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Comparing libev/ev.c (file contents):
Revision 1.403 by root, Wed Jan 18 12:13:14 2012 UTC vs.
Revision 1.517 by root, Tue Dec 24 13:52:58 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 EV_FEATURE_BACKENDS
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 1
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_xC >= 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__ 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 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 defined(__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 | #StoreLoad | #LoadLoad | #StoreStore" : : : "memory") 801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadLoad" : : : "memory") 802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #StoreStore") 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 && !defined __OPTIMIZE_SIZE__
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
… …
1509 ev_io *w; 2296 ev_io *w;
1510 2297
1511 unsigned char o_events = anfd->events; 2298 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify; 2299 unsigned char o_reify = anfd->reify;
1513 2300
1514 anfd->reify = 0; 2301 anfd->reify = 0;
1515 2302
1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2303 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1517 { 2304 {
1518 anfd->events = 0; 2305 anfd->events = 0;
1519 2306
1520 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2307 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1521 anfd->events |= (unsigned char)w->events; 2308 anfd->events |= (unsigned char)w->events;
… …
1530 2317
1531 fdchangecnt = 0; 2318 fdchangecnt = 0;
1532} 2319}
1533 2320
1534/* something about the given fd changed */ 2321/* something about the given fd changed */
1535inline_size void 2322inline_size
2323void
1536fd_change (EV_P_ int fd, int flags) 2324fd_change (EV_P_ int fd, int flags)
1537{ 2325{
1538 unsigned char reify = anfds [fd].reify; 2326 unsigned char reify = anfds [fd].reify;
1539 anfds [fd].reify |= flags; 2327 anfds [fd].reify |= flags;
1540 2328
1541 if (expect_true (!reify)) 2329 if (ecb_expect_true (!reify))
1542 { 2330 {
1543 ++fdchangecnt; 2331 ++fdchangecnt;
1544 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2332 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1545 fdchanges [fdchangecnt - 1] = fd; 2333 fdchanges [fdchangecnt - 1] = fd;
1546 } 2334 }
1547} 2335}
1548 2336
1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2337/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1550inline_speed void ecb_cold 2338inline_speed ecb_cold void
1551fd_kill (EV_P_ int fd) 2339fd_kill (EV_P_ int fd)
1552{ 2340{
1553 ev_io *w; 2341 ev_io *w;
1554 2342
1555 while ((w = (ev_io *)anfds [fd].head)) 2343 while ((w = (ev_io *)anfds [fd].head))
… …
1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2346 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1559 } 2347 }
1560} 2348}
1561 2349
1562/* check whether the given fd is actually valid, for error recovery */ 2350/* check whether the given fd is actually valid, for error recovery */
1563inline_size int ecb_cold 2351inline_size ecb_cold int
1564fd_valid (int fd) 2352fd_valid (int fd)
1565{ 2353{
1566#ifdef _WIN32 2354#ifdef _WIN32
1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2355 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1568#else 2356#else
1569 return fcntl (fd, F_GETFD) != -1; 2357 return fcntl (fd, F_GETFD) != -1;
1570#endif 2358#endif
1571} 2359}
1572 2360
1573/* called on EBADF to verify fds */ 2361/* called on EBADF to verify fds */
1574static void noinline ecb_cold 2362ecb_noinline ecb_cold
2363static void
1575fd_ebadf (EV_P) 2364fd_ebadf (EV_P)
1576{ 2365{
1577 int fd; 2366 int fd;
1578 2367
1579 for (fd = 0; fd < anfdmax; ++fd) 2368 for (fd = 0; fd < anfdmax; ++fd)
… …
1581 if (!fd_valid (fd) && errno == EBADF) 2370 if (!fd_valid (fd) && errno == EBADF)
1582 fd_kill (EV_A_ fd); 2371 fd_kill (EV_A_ fd);
1583} 2372}
1584 2373
1585/* called on ENOMEM in select/poll to kill some fds and retry */ 2374/* called on ENOMEM in select/poll to kill some fds and retry */
1586static void noinline ecb_cold 2375ecb_noinline ecb_cold
2376static void
1587fd_enomem (EV_P) 2377fd_enomem (EV_P)
1588{ 2378{
1589 int fd; 2379 int fd;
1590 2380
1591 for (fd = anfdmax; fd--; ) 2381 for (fd = anfdmax; fd--; )
… …
1595 break; 2385 break;
1596 } 2386 }
1597} 2387}
1598 2388
1599/* usually called after fork if backend needs to re-arm all fds from scratch */ 2389/* usually called after fork if backend needs to re-arm all fds from scratch */
1600static void noinline 2390ecb_noinline
2391static void
1601fd_rearm_all (EV_P) 2392fd_rearm_all (EV_P)
1602{ 2393{
1603 int fd; 2394 int fd;
1604 2395
1605 for (fd = 0; fd < anfdmax; ++fd) 2396 for (fd = 0; fd < anfdmax; ++fd)
… …
1658 ev_tstamp minat; 2449 ev_tstamp minat;
1659 ANHE *minpos; 2450 ANHE *minpos;
1660 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2451 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1661 2452
1662 /* find minimum child */ 2453 /* find minimum child */
1663 if (expect_true (pos + DHEAP - 1 < E)) 2454 if (ecb_expect_true (pos + DHEAP - 1 < E))
1664 { 2455 {
1665 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2456 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1666 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2457 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)); 2458 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)); 2459 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1669 } 2460 }
1670 else if (pos < E) 2461 else if (pos < E)
1671 { 2462 {
1672 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2463 /* 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)); 2464 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)); 2465 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)); 2466 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1676 } 2467 }
1677 else 2468 else
1678 break; 2469 break;
1679 2470
1680 if (ANHE_at (he) <= minat) 2471 if (ANHE_at (he) <= minat)
… …
1688 2479
1689 heap [k] = he; 2480 heap [k] = he;
1690 ev_active (ANHE_w (he)) = k; 2481 ev_active (ANHE_w (he)) = k;
1691} 2482}
1692 2483
1693#else /* 4HEAP */ 2484#else /* not 4HEAP */
1694 2485
1695#define HEAP0 1 2486#define HEAP0 1
1696#define HPARENT(k) ((k) >> 1) 2487#define HPARENT(k) ((k) >> 1)
1697#define UPHEAP_DONE(p,k) (!(p)) 2488#define UPHEAP_DONE(p,k) (!(p))
1698 2489
… …
1786 2577
1787/*****************************************************************************/ 2578/*****************************************************************************/
1788 2579
1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2580#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1790 2581
1791static void noinline ecb_cold 2582ecb_noinline ecb_cold
2583static void
1792evpipe_init (EV_P) 2584evpipe_init (EV_P)
1793{ 2585{
1794 if (!ev_is_active (&pipe_w)) 2586 if (!ev_is_active (&pipe_w))
1795 { 2587 {
2588 int fds [2];
2589
1796# if EV_USE_EVENTFD 2590# if EV_USE_EVENTFD
2591 fds [0] = -1;
1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2592 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1798 if (evfd < 0 && errno == EINVAL) 2593 if (fds [1] < 0 && errno == EINVAL)
1799 evfd = eventfd (0, 0); 2594 fds [1] = eventfd (0, 0);
1800 2595
1801 if (evfd >= 0) 2596 if (fds [1] < 0)
2597# endif
1802 { 2598 {
2599 while (pipe (fds))
2600 ev_syserr ("(libev) error creating signal/async pipe");
2601
2602 fd_intern (fds [0]);
2603 }
2604
1803 evpipe [0] = -1; 2605 evpipe [0] = fds [0];
1804 fd_intern (evfd); /* doing it twice doesn't hurt */ 2606
1805 ev_io_set (&pipe_w, evfd, EV_READ); 2607 if (evpipe [1] < 0)
2608 evpipe [1] = fds [1]; /* first call, set write fd */
2609 else
2610 {
2611 /* on subsequent calls, do not change evpipe [1] */
2612 /* so that evpipe_write can always rely on its value. */
2613 /* this branch does not do anything sensible on windows, */
2614 /* so must not be executed on windows */
2615
2616 dup2 (fds [1], evpipe [1]);
2617 close (fds [1]);
2618 }
2619
2620 fd_intern (evpipe [1]);
2621
2622 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2623 ev_io_start (EV_A_ &pipe_w);
2624 ev_unref (EV_A); /* watcher should not keep loop alive */
2625 }
2626}
2627
2628inline_speed void
2629evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2630{
2631 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2632
2633 if (ecb_expect_true (*flag))
2634 return;
2635
2636 *flag = 1;
2637 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2638
2639 pipe_write_skipped = 1;
2640
2641 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2642
2643 if (pipe_write_wanted)
2644 {
2645 int old_errno;
2646
2647 pipe_write_skipped = 0;
2648 ECB_MEMORY_FENCE_RELEASE;
2649
2650 old_errno = errno; /* save errno because write will clobber it */
2651
2652#if EV_USE_EVENTFD
2653 if (evpipe [0] < 0)
2654 {
2655 uint64_t counter = 1;
2656 write (evpipe [1], &counter, sizeof (uint64_t));
1806 } 2657 }
1807 else 2658 else
1808# endif 2659#endif
1809 { 2660 {
1810 while (pipe (evpipe)) 2661#ifdef _WIN32
1811 ev_syserr ("(libev) error creating signal/async pipe"); 2662 WSABUF buf;
1812 2663 DWORD sent;
1813 fd_intern (evpipe [0]); 2664 buf.buf = (char *)&buf;
1814 fd_intern (evpipe [1]); 2665 buf.len = 1;
1815 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2666 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1816 } 2667#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); 2668 write (evpipe [1], &(evpipe [1]), 1);
2669#endif
1860 } 2670 }
1861 2671
1862 errno = old_errno; 2672 errno = old_errno;
1863 } 2673 }
1864} 2674}
… …
1871 int i; 2681 int i;
1872 2682
1873 if (revents & EV_READ) 2683 if (revents & EV_READ)
1874 { 2684 {
1875#if EV_USE_EVENTFD 2685#if EV_USE_EVENTFD
1876 if (evfd >= 0) 2686 if (evpipe [0] < 0)
1877 { 2687 {
