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Comparing libev/ev.c (file contents):
Revision 1.406 by root, Tue Jan 24 16:37:12 2012 UTC vs.
Revision 1.522 by root, Tue Dec 31 06:02:28 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>
… …
181 218
182#ifdef EV_H 219#ifdef EV_H
183# include EV_H 220# include EV_H
184#else 221#else
185# include "ev.h" 222# include "ev.h"
223#endif
224
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
186#endif 234#endif
187 235
188#ifndef _WIN32 236#ifndef _WIN32
189# include <sys/time.h> 237# include <sys/time.h>
190# include <sys/wait.h> 238# include <sys/wait.h>
191# include <unistd.h> 239# include <unistd.h>
192#else 240#else
193# include <io.h> 241# include <io.h>
194# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
195# include <windows.h> 244# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
198# endif 247# endif
199# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
200#endif 249#endif
201 250
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
209
210/* 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 */
211 252
212/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 254#if defined EV_NSIG
214/* use what's provided */ 255/* use what's provided */
215#elif defined (NSIG) 256#elif defined NSIG
216# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 258#elif defined _NSIG
218# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 260#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 262#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 266#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 268#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 272#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 274#else
234# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 276#endif
239 277
240#ifndef EV_USE_FLOOR 278#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 279# define EV_USE_FLOOR 0
242#endif 280#endif
243 281
244#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 285# else
248# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
249# endif 287# endif
250#endif 288#endif
251 289
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
252#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 302# else
256# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
257# endif 304# endif
258#endif 305#endif
… …
295 342
296#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
297# define EV_USE_PORT 0 344# define EV_USE_PORT 0
298#endif 345#endif
299 346
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
300#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
302# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
303# else 366# else
304# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
327# else 390# else
328# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
329# endif 392# endif
330#endif 393#endif
331 394
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
332#if 0 /* debugging */ 403#if 0 /* debugging */
333# define EV_VERIFY 3 404# define EV_VERIFY 3
334# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
335# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
336#endif 407#endif
… …
345 416
346#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 419#endif
349 420
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
350/* 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, */
351/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 440# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
358# else 446# else
359# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
360# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
361# endif 449# endif
362#endif 450#endif
363 451
364/* 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 */
365 453
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
375#endif 457#endif
376 458
… …
382#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
383# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
384# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
385#endif 467#endif
386 468
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
387#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
388/* 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 */
389# if !defined(_WIN32) && !defined(__hpux) 479# if !defined _WIN32 && !defined __hpux
390# 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
391# endif 506# endif
392#endif 507#endif
393 508
394#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
395# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
399# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
401# endif 516# endif
402#endif 517#endif
403 518
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif
407
408#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
409/* 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 */
410# include <stdint.h> 521# include <stdint.h>
411# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
412# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
413# endif 524# endif
414# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
420# endif 531# endif
421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
422#endif 533#endif
423 534
424#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
425/* 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 */
426# include <stdint.h> 537# include <stdint.h>
427# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
428# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
429# endif 540# endif
430# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
432# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
433# else 544# else
434# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
435# endif 546# endif
436# endif 547# endif
437EV_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);
438 549
439struct signalfd_siginfo 550struct signalfd_siginfo
440{ 551{
441 uint32_t ssi_signo; 552 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
443}; 554};
444#endif 555#endif
445 556
446/**/ 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/*****************************************************************************/
447 568
448#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 571#else
451# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
456 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
457 */ 578 */
458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
460 581
461#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) */
462#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) */
463 584
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
464#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)
465#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
466 602
467/* 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 */
468/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
469/* 605/*
470 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
471 * 607 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 609 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 610 * All rights reserved.
475 * 611 *
476 * 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-
477 * tion, are permitted provided that the following conditions are met: 613 * tion, are permitted provided that the following conditions are met:
… …
491 * 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;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * 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
495 * 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.
496 */ 643 */
497 644
498#ifndef ECB_H 645#ifndef ECB_H
499#define ECB_H 646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
500 650
501#ifdef _WIN32 651#ifdef _WIN32
502 typedef signed char int8_t; 652 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 660 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 661 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 662 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 663 typedef unsigned __int64 uint64_t;
514 #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
515#else 674#else
516 #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
517#endif 693#endif
518 694
519/* many compilers define _GNUC_ to some versions but then only implement 695/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 696 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 697 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 698 * or so.
523 * 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
524 * 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.
525 */ 701 */
526#ifndef ECB_GCC_VERSION
527 #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__
528 #define ECB_GCC_VERSION(major,minor) 0 703 #define ECB_GCC_VERSION(major,minor) 0
529 #else 704#else
530 #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)))
531 #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
532#endif 747#endif
533 748
534/*****************************************************************************/ 749/*****************************************************************************/
535 750
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* 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 */
538 753
539#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
540 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 760#endif
542 761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
543#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
545 #if __i386 || __i386__ 774 #if __i386 || __i386__
546 #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")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
549 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 778 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #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")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif __sparc || __sparc__ 798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 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")
565 #endif 823 #endif
566 #endif 824 #endif
567#endif 825#endif
568 826
569#ifndef ECB_MEMORY_FENCE 827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
571 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
573 /*#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()
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #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 */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32) 855 #elif defined _WIN32
580 #include <WinNT.h> 856 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h> 859 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
587 #endif 877 #endif
588#endif 878#endif
589 879
590#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #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)
605 #endif 895 #endif
606#endif 896#endif
607 897
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif 900#endif
611 901
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif 904#endif
615 905
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
616/*****************************************************************************/ 910/*****************************************************************************/
617 911
618#define ECB_C99 (__STDC_VERSION__ >= 199901L) 912#if ECB_CPP
619
620#if __cplusplus
621 #define ecb_inline static inline 913 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
624#elif ECB_C99 916#elif ECB_C99
625 #define ecb_inline static inline 917 #define ecb_inline static inline
… …
639 931
640#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
643#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))
644 937
645#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
646 939
647#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
648 #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)
649 #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)
650 #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)
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else 964#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality) 965 #define ecb_prefetch(addr,rw,locality)
657#endif 966#endif
658 967
659/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
660#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; };
661 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
662#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
663 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
664#endif 975#endif
665 976
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
666#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__)) 995#endif
996
668#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
670#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
671 1012
672#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__)) 1014 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__)) 1015 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__)) 1016 #define ecb_cold ecb_attribute ((__cold__))
… …
687/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
690 1031
691/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
692#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))
693 /* 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 */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */ 1043 /* no popcountll */
700#else 1044#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
702 ecb_function_ int 1046 ecb_function_ ecb_const int
703 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
704 { 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
705 int r = 0; 1054 int r = 0;
706 1055
707 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
708 1057
709#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
719 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
721#endif 1070#endif
722 1071
723 return r; 1072 return r;
1073#endif
724 } 1074 }
725 1075
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
727 ecb_function_ int 1077 ecb_function_ ecb_const int
728 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
729 { 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
730 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
732 } 1088 }
733 1089
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
735 ecb_function_ int 1091 ecb_function_ ecb_const int
736 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
737 { 1093 {
738 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101; 1097 x *= 0x01010101;
742 1098
743 return x >> 24; 1099 return x >> 24;
744 } 1100 }
745 1101
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
747 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
748 { 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
749 int r = 0; 1110 int r = 0;
750 1111
751 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
756 1117
757 return r; 1118 return r;
1119#endif
758 } 1120 }
759 1121
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
761 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
762 { 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
763 int r = 0; 1130 int r = 0;
764 1131
765 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
766 1133
767 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
768 } 1136 }
769#endif 1137#endif
770 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
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
773{ 1146{
774 return ( (x * 0x0802U & 0x22110U) 1147 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776} 1149}
777 1150
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
780{ 1153{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8); 1157 x = ( x >> 8 ) | ( x << 8);
785 1158
786 return x; 1159 return x;
787} 1160}
788 1161
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
791{ 1164{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
798 return x; 1171 return x;
799} 1172}
800 1173
801/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */ 1175/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
804ecb_function_ int 1177ecb_function_ ecb_const int
805ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
806{ 1179{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808} 1181}
809 1182
810ecb_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);
811ecb_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);
812ecb_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);
813ecb_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);
814ecb_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);
815ecb_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);
816ecb_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);
817ecb_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);
818 1191
819ecb_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); }
820ecb_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); }
821ecb_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); }
822ecb_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); }
823ecb_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); }
824ecb_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); }
825ecb_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); }
826ecb_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); }
827 1200
828#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
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
830 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #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)))
832#else 1214#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
834 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
835 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
836 { 1218 {
837 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
838 } 1220 }
839 1221
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
841 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
842 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
843 { 1225 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 } 1227 }
846 1228
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
848 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
849 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
850 { 1232 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 } 1234 }
853#endif 1235#endif
854 1236
855#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
856 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
857#else 1239#else
858 /* 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 :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
860 ecb_function_ void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
861#endif 1243#endif
862 1244
863/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
865 1247
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
867ecb_function_ unsigned char 1249ecb_inline ecb_const uint32_t
868ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
869{ 1251{
870 const uint32_t u = 0x11223344; 1252 /* the union code still generates code under pressure in gcc, */
871 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
872} 1274}
873 1275
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
875ecb_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; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
877ecb_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; }
878 1280
879#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #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))
881#else 1283#else
882 #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)))
883#endif 1285#endif
884 1286
885#if __cplusplus 1287#if ECB_CPP
886 template<typename T> 1288 template<typename T>
887 static inline T ecb_div_rd (T val, T div) 1289 static inline T ecb_div_rd (T val, T div)
888 { 1290 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 } 1292 }
… …
907 } 1309 }
908#else 1310#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif 1312#endif
911 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
912#endif 1619#endif
913 1620
914/* ECB.H END */ 1621/* ECB.H END */
915 1622
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
917/* if your architecture doesn't need memory fences, e.g. because it is 1624/* if your architecture doesn't need memory fences, e.g. because it is
918 * single-cpu/core, or if you use libev in a project that doesn't use libev 1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
919 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
920 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
921 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
922 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
923 */ 1630 */
924# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
928# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
929# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
931#endif 1638#endif
932 1639
933#define expect_false(cond) ecb_expect_false (cond)
934#define expect_true(cond) ecb_expect_true (cond)
935#define noinline ecb_noinline
936
937#define inline_size ecb_inline 1640#define inline_size ecb_inline
938 1641
939#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
940# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
941#else 1644#else
942# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
943#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/*****************************************************************************/
944 1713
945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
946 1715
947#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
948# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
949#else 1718#else
950# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
951#endif 1720#endif
952 1721
953#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
954#define EMPTY2(a,b) /* used to suppress some warnings */
955 1723
956typedef ev_watcher *W; 1724typedef ev_watcher *W;
957typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
958typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
959 1727
… …
984# include "ev_win32.c" 1752# include "ev_win32.c"
985#endif 1753#endif
986 1754
987/*****************************************************************************/ 1755/*****************************************************************************/
988 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
989/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
990 1762
991#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
992# include <math.h> 1764# include <math.h>
993# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
994#else 1766#else
995 1767
996#include <float.h> 1768#include <float.h>
997 1769
998/* 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
999static ev_tstamp noinline 1772static ev_tstamp
1000ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1001{ 1774{
1002 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1005#else 1778#else
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1007#endif 1780#endif
1008 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
1009 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1010 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1011 { 1792 {
1012 ev_tstamp f; 1793 ev_tstamp f;
1013 1794
1014 if (v == v - 1.) 1795 if (v == v - 1.)
1015 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1016 1797
1017 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1018 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1019 } 1800 }
1020 1801
1021 /* special treatment for negative args? */
1022 if (expect_false (v < 0.))
