3064unsigned int
2109ev_backend (EV_P) 3065ev_backend (EV_P) EV_NOEXCEPT
2110{ 3066{
2111 return backend; 3067 return backend;
2112} 3068}
2113 3069
2114#if EV_FEATURE_API 3070#if EV_FEATURE_API
2115unsigned int 3071unsigned int
2116ev_iteration (EV_P) 3072ev_iteration (EV_P) EV_NOEXCEPT
2117{ 3073{
2118 return loop_count; 3074 return loop_count;
2119} 3075}
2120 3076
2121unsigned int 3077unsigned int
2122ev_depth (EV_P) 3078ev_depth (EV_P) EV_NOEXCEPT
2123{ 3079{
2124 return loop_depth; 3080 return loop_depth;
2125} 3081}
2126 3082
2127void 3083void
2128ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3084ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2129{ 3085{
2130 io_blocktime = interval; 3086 io_blocktime = interval;
2131} 3087}
2132 3088
2133void 3089void
2134ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3090ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2135{ 3091{
2136 timeout_blocktime = interval; 3092 timeout_blocktime = interval;
2137} 3093}
2138 3094
2139void 3095void
2140ev_set_userdata (EV_P_ void *data) 3096ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2141{ 3097{
2142 userdata = data; 3098 userdata = data;
2143} 3099}
2144 3100
2145void * 3101void *
2146ev_userdata (EV_P) 3102ev_userdata (EV_P) EV_NOEXCEPT
2147{ 3103{
2148 return userdata; 3104 return userdata;
2149} 3105}
2150 3106
2151void 3107void
2152ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3108ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2153{ 3109{
2154 invoke_cb = invoke_pending_cb; 3110 invoke_cb = invoke_pending_cb;
2155} 3111}
2156 3112
2157void 3113void
2158ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3114ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2159{ 3115{
2160 release_cb = release; 3116 release_cb = release;
2161 acquire_cb = acquire; 3117 acquire_cb = acquire;
2162} 3118}
2163#endif 3119#endif
2164 3120
2165/* initialise a loop structure, must be zero-initialised */ 3121/* initialise a loop structure, must be zero-initialised */
2166static void noinline ecb_cold 3122ecb_noinline ecb_cold
3123static void
2167loop_init (EV_P_ unsigned int flags) 3124loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2168{ 3125{
2169 if (!backend) 3126 if (!backend)
2170 { 3127 {
2171 origflags = flags; 3128 origflags = flags;
2172 3129
… …
2217#if EV_ASYNC_ENABLE 3174#if EV_ASYNC_ENABLE
2218 async_pending = 0; 3175 async_pending = 0;
2219#endif 3176#endif
2220 pipe_write_skipped = 0; 3177 pipe_write_skipped = 0;
2221 pipe_write_wanted = 0; 3178 pipe_write_wanted = 0;
3179 evpipe [0] = -1;
3180 evpipe [1] = -1;
2222#if EV_USE_INOTIFY 3181#if EV_USE_INOTIFY
2223 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3182 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2224#endif 3183#endif
2225#if EV_USE_SIGNALFD 3184#if EV_USE_SIGNALFD
2226 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3185 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2227#endif 3186#endif
3187#if EV_USE_TIMERFD
3188 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3189#endif
2228 3190
2229 if (!(flags & EVBACKEND_MASK)) 3191 if (!(flags & EVBACKEND_MASK))
2230 flags |= ev_recommended_backends (); 3192 flags |= ev_recommended_backends ();
2231 3193
2232#if EV_USE_IOCP 3194#if EV_USE_IOCP
2233 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3195 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2234#endif 3196#endif
2235#if EV_USE_PORT 3197#if EV_USE_PORT
2236 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3198 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2237#endif 3199#endif
2238#if EV_USE_KQUEUE 3200#if EV_USE_KQUEUE
2239 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3201 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3202#endif
3203#if EV_USE_IOURING
3204 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3205#endif
3206#if EV_USE_LINUXAIO
3207 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2240#endif 3208#endif
2241#if EV_USE_EPOLL 3209#if EV_USE_EPOLL
2242 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3210 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2243#endif 3211#endif
2244#if EV_USE_POLL 3212#if EV_USE_POLL
2245 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3213 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2246#endif 3214#endif
2247#if EV_USE_SELECT 3215#if EV_USE_SELECT
2248 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3216 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2249#endif 3217#endif
2250 3218
2251 ev_prepare_init (&pending_w, pendingcb); 3219 ev_prepare_init (&pending_w, pendingcb);
2252 3220
2253#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2256#endif 3224#endif
2257 } 3225 }
2258} 3226}
2259 3227
2260/* free up a loop structure */ 3228/* free up a loop structure */
2261void ecb_cold 3229ecb_cold
3230void
2262ev_loop_destroy (EV_P) 3231ev_loop_destroy (EV_P)
2263{ 3232{
2264 int i; 3233 int i;
2265 3234
2266#if EV_MULTIPLICITY 3235#if EV_MULTIPLICITY
… …
2269 return; 3238 return;
2270#endif 3239#endif
2271 3240
2272#if EV_CLEANUP_ENABLE 3241#if EV_CLEANUP_ENABLE
2273 /* queue cleanup watchers (and execute them) */ 3242 /* queue cleanup watchers (and execute them) */
2274 if (expect_false (cleanupcnt)) 3243 if (ecb_expect_false (cleanupcnt))
2275 { 3244 {
2276 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3245 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2277 EV_INVOKE_PENDING; 3246 EV_INVOKE_PENDING;
2278 } 3247 }
2279#endif 3248#endif
2280 3249
2281#if EV_CHILD_ENABLE 3250#if EV_CHILD_ENABLE
2282 if (ev_is_active (&childev)) 3251 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2283 { 3252 {
2284 ev_ref (EV_A); /* child watcher */ 3253 ev_ref (EV_A); /* child watcher */
2285 ev_signal_stop (EV_A_ &childev); 3254 ev_signal_stop (EV_A_ &childev);
2286 } 3255 }
2287#endif 3256#endif
… …
2289 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w))
2290 { 3259 {
2291 /*ev_ref (EV_A);*/ 3260 /*ev_ref (EV_A);*/
2292 /*ev_io_stop (EV_A_ &pipe_w);*/ 3261 /*ev_io_stop (EV_A_ &pipe_w);*/
2293 3262
2294#if EV_USE_EVENTFD
2295 if (evfd >= 0)
2296 close (evfd);
2297#endif
2298
2299 if (evpipe [0] >= 0)
2300 {
2301 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2302 EV_WIN32_CLOSE_FD (evpipe [1]); 3264 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2303 }
2304 } 3265 }
2305 3266
2306#if EV_USE_SIGNALFD 3267#if EV_USE_SIGNALFD
2307 if (ev_is_active (&sigfd_w)) 3268 if (ev_is_active (&sigfd_w))
2308 close (sigfd); 3269 close (sigfd);
2309#endif 3270#endif
2310 3271
3272#if EV_USE_TIMERFD
3273 if (ev_is_active (&timerfd_w))
3274 close (timerfd);
3275#endif
3276
2311#if EV_USE_INOTIFY 3277#if EV_USE_INOTIFY
2312 if (fs_fd >= 0) 3278 if (fs_fd >= 0)
2313 close (fs_fd); 3279 close (fs_fd);
2314#endif 3280#endif
2315 3281
2316 if (backend_fd >= 0) 3282 if (backend_fd >= 0)
2317 close (backend_fd); 3283 close (backend_fd);
2318 3284
2319#if EV_USE_IOCP 3285#if EV_USE_IOCP
2320 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3286 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2321#endif 3287#endif
2322#if EV_USE_PORT 3288#if EV_USE_PORT
2323 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3289 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2324#endif 3290#endif
2325#if EV_USE_KQUEUE 3291#if EV_USE_KQUEUE
2326 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3292 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3293#endif
3294#if EV_USE_IOURING
3295 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3296#endif
3297#if EV_USE_LINUXAIO
3298 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2327#endif 3299#endif
2328#if EV_USE_EPOLL 3300#if EV_USE_EPOLL
2329 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3301 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2330#endif 3302#endif
2331#if EV_USE_POLL 3303#if EV_USE_POLL