1878 uint64_t counter; 2688 uint64_t counter;
1879 read (evfd, &counter, sizeof (uint64_t)); 2689 read (evpipe [1], &counter, sizeof (uint64_t));
1880 } 2690 }
1881 else 2691 else
1882#endif 2692#endif
1883 { 2693 {
1884 char dummy; 2694 char dummy[4];
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2695#ifdef _WIN32
2696 WSABUF buf;
2697 DWORD recvd;
2698 DWORD flags = 0;
2699 buf.buf = dummy;
2700 buf.len = sizeof (dummy);
2701 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2702#else
1886 read (evpipe [0], &dummy, 1); 2703 read (evpipe [0], &dummy, sizeof (dummy));
2704#endif
1887 } 2705 }
1888 } 2706 }
1889 2707
1890 pipe_write_skipped = 0; 2708 pipe_write_skipped = 0;
2709
2710 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1891 2711
1892#if EV_SIGNAL_ENABLE 2712#if EV_SIGNAL_ENABLE
1893 if (sig_pending) 2713 if (sig_pending)
1894 { 2714 {
1895 sig_pending = 0; 2715 sig_pending = 0;
1896 2716
2717 ECB_MEMORY_FENCE;
2718
1897 for (i = EV_NSIG - 1; i--; ) 2719 for (i = EV_NSIG - 1; i--; )
1898 if (expect_false (signals [i].pending)) 2720 if (ecb_expect_false (signals [i].pending))
1899 ev_feed_signal_event (EV_A_ i + 1); 2721 ev_feed_signal_event (EV_A_ i + 1);
1900 } 2722 }
1901#endif 2723#endif
1902 2724
1903#if EV_ASYNC_ENABLE 2725#if EV_ASYNC_ENABLE
1904 if (async_pending) 2726 if (async_pending)
1905 { 2727 {
1906 async_pending = 0; 2728 async_pending = 0;
2729
2730 ECB_MEMORY_FENCE;
1907 2731
1908 for (i = asynccnt; i--; ) 2732 for (i = asynccnt; i--; )
1909 if (asyncs [i]->sent) 2733 if (asyncs [i]->sent)
1910 { 2734 {
1911 asyncs [i]->sent = 0; 2735 asyncs [i]->sent = 0;
2736 ECB_MEMORY_FENCE_RELEASE;
1912 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2737 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1913 } 2738 }
1914 } 2739 }
1915#endif 2740#endif
1916} 2741}
1917 2742
1918/*****************************************************************************/ 2743/*****************************************************************************/
1919 2744
1920void 2745void
1921ev_feed_signal (int signum) 2746ev_feed_signal (int signum) EV_NOEXCEPT
1922{ 2747{
1923#if EV_MULTIPLICITY 2748#if EV_MULTIPLICITY
2749 EV_P;
2750 ECB_MEMORY_FENCE_ACQUIRE;
1924 EV_P = signals [signum - 1].loop; 2751 EV_A = signals [signum - 1].loop;
1925 2752
1926 if (!EV_A) 2753 if (!EV_A)
1927 return; 2754 return;
1928#endif 2755#endif
1929 2756
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1; 2757 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending); 2758 evpipe_write (EV_A_ &sig_pending);
1935} 2759}
1936 2760
1937static void 2761static void
… …
1942#endif 2766#endif
1943 2767
1944 ev_feed_signal (signum); 2768 ev_feed_signal (signum);
1945} 2769}
1946 2770
1947void noinline 2771ecb_noinline
2772void
1948ev_feed_signal_event (EV_P_ int signum) 2773ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1949{ 2774{
1950 WL w; 2775 WL w;
1951 2776
1952 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2777 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1953 return; 2778 return;
1954 2779
1955 --signum; 2780 --signum;
1956 2781
1957#if EV_MULTIPLICITY 2782#if EV_MULTIPLICITY
1958 /* it is permissible to try to feed a signal to the wrong loop */ 2783 /* 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 */ 2784 /* or, likely more useful, feeding a signal nobody is waiting for */
1960 2785
1961 if (expect_false (signals [signum].loop != EV_A)) 2786 if (ecb_expect_false (signals [signum].loop != EV_A))
1962 return; 2787 return;
1963#endif 2788#endif
1964 2789
1965 signals [signum].pending = 0; 2790 signals [signum].pending = 0;
2791 ECB_MEMORY_FENCE_RELEASE;
1966 2792
1967 for (w = signals [signum].head; w; w = w->next) 2793 for (w = signals [signum].head; w; w = w->next)
1968 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2794 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1969} 2795}
1970 2796
… …
2049 2875
2050#endif 2876#endif
2051 2877
2052/*****************************************************************************/ 2878/*****************************************************************************/
2053 2879
2880#if EV_USE_TIMERFD
2881
2882static void periodics_reschedule (EV_P);
2883
2884static void
2885timerfdcb (EV_P_ ev_io *iow, int revents)
2886{
2887 struct itimerspec its = { 0 };
2888
2889 /* since we can't easily come zup with a (portable) maximum value of time_t,
2890 * we wake up once per month, which hopefully is rare enough to not
2891 * be a problem. */
2892 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2893 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2894
2895 ev_rt_now = ev_time ();
2896 /* periodics_reschedule only needs ev_rt_now */
2897 /* but maybe in the future we want the full treatment. */
2898 /*
2899 now_floor = EV_TS_CONST (0.);
2900 time_update (EV_A_ EV_TSTAMP_HUGE);
2901 */
2902 periodics_reschedule (EV_A);
2903}
2904
2905ecb_noinline ecb_cold
2906static void
2907evtimerfd_init (EV_P)
2908{
2909 if (!ev_is_active (&timerfd_w))
2910 {
2911 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2912
2913 if (timerfd >= 0)
2914 {
2915 fd_intern (timerfd); /* just to be sure */
2916
2917 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2918 ev_set_priority (&timerfd_w, EV_MINPRI);
2919 ev_io_start (EV_A_ &timerfd_w);
2920 ev_unref (EV_A); /* watcher should not keep loop alive */
2921
2922 /* (re-) arm timer */
2923 timerfdcb (EV_A_ 0, 0);
2924 }
2925 }
2926}
2927
2928#endif
2929
2930/*****************************************************************************/
2931
2054#if EV_USE_IOCP 2932#if EV_USE_IOCP
2055# include "ev_iocp.c" 2933# include "ev_iocp.c"
2056#endif 2934#endif
2057#if EV_USE_PORT 2935#if EV_USE_PORT
2058# include "ev_port.c" 2936# include "ev_port.c"
… …
2061# include "ev_kqueue.c" 2939# include "ev_kqueue.c"
2062#endif 2940#endif
2063#if EV_USE_EPOLL 2941#if EV_USE_EPOLL
2064# include "ev_epoll.c" 2942# include "ev_epoll.c"
2065#endif 2943#endif
2944#if EV_USE_LINUXAIO
2945# include "ev_linuxaio.c"
2946#endif
2947#if EV_USE_IOURING
2948# include "ev_iouring.c"
2949#endif
2066#if EV_USE_POLL 2950#if EV_USE_POLL
2067# include "ev_poll.c" 2951# include "ev_poll.c"
2068#endif 2952#endif
2069#if EV_USE_SELECT 2953#if EV_USE_SELECT
2070# include "ev_select.c" 2954# include "ev_select.c"
2071#endif 2955#endif
2072 2956
2073int ecb_cold 2957ecb_cold int
2074ev_version_major (void) 2958ev_version_major (void) EV_NOEXCEPT
2075{ 2959{
2076 return EV_VERSION_MAJOR; 2960 return EV_VERSION_MAJOR;
2077} 2961}
2078 2962
2079int ecb_cold 2963ecb_cold int
2080ev_version_minor (void) 2964ev_version_minor (void) EV_NOEXCEPT
2081{ 2965{
2082 return EV_VERSION_MINOR; 2966 return EV_VERSION_MINOR;
2083} 2967}
2084 2968
2085/* return true if we are running with elevated privileges and should ignore env variables */ 2969/* return true if we are running with elevated privileges and should ignore env variables */
2086int inline_size ecb_cold 2970inline_size ecb_cold int
2087enable_secure (void) 2971enable_secure (void)
2088{ 2972{
2089#ifdef _WIN32 2973#ifdef _WIN32
2090 return 0; 2974 return 0;
2091#else 2975#else
2092 return getuid () != geteuid () 2976 return getuid () != geteuid ()
2093 || getgid () != getegid (); 2977 || getgid () != getegid ();
2094#endif 2978#endif
2095} 2979}
2096 2980
2097unsigned int ecb_cold 2981ecb_cold
2982unsigned int
2098ev_supported_backends (void) 2983ev_supported_backends (void) EV_NOEXCEPT
2099{ 2984{
2100 unsigned int flags = 0; 2985 unsigned int flags = 0;
2101 2986
2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2987 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2103 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2988 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2104 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2989 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2990 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2991 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2105 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2992 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2993 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2107 2994
2108 return flags; 2995 return flags;
2109} 2996}
2110 2997
2111unsigned int ecb_cold 2998ecb_cold
2999unsigned int
2112ev_recommended_backends (void) 3000ev_recommended_backends (void) EV_NOEXCEPT
2113{ 3001{
2114 unsigned int flags = ev_supported_backends (); 3002 unsigned int flags = ev_supported_backends ();
2115 3003
2116#ifndef __NetBSD__ 3004#ifndef __NetBSD__
2117 /* kqueue is borked on everything but netbsd apparently */ 3005 /* kqueue is borked on everything but netbsd apparently */
… …
2125#endif 3013#endif
2126#ifdef __FreeBSD__ 3014#ifdef __FreeBSD__
2127 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3015 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2128#endif 3016#endif
2129 3017
3018 /* TODO: linuxaio is very experimental */
3019#if !EV_RECOMMEND_LINUXAIO
3020 flags &= ~EVBACKEND_LINUXAIO;
3021#endif
3022 /* TODO: linuxaio is super experimental */
3023#if !EV_RECOMMEND_IOURING
3024 flags &= ~EVBACKEND_IOURING;
3025#endif
3026
2130 return flags; 3027 return flags;
2131} 3028}
2132 3029
2133unsigned int ecb_cold 3030ecb_cold
3031unsigned int
2134ev_embeddable_backends (void) 3032ev_embeddable_backends (void) EV_NOEXCEPT
2135{ 3033{
2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3034 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2137 3035
2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3036 /* 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 */ 3037 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2140 flags &= ~EVBACKEND_EPOLL; 3038 flags &= ~EVBACKEND_EPOLL;
2141 3039
3040 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3041
3042 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3043 * because our backend_fd is the epoll fd we need as fallback.