1023 {
1024 ev_tstamp f = -ev_floor (-v);
1025
1026 return f - (f == v ? 0 : 1);
1027 }
1028
1029 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
1030 return (unsigned long)v; 1803 return (unsigned long)v;
1031} 1804}
1032 1805
1033#endif 1806#endif
… …
1036 1809
1037#ifdef __linux 1810#ifdef __linux
1038# include <sys/utsname.h> 1811# include <sys/utsname.h>
1039#endif 1812#endif
1040 1813
1041static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1042ev_linux_version (void) 1816ev_linux_version (void)
1043{ 1817{
1044#ifdef __linux 1818#ifdef __linux
1045 unsigned int v = 0; 1819 unsigned int v = 0;
1046 struct utsname buf; 1820 struct utsname buf;
… …
1075} 1849}
1076 1850
1077/*****************************************************************************/ 1851/*****************************************************************************/
1078 1852
1079#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1080static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1081ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1082{ 1857{
1083 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1084} 1859}
1085#endif 1860#endif
1086 1861
1087static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1088 1863
1089void ecb_cold 1864ecb_cold
1865void
1090ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1091{ 1867{
1092 syserr_cb = cb; 1868 syserr_cb = cb;
1093} 1869}
1094 1870
1095static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1096ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1097{ 1874{
1098 if (!msg) 1875 if (!msg)
1099 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1100 1877
… …
1113 abort (); 1890 abort ();
1114 } 1891 }
1115} 1892}
1116 1893
1117static void * 1894static void *
1118ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1119{ 1896{
1120#if __GLIBC__
1121 return realloc (ptr, size);
1122#else
1123 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1124 * 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
1125 * 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.
1126 */ 1902 */
1127 1903
1128 if (size) 1904 if (size)
1129 return realloc (ptr, size); 1905 return realloc (ptr, size);
1130 1906
1131 free (ptr); 1907 free (ptr);
1132 return 0; 1908 return 0;
1133#endif
1134} 1909}
1135 1910
1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1137 1912
1138void ecb_cold 1913ecb_cold
1914void
1139ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1140{ 1916{
1141 alloc = cb; 1917 alloc = cb;
1142} 1918}
1143 1919
1144inline_speed void * 1920inline_speed void *
… …
1171typedef struct 1947typedef struct
1172{ 1948{
1173 WL head; 1949 WL head;
1174 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1175 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) */
1176 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 */
1177 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1178#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1179 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1180#endif 1956#endif
1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1182 SOCKET handle; 1958 SOCKET handle;
… …
1236 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1237 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1238 2014
1239#else 2015#else
1240 2016
1241 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1242 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1243 #include "ev_vars.h" 2019 #include "ev_vars.h"
1244 #undef VAR 2020 #undef VAR
1245 2021
1246 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1247 2023
1248#endif 2024#endif
1249 2025
1250#if EV_FEATURE_API 2026#if EV_FEATURE_API
1251# 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)
1252# 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)
1253# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1254#else 2030#else
1255# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1256# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1257# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1261 2037
1262/*****************************************************************************/ 2038/*****************************************************************************/
1263 2039
1264#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1265ev_tstamp 2041ev_tstamp
1266ev_time (void) 2042ev_time (void) EV_NOEXCEPT
1267{ 2043{
1268#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1269 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1270 { 2046 {
1271 struct timespec ts; 2047 struct timespec ts;
1272 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1273 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1274 } 2050 }
1275#endif 2051#endif
1276 2052
2053 {
1277 struct timeval tv; 2054 struct timeval tv;
1278 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1279 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1280} 2058}
1281#endif 2059#endif
1282 2060
1283inline_size ev_tstamp 2061inline_size ev_tstamp
1284get_clock (void) 2062get_clock (void)
1285{ 2063{
1286#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1287 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1288 { 2066 {
1289 struct timespec ts; 2067 struct timespec ts;
1290 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1291 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1292 } 2070 }
1293#endif 2071#endif
1294 2072
1295 return ev_time (); 2073 return ev_time ();
1296} 2074}
1297 2075
1298#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1299ev_tstamp 2077ev_tstamp
1300ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
1301{ 2079{
1302 return ev_rt_now; 2080 return ev_rt_now;
1303} 2081}
1304#endif 2082#endif
1305 2083
1306void 2084void
1307ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1308{ 2086{
1309 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1310 { 2088 {
1311#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1312 struct timespec ts; 2090 struct timespec ts;
1313 2091
1314 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1315 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1316#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) */
1317 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1318#else 2098#else
1319 struct timeval tv; 2099 struct timeval tv;
1320 2100
1321 /* 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 */
1322 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1352 } 2132 }
1353 2133
1354 return ncur; 2134 return ncur;
1355} 2135}
1356 2136
1357static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1358array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1359{ 2140{
1360 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1361 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1362} 2143}
1363 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1364#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1365 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1366 2149
1367#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1368 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1369 { \ 2152 { \
1370 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1371 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1372 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1373 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1374 } 2157 }
1375 2158
1376#if 0 2159#if 0
1377#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1378 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1387 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
1388 2171
1389/*****************************************************************************/ 2172/*****************************************************************************/
1390 2173
1391/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1392static void noinline 2175ecb_noinline
2176static void
1393pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1394{ 2178{
1395} 2179}
1396 2180
1397void noinline 2181ecb_noinline
2182void
1398ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1399{ 2184{
1400 W w_ = (W)w; 2185 W w_ = (W)w;
1401 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1402 2187
1403 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1404 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1405 else 2190 else
1406 { 2191 {
1407 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1408 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1409 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1410 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1411 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
1412} 2199}
1413 2200
1414inline_speed void 2201inline_speed void
1415feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1416{ 2203{
1417 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1418 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1419} 2206}
1420 2207
1421inline_size void 2208inline_size void
1422feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1457inline_speed void 2244inline_speed void
1458fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1459{ 2246{
1460 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1461 2248
1462 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1463 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1464} 2251}
1465 2252
1466void 2253void
1467ev_feed_fd_event (EV_P_ int fd, int revents) 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1468{ 2255{
1469 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1470 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1471} 2258}
1472 2259
… …
1475inline_size void 2262inline_size void
1476fd_reify (EV_P) 2263fd_reify (EV_P)
1477{ 2264{
1478 int i; 2265 int i;
1479 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
1480#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1481 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
1482 { 2281 {
1483 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
1484 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
1485 2284
1486 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1500 } 2299 }
1501 } 2300 }
1502 } 2301 }
1503#endif 2302#endif
1504 2303
1505 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
1506 { 2305 {
1507 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
1508 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
1509 ev_io *w; 2308 ev_io *w;
1510 2309
1511 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
1513 2312
1514 anfd->reify = 0; 2313 anfd->reify = 0;
1515 2314
1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1517 { 2316 {
1518 anfd->events = 0; 2317 anfd->events = 0;
1519 2318
1520 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)
1521 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
1526 2325
1527 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
1528 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
1529 } 2328 }
1530 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
1531 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
1532} 2338}
1533 2339
1534/* something about the given fd changed */ 2340/* something about the given fd changed */
1535inline_size void 2341inline_size
2342void
1536fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
1537{ 2344{
1538 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
1539 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
1540 2347
1541 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
1542 { 2349 {
1543 ++fdchangecnt; 2350 ++fdchangecnt;
1544 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1545 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
1546 } 2353 }
1547} 2354}
1548 2355
1549/* 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 */
1550inline_speed void ecb_cold 2357inline_speed ecb_cold void
1551fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
1552{ 2359{
1553 ev_io *w; 2360 ev_io *w;
1554 2361
1555 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
1558 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);
1559 } 2366 }
1560} 2367}
1561 2368
1562/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
1563inline_size int ecb_cold 2370inline_size ecb_cold int
1564fd_valid (int fd) 2371fd_valid (int fd)
1565{ 2372{
1566#ifdef _WIN32 2373#ifdef _WIN32
1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1568#else 2375#else
1569 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
1570#endif 2377#endif
1571} 2378}
1572 2379
1573/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
1574static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
1575fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
1576{ 2384{
1577 int fd; 2385 int fd;
1578 2386
1579 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
1581 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
1582 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
1583} 2391}
1584 2392
1585/* 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 */