2332 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3304 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2333#endif 3305#endif
2334#if EV_USE_SELECT 3306#if EV_USE_SELECT
2335 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3307 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2336#endif 3308#endif
2337 3309
2338 for (i = NUMPRI; i--; ) 3310 for (i = NUMPRI; i--; )
2339 { 3311 {
2340 array_free (pending, [i]); 3312 array_free (pending, [i]);
… …
2382 3354
2383inline_size void 3355inline_size void
2384loop_fork (EV_P) 3356loop_fork (EV_P)
2385{ 3357{
2386#if EV_USE_PORT 3358#if EV_USE_PORT
2387 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3359 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2388#endif 3360#endif
2389#if EV_USE_KQUEUE 3361#if EV_USE_KQUEUE
2390 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3362 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3363#endif
3364#if EV_USE_IOURING
3365 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3366#endif
3367#if EV_USE_LINUXAIO
3368 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2391#endif 3369#endif
2392#if EV_USE_EPOLL 3370#if EV_USE_EPOLL
2393 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3371 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2394#endif 3372#endif
2395#if EV_USE_INOTIFY 3373#if EV_USE_INOTIFY
2396 infy_fork (EV_A); 3374 infy_fork (EV_A);
2397#endif 3375#endif
2398 3376
3377 if (postfork != 2)
3378 {
3379 #if EV_USE_SIGNALFD
3380 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3381 #endif
3382
3383 #if EV_USE_TIMERFD
3384 if (ev_is_active (&timerfd_w))
3385 {
3386 ev_ref (EV_A);
3387 ev_io_stop (EV_A_ &timerfd_w);
3388
3389 close (timerfd);
3390 timerfd = -2;
3391
3392 evtimerfd_init (EV_A);
3393 /* reschedule periodics, in case we missed something */
3394 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3395 }
3396 #endif
3397
3398 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2399 if (ev_is_active (&pipe_w)) 3399 if (ev_is_active (&pipe_w))
2400 { 3400 {
2401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2402 3402
2403 ev_ref (EV_A); 3403 ev_ref (EV_A);
2404 ev_io_stop (EV_A_ &pipe_w); 3404 ev_io_stop (EV_A_ &pipe_w);
2405 3405
2406#if EV_USE_EVENTFD
2407 if (evfd >= 0)
2408 close (evfd);
2409#endif
2410
2411 if (evpipe [0] >= 0) 3406 if (evpipe [0] >= 0)
2412 {
2413 EV_WIN32_CLOSE_FD (evpipe [0]); 3407 EV_WIN32_CLOSE_FD (evpipe [0]);
2414 EV_WIN32_CLOSE_FD (evpipe [1]); 3408
3409 evpipe_init (EV_A);
3410 /* iterate over everything, in case we missed something before */
3411 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2415 } 3412 }
2416 3413 #endif
2417#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2418 evpipe_init (EV_A);
2419 /* now iterate over everything, in case we missed something */
2420 pipecb (EV_A_ &pipe_w, EV_READ);
2421#endif
2422 } 3414 }
2423 3415
2424 postfork = 0; 3416 postfork = 0;
2425} 3417}
2426 3418
2427#if EV_MULTIPLICITY 3419#if EV_MULTIPLICITY
2428 3420
3421ecb_cold
2429struct ev_loop * ecb_cold 3422struct ev_loop *
2430ev_loop_new (unsigned int flags) 3423ev_loop_new (unsigned int flags) EV_NOEXCEPT
2431{ 3424{
2432 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3425 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2433 3426
2434 memset (EV_A, 0, sizeof (struct ev_loop)); 3427 memset (EV_A, 0, sizeof (struct ev_loop));
2435 loop_init (EV_A_ flags); 3428 loop_init (EV_A_ flags);
… …
2442} 3435}
2443 3436
2444#endif /* multiplicity */ 3437#endif /* multiplicity */
2445 3438
2446#if EV_VERIFY 3439#if EV_VERIFY
2447static void noinline ecb_cold 3440ecb_noinline ecb_cold
3441static void
2448verify_watcher (EV_P_ W w) 3442verify_watcher (EV_P_ W w)
2449{ 3443{
2450 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3444 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2451 3445
2452 if (w->pending) 3446 if (w->pending)
2453 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3447 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2454} 3448}
2455 3449
2456static void noinline ecb_cold 3450ecb_noinline ecb_cold
3451static void
2457verify_heap (EV_P_ ANHE *heap, int N) 3452verify_heap (EV_P_ ANHE *heap, int N)
2458{ 3453{
2459 int i; 3454 int i;
2460 3455
2461 for (i = HEAP0; i < N + HEAP0; ++i) 3456 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2466 3461
2467 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3462 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2468 } 3463 }
2469} 3464}
2470 3465
2471static void noinline ecb_cold 3466ecb_noinline ecb_cold
3467static void
2472array_verify (EV_P_ W *ws, int cnt) 3468array_verify (EV_P_ W *ws, int cnt)
2473{ 3469{
2474 while (cnt--) 3470 while (cnt--)
2475 { 3471 {
2476 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3472 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2479} 3475}
2480#endif 3476#endif
2481 3477
2482#if EV_FEATURE_API 3478#if EV_FEATURE_API
2483void ecb_cold 3479void ecb_cold
2484ev_verify (EV_P) 3480ev_verify (EV_P) EV_NOEXCEPT
2485{ 3481{
2486#if EV_VERIFY 3482#if EV_VERIFY
2487 int i; 3483 int i;
2488 WL w; 3484 WL w, w2;
2489 3485
2490 assert (activecnt >= -1); 3486 assert (activecnt >= -1);
2491 3487
2492 assert (fdchangemax >= fdchangecnt); 3488 assert (fdchangemax >= fdchangecnt);
2493 for (i = 0; i < fdchangecnt; ++i) 3489 for (i = 0; i < fdchangecnt; ++i)
2494 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3490 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2495 3491
2496 assert (anfdmax >= 0); 3492 assert (anfdmax >= 0);
2497 for (i = 0; i < anfdmax; ++i) 3493 for (i = 0; i < anfdmax; ++i)
3494 {
3495 int j = 0;
3496
2498 for (w = anfds [i].head; w; w = w->next) 3497 for (w = w2 = anfds [i].head; w; w = w->next)
2499 { 3498 {
2500 verify_watcher (EV_A_ (W)w); 3499 verify_watcher (EV_A_ (W)w);
3500
3501 if (j++ & 1)
3502 {
3503 assert (("libev: io watcher list contains a loop", w != w2));
3504 w2 = w2->next;
3505 }
3506
2501 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3507 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2502 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3508 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2503 } 3509 }
3510 }
2504 3511
2505 assert (timermax >= timercnt); 3512 assert (timermax >= timercnt);
2506 verify_heap (EV_A_ timers, timercnt); 3513 verify_heap (EV_A_ timers, timercnt);
2507 3514
2508#if EV_PERIODIC_ENABLE 3515#if EV_PERIODIC_ENABLE
… …
2554#endif 3561#endif
2555} 3562}
2556#endif 3563#endif
2557 3564
2558#if EV_MULTIPLICITY 3565#if EV_MULTIPLICITY
3566ecb_cold
2559struct ev_loop * ecb_cold 3567struct ev_loop *
2560#else 3568#else
2561int 3569int
2562#endif 3570#endif
2563ev_default_loop (unsigned int flags) 3571ev_default_loop (unsigned int flags) EV_NOEXCEPT
2564{ 3572{
2565 if (!ev_default_loop_ptr) 3573 if (!ev_default_loop_ptr)
2566 { 3574 {
2567#if EV_MULTIPLICITY 3575#if EV_MULTIPLICITY
2568 EV_P = ev_default_loop_ptr = &default_loop_struct; 3576 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2587 3595
2588 return ev_default_loop_ptr; 3596 return ev_default_loop_ptr;
2589} 3597}
2590 3598
2591void 3599void
2592ev_loop_fork (EV_P) 3600ev_loop_fork (EV_P) EV_NOEXCEPT
2593{ 3601{
2594 postfork = 1; /* must be in line with ev_default_fork */ 3602 postfork = 1;
2595} 3603}
2596 3604
2597/*****************************************************************************/ 3605/*****************************************************************************/
2598 3606
2599void 3607void
… …
2601{ 3609{
2602 EV_CB_INVOKE ((W)w, revents); 3610 EV_CB_INVOKE ((W)w, revents);
2603} 3611}
2604 3612
2605unsigned int 3613unsigned int
2606ev_pending_count (EV_P) 3614ev_pending_count (EV_P) EV_NOEXCEPT
2607{ 3615{
2608 int pri; 3616 int pri;
2609 unsigned int count = 0; 3617 unsigned int count = 0;
2610 3618