3044 * if the kernel ever is fixed, this might change...
3045 */
3046
2142 return flags; 3047 return flags;
2143} 3048}
2144 3049
2145unsigned int 3050unsigned int
2146ev_backend (EV_P) 3051ev_backend (EV_P) EV_NOEXCEPT
2147{ 3052{
2148 return backend; 3053 return backend;
2149} 3054}
2150 3055
2151#if EV_FEATURE_API 3056#if EV_FEATURE_API
2152unsigned int 3057unsigned int
2153ev_iteration (EV_P) 3058ev_iteration (EV_P) EV_NOEXCEPT
2154{ 3059{
2155 return loop_count; 3060 return loop_count;
2156} 3061}
2157 3062
2158unsigned int 3063unsigned int
2159ev_depth (EV_P) 3064ev_depth (EV_P) EV_NOEXCEPT
2160{ 3065{
2161 return loop_depth; 3066 return loop_depth;
2162} 3067}
2163 3068
2164void 3069void
2165ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3070ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2166{ 3071{
2167 io_blocktime = interval; 3072 io_blocktime = interval;
2168} 3073}
2169 3074
2170void 3075void
2171ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3076ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2172{ 3077{
2173 timeout_blocktime = interval; 3078 timeout_blocktime = interval;
2174} 3079}
2175 3080
2176void 3081void
2177ev_set_userdata (EV_P_ void *data) 3082ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2178{ 3083{
2179 userdata = data; 3084 userdata = data;
2180} 3085}
2181 3086
2182void * 3087void *
2183ev_userdata (EV_P) 3088ev_userdata (EV_P) EV_NOEXCEPT
2184{ 3089{
2185 return userdata; 3090 return userdata;
2186} 3091}
2187 3092
2188void 3093void
2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3094ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2190{ 3095{
2191 invoke_cb = invoke_pending_cb; 3096 invoke_cb = invoke_pending_cb;
2192} 3097}
2193 3098
2194void 3099void
2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3100ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2196{ 3101{
2197 release_cb = release; 3102 release_cb = release;
2198 acquire_cb = acquire; 3103 acquire_cb = acquire;
2199} 3104}
2200#endif 3105#endif
2201 3106
2202/* initialise a loop structure, must be zero-initialised */ 3107/* initialise a loop structure, must be zero-initialised */
2203static void noinline ecb_cold 3108ecb_noinline ecb_cold
3109static void
2204loop_init (EV_P_ unsigned int flags) 3110loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2205{ 3111{
2206 if (!backend) 3112 if (!backend)
2207 { 3113 {
2208 origflags = flags; 3114 origflags = flags;
2209 3115
… …
2254#if EV_ASYNC_ENABLE 3160#if EV_ASYNC_ENABLE
2255 async_pending = 0; 3161 async_pending = 0;
2256#endif 3162#endif
2257 pipe_write_skipped = 0; 3163 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0; 3164 pipe_write_wanted = 0;
3165 evpipe [0] = -1;
3166 evpipe [1] = -1;
2259#if EV_USE_INOTIFY 3167#if EV_USE_INOTIFY
2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3168 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2261#endif 3169#endif
2262#if EV_USE_SIGNALFD 3170#if EV_USE_SIGNALFD
2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3171 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2264#endif 3172#endif
3173#if EV_USE_TIMERFD
3174 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3175#endif
2265 3176
2266 if (!(flags & EVBACKEND_MASK)) 3177 if (!(flags & EVBACKEND_MASK))
2267 flags |= ev_recommended_backends (); 3178 flags |= ev_recommended_backends ();
2268 3179
2269#if EV_USE_IOCP 3180#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3181 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif 3182#endif
2272#if EV_USE_PORT 3183#if EV_USE_PORT
2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3184 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2274#endif 3185#endif
2275#if EV_USE_KQUEUE 3186#if EV_USE_KQUEUE
2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3187 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3188#endif
3189#if EV_USE_IOURING
3190 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3191#endif
3192#if EV_USE_LINUXAIO
3193 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2277#endif 3194#endif
2278#if EV_USE_EPOLL 3195#if EV_USE_EPOLL
2279 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3196 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2280#endif 3197#endif
2281#if EV_USE_POLL 3198#if EV_USE_POLL
2282 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3199 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2283#endif 3200#endif
2284#if EV_USE_SELECT 3201#if EV_USE_SELECT
2285 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3202 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2286#endif 3203#endif
2287 3204
2288 ev_prepare_init (&pending_w, pendingcb); 3205 ev_prepare_init (&pending_w, pendingcb);
2289 3206
2290#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3207#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2293#endif 3210#endif
2294 } 3211 }
2295} 3212}
2296 3213
2297/* free up a loop structure */ 3214/* free up a loop structure */
2298void ecb_cold 3215ecb_cold
3216void
2299ev_loop_destroy (EV_P) 3217ev_loop_destroy (EV_P)
2300{ 3218{
2301 int i; 3219 int i;
2302 3220
2303#if EV_MULTIPLICITY 3221#if EV_MULTIPLICITY
… …
2306 return; 3224 return;
2307#endif 3225#endif
2308 3226
2309#if EV_CLEANUP_ENABLE 3227#if EV_CLEANUP_ENABLE
2310 /* queue cleanup watchers (and execute them) */ 3228 /* queue cleanup watchers (and execute them) */
2311 if (expect_false (cleanupcnt)) 3229 if (ecb_expect_false (cleanupcnt))
2312 { 3230 {
2313 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2314 EV_INVOKE_PENDING; 3232 EV_INVOKE_PENDING;
2315 } 3233 }
2316#endif 3234#endif
2317 3235
2318#if EV_CHILD_ENABLE 3236#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev)) 3237 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2320 { 3238 {
2321 ev_ref (EV_A); /* child watcher */ 3239 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev); 3240 ev_signal_stop (EV_A_ &childev);
2323 } 3241 }
2324#endif 3242#endif
… …
2326 if (ev_is_active (&pipe_w)) 3244 if (ev_is_active (&pipe_w))
2327 { 3245 {
2328 /*ev_ref (EV_A);*/ 3246 /*ev_ref (EV_A);*/
2329 /*ev_io_stop (EV_A_ &pipe_w);*/ 3247 /*ev_io_stop (EV_A_ &pipe_w);*/
2330 3248
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]); 3249 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2339 EV_WIN32_CLOSE_FD (evpipe [1]); 3250 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2340 }
2341 } 3251 }
2342 3252
2343#if EV_USE_SIGNALFD 3253#if EV_USE_SIGNALFD
2344 if (ev_is_active (&sigfd_w)) 3254 if (ev_is_active (&sigfd_w))
2345 close (sigfd); 3255 close (sigfd);
2346#endif 3256#endif
2347 3257
3258#if EV_USE_TIMERFD
3259 if (ev_is_active (&timerfd_w))
3260 close (timerfd);
3261#endif
3262
2348#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
2349 if (fs_fd >= 0) 3264 if (fs_fd >= 0)
2350 close (fs_fd); 3265 close (fs_fd);
2351#endif 3266#endif
2352 3267
2353 if (backend_fd >= 0) 3268 if (backend_fd >= 0)
2354 close (backend_fd); 3269 close (backend_fd);
2355 3270
2356#if EV_USE_IOCP 3271#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3272 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif 3273#endif
2359#if EV_USE_PORT 3274#if EV_USE_PORT
2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3275 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2361#endif 3276#endif
2362#if EV_USE_KQUEUE 3277#if EV_USE_KQUEUE
2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3278 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3279#endif
3280#if EV_USE_IOURING
3281 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3282#endif
3283#if EV_USE_LINUXAIO
3284 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2364#endif 3285#endif
2365#if EV_USE_EPOLL 3286#if EV_USE_EPOLL
2366 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3287 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2367#endif 3288#endif
2368#if EV_USE_POLL 3289#if EV_USE_POLL
2369 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3290 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2370#endif 3291#endif
2371#if EV_USE_SELECT 3292#if EV_USE_SELECT
2372 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3293 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2373#endif 3294#endif
2374 3295
2375 for (i = NUMPRI; i--; ) 3296 for (i = NUMPRI; i--; )
2376 { 3297 {
2377 array_free (pending, [i]); 3298 array_free (pending, [i]);
… …
2419 3340
2420inline_size void 3341inline_size void
2421loop_fork (EV_P) 3342loop_fork (EV_P)
2422{ 3343{
2423#if EV_USE_PORT 3344#if EV_USE_PORT
2424 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3345 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2425#endif 3346#endif
2426#if EV_USE_KQUEUE 3347#if EV_USE_KQUEUE
2427 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3348 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3349#endif