1586static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
1587fd_enomem (EV_P) 2396fd_enomem (EV_P)
1588{ 2397{
1589 int fd; 2398 int fd;
1590 2399
1591 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1595 break; 2404 break;
1596 } 2405 }
1597} 2406}
1598 2407
1599/* 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 */
1600static void noinline 2409ecb_noinline
2410static void
1601fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1602{ 2412{
1603 int fd; 2413 int fd;
1604 2414
1605 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
1658 ev_tstamp minat; 2468 ev_tstamp minat;
1659 ANHE *minpos; 2469 ANHE *minpos;
1660 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1661 2471
1662 /* find minimum child */ 2472 /* find minimum child */
1663 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
1664 { 2474 {
1665 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1666 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));
1667 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));
1668 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));
1669 } 2479 }
1670 else if (pos < E) 2480 else if (pos < E)
1671 { 2481 {
1672 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1673 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));
1674 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));
1675 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));
1676 } 2486 }
1677 else 2487 else
1678 break; 2488 break;
1679 2489
1680 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
1688 2498
1689 heap [k] = he; 2499 heap [k] = he;
1690 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
1691} 2501}
1692 2502
1693#else /* 4HEAP */ 2503#else /* not 4HEAP */
1694 2504
1695#define HEAP0 1 2505#define HEAP0 1
1696#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
1697#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
1698 2508
… …
1770 upheap (heap, i + HEAP0); 2580 upheap (heap, i + HEAP0);
1771} 2581}
1772 2582
1773/*****************************************************************************/ 2583/*****************************************************************************/
1774 2584
1775/* associate signal watchers to a signal signal */ 2585/* associate signal watchers to a signal */
1776typedef struct 2586typedef struct
1777{ 2587{
1778 EV_ATOMIC_T pending; 2588 EV_ATOMIC_T pending;
1779#if EV_MULTIPLICITY 2589#if EV_MULTIPLICITY
1780 EV_P; 2590 EV_P;
… …
1786 2596
1787/*****************************************************************************/ 2597/*****************************************************************************/
1788 2598
1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1790 2600
1791static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
1792evpipe_init (EV_P) 2603evpipe_init (EV_P)
1793{ 2604{
1794 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
1795 { 2606 {
2607 int fds [2];
2608
1796# if EV_USE_EVENTFD 2609# if EV_USE_EVENTFD
2610 fds [0] = -1;
1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2611 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1798 if (evfd < 0 && errno == EINVAL) 2612 if (fds [1] < 0 && errno == EINVAL)
1799 evfd = eventfd (0, 0); 2613 fds [1] = eventfd (0, 0);
1800 2614
1801 if (evfd >= 0) 2615 if (fds [1] < 0)
2616# endif
1802 { 2617 {
2618 while (pipe (fds))
2619 ev_syserr ("(libev) error creating signal/async pipe");
2620
2621 fd_intern (fds [0]);
2622 }
2623
1803 evpipe [0] = -1; 2624 evpipe [0] = fds [0];
1804 fd_intern (evfd); /* doing it twice doesn't hurt */ 2625
1805 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));
1806 } 2676 }
1807 else 2677 else
1808# endif 2678#endif
1809 { 2679 {
1810 while (pipe (evpipe)) 2680#ifdef _WIN32
1811 ev_syserr ("(libev) error creating signal/async pipe"); 2681 WSABUF buf;
1812 2682 DWORD sent;
1813 fd_intern (evpipe [0]); 2683 buf.buf = (char *)&buf;
1814 fd_intern (evpipe [1]); 2684 buf.len = 1;
1815 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1816 } 2686#else
1817
1818 ev_io_start (EV_A_ &pipe_w);
1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1820 }
1821}
1822
1823inline_speed void
1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1825{
1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1843 old_errno = errno; /* save errno because write will clobber it */
1844
1845#if EV_USE_EVENTFD
1846 if (evfd >= 0)
1847 {
1848 uint64_t counter = 1;
1849 write (evfd, &counter, sizeof (uint64_t));
1850 }
1851 else
1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1859 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2688#endif
1860 } 2689 }
1861 2690
1862 errno = old_errno; 2691 errno = old_errno;
1863 } 2692 }
1864} 2693}
… …
1871 int i; 2700 int i;
1872 2701
1873 if (revents & EV_READ) 2702 if (revents & EV_READ)
1874 { 2703 {
1875#if EV_USE_EVENTFD 2704#if EV_USE_EVENTFD
1876 if (evfd >= 0) 2705 if (evpipe [0] < 0)
1877 { 2706 {
1878 uint64_t counter; 2707 uint64_t counter;
1879 read (evfd, &counter, sizeof (uint64_t)); 2708 read (evpipe [1], &counter, sizeof (uint64_t));
1880 } 2709 }
1881 else 2710 else
1882#endif 2711#endif
1883 { 2712 {
1884 char dummy; 2713 char dummy[4];
1885 /* 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
1886 read (evpipe [0], &dummy, 1); 2722 read (evpipe [0], &dummy, sizeof (dummy));
2723#endif
1887 } 2724 }
1888 } 2725 }
1889 2726
1890 pipe_write_skipped = 0; 2727 pipe_write_skipped = 0;
2728
2729 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1891 2730
1892#if EV_SIGNAL_ENABLE 2731#if EV_SIGNAL_ENABLE
1893 if (sig_pending) 2732 if (sig_pending)
1894 { 2733 {
1895 sig_pending = 0; 2734 sig_pending = 0;
1896 2735
2736 ECB_MEMORY_FENCE;
2737
1897 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
1898 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
1899 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
1900 } 2741 }
1901#endif 2742#endif
1902 2743
1903#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1904 if (async_pending) 2745 if (async_pending)
1905 { 2746 {
1906 async_pending = 0; 2747 async_pending = 0;
2748
2749 ECB_MEMORY_FENCE;
1907 2750
1908 for (i = asynccnt; i--; ) 2751 for (i = asynccnt; i--; )
1909 if (asyncs [i]->sent) 2752 if (asyncs [i]->sent)
1910 { 2753 {
1911 asyncs [i]->sent = 0; 2754 asyncs [i]->sent = 0;
2755 ECB_MEMORY_FENCE_RELEASE;
1912 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2756 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1913 } 2757 }
1914 } 2758 }
1915#endif 2759#endif
1916} 2760}
1917 2761
1918/*****************************************************************************/ 2762/*****************************************************************************/
1919 2763
1920void 2764void
1921ev_feed_signal (int signum) 2765ev_feed_signal (int signum) EV_NOEXCEPT
1922{ 2766{
1923#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2768 EV_P;
2769 ECB_MEMORY_FENCE_ACQUIRE;
1924 EV_P = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
1925 2771
1926 if (!EV_A) 2772 if (!EV_A)
1927 return; 2773 return;
1928#endif 2774#endif
1929 2775
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1; 2776 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending); 2777 evpipe_write (EV_A_ &sig_pending);
1935} 2778}
1936 2779
1937static void 2780static void
… …
1942#endif 2785#endif
1943 2786
1944 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
1945} 2788}
1946 2789
1947void noinline 2790ecb_noinline
2791void
1948ev_feed_signal_event (EV_P_ int signum) 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1949{ 2793{
1950 WL w; 2794 WL w;
1951 2795
1952 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1953 return; 2797 return;
1954 2798
1955 --signum; 2799 --signum;
1956 2800
1957#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
1958 /* 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 */
1959 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
1960 2804
1961 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
1962 return; 2806 return;
1963#endif 2807#endif
1964 2808
1965 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2810 ECB_MEMORY_FENCE_RELEASE;
1966 2811
1967 for (w = signals [signum].head; w; w = w->next) 2812 for (w = signals [signum].head; w; w = w->next)
1968 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1969} 2814}
1970 2815
… …
2049 2894
2050#endif 2895#endif
2051 2896
2052/*****************************************************************************/ 2897/*****************************************************************************/
2053 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
2054#if EV_USE_IOCP 2951#if EV_USE_IOCP
2055# include "ev_iocp.c" 2952# include "ev_iocp.c"
2056#endif 2953#endif
2057#if EV_USE_PORT 2954#if EV_USE_PORT
2058# include "ev_port.c" 2955# include "ev_port.c"
… …
2061# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2062#endif 2959#endif
2063#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2064# include "ev_epoll.c" 2961# include "ev_epoll.c"
2065#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
2066#if EV_USE_POLL 2969#if EV_USE_POLL
2067# include "ev_poll.c" 2970# include "ev_poll.c"
2068#endif 2971#endif
2069#if EV_USE_SELECT 2972#if EV_USE_SELECT
2070# include "ev_select.c" 2973# include "ev_select.c"
2071#endif 2974#endif
2072 2975
2073int ecb_cold 2976ecb_cold int
2074ev_version_major (void) 2977ev_version_major (void) EV_NOEXCEPT
2075{ 2978{
2076 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
2077} 2980}
2078 2981
2079int ecb_cold 2982ecb_cold int
2080ev_version_minor (void) 2983ev_version_minor (void) EV_NOEXCEPT
2081{ 2984{
2082 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2083} 2986}
2084 2987
2085/* 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 */
2086int inline_size ecb_cold 2989inline_size ecb_cold int
2087enable_secure (void) 2990enable_secure (void)
2088{ 2991{
2089#ifdef _WIN32 2992#ifdef _WIN32
2090 return 0; 2993 return 0;
2091#else 2994#else
2092 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2093 || getgid () != getegid (); 2996 || getgid () != getegid ();
2094#endif 2997#endif
2095} 2998}
2096 2999
2097unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2098ev_supported_backends (void) 3002ev_supported_backends (void) EV_NOEXCEPT
2099{ 3003{
2100 unsigned int flags = 0; 3004 unsigned int flags = 0;
2101 3005
2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2103 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2104 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2105 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2107 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2108 return flags; 3014 return flags;
2109} 3015}
2110 3016
2111unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2112ev_recommended_backends (void) 3019ev_recommended_backends (void) EV_NOEXCEPT
2113{ 3020{
2114 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2115 3022
2116#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2117 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2125#endif 3032#endif
2126#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2127 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) */
2128#endif 3035#endif
2129 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
2130 return flags; 3046 return flags;
2131} 3047}
2132 3048
2133unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2134ev_embeddable_backends (void) 3051ev_embeddable_backends (void) EV_NOEXCEPT
2135{ 3052{
2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2137 3054
2138 /* 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 */
2139 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 */
2140 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2141 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
2142 return flags; 3061 return flags;
2143} 3062}
2144 3063
2145unsigned int 3064unsigned int
2146ev_backend (EV_P) 3065ev_backend (EV_P) EV_NOEXCEPT
2147{ 3066{
2148 return backend; 3067 return backend;
2149} 3068}
2150 3069
2151#if EV_FEATURE_API 3070#if EV_FEATURE_API
2152unsigned int 3071unsigned int
2153ev_iteration (EV_P) 3072ev_iteration (EV_P) EV_NOEXCEPT
2154{ 3073{
2155 return loop_count; 3074 return loop_count;
2156} 3075}
2157 3076
2158unsigned int 3077unsigned int
2159ev_depth (EV_P) 3078ev_depth (EV_P) EV_NOEXCEPT
2160{ 3079{
2161 return loop_depth; 3080 return loop_depth;
2162} 3081}
2163 3082
2164void 3083void
2165ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3084ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2166{ 3085{
2167 io_blocktime = interval; 3086 io_blocktime = interval;
2168} 3087}
2169 3088
2170void 3089void
2171ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3090ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2172{ 3091{
2173 timeout_blocktime = interval; 3092 timeout_blocktime = interval;
2174} 3093}
2175 3094
2176void 3095void
