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Comparing libev/ev.c (file contents):
Revision 1.391 by root, Thu Aug 4 13:57:16 2011 UTC vs.
Revision 1.519 by root, Sat Dec 28 07:37:07 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 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) 760#endif
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) 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 */
545#endif 769#endif
546 770
547#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
774 #if __i386 || __i386__
550 #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")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __amd64 778 #elif ECB_GCC_AMD64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
557 #endif 823 #endif
558 #endif 824 #endif
559#endif 825#endif
560 826
561#ifndef ECB_MEMORY_FENCE 827#ifndef ECB_MEMORY_FENCE
562 #if ECB_GCC_VERSION(4,4) 828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
563 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
564 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
565 #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()
566 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
567 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
568 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
569 #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 */
570 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
571 #elif defined(_WIN32) 855 #elif defined _WIN32
572 #include <WinNT.h> 856 #include <WinNT.h>
573 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
574 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
575 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 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 ()
576 #endif 866 #endif
577#endif 867#endif
578 868
579#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
877 #endif
878#endif
879
880#ifndef ECB_MEMORY_FENCE
881 #if !ECB_AVOID_PTHREADS
580 /* 882 /*
581 * if you get undefined symbol references to pthread_mutex_lock, 883 * if you get undefined symbol references to pthread_mutex_lock,
582 * or failure to find pthread.h, then you should implement 884 * or failure to find pthread.h, then you should implement
583 * the ECB_MEMORY_FENCE operations for your cpu/compiler 885 * the ECB_MEMORY_FENCE operations for your cpu/compiler
584 * OR provide pthread.h and link against the posix thread library 886 * OR provide pthread.h and link against the posix thread library
585 * of your system. 887 * of your system.
586 */ 888 */
587 #include <pthread.h> 889 #include <pthread.h>
588 #define ECB_NEEDS_PTHREADS 1 890 #define ECB_NEEDS_PTHREADS 1
589 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 891 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
590 892
591 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
592 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
895 #endif
896#endif
897
898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
593 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
900#endif
901
902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
594 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
595#endif 904#endif
596 905
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
597/*****************************************************************************/ 910/*****************************************************************************/
598 911
599#define ECB_C99 (__STDC_VERSION__ >= 199901L) 912#if ECB_CPP
600
601#if __cplusplus
602 #define ecb_inline static inline 913 #define ecb_inline static inline
603#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
604 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
605#elif ECB_C99 916#elif ECB_C99
606 #define ecb_inline static inline 917 #define ecb_inline static inline
… …
620 931
621#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
622#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
623#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
624#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))
625 937
626#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
627 939
628#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
629 #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)
630 #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)
631 #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)
632 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
633#else 964#else
634 #define ecb_attribute(attrlist)
635 #define ecb_is_constant(expr) 0
636 #define ecb_expect(expr,value) (expr)
637 #define ecb_prefetch(addr,rw,locality) 965 #define ecb_prefetch(addr,rw,locality)
638#endif 966#endif
639 967
640/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
641#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; };
642 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
643#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
644 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
645#endif 975#endif
646 976
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
647#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
648#define ecb_noreturn ecb_attribute ((__noreturn__)) 995#endif
996
649#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
650#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
651#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
652 1012
653#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
654 #define ecb_artificial ecb_attribute ((__artificial__)) 1014 #define ecb_artificial ecb_attribute ((__artificial__))
655 #define ecb_hot ecb_attribute ((__hot__)) 1015 #define ecb_hot ecb_attribute ((__hot__))
656 #define ecb_cold ecb_attribute ((__cold__)) 1016 #define ecb_cold ecb_attribute ((__cold__))
… …
668/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
669#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
670#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
671 1031
672/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
673#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))
674 /* 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 */
675 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
676 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
677 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
678 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
679 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
680 /* no popcountll */ 1043 /* no popcountll */
681#else 1044#else
682 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
683 ecb_function_ int 1046 ecb_function_ ecb_const int
684 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
685 { 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
686 int r = 0; 1054 int r = 0;
687 1055
688 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
689 1057
690#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
700 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
701 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
702#endif 1070#endif
703 1071
704 return r; 1072 return r;
1073#endif
705 } 1074 }
706 1075
707 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
708 ecb_function_ int 1077 ecb_function_ ecb_const int
709 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
710 { 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
711 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
712 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
713 } 1088 }
714 1089
715 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
716 ecb_function_ int 1091 ecb_function_ ecb_const int
717 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
718 { 1093 {
719 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
720 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
721 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
722 x *= 0x01010101; 1097 x *= 0x01010101;
723 1098
724 return x >> 24; 1099 return x >> 24;
725 } 1100 }
726 1101
727 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
728 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
729 { 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
730 int r = 0; 1110 int r = 0;
731 1111
732 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
733 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
734 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
735 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
736 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
737 1117
738 return r; 1118 return r;
1119#endif
739 } 1120 }
740 1121
741 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
742 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
743 { 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
744 int r = 0; 1130 int r = 0;
745 1131
746 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
747 1133
748 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
749 } 1136 }
750#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}
751 1173
752/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
753/* so for this version we are lazy */ 1175/* so for this version we are lazy */
754ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
755ecb_function_ int 1177ecb_function_ ecb_const int
756ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
757{ 1179{
758 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
759} 1181}
760 1182
761ecb_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);
762ecb_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);
763ecb_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);
764ecb_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);
765ecb_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);
766ecb_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);
767ecb_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);
768ecb_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);
769 1191
770ecb_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); }
771ecb_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); }
772ecb_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); }
773ecb_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); }
774ecb_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); }
775ecb_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); }
776ecb_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); }
777ecb_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); }
778 1200
779#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
780 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
781 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
782 #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)))
783#else 1214#else
784 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
785 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
786 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
787 { 1218 {
788 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
789 } 1220 }
790 1221
791 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
792 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
793 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
794 { 1225 {
795 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
796 } 1227 }
797 1228
798 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
799 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
800 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
801 { 1232 {
802 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
803 } 1234 }
804#endif 1235#endif
805 1236
806#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
807 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
808#else 1239#else
809 /* 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 :/ */
810 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
811 ecb_function_ void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
812#endif 1243#endif
813 1244
814/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
815#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
816 1247
817ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
818ecb_function_ unsigned char 1249ecb_inline ecb_const uint32_t
819ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
820{ 1251{
821 const uint32_t u = 0x11223344; 1252 /* the union code still generates code under pressure in gcc, */
822 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
823} 1274}
824 1275
825ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
826ecb_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; }
827ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
828ecb_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; }
829 1280
830#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
831 #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))
832#else 1283#else
833 #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)))
1285#endif
1286
1287#if ECB_CPP
1288 template<typename T>
1289 static inline T ecb_div_rd (T val, T div)
1290 {
1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1292 }
1293 template<typename T>
1294 static inline T ecb_div_ru (T val, T div)
1295 {
1296 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1297 }
1298#else
1299 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1300 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
834#endif 1301#endif
835 1302
836#if ecb_cplusplus_does_not_suck 1303#if ecb_cplusplus_does_not_suck
837 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1304 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
838 template<typename T, int N> 1305 template<typename T, int N>
… …
842 } 1309 }
843#else 1310#else
844 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
845#endif 1312#endif
846 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
847#endif 1619#endif
848 1620
849/* ECB.H END */ 1621/* ECB.H END */
850 1622
851#define expect_false(cond) ecb_expect_false (cond) 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
852#define expect_true(cond) ecb_expect_true (cond) 1624/* if your architecture doesn't need memory fences, e.g. because it is
853#define noinline ecb_noinline 1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1627 * libev, in which cases the memory fences become nops.
1628 * alternatively, you can remove this #error and link against libpthread,
1629 * which will then provide the memory fences.
1630 */
1631# error "memory fences not defined for your architecture, please report"
1632#endif
1633
1634#ifndef ECB_MEMORY_FENCE
1635# define ECB_MEMORY_FENCE do { } while (0)
1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1638#endif
854 1639
855#define inline_size ecb_inline 1640#define inline_size ecb_inline
856 1641
857#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
858# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
859#else 1644#else
860# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
861#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/*****************************************************************************/
862 1713
863#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
864 1715
865#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
866# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
867#else 1718#else
868# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
869#endif 1720#endif
870 1721
871#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
872#define EMPTY2(a,b) /* used to suppress some warnings */
873 1723
874typedef ev_watcher *W; 1724typedef ev_watcher *W;
875typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
876typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
877 1727
… …
902# include "ev_win32.c" 1752# include "ev_win32.c"
903#endif 1753#endif
904 1754
905/*****************************************************************************/ 1755/*****************************************************************************/
906 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
907/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
908 1762
909#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
910# include <math.h> 1764# include <math.h>
911# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
912#else 1766#else
913 1767
914#include <float.h> 1768#include <float.h>
915 1769
916/* 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
917static ev_tstamp noinline 1772static ev_tstamp
918ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
919{ 1774{
920 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
921#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
922 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
923#else 1778#else
924 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
925#endif 1780#endif
926 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
927 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
928 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
929 { 1792 {
930 ev_tstamp f; 1793 ev_tstamp f;
931 1794
932 if (v == v - 1.) 1795 if (v == v - 1.)
933 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
934 1797
935 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
936 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
937 } 1800 }
938 1801
939 /* special treatment for negative args? */
940 if (expect_false (v < 0.))
941 {
942 ev_tstamp f = -ev_floor (-v);
943
944 return f - (f == v ? 0 : 1);
945 }
946
947 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
948 return (unsigned long)v; 1803 return (unsigned long)v;
949} 1804}
950 1805
951#endif 1806#endif
… …
954 1809
955#ifdef __linux 1810#ifdef __linux
956# include <sys/utsname.h> 1811# include <sys/utsname.h>
957#endif 1812#endif
958 1813
959static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
960ev_linux_version (void) 1816ev_linux_version (void)
961{ 1817{
962#ifdef __linux 1818#ifdef __linux
963 unsigned int v = 0; 1819 unsigned int v = 0;
964 struct utsname buf; 1820 struct utsname buf;
… …
993} 1849}
994 1850
995/*****************************************************************************/ 1851/*****************************************************************************/
996 1852
997#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
998static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
999ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1000{ 1857{
1001 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1002} 1859}
1003#endif 1860#endif
1004 1861
1005static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1006 1863
1007void ecb_cold 1864ecb_cold
1865void
1008ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1009{ 1867{
1010 syserr_cb = cb; 1868 syserr_cb = cb;
1011} 1869}
1012 1870
1013static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1014ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1015{ 1874{
1016 if (!msg) 1875 if (!msg)
1017 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1018 1877
… …
1031 abort (); 1890 abort ();
1032 } 1891 }
1033} 1892}
1034 1893
1035static void * 1894static void *
1036ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1037{ 1896{
1038#if __GLIBC__
1039 return realloc (ptr, size);
1040#else
1041 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1042 * 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
1043 * 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.