3350#if EV_USE_IOURING
3351 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3352#endif
3353#if EV_USE_LINUXAIO
3354 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2428#endif 3355#endif
2429#if EV_USE_EPOLL 3356#if EV_USE_EPOLL
2430 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3357 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2431#endif 3358#endif
2432#if EV_USE_INOTIFY 3359#if EV_USE_INOTIFY
2433 infy_fork (EV_A); 3360 infy_fork (EV_A);
2434#endif 3361#endif
2435 3362
3363 if (postfork != 2)
3364 {
3365 #if EV_USE_SIGNALFD
3366 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3367 #endif
3368
3369 #if EV_USE_TIMERFD
3370 if (ev_is_active (&timerfd_w))
3371 {
3372 ev_ref (EV_A);
3373 ev_io_stop (EV_A_ &timerfd_w);
3374
3375 close (timerfd);
3376 timerfd = -2;
3377
3378 evtimerfd_init (EV_A);
3379 /* reschedule periodics, in case we missed something */
3380 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3381 }
3382 #endif
3383
3384 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2436 if (ev_is_active (&pipe_w)) 3385 if (ev_is_active (&pipe_w))
2437 { 3386 {
2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3387 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2439 3388
2440 ev_ref (EV_A); 3389 ev_ref (EV_A);
2441 ev_io_stop (EV_A_ &pipe_w); 3390 ev_io_stop (EV_A_ &pipe_w);
2442 3391
2443#if EV_USE_EVENTFD
2444 if (evfd >= 0)
2445 close (evfd);
2446#endif
2447
2448 if (evpipe [0] >= 0) 3392 if (evpipe [0] >= 0)
2449 {
2450 EV_WIN32_CLOSE_FD (evpipe [0]); 3393 EV_WIN32_CLOSE_FD (evpipe [0]);
2451 EV_WIN32_CLOSE_FD (evpipe [1]); 3394
3395 evpipe_init (EV_A);
3396 /* iterate over everything, in case we missed something before */
3397 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2452 } 3398 }
2453 3399 #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 } 3400 }
2460 3401
2461 postfork = 0; 3402 postfork = 0;
2462} 3403}
2463 3404
2464#if EV_MULTIPLICITY 3405#if EV_MULTIPLICITY
2465 3406
3407ecb_cold
2466struct ev_loop * ecb_cold 3408struct ev_loop *
2467ev_loop_new (unsigned int flags) 3409ev_loop_new (unsigned int flags) EV_NOEXCEPT
2468{ 3410{
2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3411 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2470 3412
2471 memset (EV_A, 0, sizeof (struct ev_loop)); 3413 memset (EV_A, 0, sizeof (struct ev_loop));
2472 loop_init (EV_A_ flags); 3414 loop_init (EV_A_ flags);
… …
2479} 3421}
2480 3422
2481#endif /* multiplicity */ 3423#endif /* multiplicity */
2482 3424
2483#if EV_VERIFY 3425#if EV_VERIFY
2484static void noinline ecb_cold 3426ecb_noinline ecb_cold
3427static void
2485verify_watcher (EV_P_ W w) 3428verify_watcher (EV_P_ W w)
2486{ 3429{
2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3430 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2488 3431
2489 if (w->pending) 3432 if (w->pending)
2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3433 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2491} 3434}
2492 3435
2493static void noinline ecb_cold 3436ecb_noinline ecb_cold
3437static void
2494verify_heap (EV_P_ ANHE *heap, int N) 3438verify_heap (EV_P_ ANHE *heap, int N)
2495{ 3439{
2496 int i; 3440 int i;
2497 3441
2498 for (i = HEAP0; i < N + HEAP0; ++i) 3442 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2503 3447
2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3448 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2505 } 3449 }
2506} 3450}
2507 3451
2508static void noinline ecb_cold 3452ecb_noinline ecb_cold
3453static void
2509array_verify (EV_P_ W *ws, int cnt) 3454array_verify (EV_P_ W *ws, int cnt)
2510{ 3455{
2511 while (cnt--) 3456 while (cnt--)
2512 { 3457 {
2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3458 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2516} 3461}
2517#endif 3462#endif
2518 3463
2519#if EV_FEATURE_API 3464#if EV_FEATURE_API
2520void ecb_cold 3465void ecb_cold
2521ev_verify (EV_P) 3466ev_verify (EV_P) EV_NOEXCEPT
2522{ 3467{
2523#if EV_VERIFY 3468#if EV_VERIFY
2524 int i; 3469 int i;
2525 WL w; 3470 WL w, w2;
2526 3471
2527 assert (activecnt >= -1); 3472 assert (activecnt >= -1);
2528 3473
2529 assert (fdchangemax >= fdchangecnt); 3474 assert (fdchangemax >= fdchangecnt);
2530 for (i = 0; i < fdchangecnt; ++i) 3475 for (i = 0; i < fdchangecnt; ++i)
2531 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3476 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2532 3477
2533 assert (anfdmax >= 0); 3478 assert (anfdmax >= 0);
2534 for (i = 0; i < anfdmax; ++i) 3479 for (i = 0; i < anfdmax; ++i)
3480 {
3481 int j = 0;
3482
2535 for (w = anfds [i].head; w; w = w->next) 3483 for (w = w2 = anfds [i].head; w; w = w->next)
2536 { 3484 {
2537 verify_watcher (EV_A_ (W)w); 3485 verify_watcher (EV_A_ (W)w);
3486
3487 if (j++ & 1)
3488 {
3489 assert (("libev: io watcher list contains a loop", w != w2));
3490 w2 = w2->next;
3491 }
3492
2538 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3493 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)); 3494 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2540 } 3495 }
3496 }
2541 3497
2542 assert (timermax >= timercnt); 3498 assert (timermax >= timercnt);
2543 verify_heap (EV_A_ timers, timercnt); 3499 verify_heap (EV_A_ timers, timercnt);
2544 3500
2545#if EV_PERIODIC_ENABLE 3501#if EV_PERIODIC_ENABLE
… …
2591#endif 3547#endif
2592} 3548}
2593#endif 3549#endif
2594 3550
2595#if EV_MULTIPLICITY 3551#if EV_MULTIPLICITY
3552ecb_cold
2596struct ev_loop * ecb_cold 3553struct ev_loop *
2597#else 3554#else
2598int 3555int
2599#endif 3556#endif
2600ev_default_loop (unsigned int flags) 3557ev_default_loop (unsigned int flags) EV_NOEXCEPT
2601{ 3558{
2602 if (!ev_default_loop_ptr) 3559 if (!ev_default_loop_ptr)
2603 { 3560 {
2604#if EV_MULTIPLICITY 3561#if EV_MULTIPLICITY
2605 EV_P = ev_default_loop_ptr = &default_loop_struct; 3562 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2624 3581
2625 return ev_default_loop_ptr; 3582 return ev_default_loop_ptr;
2626} 3583}
2627 3584
2628void 3585void
2629ev_loop_fork (EV_P) 3586ev_loop_fork (EV_P) EV_NOEXCEPT
2630{ 3587{
2631 postfork = 1; /* must be in line with ev_default_fork */ 3588 postfork = 1;
2632} 3589}
2633 3590
2634/*****************************************************************************/ 3591/*****************************************************************************/
2635 3592
2636void 3593void
… …
2638{ 3595{
2639 EV_CB_INVOKE ((W)w, revents); 3596 EV_CB_INVOKE ((W)w, revents);
2640} 3597}
2641 3598
2642unsigned int 3599unsigned int
2643ev_pending_count (EV_P) 3600ev_pending_count (EV_P) EV_NOEXCEPT
2644{ 3601{
2645 int pri; 3602 int pri;
2646 unsigned int count = 0; 3603 unsigned int count = 0;
2647 3604
2648 for (pri = NUMPRI; pri--; ) 3605 for (pri = NUMPRI; pri--; )
2649 count += pendingcnt [pri]; 3606 count += pendingcnt [pri];
2650 3607
2651 return count; 3608 return count;
2652} 3609}
2653 3610
2654void noinline 3611ecb_noinline
3612void
2655ev_invoke_pending (EV_P) 3613ev_invoke_pending (EV_P)
2656{ 3614{
2657 int pri; 3615 pendingpri = NUMPRI;
2658 3616
2659 for (pri = NUMPRI; pri--; ) 3617 do
3618 {
3619 --pendingpri;
3620
3621 /* pendingpri possibly gets modified in the inner loop */
2660 while (pendingcnt [pri]) 3622 while (pendingcnt [pendingpri])
2661 { 3623 {
2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3624 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2663 3625
2664 p->w->pending = 0; 3626 p->w->pending = 0;
2665 EV_CB_INVOKE (p->w, p->events); 3627 EV_CB_INVOKE (p->w, p->events);
2666 EV_FREQUENT_CHECK; 3628 EV_FREQUENT_CHECK;
2667 } 3629 }
3630 }
3631 while (pendingpri);
2668} 3632}
2669 3633
2670#if EV_IDLE_ENABLE 3634#if EV_IDLE_ENABLE
2671/* make idle watchers pending. this handles the "call-idle */ 3635/* make idle watchers pending. this handles the "call-idle */
2672/* only when higher priorities are idle" logic */ 3636/* only when higher priorities are idle" logic */
2673inline_size void 3637inline_size void
2674idle_reify (EV_P) 3638idle_reify (EV_P)
2675{ 3639{
2676 if (expect_false (idleall)) 3640 if (ecb_expect_false (idleall))
2677 { 3641 {
2678 int pri; 3642 int pri;
2679 3643
2680 for (pri = NUMPRI; pri--; ) 3644 for (pri = NUMPRI; pri--; )
2681 { 3645 {
… …
2711 { 3675 {
2712 ev_at (w) += w->repeat; 3676 ev_at (w) += w->repeat;
2713 if (ev_at (w) < mn_now) 3677 if (ev_at (w) < mn_now)
2714 ev_at (w) = mn_now; 3678 ev_at (w) = mn_now;
2715 3679
2716 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3680 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2717 3681
2718 ANHE_at_cache (timers [HEAP0]); 3682 ANHE_at_cache (timers [HEAP0]);
2719 downheap (timers, timercnt, HEAP0); 3683 downheap (timers, timercnt, HEAP0);
2720 } 3684 }
2721 else 3685 else
… …
2730 } 3694 }
2731} 3695}
2732 3696