2611 for (pri = NUMPRI; pri--; ) 3619 for (pri = NUMPRI; pri--; )
2612 count += pendingcnt [pri]; 3620 count += pendingcnt [pri];
2613 3621
2614 return count; 3622 return count;
2615} 3623}
2616 3624
2617void noinline 3625ecb_noinline
3626void
2618ev_invoke_pending (EV_P) 3627ev_invoke_pending (EV_P)
2619{ 3628{
2620 int pri; 3629 pendingpri = NUMPRI;
2621 3630
2622 for (pri = NUMPRI; pri--; ) 3631 do
3632 {
3633 --pendingpri;
3634
3635 /* pendingpri possibly gets modified in the inner loop */
2623 while (pendingcnt [pri]) 3636 while (pendingcnt [pendingpri])
2624 { 3637 {
2625 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3638 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2626 3639
2627 p->w->pending = 0; 3640 p->w->pending = 0;
2628 EV_CB_INVOKE (p->w, p->events); 3641 EV_CB_INVOKE (p->w, p->events);
2629 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2630 } 3643 }
3644 }
3645 while (pendingpri);
2631} 3646}
2632 3647
2633#if EV_IDLE_ENABLE 3648#if EV_IDLE_ENABLE
2634/* make idle watchers pending. this handles the "call-idle */ 3649/* make idle watchers pending. this handles the "call-idle */
2635/* only when higher priorities are idle" logic */ 3650/* only when higher priorities are idle" logic */
2636inline_size void 3651inline_size void
2637idle_reify (EV_P) 3652idle_reify (EV_P)
2638{ 3653{
2639 if (expect_false (idleall)) 3654 if (ecb_expect_false (idleall))
2640 { 3655 {
2641 int pri; 3656 int pri;
2642 3657
2643 for (pri = NUMPRI; pri--; ) 3658 for (pri = NUMPRI; pri--; )
2644 { 3659 {
… …
2674 { 3689 {
2675 ev_at (w) += w->repeat; 3690 ev_at (w) += w->repeat;
2676 if (ev_at (w) < mn_now) 3691 if (ev_at (w) < mn_now)
2677 ev_at (w) = mn_now; 3692 ev_at (w) = mn_now;
2678 3693
2679 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3694 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2680 3695
2681 ANHE_at_cache (timers [HEAP0]); 3696 ANHE_at_cache (timers [HEAP0]);
2682 downheap (timers, timercnt, HEAP0); 3697 downheap (timers, timercnt, HEAP0);
2683 } 3698 }
2684 else 3699 else
… …
2693 } 3708 }
2694} 3709}
2695 3710
2696#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
2697 3712
2698static void noinline 3713ecb_noinline
3714static void
2699periodic_recalc (EV_P_ ev_periodic *w) 3715periodic_recalc (EV_P_ ev_periodic *w)
2700{ 3716{
2701 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3717 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2702 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3718 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2703 3719
… …
2705 while (at <= ev_rt_now) 3721 while (at <= ev_rt_now)
2706 { 3722 {
2707 ev_tstamp nat = at + w->interval; 3723 ev_tstamp nat = at + w->interval;
2708 3724
2709 /* when resolution fails us, we use ev_rt_now */ 3725 /* when resolution fails us, we use ev_rt_now */
2710 if (expect_false (nat == at)) 3726 if (ecb_expect_false (nat == at))
2711 { 3727 {
2712 at = ev_rt_now; 3728 at = ev_rt_now;
2713 break; 3729 break;
2714 } 3730 }
2715 3731
… …
2725{ 3741{
2726 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2727 3743
2728 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3744 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2729 { 3745 {
2730 int feed_count = 0;
2731
2732 do 3746 do
2733 { 3747 {
2734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3748 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2735 3749
2736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3750 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2763 } 3777 }
2764} 3778}
2765 3779
2766/* simply recalculate all periodics */ 3780/* simply recalculate all periodics */
2767/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3781/* TODO: maybe ensure that at least one event happens when jumping forward? */
2768static void noinline ecb_cold 3782ecb_noinline ecb_cold
3783static void
2769periodics_reschedule (EV_P) 3784periodics_reschedule (EV_P)
2770{ 3785{
2771 int i; 3786 int i;
2772 3787
2773 /* adjust periodics after time jump */ 3788 /* adjust periodics after time jump */
… …
2786 reheap (periodics, periodiccnt); 3801 reheap (periodics, periodiccnt);
2787} 3802}
2788#endif 3803#endif
2789 3804
2790/* adjust all timers by a given offset */ 3805/* adjust all timers by a given offset */
2791static void noinline ecb_cold 3806ecb_noinline ecb_cold
3807static void
2792timers_reschedule (EV_P_ ev_tstamp adjust) 3808timers_reschedule (EV_P_ ev_tstamp adjust)
2793{ 3809{
2794 int i; 3810 int i;
2795 3811
2796 for (i = 0; i < timercnt; ++i) 3812 for (i = 0; i < timercnt; ++i)
… …
2805/* also detect if there was a timejump, and act accordingly */ 3821/* also detect if there was a timejump, and act accordingly */
2806inline_speed void 3822inline_speed void
2807time_update (EV_P_ ev_tstamp max_block) 3823time_update (EV_P_ ev_tstamp max_block)
2808{ 3824{
2809#if EV_USE_MONOTONIC 3825#if EV_USE_MONOTONIC
2810 if (expect_true (have_monotonic)) 3826 if (ecb_expect_true (have_monotonic))
2811 { 3827 {
2812 int i; 3828 int i;
2813 ev_tstamp odiff = rtmn_diff; 3829 ev_tstamp odiff = rtmn_diff;
2814 3830
2815 mn_now = get_clock (); 3831 mn_now = get_clock ();
2816 3832
2817 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2818 /* interpolate in the meantime */ 3834 /* interpolate in the meantime */
2819 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3835 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2820 { 3836 {
2821 ev_rt_now = rtmn_diff + mn_now; 3837 ev_rt_now = rtmn_diff + mn_now;
2822 return; 3838 return;
2823 } 3839 }
2824 3840
… …
2838 ev_tstamp diff; 3854 ev_tstamp diff;
2839 rtmn_diff = ev_rt_now - mn_now; 3855 rtmn_diff = ev_rt_now - mn_now;
2840 3856
2841 diff = odiff - rtmn_diff; 3857 diff = odiff - rtmn_diff;
2842 3858
2843 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3859 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2844 return; /* all is well */ 3860 return; /* all is well */
2845 3861
2846 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
2847 mn_now = get_clock (); 3863 mn_now = get_clock ();
2848 now_floor = mn_now; 3864 now_floor = mn_now;
… …
2857 else 3873 else
2858#endif 3874#endif
2859 { 3875 {
2860 ev_rt_now = ev_time (); 3876 ev_rt_now = ev_time ();
2861 3877
2862 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3878 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2863 { 3879 {
2864 /* adjust timers. this is easy, as the offset is the same for all of them */ 3880 /* adjust timers. this is easy, as the offset is the same for all of them */
2865 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3881 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2866#if EV_PERIODIC_ENABLE 3882#if EV_PERIODIC_ENABLE
2867 periodics_reschedule (EV_A); 3883 periodics_reschedule (EV_A);
… …
2870 3886
2871 mn_now = ev_rt_now; 3887 mn_now = ev_rt_now;
2872 } 3888 }
2873} 3889}
2874 3890
2875void 3891int
2876ev_run (EV_P_ int flags) 3892ev_run (EV_P_ int flags)
2877{ 3893{
2878#if EV_FEATURE_API 3894#if EV_FEATURE_API
2879 ++loop_depth; 3895 ++loop_depth;
2880#endif 3896#endif
… …
2890#if EV_VERIFY >= 2 3906#if EV_VERIFY >= 2
2891 ev_verify (EV_A); 3907 ev_verify (EV_A);
2892#endif 3908#endif
2893 3909
2894#ifndef _WIN32 3910#ifndef _WIN32
2895 if (expect_false (curpid)) /* penalise the forking check even more */ 3911 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2896 if (expect_false (getpid () != curpid)) 3912 if (ecb_expect_false (getpid () != curpid))
2897 { 3913 {
2898 curpid = getpid (); 3914 curpid = getpid ();
2899 postfork = 1; 3915 postfork = 1;
2900 } 3916 }
2901#endif 3917#endif
2902 3918
2903#if EV_FORK_ENABLE 3919#if EV_FORK_ENABLE
2904 /* we might have forked, so queue fork handlers */ 3920 /* we might have forked, so queue fork handlers */
2905 if (expect_false (postfork)) 3921 if (ecb_expect_false (postfork))