1044 */ 1902 */
1045 1903
1046 if (size) 1904 if (size)
1047 return realloc (ptr, size); 1905 return realloc (ptr, size);
1048 1906
1049 free (ptr); 1907 free (ptr);
1050 return 0; 1908 return 0;
1051#endif
1052} 1909}
1053 1910
1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1055 1912
1056void ecb_cold 1913ecb_cold
1914void
1057ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1058{ 1916{
1059 alloc = cb; 1917 alloc = cb;
1060} 1918}
1061 1919
1062inline_speed void * 1920inline_speed void *
… …
1089typedef struct 1947typedef struct
1090{ 1948{
1091 WL head; 1949 WL head;
1092 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1093 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) */
1094 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 */
1095 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1096#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1097 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1098#endif 1956#endif
1099#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1100 SOCKET handle; 1958 SOCKET handle;
… …
1150 #undef VAR 2008 #undef VAR
1151 }; 2009 };
1152 #include "ev_wrap.h" 2010 #include "ev_wrap.h"
1153 2011
1154 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1155 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 */
1156 2014
1157#else 2015#else
1158 2016
1159 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 */
1160 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1161 #include "ev_vars.h" 2019 #include "ev_vars.h"
1162 #undef VAR 2020 #undef VAR
1163 2021
1164 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1165 2023
1166#endif 2024#endif
1167 2025
1168#if EV_FEATURE_API 2026#if EV_FEATURE_API
1169# 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)
1170# 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)
1171# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1172#else 2030#else
1173# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1174# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1175# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1179 2037
1180/*****************************************************************************/ 2038/*****************************************************************************/
1181 2039
1182#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1183ev_tstamp 2041ev_tstamp
1184ev_time (void) 2042ev_time (void) EV_NOEXCEPT
1185{ 2043{
1186#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1187 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1188 { 2046 {
1189 struct timespec ts; 2047 struct timespec ts;
1190 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1191 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1192 } 2050 }
1193#endif 2051#endif
1194 2052
2053 {
1195 struct timeval tv; 2054 struct timeval tv;
1196 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1197 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1198} 2058}
1199#endif 2059#endif
1200 2060
1201inline_size ev_tstamp 2061inline_size ev_tstamp
1202get_clock (void) 2062get_clock (void)
1203{ 2063{
1204#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1205 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1206 { 2066 {
1207 struct timespec ts; 2067 struct timespec ts;
1208 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1209 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1210 } 2070 }
1211#endif 2071#endif
1212 2072
1213 return ev_time (); 2073 return ev_time ();
1214} 2074}
1215 2075
1216#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1217ev_tstamp 2077ev_tstamp
1218ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
1219{ 2079{
1220 return ev_rt_now; 2080 return ev_rt_now;
1221} 2081}
1222#endif 2082#endif
1223 2083
1224void 2084void
1225ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1226{ 2086{
1227 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1228 { 2088 {
1229#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1230 struct timespec ts; 2090 struct timespec ts;
1231 2091
1232 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1233 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1234#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) */
1235 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1236#else 2098#else
1237 struct timeval tv; 2099 struct timeval tv;
1238 2100
1239 /* 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 */
1240 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1258 2120
1259 do 2121 do
1260 ncur <<= 1; 2122 ncur <<= 1;
1261 while (cnt > ncur); 2123 while (cnt > ncur);
1262 2124
1263 /* 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 */
1264 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2126 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1265 { 2127 {
1266 ncur *= elem; 2128 ncur *= elem;
1267 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);
1268 ncur = ncur - sizeof (void *) * 4; 2130 ncur = ncur - sizeof (void *) * 4;
… …
1270 } 2132 }
1271 2133
1272 return ncur; 2134 return ncur;
1273} 2135}
1274 2136
1275static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1276array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1277{ 2140{
1278 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1279 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1280} 2143}
1281 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1282#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1283 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1284 2149
1285#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1286 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1287 { \ 2152 { \
1288 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1289 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1290 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1291 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1292 } 2157 }
1293 2158
1294#if 0 2159#if 0
1295#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1296 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1305 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1306 2171
1307/*****************************************************************************/ 2172/*****************************************************************************/
1308 2173
1309/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1310static void noinline 2175ecb_noinline
2176static void
1311pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1312{ 2178{
1313} 2179}
1314 2180
1315void noinline 2181ecb_noinline
2182void
1316ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1317{ 2184{
1318 W w_ = (W)w; 2185 W w_ = (W)w;
1319 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1320 2187
1321 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1322 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1323 else 2190 else
1324 { 2191 {
1325 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1326 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1327 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1328 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1329 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
1330} 2199}
1331 2200
1332inline_speed void 2201inline_speed void
1333feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1334{ 2203{
1335 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1336 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1337} 2206}
1338 2207
1339inline_size void 2208inline_size void
1340feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1375inline_speed void 2244inline_speed void
1376fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1377{ 2246{
1378 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1379 2248
1380 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1381 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1382} 2251}
1383 2252
1384void 2253void
1385ev_feed_fd_event (EV_P_ int fd, int revents) 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1386{ 2255{
1387 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1388 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1389} 2258}
1390 2259
… …
1393inline_size void 2262inline_size void
1394fd_reify (EV_P) 2263fd_reify (EV_P)
1395{ 2264{
1396 int i; 2265 int i;
1397 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
1398#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1399 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
1400 { 2281 {
1401 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
1402 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
1403 2284
1404 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1418 } 2299 }
1419 } 2300 }
1420 } 2301 }
1421#endif 2302#endif
1422 2303
1423 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
1424 { 2305 {
1425 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
1426 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
1427 ev_io *w; 2308 ev_io *w;
1428 2309
1429 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
1430 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
1431 2312
1432 anfd->reify = 0; 2313 anfd->reify = 0;
1433 2314
1434 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1435 { 2316 {
1436 anfd->events = 0; 2317 anfd->events = 0;
1437 2318
1438 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)
1439 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
1444 2325
1445 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
1446 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
1447 } 2328 }
1448 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
1449 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
1450} 2338}
1451 2339
1452/* something about the given fd changed */ 2340/* something about the given fd changed */
1453inline_size void 2341inline_size
2342void
1454fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
1455{ 2344{
1456 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
1457 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
1458 2347
1459 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
1460 { 2349 {
1461 ++fdchangecnt; 2350 ++fdchangecnt;
1462 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1463 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
1464 } 2353 }
1465} 2354}
1466 2355
1467/* 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 */
1468inline_speed void ecb_cold 2357inline_speed ecb_cold void
1469fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
1470{ 2359{
1471 ev_io *w; 2360 ev_io *w;
1472 2361
1473 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
1476 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);
1477 } 2366 }
1478} 2367}
1479 2368
1480/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
1481inline_size int ecb_cold 2370inline_size ecb_cold int
1482fd_valid (int fd) 2371fd_valid (int fd)
1483{ 2372{
1484#ifdef _WIN32 2373#ifdef _WIN32
1485 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1486#else 2375#else
1487 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
1488#endif 2377#endif
1489} 2378}
1490 2379
1491/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
1492static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
1493fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
1494{ 2384{
1495 int fd; 2385 int fd;
1496 2386
1497 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
1499 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
1500 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
1501} 2391}
1502 2392
1503/* 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 */
1504static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
1505fd_enomem (EV_P) 2396fd_enomem (EV_P)
1506{ 2397{
1507 int fd; 2398 int fd;
1508 2399
1509 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1513 break; 2404 break;
1514 } 2405 }
1515} 2406}
1516 2407
1517/* 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 */
1518static void noinline 2409ecb_noinline
2410static void
1519fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1520{ 2412{
1521 int fd; 2413 int fd;
1522 2414
1523 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
1576 ev_tstamp minat; 2468 ev_tstamp minat;
1577 ANHE *minpos; 2469 ANHE *minpos;
1578 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1579 2471
1580 /* find minimum child */ 2472 /* find minimum child */
1581 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
1582 { 2474 {
1583 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1584 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));
1585 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));
1586 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));
1587 } 2479 }
1588 else if (pos < E) 2480 else if (pos < E)