2177ev_set_userdata (EV_P_ void *data) 3096ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2178{ 3097{
2179 userdata = data; 3098 userdata = data;
2180} 3099}
2181 3100
2182void * 3101void *
2183ev_userdata (EV_P) 3102ev_userdata (EV_P) EV_NOEXCEPT
2184{ 3103{
2185 return userdata; 3104 return userdata;
2186} 3105}
2187 3106
2188void 3107void
2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3108ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2190{ 3109{
2191 invoke_cb = invoke_pending_cb; 3110 invoke_cb = invoke_pending_cb;
2192} 3111}
2193 3112
2194void 3113void
2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3114ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2196{ 3115{
2197 release_cb = release; 3116 release_cb = release;
2198 acquire_cb = acquire; 3117 acquire_cb = acquire;
2199} 3118}
2200#endif 3119#endif
2201 3120
2202/* initialise a loop structure, must be zero-initialised */ 3121/* initialise a loop structure, must be zero-initialised */
2203static void noinline ecb_cold 3122ecb_noinline ecb_cold
3123static void
2204loop_init (EV_P_ unsigned int flags) 3124loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2205{ 3125{
2206 if (!backend) 3126 if (!backend)
2207 { 3127 {
2208 origflags = flags; 3128 origflags = flags;
2209 3129
… …
2254#if EV_ASYNC_ENABLE 3174#if EV_ASYNC_ENABLE
2255 async_pending = 0; 3175 async_pending = 0;
2256#endif 3176#endif
2257 pipe_write_skipped = 0; 3177 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0; 3178 pipe_write_wanted = 0;
3179 evpipe [0] = -1;
3180 evpipe [1] = -1;
2259#if EV_USE_INOTIFY 3181#if EV_USE_INOTIFY
2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3182 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2261#endif 3183#endif
2262#if EV_USE_SIGNALFD 3184#if EV_USE_SIGNALFD
2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3185 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2264#endif 3186#endif
3187#if EV_USE_TIMERFD
3188 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3189#endif
2265 3190
2266 if (!(flags & EVBACKEND_MASK)) 3191 if (!(flags & EVBACKEND_MASK))
2267 flags |= ev_recommended_backends (); 3192 flags |= ev_recommended_backends ();
2268 3193
2269#if EV_USE_IOCP 3194#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3195 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif 3196#endif
2272#if EV_USE_PORT 3197#if EV_USE_PORT
2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3198 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2274#endif 3199#endif
2275#if EV_USE_KQUEUE 3200#if EV_USE_KQUEUE
2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3201 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3202#endif
3203#if EV_USE_IOURING
3204 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3205#endif
3206#if EV_USE_LINUXAIO
3207 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2277#endif 3208#endif
2278#if EV_USE_EPOLL 3209#if EV_USE_EPOLL
2279 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3210 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2280#endif 3211#endif
2281#if EV_USE_POLL 3212#if EV_USE_POLL
2282 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3213 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2283#endif 3214#endif
2284#if EV_USE_SELECT 3215#if EV_USE_SELECT
2285 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3216 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2286#endif 3217#endif
2287 3218
2288 ev_prepare_init (&pending_w, pendingcb); 3219 ev_prepare_init (&pending_w, pendingcb);
2289 3220
2290#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2293#endif 3224#endif
2294 } 3225 }
2295} 3226}
2296 3227
2297/* free up a loop structure */ 3228/* free up a loop structure */
2298void ecb_cold 3229ecb_cold
3230void
2299ev_loop_destroy (EV_P) 3231ev_loop_destroy (EV_P)
2300{ 3232{
2301 int i; 3233 int i;
2302 3234
2303#if EV_MULTIPLICITY 3235#if EV_MULTIPLICITY
… …
2306 return; 3238 return;
2307#endif 3239#endif
2308 3240
2309#if EV_CLEANUP_ENABLE 3241#if EV_CLEANUP_ENABLE
2310 /* queue cleanup watchers (and execute them) */ 3242 /* queue cleanup watchers (and execute them) */
2311 if (expect_false (cleanupcnt)) 3243 if (ecb_expect_false (cleanupcnt))
2312 { 3244 {
2313 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3245 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2314 EV_INVOKE_PENDING; 3246 EV_INVOKE_PENDING;
2315 } 3247 }
2316#endif 3248#endif
2317 3249
2318#if EV_CHILD_ENABLE 3250#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev)) 3251 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2320 { 3252 {
2321 ev_ref (EV_A); /* child watcher */ 3253 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev); 3254 ev_signal_stop (EV_A_ &childev);
2323 } 3255 }
2324#endif 3256#endif
… …
2326 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w))
2327 { 3259 {
2328 /*ev_ref (EV_A);*/ 3260 /*ev_ref (EV_A);*/
2329 /*ev_io_stop (EV_A_ &pipe_w);*/ 3261 /*ev_io_stop (EV_A_ &pipe_w);*/
2330 3262
2331#if EV_USE_EVENTFD
2332 if (evfd >= 0)
2333 close (evfd);
2334#endif
2335
2336 if (evpipe [0] >= 0)
2337 {
2338 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2339 EV_WIN32_CLOSE_FD (evpipe [1]); 3264 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2340 }
2341 } 3265 }
2342 3266
2343#if EV_USE_SIGNALFD 3267#if EV_USE_SIGNALFD
2344 if (ev_is_active (&sigfd_w)) 3268 if (ev_is_active (&sigfd_w))
2345 close (sigfd); 3269 close (sigfd);
2346#endif 3270#endif
2347 3271
3272#if EV_USE_TIMERFD
3273 if (ev_is_active (&timerfd_w))
3274 close (timerfd);
3275#endif
3276
2348#if EV_USE_INOTIFY 3277#if EV_USE_INOTIFY
2349 if (fs_fd >= 0) 3278 if (fs_fd >= 0)
2350 close (fs_fd); 3279 close (fs_fd);
2351#endif 3280#endif
2352 3281
2353 if (backend_fd >= 0) 3282 if (backend_fd >= 0)
2354 close (backend_fd); 3283 close (backend_fd);
2355 3284
2356#if EV_USE_IOCP 3285#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3286 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif 3287#endif
2359#if EV_USE_PORT 3288#if EV_USE_PORT
2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3289 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2361#endif 3290#endif
2362#if EV_USE_KQUEUE 3291#if EV_USE_KQUEUE
2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3292 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3293#endif
3294#if EV_USE_IOURING
3295 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3296#endif
3297#if EV_USE_LINUXAIO
3298 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2364#endif 3299#endif
2365#if EV_USE_EPOLL 3300#if EV_USE_EPOLL
2366 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3301 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2367#endif 3302#endif
2368#if EV_USE_POLL 3303#if EV_USE_POLL
2369 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3304 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2370#endif 3305#endif
2371#if EV_USE_SELECT 3306#if EV_USE_SELECT
2372 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3307 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2373#endif 3308#endif
2374 3309
2375 for (i = NUMPRI; i--; ) 3310 for (i = NUMPRI; i--; )
2376 { 3311 {
2377 array_free (pending, [i]); 3312 array_free (pending, [i]);
… …
2419 3354
2420inline_size void 3355inline_size void
2421loop_fork (EV_P) 3356loop_fork (EV_P)
2422{ 3357{
2423#if EV_USE_PORT 3358#if EV_USE_PORT
2424 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3359 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2425#endif 3360#endif
2426#if EV_USE_KQUEUE 3361#if EV_USE_KQUEUE
2427 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3362 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3363#endif
3364#if EV_USE_IOURING
3365 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3366#endif
3367#if EV_USE_LINUXAIO
3368 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2428#endif 3369#endif
2429#if EV_USE_EPOLL 3370#if EV_USE_EPOLL
2430 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3371 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2431#endif 3372#endif
2432#if EV_USE_INOTIFY 3373#if EV_USE_INOTIFY
2433 infy_fork (EV_A); 3374 infy_fork (EV_A);
2434#endif 3375#endif
2435 3376
3377 if (postfork != 2)
3378 {
3379 #if EV_USE_SIGNALFD
3380 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3381 #endif
3382
3383 #if EV_USE_TIMERFD
3384 if (ev_is_active (&timerfd_w))
3385 {
3386 ev_ref (EV_A);
3387 ev_io_stop (EV_A_ &timerfd_w);
3388
3389 close (timerfd);
3390 timerfd = -2;
3391
3392 evtimerfd_init (EV_A);
3393 /* reschedule periodics, in case we missed something */
3394 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3395 }
3396 #endif
3397
3398 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2436 if (ev_is_active (&pipe_w)) 3399 if (ev_is_active (&pipe_w))
2437 { 3400 {
2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2439 3402
2440 ev_ref (EV_A); 3403 ev_ref (EV_A);
2441 ev_io_stop (EV_A_ &pipe_w); 3404 ev_io_stop (EV_A_ &pipe_w);
2442 3405
2443#if EV_USE_EVENTFD
2444 if (evfd >= 0)
2445 close (evfd);
2446#endif
2447
2448 if (evpipe [0] >= 0) 3406 if (evpipe [0] >= 0)
2449 {
2450 EV_WIN32_CLOSE_FD (evpipe [0]); 3407 EV_WIN32_CLOSE_FD (evpipe [0]);
2451 EV_WIN32_CLOSE_FD (evpipe [1]); 3408
3409 evpipe_init (EV_A);
3410 /* iterate over everything, in case we missed something before */
3411 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2452 } 3412 }
2453 3413 #endif
2454#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2455 evpipe_init (EV_A);
2456 /* now iterate over everything, in case we missed something */
2457 pipecb (EV_A_ &pipe_w, EV_READ);
2458#endif
2459 } 3414 }
2460 3415
2461 postfork = 0; 3416 postfork = 0;
2462} 3417}
2463 3418
2464#if EV_MULTIPLICITY 3419#if EV_MULTIPLICITY
2465 3420
3421ecb_cold
2466struct ev_loop * ecb_cold 3422struct ev_loop *
2467ev_loop_new (unsigned int flags) 3423ev_loop_new (unsigned int flags) EV_NOEXCEPT
2468{ 3424{
2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3425 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2470 3426
2471 memset (EV_A, 0, sizeof (struct ev_loop)); 3427 memset (EV_A, 0, sizeof (struct ev_loop));
2472 loop_init (EV_A_ flags); 3428 loop_init (EV_A_ flags);
… …
2479} 3435}
2480 3436
2481#endif /* multiplicity */ 3437#endif /* multiplicity */
2482 3438
2483#if EV_VERIFY 3439#if EV_VERIFY
2484static void noinline ecb_cold 3440ecb_noinline ecb_cold
3441static void
2485verify_watcher (EV_P_ W w) 3442verify_watcher (EV_P_ W w)
2486{ 3443{
2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3444 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2488 3445
2489 if (w->pending) 3446 if (w->pending)
2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3447 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2491} 3448}
2492 3449
2493static void noinline ecb_cold 3450ecb_noinline ecb_cold
3451static void
2494verify_heap (EV_P_ ANHE *heap, int N) 3452verify_heap (EV_P_ ANHE *heap, int N)
2495{ 3453{
2496 int i; 3454 int i;
2497 3455
2498 for (i = HEAP0; i < N + HEAP0; ++i) 3456 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2503 3461
2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3462 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2505 } 3463 }
2506} 3464}
2507 3465
2508static void noinline ecb_cold 3466ecb_noinline ecb_cold
3467static void
2509array_verify (EV_P_ W *ws, int cnt) 3468array_verify (EV_P_ W *ws, int cnt)
2510{ 3469{
2511 while (cnt--) 3470 while (cnt--)
2512 { 3471 {
2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3472 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2516} 3475}
2517#endif 3476#endif
2518 3477
2519#if EV_FEATURE_API 3478#if EV_FEATURE_API
2520void ecb_cold 3479void ecb_cold
2521ev_verify (EV_P) 3480ev_verify (EV_P) EV_NOEXCEPT
2522{ 3481{
2523#if EV_VERIFY 3482#if EV_VERIFY
2524 int i; 3483 int i;
2525 WL w; 3484 WL w, w2;
2526 3485
2527 assert (activecnt >= -1); 3486 assert (activecnt >= -1);
2528 3487
2529 assert (fdchangemax >= fdchangecnt); 3488 assert (fdchangemax >= fdchangecnt);
2530 for (i = 0; i < fdchangecnt; ++i) 3489 for (i = 0; i < fdchangecnt; ++i)
2531 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3490 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2532 3491
2533 assert (anfdmax >= 0); 3492 assert (anfdmax >= 0);
2534 for (i = 0; i < anfdmax; ++i) 3493 for (i = 0; i < anfdmax; ++i)
3494 {
3495 int j = 0;
3496
2535 for (w = anfds [i].head; w; w = w->next) 3497 for (w = w2 = anfds [i].head; w; w = w->next)
2536 { 3498 {
2537 verify_watcher (EV_A_ (W)w); 3499 verify_watcher (EV_A_ (W)w);
3500
3501 if (j++ & 1)
3502 {
3503 assert (("libev: io watcher list contains a loop", w != w2));
3504 w2 = w2->next;
3505 }
3506
2538 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3507 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2539 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3508 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2540 } 3509 }