2906 if (forkcnt) 3922 if (forkcnt)
2907 { 3923 {
2908 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3924 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2909 EV_INVOKE_PENDING; 3925 EV_INVOKE_PENDING;
2910 } 3926 }
2911#endif 3927#endif
2912 3928
2913#if EV_PREPARE_ENABLE 3929#if EV_PREPARE_ENABLE
2914 /* queue prepare watchers (and execute them) */ 3930 /* queue prepare watchers (and execute them) */
2915 if (expect_false (preparecnt)) 3931 if (ecb_expect_false (preparecnt))
2916 { 3932 {
2917 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3933 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2918 EV_INVOKE_PENDING; 3934 EV_INVOKE_PENDING;
2919 } 3935 }
2920#endif 3936#endif
2921 3937
2922 if (expect_false (loop_done)) 3938 if (ecb_expect_false (loop_done))
2923 break; 3939 break;
2924 3940
2925 /* we might have forked, so reify kernel state if necessary */ 3941 /* we might have forked, so reify kernel state if necessary */
2926 if (expect_false (postfork)) 3942 if (ecb_expect_false (postfork))
2927 loop_fork (EV_A); 3943 loop_fork (EV_A);
2928 3944
2929 /* update fd-related kernel structures */ 3945 /* update fd-related kernel structures */
2930 fd_reify (EV_A); 3946 fd_reify (EV_A);
2931 3947
… …
2936 3952
2937 /* remember old timestamp for io_blocktime calculation */ 3953 /* remember old timestamp for io_blocktime calculation */
2938 ev_tstamp prev_mn_now = mn_now; 3954 ev_tstamp prev_mn_now = mn_now;
2939 3955
2940 /* update time to cancel out callback processing overhead */ 3956 /* update time to cancel out callback processing overhead */
2941 time_update (EV_A_ 1e100); 3957 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2942 3958
2943 /* from now on, we want a pipe-wake-up */ 3959 /* from now on, we want a pipe-wake-up */
2944 pipe_write_wanted = 1; 3960 pipe_write_wanted = 1;
2945 3961
2946 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3962 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2947 3963
2948 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3964 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2949 { 3965 {
2950 waittime = MAX_BLOCKTIME; 3966 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2951 3967
2952 if (timercnt) 3968 if (timercnt)
2953 { 3969 {
2954 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3970 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2955 if (waittime > to) waittime = to; 3971 if (waittime > to) waittime = to;
… …
2962 if (waittime > to) waittime = to; 3978 if (waittime > to) waittime = to;
2963 } 3979 }
2964#endif 3980#endif
2965 3981
2966 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3982 /* don't let timeouts decrease the waittime below timeout_blocktime */
2967 if (expect_false (waittime < timeout_blocktime)) 3983 if (ecb_expect_false (waittime < timeout_blocktime))
2968 waittime = timeout_blocktime; 3984 waittime = timeout_blocktime;
2969 3985
2970 /* at this point, we NEED to wait, so we have to ensure */ 3986 /* now there are two more special cases left, either we have
2971 /* to pass a minimum nonzero value to the backend */ 3987 * already-expired timers, so we should not sleep, or we have timers
3988 * that expire very soon, in which case we need to wait for a minimum
3989 * amount of time for some event loop backends.
3990 */
2972 if (expect_false (waittime < backend_mintime)) 3991 if (ecb_expect_false (waittime < backend_mintime))
3992 waittime = waittime <= EV_TS_CONST (0.)
3993 ? EV_TS_CONST (0.)
2973 waittime = backend_mintime; 3994 : backend_mintime;
2974 3995
2975 /* extra check because io_blocktime is commonly 0 */ 3996 /* extra check because io_blocktime is commonly 0 */
2976 if (expect_false (io_blocktime)) 3997 if (ecb_expect_false (io_blocktime))
2977 { 3998 {
2978 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3999 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2979 4000
2980 if (sleeptime > waittime - backend_mintime) 4001 if (sleeptime > waittime - backend_mintime)
2981 sleeptime = waittime - backend_mintime; 4002 sleeptime = waittime - backend_mintime;
2982 4003
2983 if (expect_true (sleeptime > 0.)) 4004 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2984 { 4005 {
2985 ev_sleep (sleeptime); 4006 ev_sleep (sleeptime);
2986 waittime -= sleeptime; 4007 waittime -= sleeptime;
2987 } 4008 }
2988 } 4009 }
… …
2993#endif 4014#endif
2994 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 4015 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2995 backend_poll (EV_A_ waittime); 4016 backend_poll (EV_A_ waittime);
2996 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4017 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2997 4018
2998 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 4019 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2999 4020
4021 ECB_MEMORY_FENCE_ACQUIRE;
3000 if (pipe_write_skipped) 4022 if (pipe_write_skipped)
3001 { 4023 {
3002 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4024 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3003 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4025 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3004 } 4026 }
3005 4027
3006
3007 /* update ev_rt_now, do magic */ 4028 /* update ev_rt_now, do magic */
3008 time_update (EV_A_ waittime + sleeptime); 4029 time_update (EV_A_ waittime + sleeptime);
3009 } 4030 }
3010 4031
3011 /* queue pending timers and reschedule them */ 4032 /* queue pending timers and reschedule them */
… …
3019 idle_reify (EV_A); 4040 idle_reify (EV_A);
3020#endif 4041#endif
3021 4042
3022#if EV_CHECK_ENABLE 4043#if EV_CHECK_ENABLE
3023 /* queue check watchers, to be executed first */ 4044 /* queue check watchers, to be executed first */
3024 if (expect_false (checkcnt)) 4045 if (ecb_expect_false (checkcnt))
3025 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4046 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3026#endif 4047#endif
3027 4048
3028 EV_INVOKE_PENDING; 4049 EV_INVOKE_PENDING;
3029 } 4050 }
3030 while (expect_true ( 4051 while (ecb_expect_true (
3031 activecnt 4052 activecnt
3032 && !loop_done 4053 && !loop_done
3033 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4054 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3034 )); 4055 ));
3035 4056
… …
3037 loop_done = EVBREAK_CANCEL; 4058 loop_done = EVBREAK_CANCEL;
3038 4059
3039#if EV_FEATURE_API 4060#if EV_FEATURE_API
3040 --loop_depth; 4061 --loop_depth;
3041#endif 4062#endif
3042}
3043 4063
4064 return activecnt;
4065}
4066
3044void 4067void
3045ev_break (EV_P_ int how) 4068ev_break (EV_P_ int how) EV_NOEXCEPT
3046{ 4069{
3047 loop_done = how; 4070 loop_done = how;
3048} 4071}
3049 4072
3050void 4073void
3051ev_ref (EV_P) 4074ev_ref (EV_P) EV_NOEXCEPT
3052{ 4075{
3053 ++activecnt; 4076 ++activecnt;
3054} 4077}
3055 4078
3056void 4079void
3057ev_unref (EV_P) 4080ev_unref (EV_P) EV_NOEXCEPT
3058{ 4081{
3059 --activecnt; 4082 --activecnt;
3060} 4083}
3061 4084
3062void 4085void
3063ev_now_update (EV_P) 4086ev_now_update (EV_P) EV_NOEXCEPT
3064{ 4087{
3065 time_update (EV_A_ 1e100); 4088 time_update (EV_A_ EV_TSTAMP_HUGE);
3066} 4089}
3067 4090
3068void 4091void
3069ev_suspend (EV_P) 4092ev_suspend (EV_P) EV_NOEXCEPT
3070{ 4093{
3071 ev_now_update (EV_A); 4094 ev_now_update (EV_A);
3072} 4095}
3073 4096
3074void 4097void
3075ev_resume (EV_P) 4098ev_resume (EV_P) EV_NOEXCEPT
3076{ 4099{
3077 ev_tstamp mn_prev = mn_now; 4100 ev_tstamp mn_prev = mn_now;
3078 4101
3079 ev_now_update (EV_A); 4102 ev_now_update (EV_A);
3080 timers_reschedule (EV_A_ mn_now - mn_prev); 4103 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3097inline_size void 4120inline_size void
3098wlist_del (WL *head, WL elem) 4121wlist_del (WL *head, WL elem)
3099{ 4122{
3100 while (*head) 4123 while (*head)
3101 { 4124 {
3102 if (expect_true (*head == elem)) 4125 if (ecb_expect_true (*head == elem))