1589 { 2481 {
1590 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1591 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1592 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1593 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1594 } 2486 }
1595 else 2487 else
1596 break; 2488 break;
1597 2489
1598 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
1606 2498
1607 heap [k] = he; 2499 heap [k] = he;
1608 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
1609} 2501}
1610 2502
1611#else /* 4HEAP */ 2503#else /* not 4HEAP */
1612 2504
1613#define HEAP0 1 2505#define HEAP0 1
1614#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
1615#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
1616 2508
… …
1704 2596
1705/*****************************************************************************/ 2597/*****************************************************************************/
1706 2598
1707#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1708 2600
1709static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
1710evpipe_init (EV_P) 2603evpipe_init (EV_P)
1711{ 2604{
1712 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
1713 { 2606 {
2607 int fds [2];
2608
1714# if EV_USE_EVENTFD 2609# if EV_USE_EVENTFD
2610 fds [0] = -1;
1715 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2611 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1716 if (evfd < 0 && errno == EINVAL) 2612 if (fds [1] < 0 && errno == EINVAL)
1717 evfd = eventfd (0, 0); 2613 fds [1] = eventfd (0, 0);
1718 2614
1719 if (evfd >= 0) 2615 if (fds [1] < 0)
2616# endif
1720 { 2617 {
2618 while (pipe (fds))
2619 ev_syserr ("(libev) error creating signal/async pipe");
2620
2621 fd_intern (fds [0]);
2622 }
2623
1721 evpipe [0] = -1; 2624 evpipe [0] = fds [0];
1722 fd_intern (evfd); /* doing it twice doesn't hurt */ 2625
1723 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));
1724 } 2676 }
1725 else 2677 else
1726# endif 2678#endif
1727 { 2679 {
1728 while (pipe (evpipe)) 2680#ifdef _WIN32
1729 ev_syserr ("(libev) error creating signal/async pipe"); 2681 WSABUF buf;
1730 2682 DWORD sent;
1731 fd_intern (evpipe [0]); 2683 buf.buf = (char *)&buf;
1732 fd_intern (evpipe [1]); 2684 buf.len = 1;
1733 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1734 } 2686#else
1735
1736 ev_io_start (EV_A_ &pipe_w);
1737 ev_unref (EV_A); /* watcher should not keep loop alive */
1738 }
1739}
1740
1741inline_speed void
1742evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1743{
1744 if (expect_true (*flag))
1745 return;
1746
1747 *flag = 1;
1748
1749 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1750
1751 pipe_write_skipped = 1;
1752
1753 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1754
1755 if (pipe_write_wanted)
1756 {
1757 int old_errno;
1758
1759 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1760
1761 old_errno = errno; /* save errno because write will clobber it */
1762
1763#if EV_USE_EVENTFD
1764 if (evfd >= 0)
1765 {
1766 uint64_t counter = 1;
1767 write (evfd, &counter, sizeof (uint64_t));
1768 }
1769 else
1770#endif
1771 {
1772 /* win32 people keep sending patches that change this write() to send() */
1773 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1774 /* so when you think this write should be a send instead, please find out */
1775 /* where your send() is from - it's definitely not the microsoft send, and */
1776 /* tell me. thank you. */
1777 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2688#endif
1778 } 2689 }
1779 2690
1780 errno = old_errno; 2691 errno = old_errno;
1781 } 2692 }
1782} 2693}
… …
1789 int i; 2700 int i;
1790 2701
1791 if (revents & EV_READ) 2702 if (revents & EV_READ)
1792 { 2703 {
1793#if EV_USE_EVENTFD 2704#if EV_USE_EVENTFD
1794 if (evfd >= 0) 2705 if (evpipe [0] < 0)
1795 { 2706 {
1796 uint64_t counter; 2707 uint64_t counter;
1797 read (evfd, &counter, sizeof (uint64_t)); 2708 read (evpipe [1], &counter, sizeof (uint64_t));
1798 } 2709 }
1799 else 2710 else
1800#endif 2711#endif
1801 { 2712 {
1802 char dummy; 2713 char dummy[4];
1803 /* 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
1804 read (evpipe [0], &dummy, 1); 2722 read (evpipe [0], &dummy, sizeof (dummy));
2723#endif
1805 } 2724 }
1806 } 2725 }
1807 2726
1808 pipe_write_skipped = 0; 2727 pipe_write_skipped = 0;
2728
2729 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1809 2730
1810#if EV_SIGNAL_ENABLE 2731#if EV_SIGNAL_ENABLE
1811 if (sig_pending) 2732 if (sig_pending)
1812 { 2733 {
1813 sig_pending = 0; 2734 sig_pending = 0;
1814 2735
2736 ECB_MEMORY_FENCE;
2737
1815 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
1816 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
1817 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
1818 } 2741 }
1819#endif 2742#endif
1820 2743
1821#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1822 if (async_pending) 2745 if (async_pending)
1823 { 2746 {
1824 async_pending = 0; 2747 async_pending = 0;
2748
2749 ECB_MEMORY_FENCE;
1825 2750
1826 for (i = asynccnt; i--; ) 2751 for (i = asynccnt; i--; )
1827 if (asyncs [i]->sent) 2752 if (asyncs [i]->sent)
1828 { 2753 {
1829 asyncs [i]->sent = 0; 2754 asyncs [i]->sent = 0;
2755 ECB_MEMORY_FENCE_RELEASE;
1830 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2756 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1831 } 2757 }
1832 } 2758 }
1833#endif 2759#endif
1834} 2760}
1835 2761
1836/*****************************************************************************/ 2762/*****************************************************************************/
1837 2763
1838void 2764void
1839ev_feed_signal (int signum) 2765ev_feed_signal (int signum) EV_NOEXCEPT
1840{ 2766{
1841#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2768 EV_P;
2769 ECB_MEMORY_FENCE_ACQUIRE;
1842 EV_P = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
1843 2771
1844 if (!EV_A) 2772 if (!EV_A)
1845 return; 2773 return;
1846#endif 2774#endif
1847 2775
1848 if (!ev_active (&pipe_w))
1849 return;
1850
1851 signals [signum - 1].pending = 1; 2776 signals [signum - 1].pending = 1;
1852 evpipe_write (EV_A_ &sig_pending); 2777 evpipe_write (EV_A_ &sig_pending);
1853} 2778}
1854 2779
1855static void 2780static void
… …
1860#endif 2785#endif
1861 2786
1862 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
1863} 2788}
1864 2789
1865void noinline 2790ecb_noinline
2791void
1866ev_feed_signal_event (EV_P_ int signum) 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1867{ 2793{
1868 WL w; 2794 WL w;
1869 2795
1870 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1871 return; 2797 return;
1872 2798
1873 --signum; 2799 --signum;
1874 2800
1875#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
1876 /* 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 */
1877 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
1878 2804
1879 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
1880 return; 2806 return;
1881#endif 2807#endif
1882 2808
1883 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2810 ECB_MEMORY_FENCE_RELEASE;
1884 2811
1885 for (w = signals [signum].head; w; w = w->next) 2812 for (w = signals [signum].head; w; w = w->next)
1886 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1887} 2814}
1888 2815
… …
1967 2894
1968#endif 2895#endif
1969 2896
1970/*****************************************************************************/ 2897/*****************************************************************************/
1971 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
1972#if EV_USE_IOCP 2951#if EV_USE_IOCP
1973# include "ev_iocp.c" 2952# include "ev_iocp.c"
1974#endif 2953#endif
1975#if EV_USE_PORT 2954#if EV_USE_PORT
1976# include "ev_port.c" 2955# include "ev_port.c"
… …
1979# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
1980#endif 2959#endif
1981#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
1982# include "ev_epoll.c" 2961# include "ev_epoll.c"
1983#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
1984#if EV_USE_POLL 2969#if EV_USE_POLL
1985# include "ev_poll.c" 2970# include "ev_poll.c"
1986#endif 2971#endif
1987#if EV_USE_SELECT 2972#if EV_USE_SELECT
1988# include "ev_select.c" 2973# include "ev_select.c"
1989#endif 2974#endif
1990 2975
1991int ecb_cold 2976ecb_cold int
1992ev_version_major (void) 2977ev_version_major (void) EV_NOEXCEPT
1993{ 2978{
1994 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
1995} 2980}
1996 2981
1997int ecb_cold 2982ecb_cold int
1998ev_version_minor (void) 2983ev_version_minor (void) EV_NOEXCEPT
1999{ 2984{
2000 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2001} 2986}
2002 2987
2003/* 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 */
2004int inline_size ecb_cold 2989inline_size ecb_cold int
2005enable_secure (void) 2990enable_secure (void)
2006{ 2991{
2007#ifdef _WIN32 2992#ifdef _WIN32
2008 return 0; 2993 return 0;
2009#else 2994#else
2010 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2011 || getgid () != getegid (); 2996 || getgid () != getegid ();
2012#endif 2997#endif
2013} 2998}
2014 2999
2015unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2016ev_supported_backends (void) 3002ev_supported_backends (void) EV_NOEXCEPT
2017{ 3003{
2018 unsigned int flags = 0; 3004 unsigned int flags = 0;
2019 3005
2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2021 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2022 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
3009 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
3010 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2023 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2024 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2025 3013
2026 return flags; 3014 return flags;
2027} 3015}
2028 3016
2029unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2030ev_recommended_backends (void) 3019ev_recommended_backends (void) EV_NOEXCEPT
2031{ 3020{
2032 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2033 3022
2034#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2035 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2043#endif 3032#endif
2044#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2045 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) */
2046#endif 3035#endif
2047 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
2048 return flags; 3046 return flags;
2049} 3047}
2050 3048
2051unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2052ev_embeddable_backends (void) 3051ev_embeddable_backends (void) EV_NOEXCEPT
2053{ 3052{
2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2055 3054
2056 /* 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 */
2057 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 */
2058 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2059 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
3061 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3062 * because our backend_fd is the epoll fd we need as fallback.
3063 * if the kernel ever is fixed, this might change...
3064 */
3065
2060 return flags; 3066 return flags;
2061} 3067}
2062 3068
2063unsigned int 3069unsigned int
2064ev_backend (EV_P) 3070ev_backend (EV_P) EV_NOEXCEPT
2065{ 3071{
2066 return backend; 3072 return backend;
2067} 3073}
2068 3074
2069#if EV_FEATURE_API 3075#if EV_FEATURE_API
2070unsigned int 3076unsigned int
2071ev_iteration (EV_P) 3077ev_iteration (EV_P) EV_NOEXCEPT
2072{ 3078{
2073 return loop_count; 3079 return loop_count;
2074} 3080}
2075 3081
2076unsigned int 3082unsigned int
2077ev_depth (EV_P) 3083ev_depth (EV_P) EV_NOEXCEPT
2078{ 3084{
2079 return loop_depth; 3085 return loop_depth;
2080} 3086}
2081 3087
2082void 3088void
2083ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3089ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2084{ 3090{
2085 io_blocktime = interval; 3091 io_blocktime = interval;
2086} 3092}
2087 3093
2088void 3094void
2089ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3095ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2090{ 3096{
2091 timeout_blocktime = interval; 3097 timeout_blocktime = interval;
2092} 3098}
2093 3099
2094void 3100void
2095ev_set_userdata (EV_P_ void *data) 3101ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2096{ 3102{
2097 userdata = data; 3103 userdata = data;
2098} 3104}
2099 3105
2100void * 3106void *
2101ev_userdata (EV_P) 3107ev_userdata (EV_P) EV_NOEXCEPT
2102{ 3108{
2103 return userdata; 3109 return userdata;
2104} 3110}
2105 3111
2106void 3112void
2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3113ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2108{ 3114{