2733#if EV_PERIODIC_ENABLE 3697#if EV_PERIODIC_ENABLE
2734 3698
2735static void noinline 3699ecb_noinline
3700static void
2736periodic_recalc (EV_P_ ev_periodic *w) 3701periodic_recalc (EV_P_ ev_periodic *w)
2737{ 3702{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3703 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); 3704 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740 3705
… …
2742 while (at <= ev_rt_now) 3707 while (at <= ev_rt_now)
2743 { 3708 {
2744 ev_tstamp nat = at + w->interval; 3709 ev_tstamp nat = at + w->interval;
2745 3710
2746 /* when resolution fails us, we use ev_rt_now */ 3711 /* when resolution fails us, we use ev_rt_now */
2747 if (expect_false (nat == at)) 3712 if (ecb_expect_false (nat == at))
2748 { 3713 {
2749 at = ev_rt_now; 3714 at = ev_rt_now;
2750 break; 3715 break;
2751 } 3716 }
2752 3717
… …
2762{ 3727{
2763 EV_FREQUENT_CHECK; 3728 EV_FREQUENT_CHECK;
2764 3729
2765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3730 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2766 { 3731 {
2767 int feed_count = 0;
2768
2769 do 3732 do
2770 { 3733 {
2771 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2772 3735
2773 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2800 } 3763 }
2801} 3764}
2802 3765
2803/* simply recalculate all periodics */ 3766/* simply recalculate all periodics */
2804/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3767/* TODO: maybe ensure that at least one event happens when jumping forward? */
2805static void noinline ecb_cold 3768ecb_noinline ecb_cold
3769static void
2806periodics_reschedule (EV_P) 3770periodics_reschedule (EV_P)
2807{ 3771{
2808 int i; 3772 int i;
2809 3773
2810 /* adjust periodics after time jump */ 3774 /* adjust periodics after time jump */
… …
2823 reheap (periodics, periodiccnt); 3787 reheap (periodics, periodiccnt);
2824} 3788}
2825#endif 3789#endif
2826 3790
2827/* adjust all timers by a given offset */ 3791/* adjust all timers by a given offset */
2828static void noinline ecb_cold 3792ecb_noinline ecb_cold
3793static void
2829timers_reschedule (EV_P_ ev_tstamp adjust) 3794timers_reschedule (EV_P_ ev_tstamp adjust)
2830{ 3795{
2831 int i; 3796 int i;
2832 3797
2833 for (i = 0; i < timercnt; ++i) 3798 for (i = 0; i < timercnt; ++i)
… …
2842/* also detect if there was a timejump, and act accordingly */ 3807/* also detect if there was a timejump, and act accordingly */
2843inline_speed void 3808inline_speed void
2844time_update (EV_P_ ev_tstamp max_block) 3809time_update (EV_P_ ev_tstamp max_block)
2845{ 3810{
2846#if EV_USE_MONOTONIC 3811#if EV_USE_MONOTONIC
2847 if (expect_true (have_monotonic)) 3812 if (ecb_expect_true (have_monotonic))
2848 { 3813 {
2849 int i; 3814 int i;
2850 ev_tstamp odiff = rtmn_diff; 3815 ev_tstamp odiff = rtmn_diff;
2851 3816
2852 mn_now = get_clock (); 3817 mn_now = get_clock ();
2853 3818
2854 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3819 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2855 /* interpolate in the meantime */ 3820 /* interpolate in the meantime */
2856 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3821 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2857 { 3822 {
2858 ev_rt_now = rtmn_diff + mn_now; 3823 ev_rt_now = rtmn_diff + mn_now;
2859 return; 3824 return;
2860 } 3825 }
2861 3826
… …
2875 ev_tstamp diff; 3840 ev_tstamp diff;
2876 rtmn_diff = ev_rt_now - mn_now; 3841 rtmn_diff = ev_rt_now - mn_now;
2877 3842
2878 diff = odiff - rtmn_diff; 3843 diff = odiff - rtmn_diff;
2879 3844
2880 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3845 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2881 return; /* all is well */ 3846 return; /* all is well */
2882 3847
2883 ev_rt_now = ev_time (); 3848 ev_rt_now = ev_time ();
2884 mn_now = get_clock (); 3849 mn_now = get_clock ();
2885 now_floor = mn_now; 3850 now_floor = mn_now;
… …
2894 else 3859 else
2895#endif 3860#endif
2896 { 3861 {
2897 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
2898 3863
2899 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3864 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2900 { 3865 {
2901 /* adjust timers. this is easy, as the offset is the same for all of them */ 3866 /* 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); 3867 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2903#if EV_PERIODIC_ENABLE 3868#if EV_PERIODIC_ENABLE
2904 periodics_reschedule (EV_A); 3869 periodics_reschedule (EV_A);
… …
2907 3872
2908 mn_now = ev_rt_now; 3873 mn_now = ev_rt_now;
2909 } 3874 }
2910} 3875}
2911 3876
2912void 3877int
2913ev_run (EV_P_ int flags) 3878ev_run (EV_P_ int flags)
2914{ 3879{
2915#if EV_FEATURE_API 3880#if EV_FEATURE_API
2916 ++loop_depth; 3881 ++loop_depth;
2917#endif 3882#endif
… …
2927#if EV_VERIFY >= 2 3892#if EV_VERIFY >= 2
2928 ev_verify (EV_A); 3893 ev_verify (EV_A);
2929#endif 3894#endif
2930 3895
2931#ifndef _WIN32 3896#ifndef _WIN32
2932 if (expect_false (curpid)) /* penalise the forking check even more */ 3897 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2933 if (expect_false (getpid () != curpid)) 3898 if (ecb_expect_false (getpid () != curpid))
2934 { 3899 {
2935 curpid = getpid (); 3900 curpid = getpid ();
2936 postfork = 1; 3901 postfork = 1;
2937 } 3902 }
2938#endif 3903#endif
2939 3904
2940#if EV_FORK_ENABLE 3905#if EV_FORK_ENABLE
2941 /* we might have forked, so queue fork handlers */ 3906 /* we might have forked, so queue fork handlers */
2942 if (expect_false (postfork)) 3907 if (ecb_expect_false (postfork))
2943 if (forkcnt) 3908 if (forkcnt)
2944 { 3909 {
2945 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3910 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2946 EV_INVOKE_PENDING; 3911 EV_INVOKE_PENDING;
2947 } 3912 }
2948#endif 3913#endif
2949 3914
2950#if EV_PREPARE_ENABLE 3915#if EV_PREPARE_ENABLE
2951 /* queue prepare watchers (and execute them) */ 3916 /* queue prepare watchers (and execute them) */
2952 if (expect_false (preparecnt)) 3917 if (ecb_expect_false (preparecnt))
2953 { 3918 {
2954 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3919 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2955 EV_INVOKE_PENDING; 3920 EV_INVOKE_PENDING;
2956 } 3921 }
2957#endif 3922#endif
2958 3923
2959 if (expect_false (loop_done)) 3924 if (ecb_expect_false (loop_done))
2960 break; 3925 break;
2961 3926
2962 /* we might have forked, so reify kernel state if necessary */ 3927 /* we might have forked, so reify kernel state if necessary */
2963 if (expect_false (postfork)) 3928 if (ecb_expect_false (postfork))
2964 loop_fork (EV_A); 3929 loop_fork (EV_A);
2965 3930
2966 /* update fd-related kernel structures */ 3931 /* update fd-related kernel structures */
2967 fd_reify (EV_A); 3932 fd_reify (EV_A);
2968 3933
… …
2973 3938
2974 /* remember old timestamp for io_blocktime calculation */ 3939 /* remember old timestamp for io_blocktime calculation */
2975 ev_tstamp prev_mn_now = mn_now; 3940 ev_tstamp prev_mn_now = mn_now;
2976 3941
2977 /* update time to cancel out callback processing overhead */ 3942 /* update time to cancel out callback processing overhead */
2978 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2979 3944
2980 /* from now on, we want a pipe-wake-up */ 3945 /* from now on, we want a pipe-wake-up */
2981 pipe_write_wanted = 1; 3946 pipe_write_wanted = 1;
2982 3947
2983 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3948 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2984 3949
2985 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3950 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2986 { 3951 {
2987 waittime = MAX_BLOCKTIME; 3952 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2988 3953
2989 if (timercnt) 3954 if (timercnt)
2990 { 3955 {
2991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3956 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2992 if (waittime > to) waittime = to; 3957 if (waittime > to) waittime = to;
… …
2999 if (waittime > to) waittime = to; 3964 if (waittime > to) waittime = to;
3000 } 3965 }
3001#endif 3966#endif
3002 3967
3003 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3968 /* don't let timeouts decrease the waittime below timeout_blocktime */
3004 if (expect_false (waittime < timeout_blocktime)) 3969 if (ecb_expect_false (waittime < timeout_blocktime))
3005 waittime = timeout_blocktime; 3970 waittime = timeout_blocktime;
3006 3971
3007 /* at this point, we NEED to wait, so we have to ensure */ 3972 /* now there are two more special cases left, either we have
3008 /* to pass a minimum nonzero value to the backend */ 3973 * already-expired timers, so we should not sleep, or we have timers
3974 * that expire very soon, in which case we need to wait for a minimum
3975 * amount of time for some event loop backends.