3103 { 4126 {
3104 *head = elem->next; 4127 *head = elem->next;
3105 break; 4128 break;
3106 } 4129 }
3107 4130
… …
3119 w->pending = 0; 4142 w->pending = 0;
3120 } 4143 }
3121} 4144}
3122 4145
3123int 4146int
3124ev_clear_pending (EV_P_ void *w) 4147ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3125{ 4148{
3126 W w_ = (W)w; 4149 W w_ = (W)w;
3127 int pending = w_->pending; 4150 int pending = w_->pending;
3128 4151
3129 if (expect_true (pending)) 4152 if (ecb_expect_true (pending))
3130 { 4153 {
3131 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4154 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3132 p->w = (W)&pending_w; 4155 p->w = (W)&pending_w;
3133 w_->pending = 0; 4156 w_->pending = 0;
3134 return p->events; 4157 return p->events;
… …
3161 w->active = 0; 4184 w->active = 0;
3162} 4185}
3163 4186
3164/*****************************************************************************/ 4187/*****************************************************************************/
3165 4188
3166void noinline 4189ecb_noinline
4190void
3167ev_io_start (EV_P_ ev_io *w) 4191ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3168{ 4192{
3169 int fd = w->fd; 4193 int fd = w->fd;
3170 4194
3171 if (expect_false (ev_is_active (w))) 4195 if (ecb_expect_false (ev_is_active (w)))
3172 return; 4196 return;
3173 4197
3174 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4198 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3175 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4199 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3176 4200
4201#if EV_VERIFY >= 2
4202 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4203#endif
3177 EV_FREQUENT_CHECK; 4204 EV_FREQUENT_CHECK;
3178 4205
3179 ev_start (EV_A_ (W)w, 1); 4206 ev_start (EV_A_ (W)w, 1);
3180 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4207 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3181 wlist_add (&anfds[fd].head, (WL)w); 4208 wlist_add (&anfds[fd].head, (WL)w);
4209
4210 /* common bug, apparently */
4211 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3182 4212
3183 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4213 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3184 w->events &= ~EV__IOFDSET; 4214 w->events &= ~EV__IOFDSET;
3185 4215
3186 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3187} 4217}
3188 4218
3189void noinline 4219ecb_noinline
4220void
3190ev_io_stop (EV_P_ ev_io *w) 4221ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3191{ 4222{
3192 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3193 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
3194 return; 4225 return;
3195 4226
3196 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4227 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3197 4228
4229#if EV_VERIFY >= 2
4230 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4231#endif
3198 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3199 4233
3200 wlist_del (&anfds[w->fd].head, (WL)w); 4234 wlist_del (&anfds[w->fd].head, (WL)w);
3201 ev_stop (EV_A_ (W)w); 4235 ev_stop (EV_A_ (W)w);
3202 4236
3203 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4237 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3204 4238
3205 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
3206} 4240}
3207 4241
3208void noinline 4242ecb_noinline
4243void
3209ev_timer_start (EV_P_ ev_timer *w) 4244ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3210{ 4245{
3211 if (expect_false (ev_is_active (w))) 4246 if (ecb_expect_false (ev_is_active (w)))
3212 return; 4247 return;
3213 4248
3214 ev_at (w) += mn_now; 4249 ev_at (w) += mn_now;
3215 4250
3216 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4251 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3217 4252
3218 EV_FREQUENT_CHECK; 4253 EV_FREQUENT_CHECK;
3219 4254
3220 ++timercnt; 4255 ++timercnt;
3221 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4256 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3222 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4257 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3223 ANHE_w (timers [ev_active (w)]) = (WT)w; 4258 ANHE_w (timers [ev_active (w)]) = (WT)w;
3224 ANHE_at_cache (timers [ev_active (w)]); 4259 ANHE_at_cache (timers [ev_active (w)]);
3225 upheap (timers, ev_active (w)); 4260 upheap (timers, ev_active (w));
3226 4261
3227 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
3228 4263
3229 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4264 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3230} 4265}
3231 4266
3232void noinline 4267ecb_noinline
4268void
3233ev_timer_stop (EV_P_ ev_timer *w) 4269ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3234{ 4270{
3235 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3236 if (expect_false (!ev_is_active (w))) 4272 if (ecb_expect_false (!ev_is_active (w)))
3237 return; 4273 return;
3238 4274
3239 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3240 4276
3241 { 4277 {
… …
3243 4279
3244 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4280 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3245 4281
3246 --timercnt; 4282 --timercnt;
3247 4283
3248 if (expect_true (active < timercnt + HEAP0)) 4284 if (ecb_expect_true (active < timercnt + HEAP0))
3249 { 4285 {
3250 timers [active] = timers [timercnt + HEAP0]; 4286 timers [active] = timers [timercnt + HEAP0];
3251 adjustheap (timers, timercnt, active); 4287 adjustheap (timers, timercnt, active);
3252 } 4288 }
3253 } 4289 }
… …
3257 ev_stop (EV_A_ (W)w); 4293 ev_stop (EV_A_ (W)w);
3258 4294
3259 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3260} 4296}
3261 4297
3262void noinline 4298ecb_noinline
4299void
3263ev_timer_again (EV_P_ ev_timer *w) 4300ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3264{ 4301{
3265 EV_FREQUENT_CHECK; 4302 EV_FREQUENT_CHECK;
4303
4304 clear_pending (EV_A_ (W)w);
3266 4305
3267 if (ev_is_active (w)) 4306 if (ev_is_active (w))
3268 { 4307 {
3269 if (w->repeat) 4308 if (w->repeat)
3270 { 4309 {
… …
3283 4322
3284 EV_FREQUENT_CHECK; 4323 EV_FREQUENT_CHECK;
3285} 4324}
3286 4325
3287ev_tstamp 4326ev_tstamp
3288ev_timer_remaining (EV_P_ ev_timer *w) 4327ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3289{ 4328{
3290 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4329 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3291} 4330}
3292 4331
3293#if EV_PERIODIC_ENABLE 4332#if EV_PERIODIC_ENABLE
3294void noinline 4333ecb_noinline
4334void
3295ev_periodic_start (EV_P_ ev_periodic *w) 4335ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3296{ 4336{
3297 if (expect_false (ev_is_active (w))) 4337 if (ecb_expect_false (ev_is_active (w)))
3298 return; 4338 return;
4339
4340#if EV_USE_TIMERFD
4341 if (timerfd == -2)
4342 evtimerfd_init (EV_A);
4343#endif
3299 4344
3300 if (w->reschedule_cb) 4345 if (w->reschedule_cb)
3301 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4346 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3302 else if (w->interval) 4347 else if (w->interval)
3303 { 4348 {
… …
3309 4354
3310 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3311 4356
3312 ++periodiccnt; 4357 ++periodiccnt;
3313 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4358 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3314 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4359 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3315 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4360 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3316 ANHE_at_cache (periodics [ev_active (w)]); 4361 ANHE_at_cache (periodics [ev_active (w)]);
3317 upheap (periodics, ev_active (w)); 4362 upheap (periodics, ev_active (w));
3318 4363
3319 EV_FREQUENT_CHECK; 4364 EV_FREQUENT_CHECK;
3320 4365
3321 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4366 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3322} 4367}