2109 invoke_cb = invoke_pending_cb; 3115 invoke_cb = invoke_pending_cb;
2110} 3116}
2111 3117
2112void 3118void
2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3119ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2114{ 3120{
2115 release_cb = release; 3121 release_cb = release;
2116 acquire_cb = acquire; 3122 acquire_cb = acquire;
2117} 3123}
2118#endif 3124#endif
2119 3125
2120/* initialise a loop structure, must be zero-initialised */ 3126/* initialise a loop structure, must be zero-initialised */
2121static void noinline ecb_cold 3127ecb_noinline ecb_cold
3128static void
2122loop_init (EV_P_ unsigned int flags) 3129loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2123{ 3130{
2124 if (!backend) 3131 if (!backend)
2125 { 3132 {
2126 origflags = flags; 3133 origflags = flags;
2127 3134
… …
2172#if EV_ASYNC_ENABLE 3179#if EV_ASYNC_ENABLE
2173 async_pending = 0; 3180 async_pending = 0;
2174#endif 3181#endif
2175 pipe_write_skipped = 0; 3182 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0; 3183 pipe_write_wanted = 0;
3184 evpipe [0] = -1;
3185 evpipe [1] = -1;
2177#if EV_USE_INOTIFY 3186#if EV_USE_INOTIFY
2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3187 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2179#endif 3188#endif
2180#if EV_USE_SIGNALFD 3189#if EV_USE_SIGNALFD
2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3190 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2182#endif 3191#endif
3192#if EV_USE_TIMERFD
3193 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3194#endif
2183 3195
2184 if (!(flags & EVBACKEND_MASK)) 3196 if (!(flags & EVBACKEND_MASK))
2185 flags |= ev_recommended_backends (); 3197 flags |= ev_recommended_backends ();
2186 3198
2187#if EV_USE_IOCP 3199#if EV_USE_IOCP
2188 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3200 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2189#endif 3201#endif
2190#if EV_USE_PORT 3202#if EV_USE_PORT
2191 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3203 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2192#endif 3204#endif
2193#if EV_USE_KQUEUE 3205#if EV_USE_KQUEUE
2194 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3206 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3207#endif
3208#if EV_USE_IOURING
3209 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3210#endif
3211#if EV_USE_LINUXAIO
3212 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2195#endif 3213#endif
2196#if EV_USE_EPOLL 3214#if EV_USE_EPOLL
2197 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2198#endif 3216#endif
2199#if EV_USE_POLL 3217#if EV_USE_POLL
2200 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2201#endif 3219#endif
2202#if EV_USE_SELECT 3220#if EV_USE_SELECT
2203 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3221 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2204#endif 3222#endif
2205 3223
2206 ev_prepare_init (&pending_w, pendingcb); 3224 ev_prepare_init (&pending_w, pendingcb);
2207 3225
2208#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2211#endif 3229#endif
2212 } 3230 }
2213} 3231}
2214 3232
2215/* free up a loop structure */ 3233/* free up a loop structure */
2216void ecb_cold 3234ecb_cold
3235void
2217ev_loop_destroy (EV_P) 3236ev_loop_destroy (EV_P)
2218{ 3237{
2219 int i; 3238 int i;
2220 3239
2221#if EV_MULTIPLICITY 3240#if EV_MULTIPLICITY
… …
2224 return; 3243 return;
2225#endif 3244#endif
2226 3245
2227#if EV_CLEANUP_ENABLE 3246#if EV_CLEANUP_ENABLE
2228 /* queue cleanup watchers (and execute them) */ 3247 /* queue cleanup watchers (and execute them) */
2229 if (expect_false (cleanupcnt)) 3248 if (ecb_expect_false (cleanupcnt))
2230 { 3249 {
2231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3250 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2232 EV_INVOKE_PENDING; 3251 EV_INVOKE_PENDING;
2233 } 3252 }
2234#endif 3253#endif
2235 3254
2236#if EV_CHILD_ENABLE 3255#if EV_CHILD_ENABLE
2237 if (ev_is_active (&childev)) 3256 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2238 { 3257 {
2239 ev_ref (EV_A); /* child watcher */ 3258 ev_ref (EV_A); /* child watcher */
2240 ev_signal_stop (EV_A_ &childev); 3259 ev_signal_stop (EV_A_ &childev);
2241 } 3260 }
2242#endif 3261#endif
… …
2244 if (ev_is_active (&pipe_w)) 3263 if (ev_is_active (&pipe_w))
2245 { 3264 {
2246 /*ev_ref (EV_A);*/ 3265 /*ev_ref (EV_A);*/
2247 /*ev_io_stop (EV_A_ &pipe_w);*/ 3266 /*ev_io_stop (EV_A_ &pipe_w);*/
2248 3267
2249#if EV_USE_EVENTFD
2250 if (evfd >= 0)
2251 close (evfd);
2252#endif
2253
2254 if (evpipe [0] >= 0)
2255 {
2256 EV_WIN32_CLOSE_FD (evpipe [0]); 3268 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2257 EV_WIN32_CLOSE_FD (evpipe [1]); 3269 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2258 }
2259 } 3270 }
2260 3271
2261#if EV_USE_SIGNALFD 3272#if EV_USE_SIGNALFD
2262 if (ev_is_active (&sigfd_w)) 3273 if (ev_is_active (&sigfd_w))
2263 close (sigfd); 3274 close (sigfd);
2264#endif 3275#endif
2265 3276
3277#if EV_USE_TIMERFD
3278 if (ev_is_active (&timerfd_w))
3279 close (timerfd);
3280#endif
3281
2266#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2267 if (fs_fd >= 0) 3283 if (fs_fd >= 0)
2268 close (fs_fd); 3284 close (fs_fd);
2269#endif 3285#endif
2270 3286
2271 if (backend_fd >= 0) 3287 if (backend_fd >= 0)
2272 close (backend_fd); 3288 close (backend_fd);
2273 3289
2274#if EV_USE_IOCP 3290#if EV_USE_IOCP
2275 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3291 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2276#endif 3292#endif
2277#if EV_USE_PORT 3293#if EV_USE_PORT
2278 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3294 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2279#endif 3295#endif
2280#if EV_USE_KQUEUE 3296#if EV_USE_KQUEUE
2281 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3297 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3298#endif
3299#if EV_USE_IOURING
3300 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3301#endif
3302#if EV_USE_LINUXAIO
3303 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2282#endif 3304#endif
2283#if EV_USE_EPOLL 3305#if EV_USE_EPOLL
2284 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3306 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2285#endif 3307#endif
2286#if EV_USE_POLL 3308#if EV_USE_POLL
2287 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3309 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2288#endif 3310#endif
2289#if EV_USE_SELECT 3311#if EV_USE_SELECT
2290 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3312 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2291#endif 3313#endif
2292 3314
2293 for (i = NUMPRI; i--; ) 3315 for (i = NUMPRI; i--; )
2294 { 3316 {
2295 array_free (pending, [i]); 3317 array_free (pending, [i]);
… …
2337 3359
2338inline_size void 3360inline_size void
2339loop_fork (EV_P) 3361loop_fork (EV_P)
2340{ 3362{
2341#if EV_USE_PORT 3363#if EV_USE_PORT
2342 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3364 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2343#endif 3365#endif
2344#if EV_USE_KQUEUE 3366#if EV_USE_KQUEUE
2345 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3367 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3368#endif
3369#if EV_USE_IOURING
3370 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3371#endif
3372#if EV_USE_LINUXAIO
3373 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2346#endif 3374#endif
2347#if EV_USE_EPOLL 3375#if EV_USE_EPOLL
2348 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3376 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2349#endif 3377#endif
2350#if EV_USE_INOTIFY 3378#if EV_USE_INOTIFY
2351 infy_fork (EV_A); 3379 infy_fork (EV_A);
2352#endif 3380#endif
2353 3381
3382 if (postfork != 2)
3383 {
3384 #if EV_USE_SIGNALFD
3385 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3386 #endif
3387
3388 #if EV_USE_TIMERFD
3389 if (ev_is_active (&timerfd_w))
3390 {
3391 ev_ref (EV_A);
3392 ev_io_stop (EV_A_ &timerfd_w);
3393
3394 close (timerfd);
3395 timerfd = -2;
3396
3397 evtimerfd_init (EV_A);
3398 /* reschedule periodics, in case we missed something */
3399 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3400 }
3401 #endif
3402
3403 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2354 if (ev_is_active (&pipe_w)) 3404 if (ev_is_active (&pipe_w))
2355 { 3405 {
2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3406 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2357 3407
2358 ev_ref (EV_A); 3408 ev_ref (EV_A);
2359 ev_io_stop (EV_A_ &pipe_w); 3409 ev_io_stop (EV_A_ &pipe_w);
2360 3410
2361#if EV_USE_EVENTFD
2362 if (evfd >= 0)
2363 close (evfd);
2364#endif
2365
2366 if (evpipe [0] >= 0) 3411 if (evpipe [0] >= 0)
2367 {
2368 EV_WIN32_CLOSE_FD (evpipe [0]); 3412 EV_WIN32_CLOSE_FD (evpipe [0]);
2369 EV_WIN32_CLOSE_FD (evpipe [1]); 3413
3414 evpipe_init (EV_A);
3415 /* iterate over everything, in case we missed something before */
3416 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2370 } 3417 }
2371 3418 #endif
2372#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2373 evpipe_init (EV_A);
2374 /* now iterate over everything, in case we missed something */
2375 pipecb (EV_A_ &pipe_w, EV_READ);
2376#endif
2377 } 3419 }
2378 3420
2379 postfork = 0; 3421 postfork = 0;
2380} 3422}
2381 3423
2382#if EV_MULTIPLICITY 3424#if EV_MULTIPLICITY
2383 3425
3426ecb_cold
2384struct ev_loop * ecb_cold 3427struct ev_loop *
2385ev_loop_new (unsigned int flags) 3428ev_loop_new (unsigned int flags) EV_NOEXCEPT
2386{ 3429{
2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2388 3431
2389 memset (EV_A, 0, sizeof (struct ev_loop)); 3432 memset (EV_A, 0, sizeof (struct ev_loop));
2390 loop_init (EV_A_ flags); 3433 loop_init (EV_A_ flags);
… …
2397} 3440}
2398 3441
2399#endif /* multiplicity */ 3442#endif /* multiplicity */
2400 3443
2401#if EV_VERIFY 3444#if EV_VERIFY
2402static void noinline ecb_cold 3445ecb_noinline ecb_cold
3446static void
2403verify_watcher (EV_P_ W w) 3447verify_watcher (EV_P_ W w)
2404{ 3448{
2405 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3449 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2406 3450
2407 if (w->pending) 3451 if (w->pending)
2408 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3452 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2409} 3453}
2410 3454
2411static void noinline ecb_cold 3455ecb_noinline ecb_cold
3456static void
2412verify_heap (EV_P_ ANHE *heap, int N) 3457verify_heap (EV_P_ ANHE *heap, int N)
2413{ 3458{
2414 int i; 3459 int i;
2415 3460
2416 for (i = HEAP0; i < N + HEAP0; ++i) 3461 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2421 3466
2422 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2423 } 3468 }
2424} 3469}
2425 3470
2426static void noinline ecb_cold 3471ecb_noinline ecb_cold
3472static void
2427array_verify (EV_P_ W *ws, int cnt) 3473array_verify (EV_P_ W *ws, int cnt)
2428{ 3474{
2429 while (cnt--) 3475 while (cnt--)
2430 { 3476 {
2431 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3477 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2434} 3480}
2435#endif 3481#endif
2436 3482
2437#if EV_FEATURE_API 3483#if EV_FEATURE_API
2438void ecb_cold 3484void ecb_cold
2439ev_verify (EV_P) 3485ev_verify (EV_P) EV_NOEXCEPT
2440{ 3486{
2441#if EV_VERIFY 3487#if EV_VERIFY
2442 int i; 3488 int i;
2443 WL w; 3489 WL w, w2;
2444 3490
2445 assert (activecnt >= -1); 3491 assert (activecnt >= -1);
2446 3492
2447 assert (fdchangemax >= fdchangecnt); 3493 assert (fdchangemax >= fdchangecnt);
2448 for (i = 0; i < fdchangecnt; ++i) 3494 for (i = 0; i < fdchangecnt; ++i)
2449 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3495 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2450 3496
2451 assert (anfdmax >= 0); 3497 assert (anfdmax >= 0);
2452 for (i = 0; i < anfdmax; ++i) 3498 for (i = 0; i < anfdmax; ++i)
3499 {
3500 int j = 0;
3501
2453 for (w = anfds [i].head; w; w = w->next) 3502 for (w = w2 = anfds [i].head; w; w = w->next)
2454 { 3503 {
2455 verify_watcher (EV_A_ (W)w); 3504 verify_watcher (EV_A_ (W)w);
3505
3506 if (j++ & 1)
3507 {
3508 assert (("libev: io watcher list contains a loop", w != w2));
3509 w2 = w2->next;
3510 }
3511
2456 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3512 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2457 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3513 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2458 } 3514 }
3515 }
2459 3516
2460 assert (timermax >= timercnt); 3517 assert (timermax >= timercnt);
2461 verify_heap (EV_A_ timers, timercnt); 3518 verify_heap (EV_A_ timers, timercnt);
2462 3519