3510 }
2541 3511
2542 assert (timermax >= timercnt); 3512 assert (timermax >= timercnt);
2543 verify_heap (EV_A_ timers, timercnt); 3513 verify_heap (EV_A_ timers, timercnt);
2544 3514
2545#if EV_PERIODIC_ENABLE 3515#if EV_PERIODIC_ENABLE
… …
2591#endif 3561#endif
2592} 3562}
2593#endif 3563#endif
2594 3564
2595#if EV_MULTIPLICITY 3565#if EV_MULTIPLICITY
3566ecb_cold
2596struct ev_loop * ecb_cold 3567struct ev_loop *
2597#else 3568#else
2598int 3569int
2599#endif 3570#endif
2600ev_default_loop (unsigned int flags) 3571ev_default_loop (unsigned int flags) EV_NOEXCEPT
2601{ 3572{
2602 if (!ev_default_loop_ptr) 3573 if (!ev_default_loop_ptr)
2603 { 3574 {
2604#if EV_MULTIPLICITY 3575#if EV_MULTIPLICITY
2605 EV_P = ev_default_loop_ptr = &default_loop_struct; 3576 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2624 3595
2625 return ev_default_loop_ptr; 3596 return ev_default_loop_ptr;
2626} 3597}
2627 3598
2628void 3599void
2629ev_loop_fork (EV_P) 3600ev_loop_fork (EV_P) EV_NOEXCEPT
2630{ 3601{
2631 postfork = 1; /* must be in line with ev_default_fork */ 3602 postfork = 1;
2632} 3603}
2633 3604
2634/*****************************************************************************/ 3605/*****************************************************************************/
2635 3606
2636void 3607void
… …
2638{ 3609{
2639 EV_CB_INVOKE ((W)w, revents); 3610 EV_CB_INVOKE ((W)w, revents);
2640} 3611}
2641 3612
2642unsigned int 3613unsigned int
2643ev_pending_count (EV_P) 3614ev_pending_count (EV_P) EV_NOEXCEPT
2644{ 3615{
2645 int pri; 3616 int pri;
2646 unsigned int count = 0; 3617 unsigned int count = 0;
2647 3618
2648 for (pri = NUMPRI; pri--; ) 3619 for (pri = NUMPRI; pri--; )
2649 count += pendingcnt [pri]; 3620 count += pendingcnt [pri];
2650 3621
2651 return count; 3622 return count;
2652} 3623}
2653 3624
2654void noinline 3625ecb_noinline
3626void
2655ev_invoke_pending (EV_P) 3627ev_invoke_pending (EV_P)
2656{ 3628{
2657 int pri; 3629 pendingpri = NUMPRI;
2658 3630
2659 for (pri = NUMPRI; pri--; ) 3631 do
3632 {
3633 --pendingpri;
3634
3635 /* pendingpri possibly gets modified in the inner loop */
2660 while (pendingcnt [pri]) 3636 while (pendingcnt [pendingpri])
2661 { 3637 {
2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3638 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2663 3639
2664 p->w->pending = 0; 3640 p->w->pending = 0;
2665 EV_CB_INVOKE (p->w, p->events); 3641 EV_CB_INVOKE (p->w, p->events);
2666 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2667 } 3643 }
3644 }
3645 while (pendingpri);
2668} 3646}
2669 3647
2670#if EV_IDLE_ENABLE 3648#if EV_IDLE_ENABLE
2671/* make idle watchers pending. this handles the "call-idle */ 3649/* make idle watchers pending. this handles the "call-idle */
2672/* only when higher priorities are idle" logic */ 3650/* only when higher priorities are idle" logic */
2673inline_size void 3651inline_size void
2674idle_reify (EV_P) 3652idle_reify (EV_P)
2675{ 3653{
2676 if (expect_false (idleall)) 3654 if (ecb_expect_false (idleall))
2677 { 3655 {
2678 int pri; 3656 int pri;
2679 3657
2680 for (pri = NUMPRI; pri--; ) 3658 for (pri = NUMPRI; pri--; )
2681 { 3659 {
… …
2711 { 3689 {
2712 ev_at (w) += w->repeat; 3690 ev_at (w) += w->repeat;
2713 if (ev_at (w) < mn_now) 3691 if (ev_at (w) < mn_now)
2714 ev_at (w) = mn_now; 3692 ev_at (w) = mn_now;
2715 3693
2716 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3694 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2717 3695
2718 ANHE_at_cache (timers [HEAP0]); 3696 ANHE_at_cache (timers [HEAP0]);
2719 downheap (timers, timercnt, HEAP0); 3697 downheap (timers, timercnt, HEAP0);
2720 } 3698 }
2721 else 3699 else
… …
2730 } 3708 }
2731} 3709}
2732 3710
2733#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
2734 3712
2735static void noinline 3713ecb_noinline
3714static void
2736periodic_recalc (EV_P_ ev_periodic *w) 3715periodic_recalc (EV_P_ ev_periodic *w)
2737{ 3716{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3717 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3718 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740 3719
… …
2742 while (at <= ev_rt_now) 3721 while (at <= ev_rt_now)
2743 { 3722 {
2744 ev_tstamp nat = at + w->interval; 3723 ev_tstamp nat = at + w->interval;
2745 3724
2746 /* when resolution fails us, we use ev_rt_now */ 3725 /* when resolution fails us, we use ev_rt_now */
2747 if (expect_false (nat == at)) 3726 if (ecb_expect_false (nat == at))
2748 { 3727 {
2749 at = ev_rt_now; 3728 at = ev_rt_now;
2750 break; 3729 break;
2751 } 3730 }
2752 3731
… …
2762{ 3741{
2763 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2764 3743
2765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3744 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2766 { 3745 {
2767 int feed_count = 0;
2768
2769 do 3746 do
2770 { 3747 {
2771 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3748 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2772 3749
2773 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3750 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2800 } 3777 }
2801} 3778}
2802 3779
2803/* simply recalculate all periodics */ 3780/* simply recalculate all periodics */
2804/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3781/* TODO: maybe ensure that at least one event happens when jumping forward? */
2805static void noinline ecb_cold 3782ecb_noinline ecb_cold
3783static void
2806periodics_reschedule (EV_P) 3784periodics_reschedule (EV_P)
2807{ 3785{
2808 int i; 3786 int i;
2809 3787
2810 /* adjust periodics after time jump */ 3788 /* adjust periodics after time jump */
… …
2823 reheap (periodics, periodiccnt); 3801 reheap (periodics, periodiccnt);
2824} 3802}
2825#endif 3803#endif
2826 3804
2827/* adjust all timers by a given offset */ 3805/* adjust all timers by a given offset */
2828static void noinline ecb_cold 3806ecb_noinline ecb_cold
3807static void
2829timers_reschedule (EV_P_ ev_tstamp adjust) 3808timers_reschedule (EV_P_ ev_tstamp adjust)
2830{ 3809{
2831 int i; 3810 int i;
2832 3811
2833 for (i = 0; i < timercnt; ++i) 3812 for (i = 0; i < timercnt; ++i)
… …
2842/* also detect if there was a timejump, and act accordingly */ 3821/* also detect if there was a timejump, and act accordingly */
2843inline_speed void 3822inline_speed void
2844time_update (EV_P_ ev_tstamp max_block) 3823time_update (EV_P_ ev_tstamp max_block)
2845{ 3824{
2846#if EV_USE_MONOTONIC 3825#if EV_USE_MONOTONIC
2847 if (expect_true (have_monotonic)) 3826 if (ecb_expect_true (have_monotonic))
2848 { 3827 {
2849 int i; 3828 int i;
2850 ev_tstamp odiff = rtmn_diff; 3829 ev_tstamp odiff = rtmn_diff;
2851 3830
2852 mn_now = get_clock (); 3831 mn_now = get_clock ();
2853 3832
2854 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2855 /* interpolate in the meantime */ 3834 /* interpolate in the meantime */
2856 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3835 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2857 { 3836 {
2858 ev_rt_now = rtmn_diff + mn_now; 3837 ev_rt_now = rtmn_diff + mn_now;
2859 return; 3838 return;
2860 } 3839 }
2861 3840
… …
2875 ev_tstamp diff; 3854 ev_tstamp diff;
2876 rtmn_diff = ev_rt_now - mn_now; 3855 rtmn_diff = ev_rt_now - mn_now;
2877 3856
2878 diff = odiff - rtmn_diff; 3857 diff = odiff - rtmn_diff;
2879 3858
2880 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3859 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2881 return; /* all is well */ 3860 return; /* all is well */
2882 3861
2883 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
2884 mn_now = get_clock (); 3863 mn_now = get_clock ();
2885 now_floor = mn_now; 3864 now_floor = mn_now;
… …
2894 else 3873 else
2895#endif 3874#endif
2896 { 3875 {
2897 ev_rt_now = ev_time (); 3876 ev_rt_now = ev_time ();
2898 3877
2899 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3878 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2900 { 3879 {
2901 /* adjust timers. this is easy, as the offset is the same for all of them */ 3880 /* adjust timers. this is easy, as the offset is the same for all of them */
2902 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3881 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2903#if EV_PERIODIC_ENABLE 3882#if EV_PERIODIC_ENABLE
2904 periodics_reschedule (EV_A); 3883 periodics_reschedule (EV_A);
… …
2907 3886
2908 mn_now = ev_rt_now; 3887 mn_now = ev_rt_now;
2909 } 3888 }
2910} 3889}
2911 3890
2912void 3891int
2913ev_run (EV_P_ int flags) 3892ev_run (EV_P_ int flags)
2914{ 3893{
2915#if EV_FEATURE_API 3894#if EV_FEATURE_API
2916 ++loop_depth; 3895 ++loop_depth;
2917#endif 3896#endif
… …
2927#if EV_VERIFY >= 2 3906#if EV_VERIFY >= 2
2928 ev_verify (EV_A); 3907 ev_verify (EV_A);
2929#endif 3908#endif
2930 3909
2931#ifndef _WIN32 3910#ifndef _WIN32
2932 if (expect_false (curpid)) /* penalise the forking check even more */ 3911 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2933 if (expect_false (getpid () != curpid)) 3912 if (ecb_expect_false (getpid () != curpid))
2934 { 3913 {
2935 curpid = getpid (); 3914 curpid = getpid ();
2936 postfork = 1; 3915 postfork = 1;
2937 } 3916 }
2938#endif 3917#endif
2939 3918
2940#if EV_FORK_ENABLE 3919#if EV_FORK_ENABLE
2941 /* we might have forked, so queue fork handlers */ 3920 /* we might have forked, so queue fork handlers */
2942 if (expect_false (postfork)) 3921 if (ecb_expect_false (postfork))
2943 if (forkcnt) 3922 if (forkcnt)
2944 { 3923 {
2945 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3924 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2946 EV_INVOKE_PENDING; 3925 EV_INVOKE_PENDING;
2947 } 3926 }
2948#endif 3927#endif
2949 3928
2950#if EV_PREPARE_ENABLE 3929#if EV_PREPARE_ENABLE
2951 /* queue prepare watchers (and execute them) */ 3930 /* queue prepare watchers (and execute them) */
2952 if (expect_false (preparecnt)) 3931 if (ecb_expect_false (preparecnt))
2953 { 3932 {
2954 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3933 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2955 EV_INVOKE_PENDING; 3934 EV_INVOKE_PENDING;
2956 } 3935 }
2957#endif 3936#endif
2958 3937
2959 if (expect_false (loop_done)) 3938 if (ecb_expect_false (loop_done))
2960 break; 3939 break;
2961 3940
2962 /* we might have forked, so reify kernel state if necessary */ 3941 /* we might have forked, so reify kernel state if necessary */
2963 if (expect_false (postfork)) 3942 if (ecb_expect_false (postfork))
2964 loop_fork (EV_A); 3943 loop_fork (EV_A);
2965 3944
2966 /* update fd-related kernel structures */ 3945 /* update fd-related kernel structures */
2967 fd_reify (EV_A); 3946 fd_reify (EV_A);
2968 3947
… …
2973 3952
2974 /* remember old timestamp for io_blocktime calculation */ 3953 /* remember old timestamp for io_blocktime calculation */
2975 ev_tstamp prev_mn_now = mn_now; 3954 ev_tstamp prev_mn_now = mn_now;
2976 3955
2977 /* update time to cancel out callback processing overhead */ 3956 /* update time to cancel out callback processing overhead */
2978 time_update (EV_A_ 1e100); 3957 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2979 3958
2980 /* from now on, we want a pipe-wake-up */ 3959 /* from now on, we want a pipe-wake-up */
2981 pipe_write_wanted = 1; 3960 pipe_write_wanted = 1;
2982 3961
2983 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3962 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2984 3963
2985 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3964 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2986 { 3965 {
2987 waittime = MAX_BLOCKTIME; 3966 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2988 3967
2989 if (timercnt) 3968 if (timercnt)
2990 { 3969 {
2991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3970 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2992 if (waittime > to) waittime = to; 3971 if (waittime > to) waittime = to;
… …
2999 if (waittime > to) waittime = to; 3978 if (waittime > to) waittime = to;
3000 } 3979 }
3001#endif 3980#endif
3002 3981
3003 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3982 /* don't let timeouts decrease the waittime below timeout_blocktime */
3004 if (expect_false (waittime < timeout_blocktime)) 3983 if (ecb_expect_false (waittime < timeout_blocktime))
3005 waittime = timeout_blocktime; 3984 waittime = timeout_blocktime;
3006 3985
3007 /* at this point, we NEED to wait, so we have to ensure */ 3986 /* now there are two more special cases left, either we have
3008 /* to pass a minimum nonzero value to the backend */ 3987 * already-expired timers, so we should not sleep, or we have timers
3988 * that expire very soon, in which case we need to wait for a minimum
3989 * amount of time for some event loop backends.
3990 */
3009 if (expect_false (waittime < backend_mintime)) 3991 if (ecb_expect_false (waittime < backend_mintime))
3992 waittime = waittime <= EV_TS_CONST (0.)
3993 ? EV_TS_CONST (0.)