3976 */
3009 if (expect_false (waittime < backend_mintime)) 3977 if (ecb_expect_false (waittime < backend_mintime))
3978 waittime = waittime <= EV_TS_CONST (0.)
3979 ? EV_TS_CONST (0.)
3010 waittime = backend_mintime; 3980 : backend_mintime;
3011 3981
3012 /* extra check because io_blocktime is commonly 0 */ 3982 /* extra check because io_blocktime is commonly 0 */
3013 if (expect_false (io_blocktime)) 3983 if (ecb_expect_false (io_blocktime))
3014 { 3984 {
3015 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3985 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3016 3986
3017 if (sleeptime > waittime - backend_mintime) 3987 if (sleeptime > waittime - backend_mintime)
3018 sleeptime = waittime - backend_mintime; 3988 sleeptime = waittime - backend_mintime;
3019 3989
3020 if (expect_true (sleeptime > 0.)) 3990 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3021 { 3991 {
3022 ev_sleep (sleeptime); 3992 ev_sleep (sleeptime);
3023 waittime -= sleeptime; 3993 waittime -= sleeptime;
3024 } 3994 }
3025 } 3995 }
… …
3032 backend_poll (EV_A_ waittime); 4002 backend_poll (EV_A_ waittime);
3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4003 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034 4004
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 4005 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036 4006
4007 ECB_MEMORY_FENCE_ACQUIRE;
3037 if (pipe_write_skipped) 4008 if (pipe_write_skipped)
3038 { 4009 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4010 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); 4011 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 } 4012 }
3042 4013
3043
3044 /* update ev_rt_now, do magic */ 4014 /* update ev_rt_now, do magic */
3045 time_update (EV_A_ waittime + sleeptime); 4015 time_update (EV_A_ waittime + sleeptime);
3046 } 4016 }
3047 4017
3048 /* queue pending timers and reschedule them */ 4018 /* queue pending timers and reschedule them */
… …
3056 idle_reify (EV_A); 4026 idle_reify (EV_A);
3057#endif 4027#endif
3058 4028
3059#if EV_CHECK_ENABLE 4029#if EV_CHECK_ENABLE
3060 /* queue check watchers, to be executed first */ 4030 /* queue check watchers, to be executed first */
3061 if (expect_false (checkcnt)) 4031 if (ecb_expect_false (checkcnt))
3062 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3063#endif 4033#endif
3064 4034
3065 EV_INVOKE_PENDING; 4035 EV_INVOKE_PENDING;
3066 } 4036 }
3067 while (expect_true ( 4037 while (ecb_expect_true (
3068 activecnt 4038 activecnt
3069 && !loop_done 4039 && !loop_done
3070 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4040 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3071 )); 4041 ));
3072 4042
… …
3074 loop_done = EVBREAK_CANCEL; 4044 loop_done = EVBREAK_CANCEL;
3075 4045
3076#if EV_FEATURE_API 4046#if EV_FEATURE_API
3077 --loop_depth; 4047 --loop_depth;
3078#endif 4048#endif
3079}
3080 4049
4050 return activecnt;
4051}
4052
3081void 4053void
3082ev_break (EV_P_ int how) 4054ev_break (EV_P_ int how) EV_NOEXCEPT
3083{ 4055{
3084 loop_done = how; 4056 loop_done = how;
3085} 4057}
3086 4058
3087void 4059void
3088ev_ref (EV_P) 4060ev_ref (EV_P) EV_NOEXCEPT
3089{ 4061{
3090 ++activecnt; 4062 ++activecnt;
3091} 4063}
3092 4064
3093void 4065void
3094ev_unref (EV_P) 4066ev_unref (EV_P) EV_NOEXCEPT
3095{ 4067{
3096 --activecnt; 4068 --activecnt;
3097} 4069}
3098 4070
3099void 4071void
3100ev_now_update (EV_P) 4072ev_now_update (EV_P) EV_NOEXCEPT
3101{ 4073{
3102 time_update (EV_A_ 1e100); 4074 time_update (EV_A_ EV_TSTAMP_HUGE);
3103} 4075}
3104 4076
3105void 4077void
3106ev_suspend (EV_P) 4078ev_suspend (EV_P) EV_NOEXCEPT
3107{ 4079{
3108 ev_now_update (EV_A); 4080 ev_now_update (EV_A);
3109} 4081}
3110 4082
3111void 4083void
3112ev_resume (EV_P) 4084ev_resume (EV_P) EV_NOEXCEPT
3113{ 4085{
3114 ev_tstamp mn_prev = mn_now; 4086 ev_tstamp mn_prev = mn_now;
3115 4087
3116 ev_now_update (EV_A); 4088 ev_now_update (EV_A);
3117 timers_reschedule (EV_A_ mn_now - mn_prev); 4089 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3134inline_size void 4106inline_size void
3135wlist_del (WL *head, WL elem) 4107wlist_del (WL *head, WL elem)
3136{ 4108{
3137 while (*head) 4109 while (*head)
3138 { 4110 {
3139 if (expect_true (*head == elem)) 4111 if (ecb_expect_true (*head == elem))
3140 { 4112 {
3141 *head = elem->next; 4113 *head = elem->next;
3142 break; 4114 break;
3143 } 4115 }
3144 4116
… …
3156 w->pending = 0; 4128 w->pending = 0;
3157 } 4129 }
3158} 4130}
3159 4131
3160int 4132int
3161ev_clear_pending (EV_P_ void *w) 4133ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3162{ 4134{
3163 W w_ = (W)w; 4135 W w_ = (W)w;
3164 int pending = w_->pending; 4136 int pending = w_->pending;
3165 4137
3166 if (expect_true (pending)) 4138 if (ecb_expect_true (pending))
3167 { 4139 {
3168 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4140 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3169 p->w = (W)&pending_w; 4141 p->w = (W)&pending_w;
3170 w_->pending = 0; 4142 w_->pending = 0;
3171 return p->events; 4143 return p->events;
… …
3198 w->active = 0; 4170 w->active = 0;
3199} 4171}
3200 4172
3201/*****************************************************************************/ 4173/*****************************************************************************/
3202 4174
3203void noinline 4175ecb_noinline
4176void
3204ev_io_start (EV_P_ ev_io *w) 4177ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3205{ 4178{
3206 int fd = w->fd; 4179 int fd = w->fd;
3207 4180
3208 if (expect_false (ev_is_active (w))) 4181 if (ecb_expect_false (ev_is_active (w)))
3209 return; 4182 return;
3210 4183
3211 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4184 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)))); 4185 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3213 4186
4187#if EV_VERIFY >= 2
4188 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4189#endif
3214 EV_FREQUENT_CHECK; 4190 EV_FREQUENT_CHECK;
3215 4191
3216 ev_start (EV_A_ (W)w, 1); 4192 ev_start (EV_A_ (W)w, 1);
3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4193 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3218 wlist_add (&anfds[fd].head, (WL)w); 4194 wlist_add (&anfds[fd].head, (WL)w);
4195
4196 /* common bug, apparently */
4197 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3219 4198
3220 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4199 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3221 w->events &= ~EV__IOFDSET; 4200 w->events &= ~EV__IOFDSET;
3222 4201
3223 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
3224} 4203}
3225 4204
3226void noinline 4205ecb_noinline
4206void
3227ev_io_stop (EV_P_ ev_io *w) 4207ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3228{ 4208{
3229 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
3230 if (expect_false (!ev_is_active (w))) 4210 if (ecb_expect_false (!ev_is_active (w)))
3231 return; 4211 return;
3232 4212
3233 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4213 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3234 4214
4215#if EV_VERIFY >= 2
4216 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4217#endif
3235 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
3236 4219
3237 wlist_del (&anfds[w->fd].head, (WL)w); 4220 wlist_del (&anfds[w->fd].head, (WL)w);
3238 ev_stop (EV_A_ (W)w); 4221 ev_stop (EV_A_ (W)w);
3239 4222
3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4223 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3241 4224
3242 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
3243} 4226}
3244 4227
3245void noinline 4228ecb_noinline
4229void
3246ev_timer_start (EV_P_ ev_timer *w) 4230ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3247{ 4231{
3248 if (expect_false (ev_is_active (w))) 4232 if (ecb_expect_false (ev_is_active (w)))
3249 return; 4233 return;
3250 4234
3251 ev_at (w) += mn_now; 4235 ev_at (w) += mn_now;
3252 4236
3253 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4237 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3254 4238
3255 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
3256 4240
3257 ++timercnt; 4241 ++timercnt;
3258 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4242 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3259 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4243 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3260 ANHE_w (timers [ev_active (w)]) = (WT)w; 4244 ANHE_w (timers [ev_active (w)]) = (WT)w;
3261 ANHE_at_cache (timers [ev_active (w)]); 4245 ANHE_at_cache (timers [ev_active (w)]);
3262 upheap (timers, ev_active (w)); 4246 upheap (timers, ev_active (w));
3263 4247
3264 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
3265 4249
3266 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4250 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3267} 4251}
3268 4252
3269void noinline 4253ecb_noinline
4254void
3270ev_timer_stop (EV_P_ ev_timer *w) 4255ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3271{ 4256{
3272 clear_pending (EV_A_ (W)w); 4257 clear_pending (EV_A_ (W)w);
3273 if (expect_false (!ev_is_active (w))) 4258 if (ecb_expect_false (!ev_is_active (w)))
3274 return; 4259 return;
3275 4260
3276 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3277 4262
3278 { 4263 {
… …
3280 4265
3281 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4266 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3282 4267
3283 --timercnt; 4268 --timercnt;
3284 4269
3285 if (expect_true (active < timercnt + HEAP0)) 4270 if (ecb_expect_true (active < timercnt + HEAP0))