2463#if EV_PERIODIC_ENABLE 3520#if EV_PERIODIC_ENABLE
… …
2509#endif 3566#endif
2510} 3567}
2511#endif 3568#endif
2512 3569
2513#if EV_MULTIPLICITY 3570#if EV_MULTIPLICITY
3571ecb_cold
2514struct ev_loop * ecb_cold 3572struct ev_loop *
2515#else 3573#else
2516int 3574int
2517#endif 3575#endif
2518ev_default_loop (unsigned int flags) 3576ev_default_loop (unsigned int flags) EV_NOEXCEPT
2519{ 3577{
2520 if (!ev_default_loop_ptr) 3578 if (!ev_default_loop_ptr)
2521 { 3579 {
2522#if EV_MULTIPLICITY 3580#if EV_MULTIPLICITY
2523 EV_P = ev_default_loop_ptr = &default_loop_struct; 3581 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2542 3600
2543 return ev_default_loop_ptr; 3601 return ev_default_loop_ptr;
2544} 3602}
2545 3603
2546void 3604void
2547ev_loop_fork (EV_P) 3605ev_loop_fork (EV_P) EV_NOEXCEPT
2548{ 3606{
2549 postfork = 1; /* must be in line with ev_default_fork */ 3607 postfork = 1;
2550} 3608}
2551 3609
2552/*****************************************************************************/ 3610/*****************************************************************************/
2553 3611
2554void 3612void
… …
2556{ 3614{
2557 EV_CB_INVOKE ((W)w, revents); 3615 EV_CB_INVOKE ((W)w, revents);
2558} 3616}
2559 3617
2560unsigned int 3618unsigned int
2561ev_pending_count (EV_P) 3619ev_pending_count (EV_P) EV_NOEXCEPT
2562{ 3620{
2563 int pri; 3621 int pri;
2564 unsigned int count = 0; 3622 unsigned int count = 0;
2565 3623
2566 for (pri = NUMPRI; pri--; ) 3624 for (pri = NUMPRI; pri--; )
2567 count += pendingcnt [pri]; 3625 count += pendingcnt [pri];
2568 3626
2569 return count; 3627 return count;
2570} 3628}
2571 3629
2572void noinline 3630ecb_noinline
3631void
2573ev_invoke_pending (EV_P) 3632ev_invoke_pending (EV_P)
2574{ 3633{
2575 int pri; 3634 pendingpri = NUMPRI;
2576 3635
2577 for (pri = NUMPRI; pri--; ) 3636 do
3637 {
3638 --pendingpri;
3639
3640 /* pendingpri possibly gets modified in the inner loop */
2578 while (pendingcnt [pri]) 3641 while (pendingcnt [pendingpri])
2579 { 3642 {
2580 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3643 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2581 3644
2582 p->w->pending = 0; 3645 p->w->pending = 0;
2583 EV_CB_INVOKE (p->w, p->events); 3646 EV_CB_INVOKE (p->w, p->events);
2584 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
2585 } 3648 }
3649 }
3650 while (pendingpri);
2586} 3651}
2587 3652
2588#if EV_IDLE_ENABLE 3653#if EV_IDLE_ENABLE
2589/* make idle watchers pending. this handles the "call-idle */ 3654/* make idle watchers pending. this handles the "call-idle */
2590/* only when higher priorities are idle" logic */ 3655/* only when higher priorities are idle" logic */
2591inline_size void 3656inline_size void
2592idle_reify (EV_P) 3657idle_reify (EV_P)
2593{ 3658{
2594 if (expect_false (idleall)) 3659 if (ecb_expect_false (idleall))
2595 { 3660 {
2596 int pri; 3661 int pri;
2597 3662
2598 for (pri = NUMPRI; pri--; ) 3663 for (pri = NUMPRI; pri--; )
2599 { 3664 {
… …
2629 { 3694 {
2630 ev_at (w) += w->repeat; 3695 ev_at (w) += w->repeat;
2631 if (ev_at (w) < mn_now) 3696 if (ev_at (w) < mn_now)
2632 ev_at (w) = mn_now; 3697 ev_at (w) = mn_now;
2633 3698
2634 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3699 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2635 3700
2636 ANHE_at_cache (timers [HEAP0]); 3701 ANHE_at_cache (timers [HEAP0]);
2637 downheap (timers, timercnt, HEAP0); 3702 downheap (timers, timercnt, HEAP0);
2638 } 3703 }
2639 else 3704 else
… …
2648 } 3713 }
2649} 3714}
2650 3715
2651#if EV_PERIODIC_ENABLE 3716#if EV_PERIODIC_ENABLE
2652 3717
2653static void noinline 3718ecb_noinline
3719static void
2654periodic_recalc (EV_P_ ev_periodic *w) 3720periodic_recalc (EV_P_ ev_periodic *w)
2655{ 3721{
2656 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3722 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2657 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3723 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2658 3724
… …
2660 while (at <= ev_rt_now) 3726 while (at <= ev_rt_now)
2661 { 3727 {
2662 ev_tstamp nat = at + w->interval; 3728 ev_tstamp nat = at + w->interval;
2663 3729
2664 /* when resolution fails us, we use ev_rt_now */ 3730 /* when resolution fails us, we use ev_rt_now */
2665 if (expect_false (nat == at)) 3731 if (ecb_expect_false (nat == at))
2666 { 3732 {
2667 at = ev_rt_now; 3733 at = ev_rt_now;
2668 break; 3734 break;
2669 } 3735 }
2670 3736
… …
2680{ 3746{
2681 EV_FREQUENT_CHECK; 3747 EV_FREQUENT_CHECK;
2682 3748
2683 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3749 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2684 { 3750 {
2685 int feed_count = 0;
2686
2687 do 3751 do
2688 { 3752 {
2689 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3753 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2690 3754
2691 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3755 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2718 } 3782 }
2719} 3783}
2720 3784
2721/* simply recalculate all periodics */ 3785/* simply recalculate all periodics */
2722/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3786/* TODO: maybe ensure that at least one event happens when jumping forward? */
2723static void noinline ecb_cold 3787ecb_noinline ecb_cold
3788static void
2724periodics_reschedule (EV_P) 3789periodics_reschedule (EV_P)
2725{ 3790{
2726 int i; 3791 int i;
2727 3792
2728 /* adjust periodics after time jump */ 3793 /* adjust periodics after time jump */
… …
2741 reheap (periodics, periodiccnt); 3806 reheap (periodics, periodiccnt);
2742} 3807}
2743#endif 3808#endif
2744 3809
2745/* adjust all timers by a given offset */ 3810/* adjust all timers by a given offset */
2746static void noinline ecb_cold 3811ecb_noinline ecb_cold
3812static void
2747timers_reschedule (EV_P_ ev_tstamp adjust) 3813timers_reschedule (EV_P_ ev_tstamp adjust)
2748{ 3814{
2749 int i; 3815 int i;
2750 3816
2751 for (i = 0; i < timercnt; ++i) 3817 for (i = 0; i < timercnt; ++i)
… …
2760/* also detect if there was a timejump, and act accordingly */ 3826/* also detect if there was a timejump, and act accordingly */
2761inline_speed void 3827inline_speed void
2762time_update (EV_P_ ev_tstamp max_block) 3828time_update (EV_P_ ev_tstamp max_block)
2763{ 3829{
2764#if EV_USE_MONOTONIC 3830#if EV_USE_MONOTONIC
2765 if (expect_true (have_monotonic)) 3831 if (ecb_expect_true (have_monotonic))
2766 { 3832 {
2767 int i; 3833 int i;
2768 ev_tstamp odiff = rtmn_diff; 3834 ev_tstamp odiff = rtmn_diff;
2769 3835
2770 mn_now = get_clock (); 3836 mn_now = get_clock ();
2771 3837
2772 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2773 /* interpolate in the meantime */ 3839 /* interpolate in the meantime */
2774 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3840 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2775 { 3841 {
2776 ev_rt_now = rtmn_diff + mn_now; 3842 ev_rt_now = rtmn_diff + mn_now;
2777 return; 3843 return;
2778 } 3844 }
2779 3845
… …
2793 ev_tstamp diff; 3859 ev_tstamp diff;
2794 rtmn_diff = ev_rt_now - mn_now; 3860 rtmn_diff = ev_rt_now - mn_now;
2795 3861
2796 diff = odiff - rtmn_diff; 3862 diff = odiff - rtmn_diff;
2797 3863
2798 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3864 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2799 return; /* all is well */ 3865 return; /* all is well */
2800 3866
2801 ev_rt_now = ev_time (); 3867 ev_rt_now = ev_time ();
2802 mn_now = get_clock (); 3868 mn_now = get_clock ();
2803 now_floor = mn_now; 3869 now_floor = mn_now;
… …
2812 else 3878 else
2813#endif 3879#endif
2814 { 3880 {
2815 ev_rt_now = ev_time (); 3881 ev_rt_now = ev_time ();
2816 3882
2817 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3883 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2818 { 3884 {
2819 /* adjust timers. this is easy, as the offset is the same for all of them */ 3885 /* adjust timers. this is easy, as the offset is the same for all of them */
2820 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3886 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2821#if EV_PERIODIC_ENABLE 3887#if EV_PERIODIC_ENABLE
2822 periodics_reschedule (EV_A); 3888 periodics_reschedule (EV_A);
… …
2825 3891
2826 mn_now = ev_rt_now; 3892 mn_now = ev_rt_now;
2827 } 3893 }
2828} 3894}
2829 3895
2830void 3896int
2831ev_run (EV_P_ int flags) 3897ev_run (EV_P_ int flags)
2832{ 3898{
2833#if EV_FEATURE_API 3899#if EV_FEATURE_API
2834 ++loop_depth; 3900 ++loop_depth;
2835#endif 3901#endif
… …
2845#if EV_VERIFY >= 2 3911#if EV_VERIFY >= 2
2846 ev_verify (EV_A); 3912 ev_verify (EV_A);
2847#endif 3913#endif
2848 3914
2849#ifndef _WIN32 3915#ifndef _WIN32
2850 if (expect_false (curpid)) /* penalise the forking check even more */ 3916 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2851 if (expect_false (getpid () != curpid)) 3917 if (ecb_expect_false (getpid () != curpid))
2852 { 3918 {
2853 curpid = getpid (); 3919 curpid = getpid ();
2854 postfork = 1; 3920 postfork = 1;
2855 } 3921 }
2856#endif 3922#endif
2857 3923
2858#if EV_FORK_ENABLE 3924#if EV_FORK_ENABLE
2859 /* we might have forked, so queue fork handlers */ 3925 /* we might have forked, so queue fork handlers */
2860 if (expect_false (postfork)) 3926 if (ecb_expect_false (postfork))
2861 if (forkcnt) 3927 if (forkcnt)
2862 { 3928 {
2863 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3929 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2864 EV_INVOKE_PENDING; 3930 EV_INVOKE_PENDING;
2865 } 3931 }
2866#endif 3932#endif
2867 3933
2868#if EV_PREPARE_ENABLE 3934#if EV_PREPARE_ENABLE
2869 /* queue prepare watchers (and execute them) */ 3935 /* queue prepare watchers (and execute them) */
2870 if (expect_false (preparecnt)) 3936 if (ecb_expect_false (preparecnt))
2871 { 3937 {
2872 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2873 EV_INVOKE_PENDING; 3939 EV_INVOKE_PENDING;
2874 } 3940 }
2875#endif 3941#endif
2876 3942
2877 if (expect_false (loop_done)) 3943 if (ecb_expect_false (loop_done))
2878 break; 3944 break;
2879 3945
2880 /* we might have forked, so reify kernel state if necessary */ 3946 /* we might have forked, so reify kernel state if necessary */
2881 if (expect_false (postfork)) 3947 if (ecb_expect_false (postfork))
2882 loop_fork (EV_A); 3948 loop_fork (EV_A);
2883 3949
2884 /* update fd-related kernel structures */ 3950 /* update fd-related kernel structures */
2885 fd_reify (EV_A); 3951 fd_reify (EV_A);
2886 3952
… …
2891 3957
2892 /* remember old timestamp for io_blocktime calculation */ 3958 /* remember old timestamp for io_blocktime calculation */
2893 ev_tstamp prev_mn_now = mn_now; 3959 ev_tstamp prev_mn_now = mn_now;
2894 3960
2895 /* update time to cancel out callback processing overhead */ 3961 /* update time to cancel out callback processing overhead */
2896 time_update (EV_A_ 1e100); 3962 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2897 3963
2898 /* from now on, we want a pipe-wake-up */ 3964 /* from now on, we want a pipe-wake-up */
2899 pipe_write_wanted = 1; 3965 pipe_write_wanted = 1;
2900 3966
2901 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3967 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2902 3968
2903 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3969 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2904 { 3970 {
2905 waittime = MAX_BLOCKTIME; 3971 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2906 3972
2907 if (timercnt) 3973 if (timercnt)
2908 { 3974 {
2909 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2910 if (waittime > to) waittime = to; 3976 if (waittime > to) waittime = to;
… …
2917 if (waittime > to) waittime = to; 3983 if (waittime > to) waittime = to;
2918 } 3984 }
2919#endif 3985#endif
2920 3986
2921 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3987 /* don't let timeouts decrease the waittime below timeout_blocktime */
2922 if (expect_false (waittime < timeout_blocktime)) 3988 if (ecb_expect_false (waittime < timeout_blocktime))
2923 waittime = timeout_blocktime; 3989 waittime = timeout_blocktime;
2924 3990
2925 /* at this point, we NEED to wait, so we have to ensure */ 3991 /* now there are two more special cases left, either we have
2926 /* to pass a minimum nonzero value to the backend */ 3992 * already-expired timers, so we should not sleep, or we have timers
3993 * that expire very soon, in which case we need to wait for a minimum
3994 * amount of time for some event loop backends.
3995 */
2927 if (expect_false (waittime < backend_mintime)) 3996 if (ecb_expect_false (waittime < backend_mintime))
3997 waittime = waittime <= EV_TS_CONST (0.)
3998 ? EV_TS_CONST (0.)