3010 waittime = backend_mintime; 3994 : backend_mintime;
3011 3995
3012 /* extra check because io_blocktime is commonly 0 */ 3996 /* extra check because io_blocktime is commonly 0 */
3013 if (expect_false (io_blocktime)) 3997 if (ecb_expect_false (io_blocktime))
3014 { 3998 {
3015 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3999 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3016 4000
3017 if (sleeptime > waittime - backend_mintime) 4001 if (sleeptime > waittime - backend_mintime)
3018 sleeptime = waittime - backend_mintime; 4002 sleeptime = waittime - backend_mintime;
3019 4003
3020 if (expect_true (sleeptime > 0.)) 4004 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3021 { 4005 {
3022 ev_sleep (sleeptime); 4006 ev_sleep (sleeptime);
3023 waittime -= sleeptime; 4007 waittime -= sleeptime;
3024 } 4008 }
3025 } 4009 }
… …
3032 backend_poll (EV_A_ waittime); 4016 backend_poll (EV_A_ waittime);
3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4017 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034 4018
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 4019 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036 4020
4021 ECB_MEMORY_FENCE_ACQUIRE;
3037 if (pipe_write_skipped) 4022 if (pipe_write_skipped)
3038 { 4023 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4024 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4025 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 } 4026 }
3042 4027
3043
3044 /* update ev_rt_now, do magic */ 4028 /* update ev_rt_now, do magic */
3045 time_update (EV_A_ waittime + sleeptime); 4029 time_update (EV_A_ waittime + sleeptime);
3046 } 4030 }
3047 4031
3048 /* queue pending timers and reschedule them */ 4032 /* queue pending timers and reschedule them */
… …
3056 idle_reify (EV_A); 4040 idle_reify (EV_A);
3057#endif 4041#endif
3058 4042
3059#if EV_CHECK_ENABLE 4043#if EV_CHECK_ENABLE
3060 /* queue check watchers, to be executed first */ 4044 /* queue check watchers, to be executed first */
3061 if (expect_false (checkcnt)) 4045 if (ecb_expect_false (checkcnt))
3062 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4046 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3063#endif 4047#endif
3064 4048
3065 EV_INVOKE_PENDING; 4049 EV_INVOKE_PENDING;
3066 } 4050 }
3067 while (expect_true ( 4051 while (ecb_expect_true (
3068 activecnt 4052 activecnt
3069 && !loop_done 4053 && !loop_done
3070 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4054 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3071 )); 4055 ));
3072 4056
… …
3074 loop_done = EVBREAK_CANCEL; 4058 loop_done = EVBREAK_CANCEL;
3075 4059
3076#if EV_FEATURE_API 4060#if EV_FEATURE_API
3077 --loop_depth; 4061 --loop_depth;
3078#endif 4062#endif
3079}
3080 4063
4064 return activecnt;
4065}
4066
3081void 4067void
3082ev_break (EV_P_ int how) 4068ev_break (EV_P_ int how) EV_NOEXCEPT
3083{ 4069{
3084 loop_done = how; 4070 loop_done = how;
3085} 4071}
3086 4072
3087void 4073void
3088ev_ref (EV_P) 4074ev_ref (EV_P) EV_NOEXCEPT
3089{ 4075{
3090 ++activecnt; 4076 ++activecnt;
3091} 4077}
3092 4078
3093void 4079void
3094ev_unref (EV_P) 4080ev_unref (EV_P) EV_NOEXCEPT
3095{ 4081{
3096 --activecnt; 4082 --activecnt;
3097} 4083}
3098 4084
3099void 4085void
3100ev_now_update (EV_P) 4086ev_now_update (EV_P) EV_NOEXCEPT
3101{ 4087{
3102 time_update (EV_A_ 1e100); 4088 time_update (EV_A_ EV_TSTAMP_HUGE);
3103} 4089}
3104 4090
3105void 4091void
3106ev_suspend (EV_P) 4092ev_suspend (EV_P) EV_NOEXCEPT
3107{ 4093{
3108 ev_now_update (EV_A); 4094 ev_now_update (EV_A);
3109} 4095}
3110 4096
3111void 4097void
3112ev_resume (EV_P) 4098ev_resume (EV_P) EV_NOEXCEPT
3113{ 4099{
3114 ev_tstamp mn_prev = mn_now; 4100 ev_tstamp mn_prev = mn_now;
3115 4101
3116 ev_now_update (EV_A); 4102 ev_now_update (EV_A);
3117 timers_reschedule (EV_A_ mn_now - mn_prev); 4103 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3134inline_size void 4120inline_size void
3135wlist_del (WL *head, WL elem) 4121wlist_del (WL *head, WL elem)
3136{ 4122{
3137 while (*head) 4123 while (*head)
3138 { 4124 {
3139 if (expect_true (*head == elem)) 4125 if (ecb_expect_true (*head == elem))
3140 { 4126 {
3141 *head = elem->next; 4127 *head = elem->next;
3142 break; 4128 break;
3143 } 4129 }
3144 4130
… …
3156 w->pending = 0; 4142 w->pending = 0;
3157 } 4143 }
3158} 4144}
3159 4145
3160int 4146int
3161ev_clear_pending (EV_P_ void *w) 4147ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3162{ 4148{
3163 W w_ = (W)w; 4149 W w_ = (W)w;
3164 int pending = w_->pending; 4150 int pending = w_->pending;
3165 4151
3166 if (expect_true (pending)) 4152 if (ecb_expect_true (pending))
3167 { 4153 {
3168 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4154 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3169 p->w = (W)&pending_w; 4155 p->w = (W)&pending_w;
3170 w_->pending = 0; 4156 w_->pending = 0;
3171 return p->events; 4157 return p->events;
… …
3198 w->active = 0; 4184 w->active = 0;
3199} 4185}
3200 4186
3201/*****************************************************************************/ 4187/*****************************************************************************/
3202 4188
3203void noinline 4189ecb_noinline
4190void
3204ev_io_start (EV_P_ ev_io *w) 4191ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3205{ 4192{
3206 int fd = w->fd; 4193 int fd = w->fd;
3207 4194
3208 if (expect_false (ev_is_active (w))) 4195 if (ecb_expect_false (ev_is_active (w)))
3209 return; 4196 return;
3210 4197
3211 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4198 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3212 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4199 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3213 4200
4201#if EV_VERIFY >= 2
4202 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4203#endif
3214 EV_FREQUENT_CHECK; 4204 EV_FREQUENT_CHECK;
3215 4205
3216 ev_start (EV_A_ (W)w, 1); 4206 ev_start (EV_A_ (W)w, 1);
3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4207 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3218 wlist_add (&anfds[fd].head, (WL)w); 4208 wlist_add (&anfds[fd].head, (WL)w);
4209
4210 /* common bug, apparently */
4211 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3219 4212
3220 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4213 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3221 w->events &= ~EV__IOFDSET; 4214 w->events &= ~EV__IOFDSET;
3222 4215
3223 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3224} 4217}
3225 4218
3226void noinline 4219ecb_noinline
4220void
3227ev_io_stop (EV_P_ ev_io *w) 4221ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3228{ 4222{
3229 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3230 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
3231 return; 4225 return;
3232 4226
3233 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4227 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3234 4228
4229#if EV_VERIFY >= 2
4230 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4231#endif
3235 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3236 4233
3237 wlist_del (&anfds[w->fd].head, (WL)w); 4234 wlist_del (&anfds[w->fd].head, (WL)w);
3238 ev_stop (EV_A_ (W)w); 4235 ev_stop (EV_A_ (W)w);
3239 4236
3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4237 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3241 4238
3242 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
3243} 4240}
3244 4241
3245void noinline 4242ecb_noinline
4243void
3246ev_timer_start (EV_P_ ev_timer *w) 4244ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3247{ 4245{
3248 if (expect_false (ev_is_active (w))) 4246 if (ecb_expect_false (ev_is_active (w)))
3249 return; 4247 return;
3250 4248
3251 ev_at (w) += mn_now; 4249 ev_at (w) += mn_now;
3252 4250
3253 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4251 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3254 4252
3255 EV_FREQUENT_CHECK; 4253 EV_FREQUENT_CHECK;
3256 4254
3257 ++timercnt; 4255 ++timercnt;
3258 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4256 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3259 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4257 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3260 ANHE_w (timers [ev_active (w)]) = (WT)w; 4258 ANHE_w (timers [ev_active (w)]) = (WT)w;
3261 ANHE_at_cache (timers [ev_active (w)]); 4259 ANHE_at_cache (timers [ev_active (w)]);
3262 upheap (timers, ev_active (w)); 4260 upheap (timers, ev_active (w));
3263 4261
3264 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
3265 4263
3266 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4264 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3267} 4265}
3268 4266
3269void noinline 4267ecb_noinline
4268void
3270ev_timer_stop (EV_P_ ev_timer *w) 4269ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3271{ 4270{
3272 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3273 if (expect_false (!ev_is_active (w))) 4272 if (ecb_expect_false (!ev_is_active (w)))
3274 return; 4273 return;
3275 4274
3276 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3277 4276
3278 { 4277 {
… …
3280 4279
3281 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4280 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3282 4281
3283 --timercnt; 4282 --timercnt;
3284 4283
3285 if (expect_true (active < timercnt + HEAP0)) 4284 if (ecb_expect_true (active < timercnt + HEAP0))
3286 { 4285 {
3287 timers [active] = timers [timercnt + HEAP0]; 4286 timers [active] = timers [timercnt + HEAP0];
3288 adjustheap (timers, timercnt, active); 4287 adjustheap (timers, timercnt, active);
3289 } 4288 }
3290 } 4289 }
… …
3294 ev_stop (EV_A_ (W)w); 4293 ev_stop (EV_A_ (W)w);
3295 4294
3296 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3297} 4296}
3298 4297
3299void noinline 4298ecb_noinline
4299void
3300ev_timer_again (EV_P_ ev_timer *w) 4300ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3301{ 4301{
3302 EV_FREQUENT_CHECK; 4302 EV_FREQUENT_CHECK;
3303 4303
3304 clear_pending (EV_A_ w); 4304 clear_pending (EV_A_ (W)w);
3305 4305
3306 if (ev_is_active (w)) 4306 if (ev_is_active (w))
3307 { 4307 {
3308 if (w->repeat) 4308 if (w->repeat)
3309 { 4309 {
… …
3322 4322
3323 EV_FREQUENT_CHECK; 4323 EV_FREQUENT_CHECK;
3324} 4324}
3325 4325
3326ev_tstamp 4326ev_tstamp
3327ev_timer_remaining (EV_P_ ev_timer *w) 4327ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3328{ 4328{
3329 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4329 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3330} 4330}
3331 4331
3332#if EV_PERIODIC_ENABLE 4332#if EV_PERIODIC_ENABLE
3333void noinline 4333ecb_noinline
4334void
3334ev_periodic_start (EV_P_ ev_periodic *w) 4335ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3335{ 4336{
3336 if (expect_false (ev_is_active (w))) 4337 if (ecb_expect_false (ev_is_active (w)))
3337 return; 4338 return;
4339
4340#if EV_USE_TIMERFD
4341 if (timerfd == -2)
4342 evtimerfd_init (EV_A);
4343#endif
3338 4344
3339 if (w->reschedule_cb) 4345 if (w->reschedule_cb)
3340 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4346 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3341 else if (w->interval) 4347 else if (w->interval)
3342 { 4348 {
… …
3348 4354
3349 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3350 4356
3351 ++periodiccnt; 4357 ++periodiccnt;
3352 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4358 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3353 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4359 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3354 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4360 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3355 ANHE_at_cache (periodics [ev_active (w)]); 4361 ANHE_at_cache (periodics [ev_active (w)]);