3286 { 4271 {
3287 timers [active] = timers [timercnt + HEAP0]; 4272 timers [active] = timers [timercnt + HEAP0];
3288 adjustheap (timers, timercnt, active); 4273 adjustheap (timers, timercnt, active);
3289 } 4274 }
3290 } 4275 }
… …
3294 ev_stop (EV_A_ (W)w); 4279 ev_stop (EV_A_ (W)w);
3295 4280
3296 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
3297} 4282}
3298 4283
3299void noinline 4284ecb_noinline
4285void
3300ev_timer_again (EV_P_ ev_timer *w) 4286ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3301{ 4287{
3302 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
4289
4290 clear_pending (EV_A_ (W)w);
3303 4291
3304 if (ev_is_active (w)) 4292 if (ev_is_active (w))
3305 { 4293 {
3306 if (w->repeat) 4294 if (w->repeat)
3307 { 4295 {
… …
3320 4308
3321 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
3322} 4310}
3323 4311
3324ev_tstamp 4312ev_tstamp
3325ev_timer_remaining (EV_P_ ev_timer *w) 4313ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3326{ 4314{
3327 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4315 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3328} 4316}
3329 4317
3330#if EV_PERIODIC_ENABLE 4318#if EV_PERIODIC_ENABLE
3331void noinline 4319ecb_noinline
4320void
3332ev_periodic_start (EV_P_ ev_periodic *w) 4321ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3333{ 4322{
3334 if (expect_false (ev_is_active (w))) 4323 if (ecb_expect_false (ev_is_active (w)))
3335 return; 4324 return;
4325
4326#if EV_USE_TIMERFD
4327 if (timerfd == -2)
4328 evtimerfd_init (EV_A);
4329#endif
3336 4330
3337 if (w->reschedule_cb) 4331 if (w->reschedule_cb)
3338 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4332 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3339 else if (w->interval) 4333 else if (w->interval)
3340 { 4334 {
… …
3346 4340
3347 EV_FREQUENT_CHECK; 4341 EV_FREQUENT_CHECK;
3348 4342
3349 ++periodiccnt; 4343 ++periodiccnt;
3350 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4344 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3351 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4345 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3352 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4346 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3353 ANHE_at_cache (periodics [ev_active (w)]); 4347 ANHE_at_cache (periodics [ev_active (w)]);
3354 upheap (periodics, ev_active (w)); 4348 upheap (periodics, ev_active (w));
3355 4349
3356 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3357 4351
3358 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4352 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3359} 4353}
3360 4354
3361void noinline 4355ecb_noinline
4356void
3362ev_periodic_stop (EV_P_ ev_periodic *w) 4357ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3363{ 4358{
3364 clear_pending (EV_A_ (W)w); 4359 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4360 if (ecb_expect_false (!ev_is_active (w)))
3366 return; 4361 return;
3367 4362
3368 EV_FREQUENT_CHECK; 4363 EV_FREQUENT_CHECK;
3369 4364
3370 { 4365 {
… …
3372 4367
3373 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4368 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3374 4369
3375 --periodiccnt; 4370 --periodiccnt;
3376 4371
3377 if (expect_true (active < periodiccnt + HEAP0)) 4372 if (ecb_expect_true (active < periodiccnt + HEAP0))
3378 { 4373 {
3379 periodics [active] = periodics [periodiccnt + HEAP0]; 4374 periodics [active] = periodics [periodiccnt + HEAP0];
3380 adjustheap (periodics, periodiccnt, active); 4375 adjustheap (periodics, periodiccnt, active);
3381 } 4376 }
3382 } 4377 }
… …
3384 ev_stop (EV_A_ (W)w); 4379 ev_stop (EV_A_ (W)w);
3385 4380
3386 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
3387} 4382}
3388 4383
3389void noinline 4384ecb_noinline
4385void
3390ev_periodic_again (EV_P_ ev_periodic *w) 4386ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3391{ 4387{
3392 /* TODO: use adjustheap and recalculation */ 4388 /* TODO: use adjustheap and recalculation */
3393 ev_periodic_stop (EV_A_ w); 4389 ev_periodic_stop (EV_A_ w);
3394 ev_periodic_start (EV_A_ w); 4390 ev_periodic_start (EV_A_ w);
3395} 4391}
… …
3399# define SA_RESTART 0 4395# define SA_RESTART 0
3400#endif 4396#endif
3401 4397
3402#if EV_SIGNAL_ENABLE 4398#if EV_SIGNAL_ENABLE
3403 4399
3404void noinline 4400ecb_noinline
4401void
3405ev_signal_start (EV_P_ ev_signal *w) 4402ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3406{ 4403{
3407 if (expect_false (ev_is_active (w))) 4404 if (ecb_expect_false (ev_is_active (w)))
3408 return; 4405 return;
3409 4406
3410 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4407 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3411 4408
3412#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
3413 assert (("libev: a signal must not be attached to two different loops", 4410 assert (("libev: a signal must not be attached to two different loops",
3414 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4411 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3415 4412
3416 signals [w->signum - 1].loop = EV_A; 4413 signals [w->signum - 1].loop = EV_A;
4414 ECB_MEMORY_FENCE_RELEASE;
3417#endif 4415#endif
3418 4416
3419 EV_FREQUENT_CHECK; 4417 EV_FREQUENT_CHECK;
3420 4418
3421#if EV_USE_SIGNALFD 4419#if EV_USE_SIGNALFD
… …
3480 } 4478 }
3481 4479
3482 EV_FREQUENT_CHECK; 4480 EV_FREQUENT_CHECK;
3483} 4481}
3484 4482
3485void noinline 4483ecb_noinline
4484void
3486ev_signal_stop (EV_P_ ev_signal *w) 4485ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3487{ 4486{
3488 clear_pending (EV_A_ (W)w); 4487 clear_pending (EV_A_ (W)w);
3489 if (expect_false (!ev_is_active (w))) 4488 if (ecb_expect_false (!ev_is_active (w)))
3490 return; 4489 return;
3491 4490
3492 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
3493 4492
3494 wlist_del (&signals [w->signum - 1].head, (WL)w); 4493 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3522#endif 4521#endif
3523 4522
3524#if EV_CHILD_ENABLE 4523#if EV_CHILD_ENABLE
3525 4524
3526void 4525void
3527ev_child_start (EV_P_ ev_child *w) 4526ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3528{ 4527{
3529#if EV_MULTIPLICITY 4528#if EV_MULTIPLICITY
3530 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4529 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3531#endif 4530#endif
3532 if (expect_false (ev_is_active (w))) 4531 if (ecb_expect_false (ev_is_active (w)))
3533 return; 4532 return;
3534 4533
3535 EV_FREQUENT_CHECK; 4534 EV_FREQUENT_CHECK;
3536 4535
3537 ev_start (EV_A_ (W)w, 1); 4536 ev_start (EV_A_ (W)w, 1);
… …
3539 4538
3540 EV_FREQUENT_CHECK; 4539 EV_FREQUENT_CHECK;
3541} 4540}
3542 4541
3543void 4542void
3544ev_child_stop (EV_P_ ev_child *w) 4543ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3545{ 4544{
3546 clear_pending (EV_A_ (W)w); 4545 clear_pending (EV_A_ (W)w);
3547 if (expect_false (!ev_is_active (w))) 4546 if (ecb_expect_false (!ev_is_active (w)))
3548 return; 4547 return;
3549 4548
3550 EV_FREQUENT_CHECK; 4549 EV_FREQUENT_CHECK;
3551 4550
3552 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4551 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3566 4565
3567#define DEF_STAT_INTERVAL 5.0074891 4566#define DEF_STAT_INTERVAL 5.0074891
3568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4567#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3569#define MIN_STAT_INTERVAL 0.1074891 4568#define MIN_STAT_INTERVAL 0.1074891
3570 4569
3571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4570ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3572 4571
3573#if EV_USE_INOTIFY 4572#if EV_USE_INOTIFY
3574 4573
3575/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4574/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3576# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4575# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3577 4576
3578static void noinline 4577ecb_noinline
4578static void
3579infy_add (EV_P_ ev_stat *w) 4579infy_add (EV_P_ ev_stat *w)
3580{ 4580{
3581 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); 4581 w->wd = inotify_add_watch (fs_fd, w->path,
4582 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4583 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4584 | IN_DONT_FOLLOW | IN_MASK_ADD);
3582 4585
3583 if (w->wd >= 0) 4586 if (w->wd >= 0)
3584 { 4587 {
3585 struct statfs sfs; 4588 struct statfs sfs;
3586 4589
… …
3590 4593
3591 if (!fs_2625) 4594 if (!fs_2625)
3592 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4595 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3593 else if (!statfs (w->path, &sfs) 4596 else if (!statfs (w->path, &sfs)
3594 && (sfs.f_type == 0x1373 /* devfs */ 4597 && (sfs.f_type == 0x1373 /* devfs */
4598 || sfs.f_type == 0x4006 /* fat */
4599 || sfs.f_type == 0x4d44 /* msdos */
3595 || sfs.f_type == 0xEF53 /* ext2/3 */ 4600 || sfs.f_type == 0xEF53 /* ext2/3 */
4601 || sfs.f_type == 0x72b6 /* jffs2 */
4602 || sfs.f_type == 0x858458f6 /* ramfs */
4603 || sfs.f_type == 0x5346544e /* ntfs */
3596 || sfs.f_type == 0x3153464a /* jfs */ 4604 || sfs.f_type == 0x3153464a /* jfs */
4605 || sfs.f_type == 0x9123683e /* btrfs */
3597 || sfs.f_type == 0x52654973 /* reiser3 */ 4606 || sfs.f_type == 0x52654973 /* reiser3 */
3598 || sfs.f_type == 0x01021994 /* tempfs */ 4607 || sfs.f_type == 0x01021994 /* tmpfs */
3599 || sfs.f_type == 0x58465342 /* xfs */)) 4608 || sfs.f_type == 0x58465342 /* xfs */))
3600 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4609 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3601 else 4610 else