2928 waittime = backend_mintime; 3999 : backend_mintime;
2929 4000
2930 /* extra check because io_blocktime is commonly 0 */ 4001 /* extra check because io_blocktime is commonly 0 */
2931 if (expect_false (io_blocktime)) 4002 if (ecb_expect_false (io_blocktime))
2932 { 4003 {
2933 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4004 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2934 4005
2935 if (sleeptime > waittime - backend_mintime) 4006 if (sleeptime > waittime - backend_mintime)
2936 sleeptime = waittime - backend_mintime; 4007 sleeptime = waittime - backend_mintime;
2937 4008
2938 if (expect_true (sleeptime > 0.)) 4009 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2939 { 4010 {
2940 ev_sleep (sleeptime); 4011 ev_sleep (sleeptime);
2941 waittime -= sleeptime; 4012 waittime -= sleeptime;
2942 } 4013 }
2943 } 4014 }
… …
2948#endif 4019#endif
2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 4020 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2950 backend_poll (EV_A_ waittime); 4021 backend_poll (EV_A_ waittime);
2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4022 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952 4023
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 4024 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2954 4025
4026 ECB_MEMORY_FENCE_ACQUIRE;
2955 if (pipe_write_skipped) 4027 if (pipe_write_skipped)
2956 { 4028 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4029 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4030 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 } 4031 }
2960 4032
2961
2962 /* update ev_rt_now, do magic */ 4033 /* update ev_rt_now, do magic */
2963 time_update (EV_A_ waittime + sleeptime); 4034 time_update (EV_A_ waittime + sleeptime);
2964 } 4035 }
2965 4036
2966 /* queue pending timers and reschedule them */ 4037 /* queue pending timers and reschedule them */
… …
2974 idle_reify (EV_A); 4045 idle_reify (EV_A);
2975#endif 4046#endif
2976 4047
2977#if EV_CHECK_ENABLE 4048#if EV_CHECK_ENABLE
2978 /* queue check watchers, to be executed first */ 4049 /* queue check watchers, to be executed first */
2979 if (expect_false (checkcnt)) 4050 if (ecb_expect_false (checkcnt))
2980 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4051 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2981#endif 4052#endif
2982 4053
2983 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
2984 } 4055 }
2985 while (expect_true ( 4056 while (ecb_expect_true (
2986 activecnt 4057 activecnt
2987 && !loop_done 4058 && !loop_done
2988 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4059 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2989 )); 4060 ));
2990 4061
… …
2992 loop_done = EVBREAK_CANCEL; 4063 loop_done = EVBREAK_CANCEL;
2993 4064
2994#if EV_FEATURE_API 4065#if EV_FEATURE_API
2995 --loop_depth; 4066 --loop_depth;
2996#endif 4067#endif
2997}
2998 4068
4069 return activecnt;
4070}
4071
2999void 4072void
3000ev_break (EV_P_ int how) 4073ev_break (EV_P_ int how) EV_NOEXCEPT
3001{ 4074{
3002 loop_done = how; 4075 loop_done = how;
3003} 4076}
3004 4077
3005void 4078void
3006ev_ref (EV_P) 4079ev_ref (EV_P) EV_NOEXCEPT
3007{ 4080{
3008 ++activecnt; 4081 ++activecnt;
3009} 4082}
3010 4083
3011void 4084void
3012ev_unref (EV_P) 4085ev_unref (EV_P) EV_NOEXCEPT
3013{ 4086{
3014 --activecnt; 4087 --activecnt;
3015} 4088}
3016 4089
3017void 4090void
3018ev_now_update (EV_P) 4091ev_now_update (EV_P) EV_NOEXCEPT
3019{ 4092{
3020 time_update (EV_A_ 1e100); 4093 time_update (EV_A_ EV_TSTAMP_HUGE);
3021} 4094}
3022 4095
3023void 4096void
3024ev_suspend (EV_P) 4097ev_suspend (EV_P) EV_NOEXCEPT
3025{ 4098{
3026 ev_now_update (EV_A); 4099 ev_now_update (EV_A);
3027} 4100}
3028 4101
3029void 4102void
3030ev_resume (EV_P) 4103ev_resume (EV_P) EV_NOEXCEPT
3031{ 4104{
3032 ev_tstamp mn_prev = mn_now; 4105 ev_tstamp mn_prev = mn_now;
3033 4106
3034 ev_now_update (EV_A); 4107 ev_now_update (EV_A);
3035 timers_reschedule (EV_A_ mn_now - mn_prev); 4108 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3052inline_size void 4125inline_size void
3053wlist_del (WL *head, WL elem) 4126wlist_del (WL *head, WL elem)
3054{ 4127{
3055 while (*head) 4128 while (*head)
3056 { 4129 {
3057 if (expect_true (*head == elem)) 4130 if (ecb_expect_true (*head == elem))
3058 { 4131 {
3059 *head = elem->next; 4132 *head = elem->next;
3060 break; 4133 break;
3061 } 4134 }
3062 4135
… …
3074 w->pending = 0; 4147 w->pending = 0;
3075 } 4148 }
3076} 4149}
3077 4150
3078int 4151int
3079ev_clear_pending (EV_P_ void *w) 4152ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3080{ 4153{
3081 W w_ = (W)w; 4154 W w_ = (W)w;
3082 int pending = w_->pending; 4155 int pending = w_->pending;
3083 4156
3084 if (expect_true (pending)) 4157 if (ecb_expect_true (pending))
3085 { 4158 {
3086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4159 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3087 p->w = (W)&pending_w; 4160 p->w = (W)&pending_w;
3088 w_->pending = 0; 4161 w_->pending = 0;
3089 return p->events; 4162 return p->events;
… …
3116 w->active = 0; 4189 w->active = 0;
3117} 4190}
3118 4191
3119/*****************************************************************************/ 4192/*****************************************************************************/
3120 4193
3121void noinline 4194ecb_noinline
4195void
3122ev_io_start (EV_P_ ev_io *w) 4196ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3123{ 4197{
3124 int fd = w->fd; 4198 int fd = w->fd;
3125 4199
3126 if (expect_false (ev_is_active (w))) 4200 if (ecb_expect_false (ev_is_active (w)))
3127 return; 4201 return;
3128 4202
3129 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4203 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3130 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4204 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3131 4205
4206#if EV_VERIFY >= 2
4207 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4208#endif
3132 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3133 4210
3134 ev_start (EV_A_ (W)w, 1); 4211 ev_start (EV_A_ (W)w, 1);
3135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4212 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3136 wlist_add (&anfds[fd].head, (WL)w); 4213 wlist_add (&anfds[fd].head, (WL)w);
4214
4215 /* common bug, apparently */
4216 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3137 4217
3138 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4218 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3139 w->events &= ~EV__IOFDSET; 4219 w->events &= ~EV__IOFDSET;
3140 4220
3141 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3142} 4222}
3143 4223
3144void noinline 4224ecb_noinline
4225void
3145ev_io_stop (EV_P_ ev_io *w) 4226ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3146{ 4227{
3147 clear_pending (EV_A_ (W)w); 4228 clear_pending (EV_A_ (W)w);
3148 if (expect_false (!ev_is_active (w))) 4229 if (ecb_expect_false (!ev_is_active (w)))
3149 return; 4230 return;
3150 4231
3151 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4232 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3152 4233
4234#if EV_VERIFY >= 2
4235 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4236#endif
3153 EV_FREQUENT_CHECK; 4237 EV_FREQUENT_CHECK;
3154 4238
3155 wlist_del (&anfds[w->fd].head, (WL)w); 4239 wlist_del (&anfds[w->fd].head, (WL)w);
3156 ev_stop (EV_A_ (W)w); 4240 ev_stop (EV_A_ (W)w);
3157 4241
3158 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3159 4243
3160 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
3161} 4245}
3162 4246
3163void noinline 4247ecb_noinline
4248void
3164ev_timer_start (EV_P_ ev_timer *w) 4249ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3165{ 4250{
3166 if (expect_false (ev_is_active (w))) 4251 if (ecb_expect_false (ev_is_active (w)))
3167 return; 4252 return;
3168 4253
3169 ev_at (w) += mn_now; 4254 ev_at (w) += mn_now;
3170 4255
3171 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4256 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3172 4257
3173 EV_FREQUENT_CHECK; 4258 EV_FREQUENT_CHECK;
3174 4259
3175 ++timercnt; 4260 ++timercnt;
3176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4261 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3177 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4262 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3178 ANHE_w (timers [ev_active (w)]) = (WT)w; 4263 ANHE_w (timers [ev_active (w)]) = (WT)w;
3179 ANHE_at_cache (timers [ev_active (w)]); 4264 ANHE_at_cache (timers [ev_active (w)]);
3180 upheap (timers, ev_active (w)); 4265 upheap (timers, ev_active (w));
3181 4266
3182 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3183 4268
3184 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4269 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3185} 4270}
3186 4271
3187void noinline 4272ecb_noinline
4273void
3188ev_timer_stop (EV_P_ ev_timer *w) 4274ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3189{ 4275{
3190 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3192 return; 4278 return;
3193 4279
3194 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3195 4281
3196 { 4282 {
… …
3198 4284
3199 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4285 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3200 4286
3201 --timercnt; 4287 --timercnt;
3202 4288
3203 if (expect_true (active < timercnt + HEAP0)) 4289 if (ecb_expect_true (active < timercnt + HEAP0))
3204 { 4290 {
3205 timers [active] = timers [timercnt + HEAP0]; 4291 timers [active] = timers [timercnt + HEAP0];
3206 adjustheap (timers, timercnt, active); 4292 adjustheap (timers, timercnt, active);
3207 } 4293 }
3208 } 4294 }
… …
3212 ev_stop (EV_A_ (W)w); 4298 ev_stop (EV_A_ (W)w);
3213 4299
3214 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
3215} 4301}
3216 4302
3217void noinline 4303ecb_noinline
4304void
3218ev_timer_again (EV_P_ ev_timer *w) 4305ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3219{ 4306{
3220 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
4308
4309 clear_pending (EV_A_ (W)w);
3221 4310
3222 if (ev_is_active (w)) 4311 if (ev_is_active (w))
3223 { 4312 {
3224 if (w->repeat) 4313 if (w->repeat)
3225 { 4314 {
… …
3238 4327
3239 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
3240} 4329}
3241 4330
3242ev_tstamp 4331ev_tstamp
3243ev_timer_remaining (EV_P_ ev_timer *w) 4332ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3244{ 4333{
3245 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4334 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3246} 4335}
3247 4336
3248#if EV_PERIODIC_ENABLE 4337#if EV_PERIODIC_ENABLE
3249void noinline 4338ecb_noinline
4339void
3250ev_periodic_start (EV_P_ ev_periodic *w) 4340ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3251{ 4341{
3252 if (expect_false (ev_is_active (w))) 4342 if (ecb_expect_false (ev_is_active (w)))
3253 return; 4343 return;
4344
4345#if EV_USE_TIMERFD
4346 if (timerfd == -2)
4347 evtimerfd_init (EV_A);
4348#endif
3254 4349
3255 if (w->reschedule_cb) 4350 if (w->reschedule_cb)
3256 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4351 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3257 else if (w->interval) 4352 else if (w->interval)
3258 { 4353 {
… …
3264 4359
3265 EV_FREQUENT_CHECK; 4360 EV_FREQUENT_CHECK;
3266 4361
3267 ++periodiccnt; 4362 ++periodiccnt;
3268 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4363 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3269 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4364 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3270 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4365 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3271 ANHE_at_cache (periodics [ev_active (w)]); 4366 ANHE_at_cache (periodics [ev_active (w)]);
3272 upheap (periodics, ev_active (w)); 4367 upheap (periodics, ev_active (w));