3323 4368
3324void noinline 4369ecb_noinline
4370void
3325ev_periodic_stop (EV_P_ ev_periodic *w) 4371ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3326{ 4372{
3327 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
3329 return; 4375 return;
3330 4376
3331 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3332 4378
3333 { 4379 {
… …
3335 4381
3336 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4382 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3337 4383
3338 --periodiccnt; 4384 --periodiccnt;
3339 4385
3340 if (expect_true (active < periodiccnt + HEAP0)) 4386 if (ecb_expect_true (active < periodiccnt + HEAP0))
3341 { 4387 {
3342 periodics [active] = periodics [periodiccnt + HEAP0]; 4388 periodics [active] = periodics [periodiccnt + HEAP0];
3343 adjustheap (periodics, periodiccnt, active); 4389 adjustheap (periodics, periodiccnt, active);
3344 } 4390 }
3345 } 4391 }
… …
3347 ev_stop (EV_A_ (W)w); 4393 ev_stop (EV_A_ (W)w);
3348 4394
3349 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
3350} 4396}
3351 4397
3352void noinline 4398ecb_noinline
4399void
3353ev_periodic_again (EV_P_ ev_periodic *w) 4400ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3354{ 4401{
3355 /* TODO: use adjustheap and recalculation */ 4402 /* TODO: use adjustheap and recalculation */
3356 ev_periodic_stop (EV_A_ w); 4403 ev_periodic_stop (EV_A_ w);
3357 ev_periodic_start (EV_A_ w); 4404 ev_periodic_start (EV_A_ w);
3358} 4405}
… …
3362# define SA_RESTART 0 4409# define SA_RESTART 0
3363#endif 4410#endif
3364 4411
3365#if EV_SIGNAL_ENABLE 4412#if EV_SIGNAL_ENABLE
3366 4413
3367void noinline 4414ecb_noinline
4415void
3368ev_signal_start (EV_P_ ev_signal *w) 4416ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3369{ 4417{
3370 if (expect_false (ev_is_active (w))) 4418 if (ecb_expect_false (ev_is_active (w)))
3371 return; 4419 return;
3372 4420
3373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4421 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3374 4422
3375#if EV_MULTIPLICITY 4423#if EV_MULTIPLICITY
3376 assert (("libev: a signal must not be attached to two different loops", 4424 assert (("libev: a signal must not be attached to two different loops",
3377 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4425 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3378 4426
3379 signals [w->signum - 1].loop = EV_A; 4427 signals [w->signum - 1].loop = EV_A;
4428 ECB_MEMORY_FENCE_RELEASE;
3380#endif 4429#endif
3381 4430
3382 EV_FREQUENT_CHECK; 4431 EV_FREQUENT_CHECK;
3383 4432
3384#if EV_USE_SIGNALFD 4433#if EV_USE_SIGNALFD
… …
3443 } 4492 }
3444 4493
3445 EV_FREQUENT_CHECK; 4494 EV_FREQUENT_CHECK;
3446} 4495}
3447 4496
3448void noinline 4497ecb_noinline
4498void
3449ev_signal_stop (EV_P_ ev_signal *w) 4499ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3450{ 4500{
3451 clear_pending (EV_A_ (W)w); 4501 clear_pending (EV_A_ (W)w);
3452 if (expect_false (!ev_is_active (w))) 4502 if (ecb_expect_false (!ev_is_active (w)))
3453 return; 4503 return;
3454 4504
3455 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3456 4506
3457 wlist_del (&signals [w->signum - 1].head, (WL)w); 4507 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3485#endif 4535#endif
3486 4536
3487#if EV_CHILD_ENABLE 4537#if EV_CHILD_ENABLE
3488 4538
3489void 4539void
3490ev_child_start (EV_P_ ev_child *w) 4540ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3491{ 4541{
3492#if EV_MULTIPLICITY 4542#if EV_MULTIPLICITY
3493 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4543 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3494#endif 4544#endif
3495 if (expect_false (ev_is_active (w))) 4545 if (ecb_expect_false (ev_is_active (w)))
3496 return; 4546 return;
3497 4547
3498 EV_FREQUENT_CHECK; 4548 EV_FREQUENT_CHECK;
3499 4549
3500 ev_start (EV_A_ (W)w, 1); 4550 ev_start (EV_A_ (W)w, 1);
… …
3502 4552
3503 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
3504} 4554}
3505 4555
3506void 4556void
3507ev_child_stop (EV_P_ ev_child *w) 4557ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3508{ 4558{
3509 clear_pending (EV_A_ (W)w); 4559 clear_pending (EV_A_ (W)w);
3510 if (expect_false (!ev_is_active (w))) 4560 if (ecb_expect_false (!ev_is_active (w)))
3511 return; 4561 return;
3512 4562
3513 EV_FREQUENT_CHECK; 4563 EV_FREQUENT_CHECK;
3514 4564
3515 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4565 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3529 4579
3530#define DEF_STAT_INTERVAL 5.0074891 4580#define DEF_STAT_INTERVAL 5.0074891
3531#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4581#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3532#define MIN_STAT_INTERVAL 0.1074891 4582#define MIN_STAT_INTERVAL 0.1074891
3533 4583
3534static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4584ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3535 4585
3536#if EV_USE_INOTIFY 4586#if EV_USE_INOTIFY
3537 4587
3538/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4588/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3539# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4589# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3540 4590
3541static void noinline 4591ecb_noinline
4592static void
3542infy_add (EV_P_ ev_stat *w) 4593infy_add (EV_P_ ev_stat *w)
3543{ 4594{
3544 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); 4595 w->wd = inotify_add_watch (fs_fd, w->path,
4596 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4597 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4598 | IN_DONT_FOLLOW | IN_MASK_ADD);
3545 4599
3546 if (w->wd >= 0) 4600 if (w->wd >= 0)
3547 { 4601 {
3548 struct statfs sfs; 4602 struct statfs sfs;
3549 4603
… …
3553 4607
3554 if (!fs_2625) 4608 if (!fs_2625)
3555 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4609 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3556 else if (!statfs (w->path, &sfs) 4610 else if (!statfs (w->path, &sfs)
3557 && (sfs.f_type == 0x1373 /* devfs */ 4611 && (sfs.f_type == 0x1373 /* devfs */
4612 || sfs.f_type == 0x4006 /* fat */
4613 || sfs.f_type == 0x4d44 /* msdos */
3558 || sfs.f_type == 0xEF53 /* ext2/3 */ 4614 || sfs.f_type == 0xEF53 /* ext2/3 */
4615 || sfs.f_type == 0x72b6 /* jffs2 */
4616 || sfs.f_type == 0x858458f6 /* ramfs */
4617 || sfs.f_type == 0x5346544e /* ntfs */
3559 || sfs.f_type == 0x3153464a /* jfs */ 4618 || sfs.f_type == 0x3153464a /* jfs */
4619 || sfs.f_type == 0x9123683e /* btrfs */
3560 || sfs.f_type == 0x52654973 /* reiser3 */ 4620 || sfs.f_type == 0x52654973 /* reiser3 */
3561 || sfs.f_type == 0x01021994 /* tempfs */ 4621 || sfs.f_type == 0x01021994 /* tmpfs */
3562 || sfs.f_type == 0x58465342 /* xfs */)) 4622 || sfs.f_type == 0x58465342 /* xfs */))
3563 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3564 else 4624 else
3565 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3566 } 4626 }
… …
3601 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4661 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3602 ev_timer_again (EV_A_ &w->timer); 4662 ev_timer_again (EV_A_ &w->timer);
3603 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3604} 4664}
3605 4665
3606static void noinline 4666ecb_noinline
4667static void
3607infy_del (EV_P_ ev_stat *w) 4668infy_del (EV_P_ ev_stat *w)
3608{ 4669{
3609 int slot; 4670 int slot;
3610 int wd = w->wd; 4671 int wd = w->wd;
3611 4672
… …
3618 4679
3619 /* remove this watcher, if others are watching it, they will rearm */ 4680 /* remove this watcher, if others are watching it, they will rearm */
3620 inotify_rm_watch (fs_fd, wd); 4681 inotify_rm_watch (fs_fd, wd);
3621} 4682}
3622 4683
3623static void noinline 4684ecb_noinline
4685static void
3624infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3625{ 4687{
3626 if (slot < 0) 4688 if (slot < 0)