3356 upheap (periodics, ev_active (w)); 4362 upheap (periodics, ev_active (w));
3357 4363
3358 EV_FREQUENT_CHECK; 4364 EV_FREQUENT_CHECK;
3359 4365
3360 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4366 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3361} 4367}
3362 4368
3363void noinline 4369ecb_noinline
4370void
3364ev_periodic_stop (EV_P_ ev_periodic *w) 4371ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3365{ 4372{
3366 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
3367 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
3368 return; 4375 return;
3369 4376
3370 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3371 4378
3372 { 4379 {
… …
3374 4381
3375 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4382 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3376 4383
3377 --periodiccnt; 4384 --periodiccnt;
3378 4385
3379 if (expect_true (active < periodiccnt + HEAP0)) 4386 if (ecb_expect_true (active < periodiccnt + HEAP0))
3380 { 4387 {
3381 periodics [active] = periodics [periodiccnt + HEAP0]; 4388 periodics [active] = periodics [periodiccnt + HEAP0];
3382 adjustheap (periodics, periodiccnt, active); 4389 adjustheap (periodics, periodiccnt, active);
3383 } 4390 }
3384 } 4391 }
… …
3386 ev_stop (EV_A_ (W)w); 4393 ev_stop (EV_A_ (W)w);
3387 4394
3388 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
3389} 4396}
3390 4397
3391void noinline 4398ecb_noinline
4399void
3392ev_periodic_again (EV_P_ ev_periodic *w) 4400ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3393{ 4401{
3394 /* TODO: use adjustheap and recalculation */ 4402 /* TODO: use adjustheap and recalculation */
3395 ev_periodic_stop (EV_A_ w); 4403 ev_periodic_stop (EV_A_ w);
3396 ev_periodic_start (EV_A_ w); 4404 ev_periodic_start (EV_A_ w);
3397} 4405}
… …
3401# define SA_RESTART 0 4409# define SA_RESTART 0
3402#endif 4410#endif
3403 4411
3404#if EV_SIGNAL_ENABLE 4412#if EV_SIGNAL_ENABLE
3405 4413
3406void noinline 4414ecb_noinline
4415void
3407ev_signal_start (EV_P_ ev_signal *w) 4416ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3408{ 4417{
3409 if (expect_false (ev_is_active (w))) 4418 if (ecb_expect_false (ev_is_active (w)))
3410 return; 4419 return;
3411 4420
3412 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4421 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3413 4422
3414#if EV_MULTIPLICITY 4423#if EV_MULTIPLICITY
3415 assert (("libev: a signal must not be attached to two different loops", 4424 assert (("libev: a signal must not be attached to two different loops",
3416 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4425 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3417 4426
3418 signals [w->signum - 1].loop = EV_A; 4427 signals [w->signum - 1].loop = EV_A;
4428 ECB_MEMORY_FENCE_RELEASE;
3419#endif 4429#endif
3420 4430
3421 EV_FREQUENT_CHECK; 4431 EV_FREQUENT_CHECK;
3422 4432
3423#if EV_USE_SIGNALFD 4433#if EV_USE_SIGNALFD
… …
3482 } 4492 }
3483 4493
3484 EV_FREQUENT_CHECK; 4494 EV_FREQUENT_CHECK;
3485} 4495}
3486 4496
3487void noinline 4497ecb_noinline
4498void
3488ev_signal_stop (EV_P_ ev_signal *w) 4499ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3489{ 4500{
3490 clear_pending (EV_A_ (W)w); 4501 clear_pending (EV_A_ (W)w);
3491 if (expect_false (!ev_is_active (w))) 4502 if (ecb_expect_false (!ev_is_active (w)))
3492 return; 4503 return;
3493 4504
3494 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3495 4506
3496 wlist_del (&signals [w->signum - 1].head, (WL)w); 4507 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3524#endif 4535#endif
3525 4536
3526#if EV_CHILD_ENABLE 4537#if EV_CHILD_ENABLE
3527 4538
3528void 4539void
3529ev_child_start (EV_P_ ev_child *w) 4540ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3530{ 4541{
3531#if EV_MULTIPLICITY 4542#if EV_MULTIPLICITY
3532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4543 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3533#endif 4544#endif
3534 if (expect_false (ev_is_active (w))) 4545 if (ecb_expect_false (ev_is_active (w)))
3535 return; 4546 return;
3536 4547
3537 EV_FREQUENT_CHECK; 4548 EV_FREQUENT_CHECK;
3538 4549
3539 ev_start (EV_A_ (W)w, 1); 4550 ev_start (EV_A_ (W)w, 1);
… …
3541 4552
3542 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
3543} 4554}
3544 4555
3545void 4556void
3546ev_child_stop (EV_P_ ev_child *w) 4557ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3547{ 4558{
3548 clear_pending (EV_A_ (W)w); 4559 clear_pending (EV_A_ (W)w);
3549 if (expect_false (!ev_is_active (w))) 4560 if (ecb_expect_false (!ev_is_active (w)))
3550 return; 4561 return;
3551 4562
3552 EV_FREQUENT_CHECK; 4563 EV_FREQUENT_CHECK;
3553 4564
3554 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4565 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3568 4579
3569#define DEF_STAT_INTERVAL 5.0074891 4580#define DEF_STAT_INTERVAL 5.0074891
3570#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4581#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3571#define MIN_STAT_INTERVAL 0.1074891 4582#define MIN_STAT_INTERVAL 0.1074891
3572 4583
3573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4584ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3574 4585
3575#if EV_USE_INOTIFY 4586#if EV_USE_INOTIFY
3576 4587
3577/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4588/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3578# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4589# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3579 4590
3580static void noinline 4591ecb_noinline
4592static void
3581infy_add (EV_P_ ev_stat *w) 4593infy_add (EV_P_ ev_stat *w)
3582{ 4594{
3583 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4595 w->wd = inotify_add_watch (fs_fd, w->path,
4596 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4597 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4598 | IN_DONT_FOLLOW | IN_MASK_ADD);
3584 4599
3585 if (w->wd >= 0) 4600 if (w->wd >= 0)
3586 { 4601 {
3587 struct statfs sfs; 4602 struct statfs sfs;
3588 4603
… …
3592 4607
3593 if (!fs_2625) 4608 if (!fs_2625)
3594 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4609 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3595 else if (!statfs (w->path, &sfs) 4610 else if (!statfs (w->path, &sfs)
3596 && (sfs.f_type == 0x1373 /* devfs */ 4611 && (sfs.f_type == 0x1373 /* devfs */
4612 || sfs.f_type == 0x4006 /* fat */
4613 || sfs.f_type == 0x4d44 /* msdos */
3597 || sfs.f_type == 0xEF53 /* ext2/3 */ 4614 || sfs.f_type == 0xEF53 /* ext2/3 */
4615 || sfs.f_type == 0x72b6 /* jffs2 */
4616 || sfs.f_type == 0x858458f6 /* ramfs */
4617 || sfs.f_type == 0x5346544e /* ntfs */
3598 || sfs.f_type == 0x3153464a /* jfs */ 4618 || sfs.f_type == 0x3153464a /* jfs */
4619 || sfs.f_type == 0x9123683e /* btrfs */
3599 || sfs.f_type == 0x52654973 /* reiser3 */ 4620 || sfs.f_type == 0x52654973 /* reiser3 */
3600 || sfs.f_type == 0x01021994 /* tempfs */ 4621 || sfs.f_type == 0x01021994 /* tmpfs */
3601 || sfs.f_type == 0x58465342 /* xfs */)) 4622 || sfs.f_type == 0x58465342 /* xfs */))
3602 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3603 else 4624 else
3604 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3605 } 4626 }
… …
3640 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4661 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3641 ev_timer_again (EV_A_ &w->timer); 4662 ev_timer_again (EV_A_ &w->timer);
3642 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3643} 4664}
3644 4665
3645static void noinline 4666ecb_noinline
4667static void
3646infy_del (EV_P_ ev_stat *w) 4668infy_del (EV_P_ ev_stat *w)
3647{ 4669{
3648 int slot; 4670 int slot;
3649 int wd = w->wd; 4671 int wd = w->wd;
3650 4672
… …
3657 4679
3658 /* remove this watcher, if others are watching it, they will rearm */ 4680 /* remove this watcher, if others are watching it, they will rearm */
3659 inotify_rm_watch (fs_fd, wd); 4681 inotify_rm_watch (fs_fd, wd);
3660} 4682}
3661 4683
3662static void noinline 4684ecb_noinline
4685static void
3663infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3664{ 4687{
3665 if (slot < 0) 4688 if (slot < 0)
3666 /* overflow, need to check for all hash slots */ 4689 /* overflow, need to check for all hash slots */
3667 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3703 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3704 ofs += sizeof (struct inotify_event) + ev->len; 4727 ofs += sizeof (struct inotify_event) + ev->len;
3705 } 4728 }
3706} 4729}
3707 4730
3708inline_size void ecb_cold 4731inline_size ecb_cold
4732void
3709ev_check_2625 (EV_P) 4733ev_check_2625 (EV_P)
3710{ 4734{
3711 /* kernels < 2.6.25 are borked 4735 /* kernels < 2.6.25 are borked
3712 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4736 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3713 */ 4737 */
… …
3718} 4742}
3719 4743
3720inline_size int 4744inline_size int
3721infy_newfd (void) 4745infy_newfd (void)
3722{ 4746{
3723#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4747#if defined IN_CLOEXEC && defined IN_NONBLOCK
3724 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4748 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3725 if (fd >= 0) 4749 if (fd >= 0)
3726 return fd; 4750 return fd;
3727#endif 4751#endif
3728 return inotify_init (); 4752 return inotify_init ();
… …
3803#else 4827#else
3804# define EV_LSTAT(p,b) lstat (p, b) 4828# define EV_LSTAT(p,b) lstat (p, b)
3805#endif 4829#endif
3806 4830
3807void 4831void
3808ev_stat_stat (EV_P_ ev_stat *w) 4832ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3809{ 4833{
3810 if (lstat (w->path, &w->attr) < 0) 4834 if (lstat (w->path, &w->attr) < 0)
3811 w->attr.st_nlink = 0; 4835 w->attr.st_nlink = 0;
3812 else if (!w->attr.st_nlink) 4836 else if (!w->attr.st_nlink)
3813 w->attr.st_nlink = 1; 4837 w->attr.st_nlink = 1;
3814} 4838}
3815 4839
3816static void noinline 4840ecb_noinline
4841static void
3817stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4842stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3818{ 4843{
3819 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4844 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3820 4845
3821 ev_statdata prev = w->attr; 4846 ev_statdata prev = w->attr;
… …
3852 ev_feed_event (EV_A_ w, EV_STAT); 4877 ev_feed_event (EV_A_ w, EV_STAT);
3853 } 4878 }
3854} 4879}
3855 4880
3856void 4881void
3857ev_stat_start (EV_P_ ev_stat *w) 4882ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3858{ 4883{
3859 if (expect_false (ev_is_active (w))) 4884 if (ecb_expect_false (ev_is_active (w)))
3860 return; 4885 return;
3861 4886
3862 ev_stat_stat (EV_A_ w); 4887 ev_stat_stat (EV_A_ w);
3863 4888
3864 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4889 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3883 4908
3884 EV_FREQUENT_CHECK; 4909 EV_FREQUENT_CHECK;
3885} 4910}
3886 4911
3887void 4912void
3888ev_stat_stop (EV_P_ ev_stat *w) 4913ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3889{ 4914{
3890 clear_pending (EV_A_ (W)w); 4915 clear_pending (EV_A_ (W)w);
3891 if (expect_false (!ev_is_active (w))) 4916 if (ecb_expect_false (!ev_is_active (w)))
3892 return; 4917 return;
3893 4918
3894 EV_FREQUENT_CHECK; 4919 EV_FREQUENT_CHECK;
3895 4920
3896#if EV_USE_INOTIFY 4921#if EV_USE_INOTIFY
… …
3909} 4934}
3910#endif 4935#endif
3911 4936
3912#if EV_IDLE_ENABLE 4937#if EV_IDLE_ENABLE
3913void 4938void
3914ev_idle_start (EV_P_ ev_idle *w) 4939ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3915{ 4940{
3916 if (expect_false (ev_is_active (w))) 4941 if (ecb_expect_false (ev_is_active (w)))
3917 return; 4942 return;
3918 4943
3919 pri_adjust (EV_A_ (W)w); 4944 pri_adjust (EV_A_ (W)w);
3920 4945
3921 EV_FREQUENT_CHECK; 4946 EV_FREQUENT_CHECK;
… …
3924 int active = ++idlecnt [ABSPRI (w)]; 4949 int active = ++idlecnt [ABSPRI (w)];
3925 4950