3273 4368
3274 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3275 4370
3276 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4371 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3277} 4372}
3278 4373
3279void noinline 4374ecb_noinline
4375void
3280ev_periodic_stop (EV_P_ ev_periodic *w) 4376ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3281{ 4377{
3282 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
3284 return; 4380 return;
3285 4381
3286 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
3287 4383
3288 { 4384 {
… …
3290 4386
3291 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4387 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3292 4388
3293 --periodiccnt; 4389 --periodiccnt;
3294 4390
3295 if (expect_true (active < periodiccnt + HEAP0)) 4391 if (ecb_expect_true (active < periodiccnt + HEAP0))
3296 { 4392 {
3297 periodics [active] = periodics [periodiccnt + HEAP0]; 4393 periodics [active] = periodics [periodiccnt + HEAP0];
3298 adjustheap (periodics, periodiccnt, active); 4394 adjustheap (periodics, periodiccnt, active);
3299 } 4395 }
3300 } 4396 }
… …
3302 ev_stop (EV_A_ (W)w); 4398 ev_stop (EV_A_ (W)w);
3303 4399
3304 EV_FREQUENT_CHECK; 4400 EV_FREQUENT_CHECK;
3305} 4401}
3306 4402
3307void noinline 4403ecb_noinline
4404void
3308ev_periodic_again (EV_P_ ev_periodic *w) 4405ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3309{ 4406{
3310 /* TODO: use adjustheap and recalculation */ 4407 /* TODO: use adjustheap and recalculation */
3311 ev_periodic_stop (EV_A_ w); 4408 ev_periodic_stop (EV_A_ w);
3312 ev_periodic_start (EV_A_ w); 4409 ev_periodic_start (EV_A_ w);
3313} 4410}
… …
3317# define SA_RESTART 0 4414# define SA_RESTART 0
3318#endif 4415#endif
3319 4416
3320#if EV_SIGNAL_ENABLE 4417#if EV_SIGNAL_ENABLE
3321 4418
3322void noinline 4419ecb_noinline
4420void
3323ev_signal_start (EV_P_ ev_signal *w) 4421ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3324{ 4422{
3325 if (expect_false (ev_is_active (w))) 4423 if (ecb_expect_false (ev_is_active (w)))
3326 return; 4424 return;
3327 4425
3328 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3329 4427
3330#if EV_MULTIPLICITY 4428#if EV_MULTIPLICITY
3331 assert (("libev: a signal must not be attached to two different loops", 4429 assert (("libev: a signal must not be attached to two different loops",
3332 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4430 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3333 4431
3334 signals [w->signum - 1].loop = EV_A; 4432 signals [w->signum - 1].loop = EV_A;
4433 ECB_MEMORY_FENCE_RELEASE;
3335#endif 4434#endif
3336 4435
3337 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
3338 4437
3339#if EV_USE_SIGNALFD 4438#if EV_USE_SIGNALFD
… …
3398 } 4497 }
3399 4498
3400 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3401} 4500}
3402 4501
3403void noinline 4502ecb_noinline
4503void
3404ev_signal_stop (EV_P_ ev_signal *w) 4504ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3405{ 4505{
3406 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
3408 return; 4508 return;
3409 4509
3410 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
3411 4511
3412 wlist_del (&signals [w->signum - 1].head, (WL)w); 4512 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3440#endif 4540#endif
3441 4541
3442#if EV_CHILD_ENABLE 4542#if EV_CHILD_ENABLE
3443 4543
3444void 4544void
3445ev_child_start (EV_P_ ev_child *w) 4545ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3446{ 4546{
3447#if EV_MULTIPLICITY 4547#if EV_MULTIPLICITY
3448 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4548 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3449#endif 4549#endif
3450 if (expect_false (ev_is_active (w))) 4550 if (ecb_expect_false (ev_is_active (w)))
3451 return; 4551 return;
3452 4552
3453 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
3454 4554
3455 ev_start (EV_A_ (W)w, 1); 4555 ev_start (EV_A_ (W)w, 1);
… …
3457 4557
3458 EV_FREQUENT_CHECK; 4558 EV_FREQUENT_CHECK;
3459} 4559}
3460 4560
3461void 4561void
3462ev_child_stop (EV_P_ ev_child *w) 4562ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3463{ 4563{
3464 clear_pending (EV_A_ (W)w); 4564 clear_pending (EV_A_ (W)w);
3465 if (expect_false (!ev_is_active (w))) 4565 if (ecb_expect_false (!ev_is_active (w)))
3466 return; 4566 return;
3467 4567
3468 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3469 4569
3470 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4570 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3484 4584
3485#define DEF_STAT_INTERVAL 5.0074891 4585#define DEF_STAT_INTERVAL 5.0074891
3486#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3487#define MIN_STAT_INTERVAL 0.1074891 4587#define MIN_STAT_INTERVAL 0.1074891
3488 4588
3489static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4589ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3490 4590
3491#if EV_USE_INOTIFY 4591#if EV_USE_INOTIFY
3492 4592
3493/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4593/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3494# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4594# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3495 4595
3496static void noinline 4596ecb_noinline
4597static void
3497infy_add (EV_P_ ev_stat *w) 4598infy_add (EV_P_ ev_stat *w)
3498{ 4599{
3499 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4600 w->wd = inotify_add_watch (fs_fd, w->path,
4601 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4602 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4603 | IN_DONT_FOLLOW | IN_MASK_ADD);
3500 4604
3501 if (w->wd >= 0) 4605 if (w->wd >= 0)
3502 { 4606 {
3503 struct statfs sfs; 4607 struct statfs sfs;
3504 4608
… …
3508 4612
3509 if (!fs_2625) 4613 if (!fs_2625)
3510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4614 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3511 else if (!statfs (w->path, &sfs) 4615 else if (!statfs (w->path, &sfs)
3512 && (sfs.f_type == 0x1373 /* devfs */ 4616 && (sfs.f_type == 0x1373 /* devfs */
4617 || sfs.f_type == 0x4006 /* fat */
4618 || sfs.f_type == 0x4d44 /* msdos */
3513 || sfs.f_type == 0xEF53 /* ext2/3 */ 4619 || sfs.f_type == 0xEF53 /* ext2/3 */
4620 || sfs.f_type == 0x72b6 /* jffs2 */
4621 || sfs.f_type == 0x858458f6 /* ramfs */
4622 || sfs.f_type == 0x5346544e /* ntfs */
3514 || sfs.f_type == 0x3153464a /* jfs */ 4623 || sfs.f_type == 0x3153464a /* jfs */
4624 || sfs.f_type == 0x9123683e /* btrfs */
3515 || sfs.f_type == 0x52654973 /* reiser3 */ 4625 || sfs.f_type == 0x52654973 /* reiser3 */
3516 || sfs.f_type == 0x01021994 /* tempfs */ 4626 || sfs.f_type == 0x01021994 /* tmpfs */
3517 || sfs.f_type == 0x58465342 /* xfs */)) 4627 || sfs.f_type == 0x58465342 /* xfs */))
3518 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4628 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3519 else 4629 else
3520 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4630 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3521 } 4631 }
… …
3556 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4666 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3557 ev_timer_again (EV_A_ &w->timer); 4667 ev_timer_again (EV_A_ &w->timer);
3558 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4668 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3559} 4669}
3560 4670
3561static void noinline 4671ecb_noinline
4672static void
3562infy_del (EV_P_ ev_stat *w) 4673infy_del (EV_P_ ev_stat *w)
3563{ 4674{
3564 int slot; 4675 int slot;
3565 int wd = w->wd; 4676 int wd = w->wd;
3566 4677
… …
3573 4684
3574 /* remove this watcher, if others are watching it, they will rearm */ 4685 /* remove this watcher, if others are watching it, they will rearm */
3575 inotify_rm_watch (fs_fd, wd); 4686 inotify_rm_watch (fs_fd, wd);
3576} 4687}
3577 4688
3578static void noinline 4689ecb_noinline
4690static void
3579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4691infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3580{ 4692{
3581 if (slot < 0) 4693 if (slot < 0)
3582 /* overflow, need to check for all hash slots */ 4694 /* overflow, need to check for all hash slots */
3583 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4695 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3619 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4731 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3620 ofs += sizeof (struct inotify_event) + ev->len; 4732 ofs += sizeof (struct inotify_event) + ev->len;
3621 } 4733 }
3622} 4734}
3623 4735
3624inline_size void ecb_cold 4736inline_size ecb_cold
4737void
3625ev_check_2625 (EV_P) 4738ev_check_2625 (EV_P)
3626{ 4739{
3627 /* kernels < 2.6.25 are borked 4740 /* kernels < 2.6.25 are borked
3628 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4741 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3629 */ 4742 */
… …
3634} 4747}
3635 4748
3636inline_size int 4749inline_size int
3637infy_newfd (void) 4750infy_newfd (void)
3638{ 4751{
3639#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4752#if defined IN_CLOEXEC && defined IN_NONBLOCK
3640 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4753 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3641 if (fd >= 0) 4754 if (fd >= 0)
3642 return fd; 4755 return fd;
3643#endif 4756#endif
3644 return inotify_init (); 4757 return inotify_init ();
… …
3719#else 4832#else
3720# define EV_LSTAT(p,b) lstat (p, b) 4833# define EV_LSTAT(p,b) lstat (p, b)
3721#endif 4834#endif
3722 4835
3723void 4836void
3724ev_stat_stat (EV_P_ ev_stat *w) 4837ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3725{ 4838{
3726 if (lstat (w->path, &w->attr) < 0) 4839 if (lstat (w->path, &w->attr) < 0)
3727 w->attr.st_nlink = 0; 4840 w->attr.st_nlink = 0;
3728 else if (!w->attr.st_nlink) 4841 else if (!w->attr.st_nlink)
3729 w->attr.st_nlink = 1; 4842 w->attr.st_nlink = 1;
3730} 4843}
3731 4844
3732static void noinline 4845ecb_noinline
4846static void
3733stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4847stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3734{ 4848{
3735 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4849 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3736 4850
3737 ev_statdata prev = w->attr; 4851 ev_statdata prev = w->attr;
… …
3768 ev_feed_event (EV_A_ w, EV_STAT); 4882 ev_feed_event (EV_A_ w, EV_STAT);
3769 } 4883 }
3770} 4884}
3771 4885
3772void 4886void
3773ev_stat_start (EV_P_ ev_stat *w) 4887ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3774{ 4888{
3775 if (expect_false (ev_is_active (w))) 4889 if (ecb_expect_false (ev_is_active (w)))
3776 return; 4890 return;
3777 4891
3778 ev_stat_stat (EV_A_ w); 4892 ev_stat_stat (EV_A_ w);
3779 4893
3780 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4894 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3799 4913
3800 EV_FREQUENT_CHECK; 4914 EV_FREQUENT_CHECK;
3801} 4915}
3802 4916
3803void 4917void
3804ev_stat_stop (EV_P_ ev_stat *w) 4918ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3805{ 4919{
3806 clear_pending (EV_A_ (W)w); 4920 clear_pending (EV_A_ (W)w);
3807 if (expect_false (!ev_is_active (w))) 4921 if (ecb_expect_false (!ev_is_active (w)))
3808 return; 4922 return;
3809 4923
3810 EV_FREQUENT_CHECK; 4924 EV_FREQUENT_CHECK;
3811 4925
3812#if EV_USE_INOTIFY 4926#if EV_USE_INOTIFY
… …
3825} 4939}
3826#endif 4940#endif
3827 4941
3828#if EV_IDLE_ENABLE 4942#if EV_IDLE_ENABLE
3829void 4943void
3830ev_idle_start (EV_P_ ev_idle *w) 4944ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3831{ 4945{
3832 if (expect_false (ev_is_active (w))) 4946 if (ecb_expect_false (ev_is_active (w)))
3833 return; 4947 return;
3834 4948
3835 pri_adjust (EV_A_ (W)w); 4949 pri_adjust (EV_A_ (W)w);
3836 4950
3837 EV_FREQUENT_CHECK; 4951 EV_FREQUENT_CHECK;
… …
3840 int active = ++idlecnt [ABSPRI (w)]; 4954 int active = ++idlecnt [ABSPRI (w)];
3841 4955