3627 /* overflow, need to check for all hash slots */ 4689 /* overflow, need to check for all hash slots */
3628 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3664 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3665 ofs += sizeof (struct inotify_event) + ev->len; 4727 ofs += sizeof (struct inotify_event) + ev->len;
3666 } 4728 }
3667} 4729}
3668 4730
3669inline_size void ecb_cold 4731inline_size ecb_cold
4732void
3670ev_check_2625 (EV_P) 4733ev_check_2625 (EV_P)
3671{ 4734{
3672 /* kernels < 2.6.25 are borked 4735 /* kernels < 2.6.25 are borked
3673 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4736 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3674 */ 4737 */
… …
3679} 4742}
3680 4743
3681inline_size int 4744inline_size int
3682infy_newfd (void) 4745infy_newfd (void)
3683{ 4746{
3684#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4747#if defined IN_CLOEXEC && defined IN_NONBLOCK
3685 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4748 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3686 if (fd >= 0) 4749 if (fd >= 0)
3687 return fd; 4750 return fd;
3688#endif 4751#endif
3689 return inotify_init (); 4752 return inotify_init ();
… …
3764#else 4827#else
3765# define EV_LSTAT(p,b) lstat (p, b) 4828# define EV_LSTAT(p,b) lstat (p, b)
3766#endif 4829#endif
3767 4830
3768void 4831void
3769ev_stat_stat (EV_P_ ev_stat *w) 4832ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3770{ 4833{
3771 if (lstat (w->path, &w->attr) < 0) 4834 if (lstat (w->path, &w->attr) < 0)
3772 w->attr.st_nlink = 0; 4835 w->attr.st_nlink = 0;
3773 else if (!w->attr.st_nlink) 4836 else if (!w->attr.st_nlink)
3774 w->attr.st_nlink = 1; 4837 w->attr.st_nlink = 1;
3775} 4838}
3776 4839
3777static void noinline 4840ecb_noinline
4841static void
3778stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4842stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3779{ 4843{
3780 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4844 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3781 4845
3782 ev_statdata prev = w->attr; 4846 ev_statdata prev = w->attr;
… …
3813 ev_feed_event (EV_A_ w, EV_STAT); 4877 ev_feed_event (EV_A_ w, EV_STAT);
3814 } 4878 }
3815} 4879}
3816 4880
3817void 4881void
3818ev_stat_start (EV_P_ ev_stat *w) 4882ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3819{ 4883{
3820 if (expect_false (ev_is_active (w))) 4884 if (ecb_expect_false (ev_is_active (w)))
3821 return; 4885 return;
3822 4886
3823 ev_stat_stat (EV_A_ w); 4887 ev_stat_stat (EV_A_ w);
3824 4888
3825 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4889 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3844 4908
3845 EV_FREQUENT_CHECK; 4909 EV_FREQUENT_CHECK;
3846} 4910}
3847 4911
3848void 4912void
3849ev_stat_stop (EV_P_ ev_stat *w) 4913ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3850{ 4914{
3851 clear_pending (EV_A_ (W)w); 4915 clear_pending (EV_A_ (W)w);
3852 if (expect_false (!ev_is_active (w))) 4916 if (ecb_expect_false (!ev_is_active (w)))
3853 return; 4917 return;
3854 4918
3855 EV_FREQUENT_CHECK; 4919 EV_FREQUENT_CHECK;
3856 4920
3857#if EV_USE_INOTIFY 4921#if EV_USE_INOTIFY
… …
3870} 4934}
3871#endif 4935#endif
3872 4936
3873#if EV_IDLE_ENABLE 4937#if EV_IDLE_ENABLE
3874void 4938void
3875ev_idle_start (EV_P_ ev_idle *w) 4939ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3876{ 4940{
3877 if (expect_false (ev_is_active (w))) 4941 if (ecb_expect_false (ev_is_active (w)))
3878 return; 4942 return;
3879 4943
3880 pri_adjust (EV_A_ (W)w); 4944 pri_adjust (EV_A_ (W)w);
3881 4945
3882 EV_FREQUENT_CHECK; 4946 EV_FREQUENT_CHECK;
… …
3885 int active = ++idlecnt [ABSPRI (w)]; 4949 int active = ++idlecnt [ABSPRI (w)];
3886 4950
3887 ++idleall; 4951 ++idleall;
3888 ev_start (EV_A_ (W)w, active); 4952 ev_start (EV_A_ (W)w, active);
3889 4953
3890 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4954 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3891 idles [ABSPRI (w)][active - 1] = w; 4955 idles [ABSPRI (w)][active - 1] = w;
3892 } 4956 }
3893 4957
3894 EV_FREQUENT_CHECK; 4958 EV_FREQUENT_CHECK;
3895} 4959}
3896 4960
3897void 4961void
3898ev_idle_stop (EV_P_ ev_idle *w) 4962ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3899{ 4963{
3900 clear_pending (EV_A_ (W)w); 4964 clear_pending (EV_A_ (W)w);
3901 if (expect_false (!ev_is_active (w))) 4965 if (ecb_expect_false (!ev_is_active (w)))
3902 return; 4966 return;
3903 4967
3904 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
3905 4969
3906 { 4970 {
… …
3917} 4981}
3918#endif 4982#endif
3919 4983
3920#if EV_PREPARE_ENABLE 4984#if EV_PREPARE_ENABLE
3921void 4985void
3922ev_prepare_start (EV_P_ ev_prepare *w) 4986ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3923{ 4987{
3924 if (expect_false (ev_is_active (w))) 4988 if (ecb_expect_false (ev_is_active (w)))
3925 return; 4989 return;
3926 4990
3927 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
3928 4992
3929 ev_start (EV_A_ (W)w, ++preparecnt); 4993 ev_start (EV_A_ (W)w, ++preparecnt);
3930 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4994 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3931 prepares [preparecnt - 1] = w; 4995 prepares [preparecnt - 1] = w;
3932 4996
3933 EV_FREQUENT_CHECK; 4997 EV_FREQUENT_CHECK;
3934} 4998}
3935 4999
3936void 5000void
3937ev_prepare_stop (EV_P_ ev_prepare *w) 5001ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3938{ 5002{
3939 clear_pending (EV_A_ (W)w); 5003 clear_pending (EV_A_ (W)w);
3940 if (expect_false (!ev_is_active (w))) 5004 if (ecb_expect_false (!ev_is_active (w)))
3941 return; 5005 return;
3942 5006
3943 EV_FREQUENT_CHECK; 5007 EV_FREQUENT_CHECK;
3944 5008
3945 { 5009 {
… …
3955} 5019}
3956#endif 5020#endif
3957 5021
3958#if EV_CHECK_ENABLE 5022#if EV_CHECK_ENABLE
3959void 5023void
3960ev_check_start (EV_P_ ev_check *w) 5024ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3961{ 5025{
3962 if (expect_false (ev_is_active (w))) 5026 if (ecb_expect_false (ev_is_active (w)))
3963 return; 5027 return;
3964 5028
3965 EV_FREQUENT_CHECK; 5029 EV_FREQUENT_CHECK;
3966 5030
3967 ev_start (EV_A_ (W)w, ++checkcnt); 5031 ev_start (EV_A_ (W)w, ++checkcnt);
3968 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5032 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3969 checks [checkcnt - 1] = w; 5033 checks [checkcnt - 1] = w;
3970 5034
3971 EV_FREQUENT_CHECK; 5035 EV_FREQUENT_CHECK;
3972} 5036}
3973 5037
3974void 5038void
3975ev_check_stop (EV_P_ ev_check *w) 5039ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3976{ 5040{
3977 clear_pending (EV_A_ (W)w); 5041 clear_pending (EV_A_ (W)w);
3978 if (expect_false (!ev_is_active (w))) 5042 if (ecb_expect_false (!ev_is_active (w)))
3979 return; 5043 return;
3980 5044
3981 EV_FREQUENT_CHECK; 5045 EV_FREQUENT_CHECK;
3982 5046
3983 { 5047 {
… …
3992 EV_FREQUENT_CHECK; 5056 EV_FREQUENT_CHECK;
3993} 5057}
3994#endif 5058#endif
3995 5059
3996#if EV_EMBED_ENABLE 5060#if EV_EMBED_ENABLE
3997void noinline 5061ecb_noinline
5062void
3998ev_embed_sweep (EV_P_ ev_embed *w) 5063ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3999{ 5064{
4000 ev_run (w->other, EVRUN_NOWAIT); 5065 ev_run (w->other, EVRUN_NOWAIT);
4001} 5066}
4002 5067
4003static void 5068static void
… …
4025 ev_run (EV_A_ EVRUN_NOWAIT); 5090 ev_run (EV_A_ EVRUN_NOWAIT);
4026 } 5091 }
4027 } 5092 }
4028} 5093}
4029 5094
5095#if EV_FORK_ENABLE
4030static void 5096static void
4031embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5097embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4032{ 5098{
4033 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5099 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4034 5100
… …
4041 ev_run (EV_A_ EVRUN_NOWAIT); 5107 ev_run (EV_A_ EVRUN_NOWAIT);
4042 } 5108 }
4043 5109
4044 ev_embed_start (EV_A_ w); 5110 ev_embed_start (EV_A_ w);