3926 ++idleall; 4951 ++idleall;
3927 ev_start (EV_A_ (W)w, active); 4952 ev_start (EV_A_ (W)w, active);
3928 4953
3929 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4954 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3930 idles [ABSPRI (w)][active - 1] = w; 4955 idles [ABSPRI (w)][active - 1] = w;
3931 } 4956 }
3932 4957
3933 EV_FREQUENT_CHECK; 4958 EV_FREQUENT_CHECK;
3934} 4959}
3935 4960
3936void 4961void
3937ev_idle_stop (EV_P_ ev_idle *w) 4962ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3938{ 4963{
3939 clear_pending (EV_A_ (W)w); 4964 clear_pending (EV_A_ (W)w);
3940 if (expect_false (!ev_is_active (w))) 4965 if (ecb_expect_false (!ev_is_active (w)))
3941 return; 4966 return;
3942 4967
3943 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
3944 4969
3945 { 4970 {
… …
3956} 4981}
3957#endif 4982#endif
3958 4983
3959#if EV_PREPARE_ENABLE 4984#if EV_PREPARE_ENABLE
3960void 4985void
3961ev_prepare_start (EV_P_ ev_prepare *w) 4986ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3962{ 4987{
3963 if (expect_false (ev_is_active (w))) 4988 if (ecb_expect_false (ev_is_active (w)))
3964 return; 4989 return;
3965 4990
3966 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
3967 4992
3968 ev_start (EV_A_ (W)w, ++preparecnt); 4993 ev_start (EV_A_ (W)w, ++preparecnt);
3969 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4994 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3970 prepares [preparecnt - 1] = w; 4995 prepares [preparecnt - 1] = w;
3971 4996
3972 EV_FREQUENT_CHECK; 4997 EV_FREQUENT_CHECK;
3973} 4998}
3974 4999
3975void 5000void
3976ev_prepare_stop (EV_P_ ev_prepare *w) 5001ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3977{ 5002{
3978 clear_pending (EV_A_ (W)w); 5003 clear_pending (EV_A_ (W)w);
3979 if (expect_false (!ev_is_active (w))) 5004 if (ecb_expect_false (!ev_is_active (w)))
3980 return; 5005 return;
3981 5006
3982 EV_FREQUENT_CHECK; 5007 EV_FREQUENT_CHECK;
3983 5008
3984 { 5009 {
… …
3994} 5019}
3995#endif 5020#endif
3996 5021
3997#if EV_CHECK_ENABLE 5022#if EV_CHECK_ENABLE
3998void 5023void
3999ev_check_start (EV_P_ ev_check *w) 5024ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4000{ 5025{
4001 if (expect_false (ev_is_active (w))) 5026 if (ecb_expect_false (ev_is_active (w)))
4002 return; 5027 return;
4003 5028
4004 EV_FREQUENT_CHECK; 5029 EV_FREQUENT_CHECK;
4005 5030
4006 ev_start (EV_A_ (W)w, ++checkcnt); 5031 ev_start (EV_A_ (W)w, ++checkcnt);
4007 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5032 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4008 checks [checkcnt - 1] = w; 5033 checks [checkcnt - 1] = w;
4009 5034
4010 EV_FREQUENT_CHECK; 5035 EV_FREQUENT_CHECK;
4011} 5036}
4012 5037
4013void 5038void
4014ev_check_stop (EV_P_ ev_check *w) 5039ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4015{ 5040{
4016 clear_pending (EV_A_ (W)w); 5041 clear_pending (EV_A_ (W)w);
4017 if (expect_false (!ev_is_active (w))) 5042 if (ecb_expect_false (!ev_is_active (w)))
4018 return; 5043 return;
4019 5044
4020 EV_FREQUENT_CHECK; 5045 EV_FREQUENT_CHECK;
4021 5046
4022 { 5047 {
… …
4031 EV_FREQUENT_CHECK; 5056 EV_FREQUENT_CHECK;
4032} 5057}
4033#endif 5058#endif
4034 5059
4035#if EV_EMBED_ENABLE 5060#if EV_EMBED_ENABLE
4036void noinline 5061ecb_noinline
5062void
4037ev_embed_sweep (EV_P_ ev_embed *w) 5063ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4038{ 5064{
4039 ev_run (w->other, EVRUN_NOWAIT); 5065 ev_run (w->other, EVRUN_NOWAIT);
4040} 5066}
4041 5067
4042static void 5068static void
… …
4064 ev_run (EV_A_ EVRUN_NOWAIT); 5090 ev_run (EV_A_ EVRUN_NOWAIT);
4065 } 5091 }
4066 } 5092 }
4067} 5093}
4068 5094
5095#if EV_FORK_ENABLE
4069static void 5096static void
4070embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5097embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4071{ 5098{
4072 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5099 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4073 5100
… …
4080 ev_run (EV_A_ EVRUN_NOWAIT); 5107 ev_run (EV_A_ EVRUN_NOWAIT);
4081 } 5108 }
4082 5109
4083 ev_embed_start (EV_A_ w); 5110 ev_embed_start (EV_A_ w);
4084} 5111}
5112#endif
4085 5113
4086#if 0 5114#if 0
4087static void 5115static void
4088embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5116embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4089{ 5117{
4090 ev_idle_stop (EV_A_ idle); 5118 ev_idle_stop (EV_A_ idle);
4091} 5119}
4092#endif 5120#endif
4093 5121
4094void 5122void
4095ev_embed_start (EV_P_ ev_embed *w) 5123ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4096{ 5124{
4097 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
4098 return; 5126 return;
4099 5127
4100 { 5128 {
4101 EV_P = w->other; 5129 EV_P = w->other;
4102 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5130 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4110 5138
4111 ev_prepare_init (&w->prepare, embed_prepare_cb); 5139 ev_prepare_init (&w->prepare, embed_prepare_cb);
4112 ev_set_priority (&w->prepare, EV_MINPRI); 5140 ev_set_priority (&w->prepare, EV_MINPRI);
4113 ev_prepare_start (EV_A_ &w->prepare); 5141 ev_prepare_start (EV_A_ &w->prepare);
4114 5142
5143#if EV_FORK_ENABLE
4115 ev_fork_init (&w->fork, embed_fork_cb); 5144 ev_fork_init (&w->fork, embed_fork_cb);
4116 ev_fork_start (EV_A_ &w->fork); 5145 ev_fork_start (EV_A_ &w->fork);
5146#endif
4117 5147
4118 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5148 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4119 5149
4120 ev_start (EV_A_ (W)w, 1); 5150 ev_start (EV_A_ (W)w, 1);
4121 5151
4122 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
4123} 5153}
4124 5154
4125void 5155void
4126ev_embed_stop (EV_P_ ev_embed *w) 5156ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4127{ 5157{
4128 clear_pending (EV_A_ (W)w); 5158 clear_pending (EV_A_ (W)w);
4129 if (expect_false (!ev_is_active (w))) 5159 if (ecb_expect_false (!ev_is_active (w)))
4130 return; 5160 return;
4131 5161
4132 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
4133 5163
4134 ev_io_stop (EV_A_ &w->io); 5164 ev_io_stop (EV_A_ &w->io);
4135 ev_prepare_stop (EV_A_ &w->prepare); 5165 ev_prepare_stop (EV_A_ &w->prepare);
5166#if EV_FORK_ENABLE
4136 ev_fork_stop (EV_A_ &w->fork); 5167 ev_fork_stop (EV_A_ &w->fork);
5168#endif
4137 5169
4138 ev_stop (EV_A_ (W)w); 5170 ev_stop (EV_A_ (W)w);
4139 5171
4140 EV_FREQUENT_CHECK; 5172 EV_FREQUENT_CHECK;
4141} 5173}
4142#endif 5174#endif
4143 5175
4144#if EV_FORK_ENABLE 5176#if EV_FORK_ENABLE
4145void 5177void
4146ev_fork_start (EV_P_ ev_fork *w) 5178ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4147{ 5179{
4148 if (expect_false (ev_is_active (w))) 5180 if (ecb_expect_false (ev_is_active (w)))
4149 return; 5181 return;
4150 5182
4151 EV_FREQUENT_CHECK; 5183 EV_FREQUENT_CHECK;
4152 5184
4153 ev_start (EV_A_ (W)w, ++forkcnt); 5185 ev_start (EV_A_ (W)w, ++forkcnt);
4154 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5186 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4155 forks [forkcnt - 1] = w; 5187 forks [forkcnt - 1] = w;
4156 5188
4157 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
4158} 5190}
4159 5191
4160void 5192void
4161ev_fork_stop (EV_P_ ev_fork *w) 5193ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4162{ 5194{
4163 clear_pending (EV_A_ (W)w); 5195 clear_pending (EV_A_ (W)w);
4164 if (expect_false (!ev_is_active (w))) 5196 if (ecb_expect_false (!ev_is_active (w)))
4165 return; 5197 return;
4166 5198
4167 EV_FREQUENT_CHECK; 5199 EV_FREQUENT_CHECK;
4168 5200
4169 { 5201 {
… …
4179} 5211}
4180#endif 5212#endif
4181 5213
4182#if EV_CLEANUP_ENABLE 5214#if EV_CLEANUP_ENABLE
4183void 5215void
4184ev_cleanup_start (EV_P_ ev_cleanup *w) 5216ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4185{ 5217{
4186 if (expect_false (ev_is_active (w))) 5218 if (ecb_expect_false (ev_is_active (w)))
4187 return; 5219 return;
4188 5220
4189 EV_FREQUENT_CHECK; 5221 EV_FREQUENT_CHECK;
4190 5222
4191 ev_start (EV_A_ (W)w, ++cleanupcnt); 5223 ev_start (EV_A_ (W)w, ++cleanupcnt);
4192 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5224 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4193 cleanups [cleanupcnt - 1] = w; 5225 cleanups [cleanupcnt - 1] = w;
4194 5226
4195 /* cleanup watchers should never keep a refcount on the loop */ 5227 /* cleanup watchers should never keep a refcount on the loop */
4196 ev_unref (EV_A); 5228 ev_unref (EV_A);
4197 EV_FREQUENT_CHECK; 5229 EV_FREQUENT_CHECK;
4198} 5230}
4199 5231
4200void 5232void
4201ev_cleanup_stop (EV_P_ ev_cleanup *w) 5233ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4202{ 5234{
4203 clear_pending (EV_A_ (W)w); 5235 clear_pending (EV_A_ (W)w);
4204 if (expect_false (!ev_is_active (w))) 5236 if (ecb_expect_false (!ev_is_active (w)))
4205 return; 5237 return;
4206 5238
4207 EV_FREQUENT_CHECK; 5239 EV_FREQUENT_CHECK;
4208 ev_ref (EV_A); 5240 ev_ref (EV_A);
4209 5241
… …
4220} 5252}
4221#endif 5253#endif
4222 5254
4223#if EV_ASYNC_ENABLE 5255#if EV_ASYNC_ENABLE
4224void 5256void
4225ev_async_start (EV_P_ ev_async *w) 5257ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4226{ 5258{
4227 if (expect_false (ev_is_active (w))) 5259 if (ecb_expect_false (ev_is_active (w)))
4228 return; 5260 return;
4229 5261
4230 w->sent = 0; 5262 w->sent = 0;
4231 5263
4232 evpipe_init (EV_A); 5264 evpipe_init (EV_A);
4233 5265
4234 EV_FREQUENT_CHECK; 5266 EV_FREQUENT_CHECK;
4235 5267
4236 ev_start (EV_A_ (W)w, ++asynccnt); 5268 ev_start (EV_A_ (W)w, ++asynccnt);
4237 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5269 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4238 asyncs [asynccnt - 1] = w; 5270 asyncs [asynccnt - 1] = w;
4239 5271
4240 EV_FREQUENT_CHECK; 5272 EV_FREQUENT_CHECK;
4241} 5273}
4242 5274
4243void 5275void
4244ev_async_stop (EV_P_ ev_async *w) 5276ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4245{ 5277{
4246 clear_pending (EV_A_ (W)w); 5278 clear_pending (EV_A_ (W)w);
4247 if (expect_false (!ev_is_active (w))) 5279 if (ecb_expect_false (!ev_is_active (w)))
4248 return; 5280 return;
4249 5281
4250 EV_FREQUENT_CHECK; 5282 EV_FREQUENT_CHECK;
4251 5283
4252 { 5284 {
… …
4260 5292
4261 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4262} 5294}
4263 5295
4264void 5296void
4265ev_async_send (EV_P_ ev_async *w) 5297ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4266{ 5298{
4267 w->sent = 1; 5299 w->sent = 1;
4268 evpipe_write (EV_A_ &async_pending); 5300 evpipe_write (EV_A_ &async_pending);
4269} 5301}
4270#endif 5302#endif
… …
4307 5339
4308 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5340 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4309} 5341}
4310 5342
4311void 5343void
4312ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5344ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4313{ 5345{
4314 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5346 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4315
4316 if (expect_false (!once))
4317 {
4318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4319 return;
4320 }
4321 5347
4322 once->cb = cb; 5348 once->cb = cb;
4323 once->arg = arg; 5349 once->arg = arg;
4324 5350
4325 ev_init (&once->io, once_cb_io); 5351 ev_init (&once->io, once_cb_io);
… …
4338} 5364}
4339 5365
4340/*****************************************************************************/ 5366/*****************************************************************************/
4341 5367
4342#if EV_WALK_ENABLE 5368#if EV_WALK_ENABLE
4343void ecb_cold 5369ecb_cold
5370void
4344ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4345{ 5372{
4346 int i, j; 5373 int i, j;
4347 ev_watcher_list *wl, *wn; 5374 ev_watcher_list *wl, *wn;
4348 5375
4349 if (types & (EV_IO | EV_EMBED)) 5376 if (types & (EV_IO | EV_EMBED))

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