3842 ++idleall; 4956 ++idleall;
3843 ev_start (EV_A_ (W)w, active); 4957 ev_start (EV_A_ (W)w, active);
3844 4958
3845 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4959 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3846 idles [ABSPRI (w)][active - 1] = w; 4960 idles [ABSPRI (w)][active - 1] = w;
3847 } 4961 }
3848 4962
3849 EV_FREQUENT_CHECK; 4963 EV_FREQUENT_CHECK;
3850} 4964}
3851 4965
3852void 4966void
3853ev_idle_stop (EV_P_ ev_idle *w) 4967ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3854{ 4968{
3855 clear_pending (EV_A_ (W)w); 4969 clear_pending (EV_A_ (W)w);
3856 if (expect_false (!ev_is_active (w))) 4970 if (ecb_expect_false (!ev_is_active (w)))
3857 return; 4971 return;
3858 4972
3859 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
3860 4974
3861 { 4975 {
… …
3872} 4986}
3873#endif 4987#endif
3874 4988
3875#if EV_PREPARE_ENABLE 4989#if EV_PREPARE_ENABLE
3876void 4990void
3877ev_prepare_start (EV_P_ ev_prepare *w) 4991ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3878{ 4992{
3879 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
3880 return; 4994 return;
3881 4995
3882 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3883 4997
3884 ev_start (EV_A_ (W)w, ++preparecnt); 4998 ev_start (EV_A_ (W)w, ++preparecnt);
3885 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4999 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3886 prepares [preparecnt - 1] = w; 5000 prepares [preparecnt - 1] = w;
3887 5001
3888 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
3889} 5003}
3890 5004
3891void 5005void
3892ev_prepare_stop (EV_P_ ev_prepare *w) 5006ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3893{ 5007{
3894 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
3896 return; 5010 return;
3897 5011
3898 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
3899 5013
3900 { 5014 {
… …
3910} 5024}
3911#endif 5025#endif
3912 5026
3913#if EV_CHECK_ENABLE 5027#if EV_CHECK_ENABLE
3914void 5028void
3915ev_check_start (EV_P_ ev_check *w) 5029ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3916{ 5030{
3917 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
3918 return; 5032 return;
3919 5033
3920 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
3921 5035
3922 ev_start (EV_A_ (W)w, ++checkcnt); 5036 ev_start (EV_A_ (W)w, ++checkcnt);
3923 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5037 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3924 checks [checkcnt - 1] = w; 5038 checks [checkcnt - 1] = w;
3925 5039
3926 EV_FREQUENT_CHECK; 5040 EV_FREQUENT_CHECK;
3927} 5041}
3928 5042
3929void 5043void
3930ev_check_stop (EV_P_ ev_check *w) 5044ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3931{ 5045{
3932 clear_pending (EV_A_ (W)w); 5046 clear_pending (EV_A_ (W)w);
3933 if (expect_false (!ev_is_active (w))) 5047 if (ecb_expect_false (!ev_is_active (w)))
3934 return; 5048 return;
3935 5049
3936 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3937 5051
3938 { 5052 {
… …
3947 EV_FREQUENT_CHECK; 5061 EV_FREQUENT_CHECK;
3948} 5062}
3949#endif 5063#endif
3950 5064
3951#if EV_EMBED_ENABLE 5065#if EV_EMBED_ENABLE
3952void noinline 5066ecb_noinline
5067void
3953ev_embed_sweep (EV_P_ ev_embed *w) 5068ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3954{ 5069{
3955 ev_run (w->other, EVRUN_NOWAIT); 5070 ev_run (w->other, EVRUN_NOWAIT);
3956} 5071}
3957 5072
3958static void 5073static void
… …
3980 ev_run (EV_A_ EVRUN_NOWAIT); 5095 ev_run (EV_A_ EVRUN_NOWAIT);
3981 } 5096 }
3982 } 5097 }
3983} 5098}
3984 5099
5100#if EV_FORK_ENABLE
3985static void 5101static void
3986embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5102embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3987{ 5103{
3988 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5104 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3989 5105
… …
3996 ev_run (EV_A_ EVRUN_NOWAIT); 5112 ev_run (EV_A_ EVRUN_NOWAIT);
3997 } 5113 }
3998 5114
3999 ev_embed_start (EV_A_ w); 5115 ev_embed_start (EV_A_ w);
4000} 5116}
5117#endif
4001 5118
4002#if 0 5119#if 0
4003static void 5120static void
4004embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5121embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4005{ 5122{
4006 ev_idle_stop (EV_A_ idle); 5123 ev_idle_stop (EV_A_ idle);
4007} 5124}
4008#endif 5125#endif
4009 5126
4010void 5127void
4011ev_embed_start (EV_P_ ev_embed *w) 5128ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4012{ 5129{
4013 if (expect_false (ev_is_active (w))) 5130 if (ecb_expect_false (ev_is_active (w)))
4014 return; 5131 return;
4015 5132
4016 { 5133 {
4017 EV_P = w->other; 5134 EV_P = w->other;
4018 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5135 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4026 5143
4027 ev_prepare_init (&w->prepare, embed_prepare_cb); 5144 ev_prepare_init (&w->prepare, embed_prepare_cb);
4028 ev_set_priority (&w->prepare, EV_MINPRI); 5145 ev_set_priority (&w->prepare, EV_MINPRI);
4029 ev_prepare_start (EV_A_ &w->prepare); 5146 ev_prepare_start (EV_A_ &w->prepare);
4030 5147
5148#if EV_FORK_ENABLE
4031 ev_fork_init (&w->fork, embed_fork_cb); 5149 ev_fork_init (&w->fork, embed_fork_cb);
4032 ev_fork_start (EV_A_ &w->fork); 5150 ev_fork_start (EV_A_ &w->fork);
5151#endif
4033 5152
4034 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5153 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4035 5154
4036 ev_start (EV_A_ (W)w, 1); 5155 ev_start (EV_A_ (W)w, 1);
4037 5156
4038 EV_FREQUENT_CHECK; 5157 EV_FREQUENT_CHECK;
4039} 5158}
4040 5159
4041void 5160void
4042ev_embed_stop (EV_P_ ev_embed *w) 5161ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4043{ 5162{
4044 clear_pending (EV_A_ (W)w); 5163 clear_pending (EV_A_ (W)w);
4045 if (expect_false (!ev_is_active (w))) 5164 if (ecb_expect_false (!ev_is_active (w)))
4046 return; 5165 return;
4047 5166
4048 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
4049 5168
4050 ev_io_stop (EV_A_ &w->io); 5169 ev_io_stop (EV_A_ &w->io);
4051 ev_prepare_stop (EV_A_ &w->prepare); 5170 ev_prepare_stop (EV_A_ &w->prepare);
5171#if EV_FORK_ENABLE
4052 ev_fork_stop (EV_A_ &w->fork); 5172 ev_fork_stop (EV_A_ &w->fork);
5173#endif
4053 5174
4054 ev_stop (EV_A_ (W)w); 5175 ev_stop (EV_A_ (W)w);
4055 5176
4056 EV_FREQUENT_CHECK; 5177 EV_FREQUENT_CHECK;
4057} 5178}
4058#endif 5179#endif
4059 5180
4060#if EV_FORK_ENABLE 5181#if EV_FORK_ENABLE
4061void 5182void
4062ev_fork_start (EV_P_ ev_fork *w) 5183ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4063{ 5184{
4064 if (expect_false (ev_is_active (w))) 5185 if (ecb_expect_false (ev_is_active (w)))
4065 return; 5186 return;
4066 5187
4067 EV_FREQUENT_CHECK; 5188 EV_FREQUENT_CHECK;
4068 5189
4069 ev_start (EV_A_ (W)w, ++forkcnt); 5190 ev_start (EV_A_ (W)w, ++forkcnt);
4070 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5191 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4071 forks [forkcnt - 1] = w; 5192 forks [forkcnt - 1] = w;
4072 5193
4073 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4074} 5195}
4075 5196
4076void 5197void
4077ev_fork_stop (EV_P_ ev_fork *w) 5198ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4078{ 5199{
4079 clear_pending (EV_A_ (W)w); 5200 clear_pending (EV_A_ (W)w);
4080 if (expect_false (!ev_is_active (w))) 5201 if (ecb_expect_false (!ev_is_active (w)))
4081 return; 5202 return;
4082 5203
4083 EV_FREQUENT_CHECK; 5204 EV_FREQUENT_CHECK;
4084 5205
4085 { 5206 {
… …
4095} 5216}
4096#endif 5217#endif
4097 5218
4098#if EV_CLEANUP_ENABLE 5219#if EV_CLEANUP_ENABLE
4099void 5220void
4100ev_cleanup_start (EV_P_ ev_cleanup *w) 5221ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4101{ 5222{
4102 if (expect_false (ev_is_active (w))) 5223 if (ecb_expect_false (ev_is_active (w)))
4103 return; 5224 return;
4104 5225
4105 EV_FREQUENT_CHECK; 5226 EV_FREQUENT_CHECK;
4106 5227
4107 ev_start (EV_A_ (W)w, ++cleanupcnt); 5228 ev_start (EV_A_ (W)w, ++cleanupcnt);
4108 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5229 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4109 cleanups [cleanupcnt - 1] = w; 5230 cleanups [cleanupcnt - 1] = w;
4110 5231
4111 /* cleanup watchers should never keep a refcount on the loop */ 5232 /* cleanup watchers should never keep a refcount on the loop */
4112 ev_unref (EV_A); 5233 ev_unref (EV_A);
4113 EV_FREQUENT_CHECK; 5234 EV_FREQUENT_CHECK;
4114} 5235}
4115 5236
4116void 5237void
4117ev_cleanup_stop (EV_P_ ev_cleanup *w) 5238ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4118{ 5239{
4119 clear_pending (EV_A_ (W)w); 5240 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w))) 5241 if (ecb_expect_false (!ev_is_active (w)))
4121 return; 5242 return;
4122 5243
4123 EV_FREQUENT_CHECK; 5244 EV_FREQUENT_CHECK;
4124 ev_ref (EV_A); 5245 ev_ref (EV_A);
4125 5246
… …
4136} 5257}
4137#endif 5258#endif
4138 5259
4139#if EV_ASYNC_ENABLE 5260#if EV_ASYNC_ENABLE
4140void 5261void
4141ev_async_start (EV_P_ ev_async *w) 5262ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4142{ 5263{
4143 if (expect_false (ev_is_active (w))) 5264 if (ecb_expect_false (ev_is_active (w)))
4144 return; 5265 return;
4145 5266
4146 w->sent = 0; 5267 w->sent = 0;
4147 5268
4148 evpipe_init (EV_A); 5269 evpipe_init (EV_A);
4149 5270
4150 EV_FREQUENT_CHECK; 5271 EV_FREQUENT_CHECK;
4151 5272
4152 ev_start (EV_A_ (W)w, ++asynccnt); 5273 ev_start (EV_A_ (W)w, ++asynccnt);
4153 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5274 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4154 asyncs [asynccnt - 1] = w; 5275 asyncs [asynccnt - 1] = w;
4155 5276
4156 EV_FREQUENT_CHECK; 5277 EV_FREQUENT_CHECK;
4157} 5278}
4158 5279
4159void 5280void
4160ev_async_stop (EV_P_ ev_async *w) 5281ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4161{ 5282{
4162 clear_pending (EV_A_ (W)w); 5283 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 5284 if (ecb_expect_false (!ev_is_active (w)))
4164 return; 5285 return;
4165 5286
4166 EV_FREQUENT_CHECK; 5287 EV_FREQUENT_CHECK;
4167 5288
4168 { 5289 {
… …
4176 5297
4177 EV_FREQUENT_CHECK; 5298 EV_FREQUENT_CHECK;
4178} 5299}
4179 5300
4180void 5301void
4181ev_async_send (EV_P_ ev_async *w) 5302ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4182{ 5303{
4183 w->sent = 1; 5304 w->sent = 1;
4184 evpipe_write (EV_A_ &async_pending); 5305 evpipe_write (EV_A_ &async_pending);
4185} 5306}
4186#endif 5307#endif
… …
4223 5344
4224 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5345 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4225} 5346}
4226 5347
4227void 5348void
4228ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5349ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4229{ 5350{
4230 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5351 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4231
4232 if (expect_false (!once))
4233 {
4234 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4235 return;
4236 }
4237 5352
4238 once->cb = cb; 5353 once->cb = cb;
4239 once->arg = arg; 5354 once->arg = arg;
4240 5355
4241 ev_init (&once->io, once_cb_io); 5356 ev_init (&once->io, once_cb_io);
… …
4254} 5369}
4255 5370
4256/*****************************************************************************/ 5371/*****************************************************************************/
4257 5372
4258#if EV_WALK_ENABLE 5373#if EV_WALK_ENABLE
4259void ecb_cold 5374ecb_cold
5375void
4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5376ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4261{ 5377{
4262 int i, j; 5378 int i, j;
4263 ev_watcher_list *wl, *wn; 5379 ev_watcher_list *wl, *wn;
4264 5380
4265 if (types & (EV_IO | EV_EMBED)) 5381 if (types & (EV_IO | EV_EMBED))
… …
4371 5487
4372#if EV_MULTIPLICITY 5488#if EV_MULTIPLICITY
4373 #include "ev_wrap.h" 5489 #include "ev_wrap.h"
4374#endif 5490#endif
4375 5491
4376EV_CPP(})
4377

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