4045} 5111}
5112#endif
4046 5113
4047#if 0 5114#if 0
4048static void 5115static void
4049embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5116embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4050{ 5117{
4051 ev_idle_stop (EV_A_ idle); 5118 ev_idle_stop (EV_A_ idle);
4052} 5119}
4053#endif 5120#endif
4054 5121
4055void 5122void
4056ev_embed_start (EV_P_ ev_embed *w) 5123ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4057{ 5124{
4058 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
4059 return; 5126 return;
4060 5127
4061 { 5128 {
4062 EV_P = w->other; 5129 EV_P = w->other;
4063 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5130 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4071 5138
4072 ev_prepare_init (&w->prepare, embed_prepare_cb); 5139 ev_prepare_init (&w->prepare, embed_prepare_cb);
4073 ev_set_priority (&w->prepare, EV_MINPRI); 5140 ev_set_priority (&w->prepare, EV_MINPRI);
4074 ev_prepare_start (EV_A_ &w->prepare); 5141 ev_prepare_start (EV_A_ &w->prepare);
4075 5142
5143#if EV_FORK_ENABLE
4076 ev_fork_init (&w->fork, embed_fork_cb); 5144 ev_fork_init (&w->fork, embed_fork_cb);
4077 ev_fork_start (EV_A_ &w->fork); 5145 ev_fork_start (EV_A_ &w->fork);
5146#endif
4078 5147
4079 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5148 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4080 5149
4081 ev_start (EV_A_ (W)w, 1); 5150 ev_start (EV_A_ (W)w, 1);
4082 5151
4083 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
4084} 5153}
4085 5154
4086void 5155void
4087ev_embed_stop (EV_P_ ev_embed *w) 5156ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4088{ 5157{
4089 clear_pending (EV_A_ (W)w); 5158 clear_pending (EV_A_ (W)w);
4090 if (expect_false (!ev_is_active (w))) 5159 if (ecb_expect_false (!ev_is_active (w)))
4091 return; 5160 return;
4092 5161
4093 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
4094 5163
4095 ev_io_stop (EV_A_ &w->io); 5164 ev_io_stop (EV_A_ &w->io);
4096 ev_prepare_stop (EV_A_ &w->prepare); 5165 ev_prepare_stop (EV_A_ &w->prepare);
5166#if EV_FORK_ENABLE
4097 ev_fork_stop (EV_A_ &w->fork); 5167 ev_fork_stop (EV_A_ &w->fork);
5168#endif
4098 5169
4099 ev_stop (EV_A_ (W)w); 5170 ev_stop (EV_A_ (W)w);
4100 5171
4101 EV_FREQUENT_CHECK; 5172 EV_FREQUENT_CHECK;
4102} 5173}
4103#endif 5174#endif
4104 5175
4105#if EV_FORK_ENABLE 5176#if EV_FORK_ENABLE
4106void 5177void
4107ev_fork_start (EV_P_ ev_fork *w) 5178ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4108{ 5179{
4109 if (expect_false (ev_is_active (w))) 5180 if (ecb_expect_false (ev_is_active (w)))
4110 return; 5181 return;
4111 5182
4112 EV_FREQUENT_CHECK; 5183 EV_FREQUENT_CHECK;
4113 5184
4114 ev_start (EV_A_ (W)w, ++forkcnt); 5185 ev_start (EV_A_ (W)w, ++forkcnt);
4115 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5186 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4116 forks [forkcnt - 1] = w; 5187 forks [forkcnt - 1] = w;
4117 5188
4118 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
4119} 5190}
4120 5191
4121void 5192void
4122ev_fork_stop (EV_P_ ev_fork *w) 5193ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4123{ 5194{
4124 clear_pending (EV_A_ (W)w); 5195 clear_pending (EV_A_ (W)w);
4125 if (expect_false (!ev_is_active (w))) 5196 if (ecb_expect_false (!ev_is_active (w)))
4126 return; 5197 return;
4127 5198
4128 EV_FREQUENT_CHECK; 5199 EV_FREQUENT_CHECK;
4129 5200
4130 { 5201 {
… …
4140} 5211}
4141#endif 5212#endif
4142 5213
4143#if EV_CLEANUP_ENABLE 5214#if EV_CLEANUP_ENABLE
4144void 5215void
4145ev_cleanup_start (EV_P_ ev_cleanup *w) 5216ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4146{ 5217{
4147 if (expect_false (ev_is_active (w))) 5218 if (ecb_expect_false (ev_is_active (w)))
4148 return; 5219 return;
4149 5220
4150 EV_FREQUENT_CHECK; 5221 EV_FREQUENT_CHECK;
4151 5222
4152 ev_start (EV_A_ (W)w, ++cleanupcnt); 5223 ev_start (EV_A_ (W)w, ++cleanupcnt);
4153 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5224 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4154 cleanups [cleanupcnt - 1] = w; 5225 cleanups [cleanupcnt - 1] = w;
4155 5226
4156 /* cleanup watchers should never keep a refcount on the loop */ 5227 /* cleanup watchers should never keep a refcount on the loop */
4157 ev_unref (EV_A); 5228 ev_unref (EV_A);
4158 EV_FREQUENT_CHECK; 5229 EV_FREQUENT_CHECK;
4159} 5230}
4160 5231
4161void 5232void
4162ev_cleanup_stop (EV_P_ ev_cleanup *w) 5233ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4163{ 5234{
4164 clear_pending (EV_A_ (W)w); 5235 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w))) 5236 if (ecb_expect_false (!ev_is_active (w)))
4166 return; 5237 return;
4167 5238
4168 EV_FREQUENT_CHECK; 5239 EV_FREQUENT_CHECK;
4169 ev_ref (EV_A); 5240 ev_ref (EV_A);
4170 5241
… …
4181} 5252}
4182#endif 5253#endif
4183 5254
4184#if EV_ASYNC_ENABLE 5255#if EV_ASYNC_ENABLE
4185void 5256void
4186ev_async_start (EV_P_ ev_async *w) 5257ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4187{ 5258{
4188 if (expect_false (ev_is_active (w))) 5259 if (ecb_expect_false (ev_is_active (w)))
4189 return; 5260 return;
4190 5261
4191 w->sent = 0; 5262 w->sent = 0;
4192 5263
4193 evpipe_init (EV_A); 5264 evpipe_init (EV_A);
4194 5265
4195 EV_FREQUENT_CHECK; 5266 EV_FREQUENT_CHECK;
4196 5267
4197 ev_start (EV_A_ (W)w, ++asynccnt); 5268 ev_start (EV_A_ (W)w, ++asynccnt);
4198 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5269 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4199 asyncs [asynccnt - 1] = w; 5270 asyncs [asynccnt - 1] = w;
4200 5271
4201 EV_FREQUENT_CHECK; 5272 EV_FREQUENT_CHECK;
4202} 5273}
4203 5274
4204void 5275void
4205ev_async_stop (EV_P_ ev_async *w) 5276ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4206{ 5277{
4207 clear_pending (EV_A_ (W)w); 5278 clear_pending (EV_A_ (W)w);
4208 if (expect_false (!ev_is_active (w))) 5279 if (ecb_expect_false (!ev_is_active (w)))
4209 return; 5280 return;
4210 5281
4211 EV_FREQUENT_CHECK; 5282 EV_FREQUENT_CHECK;
4212 5283
4213 { 5284 {
… …
4221 5292
4222 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4223} 5294}
4224 5295
4225void 5296void
4226ev_async_send (EV_P_ ev_async *w) 5297ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4227{ 5298{
4228 w->sent = 1; 5299 w->sent = 1;
4229 evpipe_write (EV_A_ &async_pending); 5300 evpipe_write (EV_A_ &async_pending);
4230} 5301}
4231#endif 5302#endif
… …
4268 5339
4269 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5340 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4270} 5341}
4271 5342
4272void 5343void
4273ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5344ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4274{ 5345{
4275 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5346 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4276
4277 if (expect_false (!once))
4278 {
4279 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4280 return;
4281 }
4282 5347
4283 once->cb = cb; 5348 once->cb = cb;
4284 once->arg = arg; 5349 once->arg = arg;
4285 5350
4286 ev_init (&once->io, once_cb_io); 5351 ev_init (&once->io, once_cb_io);
… …
4299} 5364}
4300 5365
4301/*****************************************************************************/ 5366/*****************************************************************************/
4302 5367
4303#if EV_WALK_ENABLE 5368#if EV_WALK_ENABLE
4304void ecb_cold 5369ecb_cold
5370void
4305ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4306{ 5372{
4307 int i, j; 5373 int i, j;
4308 ev_watcher_list *wl, *wn; 5374 ev_watcher_list *wl, *wn;
4309 5375
4310 if (types & (EV_IO | EV_EMBED)) 5376 if (types & (EV_IO | EV_EMBED))
… …
4416 5482
4417#if EV_MULTIPLICITY 5483#if EV_MULTIPLICITY
4418 #include "ev_wrap.h" 5484 #include "ev_wrap.h"
4419#endif 5485#endif
4420 5486
4421EV_CPP(})
4422

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