3602 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4611 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3603 } 4612 }
… …
3638 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4647 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3639 ev_timer_again (EV_A_ &w->timer); 4648 ev_timer_again (EV_A_ &w->timer);
3640 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4649 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3641} 4650}
3642 4651
3643static void noinline 4652ecb_noinline
4653static void
3644infy_del (EV_P_ ev_stat *w) 4654infy_del (EV_P_ ev_stat *w)
3645{ 4655{
3646 int slot; 4656 int slot;
3647 int wd = w->wd; 4657 int wd = w->wd;
3648 4658
… …
3655 4665
3656 /* remove this watcher, if others are watching it, they will rearm */ 4666 /* remove this watcher, if others are watching it, they will rearm */
3657 inotify_rm_watch (fs_fd, wd); 4667 inotify_rm_watch (fs_fd, wd);
3658} 4668}
3659 4669
3660static void noinline 4670ecb_noinline
4671static void
3661infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4672infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3662{ 4673{
3663 if (slot < 0) 4674 if (slot < 0)
3664 /* overflow, need to check for all hash slots */ 4675 /* overflow, need to check for all hash slots */
3665 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4676 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3701 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4712 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3702 ofs += sizeof (struct inotify_event) + ev->len; 4713 ofs += sizeof (struct inotify_event) + ev->len;
3703 } 4714 }
3704} 4715}
3705 4716
3706inline_size void ecb_cold 4717inline_size ecb_cold
4718void
3707ev_check_2625 (EV_P) 4719ev_check_2625 (EV_P)
3708{ 4720{
3709 /* kernels < 2.6.25 are borked 4721 /* kernels < 2.6.25 are borked
3710 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4722 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3711 */ 4723 */
… …
3716} 4728}
3717 4729
3718inline_size int 4730inline_size int
3719infy_newfd (void) 4731infy_newfd (void)
3720{ 4732{
3721#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4733#if defined IN_CLOEXEC && defined IN_NONBLOCK
3722 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4734 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3723 if (fd >= 0) 4735 if (fd >= 0)
3724 return fd; 4736 return fd;
3725#endif 4737#endif
3726 return inotify_init (); 4738 return inotify_init ();
… …
3801#else 4813#else
3802# define EV_LSTAT(p,b) lstat (p, b) 4814# define EV_LSTAT(p,b) lstat (p, b)
3803#endif 4815#endif
3804 4816
3805void 4817void
3806ev_stat_stat (EV_P_ ev_stat *w) 4818ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3807{ 4819{
3808 if (lstat (w->path, &w->attr) < 0) 4820 if (lstat (w->path, &w->attr) < 0)
3809 w->attr.st_nlink = 0; 4821 w->attr.st_nlink = 0;
3810 else if (!w->attr.st_nlink) 4822 else if (!w->attr.st_nlink)
3811 w->attr.st_nlink = 1; 4823 w->attr.st_nlink = 1;
3812} 4824}
3813 4825
3814static void noinline 4826ecb_noinline
4827static void
3815stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4828stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3816{ 4829{
3817 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4830 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3818 4831
3819 ev_statdata prev = w->attr; 4832 ev_statdata prev = w->attr;
… …
3850 ev_feed_event (EV_A_ w, EV_STAT); 4863 ev_feed_event (EV_A_ w, EV_STAT);
3851 } 4864 }
3852} 4865}
3853 4866
3854void 4867void
3855ev_stat_start (EV_P_ ev_stat *w) 4868ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3856{ 4869{
3857 if (expect_false (ev_is_active (w))) 4870 if (ecb_expect_false (ev_is_active (w)))
3858 return; 4871 return;
3859 4872
3860 ev_stat_stat (EV_A_ w); 4873 ev_stat_stat (EV_A_ w);
3861 4874
3862 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4875 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3881 4894
3882 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3883} 4896}
3884 4897
3885void 4898void
3886ev_stat_stop (EV_P_ ev_stat *w) 4899ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3887{ 4900{
3888 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
3889 if (expect_false (!ev_is_active (w))) 4902 if (ecb_expect_false (!ev_is_active (w)))
3890 return; 4903 return;
3891 4904
3892 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
3893 4906
3894#if EV_USE_INOTIFY 4907#if EV_USE_INOTIFY
… …
3907} 4920}
3908#endif 4921#endif
3909 4922
3910#if EV_IDLE_ENABLE 4923#if EV_IDLE_ENABLE
3911void 4924void
3912ev_idle_start (EV_P_ ev_idle *w) 4925ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3913{ 4926{
3914 if (expect_false (ev_is_active (w))) 4927 if (ecb_expect_false (ev_is_active (w)))
3915 return; 4928 return;
3916 4929
3917 pri_adjust (EV_A_ (W)w); 4930 pri_adjust (EV_A_ (W)w);
3918 4931
3919 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
… …
3922 int active = ++idlecnt [ABSPRI (w)]; 4935 int active = ++idlecnt [ABSPRI (w)];
3923 4936
3924 ++idleall; 4937 ++idleall;
3925 ev_start (EV_A_ (W)w, active); 4938 ev_start (EV_A_ (W)w, active);
3926 4939
3927 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4940 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3928 idles [ABSPRI (w)][active - 1] = w; 4941 idles [ABSPRI (w)][active - 1] = w;
3929 } 4942 }
3930 4943
3931 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
3932} 4945}
3933 4946
3934void 4947void
3935ev_idle_stop (EV_P_ ev_idle *w) 4948ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3936{ 4949{
3937 clear_pending (EV_A_ (W)w); 4950 clear_pending (EV_A_ (W)w);
3938 if (expect_false (!ev_is_active (w))) 4951 if (ecb_expect_false (!ev_is_active (w)))
3939 return; 4952 return;
3940 4953
3941 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
3942 4955
3943 { 4956 {
… …
3954} 4967}
3955#endif 4968#endif
3956 4969
3957#if EV_PREPARE_ENABLE 4970#if EV_PREPARE_ENABLE
3958void 4971void
3959ev_prepare_start (EV_P_ ev_prepare *w) 4972ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3960{ 4973{
3961 if (expect_false (ev_is_active (w))) 4974 if (ecb_expect_false (ev_is_active (w)))
3962 return; 4975 return;
3963 4976
3964 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3965 4978
3966 ev_start (EV_A_ (W)w, ++preparecnt); 4979 ev_start (EV_A_ (W)w, ++preparecnt);
3967 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4980 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3968 prepares [preparecnt - 1] = w; 4981 prepares [preparecnt - 1] = w;
3969 4982
3970 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3971} 4984}
3972 4985
3973void 4986void
3974ev_prepare_stop (EV_P_ ev_prepare *w) 4987ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3975{ 4988{
3976 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3977 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3978 return; 4991 return;
3979 4992
3980 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3981 4994
3982 { 4995 {
… …
3992} 5005}
3993#endif 5006#endif
3994 5007
3995#if EV_CHECK_ENABLE 5008#if EV_CHECK_ENABLE
3996void 5009void
3997ev_check_start (EV_P_ ev_check *w) 5010ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3998{ 5011{
3999 if (expect_false (ev_is_active (w))) 5012 if (ecb_expect_false (ev_is_active (w)))
4000 return; 5013 return;
4001 5014
4002 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
4003 5016
4004 ev_start (EV_A_ (W)w, ++checkcnt); 5017 ev_start (EV_A_ (W)w, ++checkcnt);
4005 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5018 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4006 checks [checkcnt - 1] = w; 5019 checks [checkcnt - 1] = w;
4007 5020
4008 EV_FREQUENT_CHECK; 5021 EV_FREQUENT_CHECK;
4009} 5022}
4010 5023
4011void 5024void
4012ev_check_stop (EV_P_ ev_check *w) 5025ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4013{ 5026{
4014 clear_pending (EV_A_ (W)w); 5027 clear_pending (EV_A_ (W)w);
4015 if (expect_false (!ev_is_active (w))) 5028 if (ecb_expect_false (!ev_is_active (w)))
4016 return; 5029 return;
4017 5030
4018 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
4019 5032
4020 { 5033 {
… …
4029 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
4030} 5043}
4031#endif 5044#endif
4032 5045
4033#if EV_EMBED_ENABLE 5046#if EV_EMBED_ENABLE
4034void noinline 5047ecb_noinline
5048void
4035ev_embed_sweep (EV_P_ ev_embed *w) 5049ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4036{ 5050{
4037 ev_run (w->other, EVRUN_NOWAIT); 5051 ev_run (w->other, EVRUN_NOWAIT);
4038} 5052}
4039 5053
4040static void 5054static void
… …
4062 ev_run (EV_A_ EVRUN_NOWAIT); 5076 ev_run (EV_A_ EVRUN_NOWAIT);
4063 } 5077 }
4064 } 5078 }
4065} 5079}
4066 5080
5081#if EV_FORK_ENABLE
4067static void 5082static void
4068embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5083embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4069{ 5084{
4070 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5085 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4071 5086
… …
4078 ev_run (EV_A_ EVRUN_NOWAIT); 5093 ev_run (EV_A_ EVRUN_NOWAIT);
4079 } 5094 }
4080 5095
4081 ev_embed_start (EV_A_ w); 5096 ev_embed_start (EV_A_ w);
4082} 5097}
5098#endif
4083 5099
4084#if 0 5100#if 0
4085static void 5101static void
4086embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5102embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4087{ 5103{
4088 ev_idle_stop (EV_A_ idle); 5104 ev_idle_stop (EV_A_ idle);
4089} 5105}
4090#endif 5106#endif
4091 5107
4092void 5108void
4093ev_embed_start (EV_P_ ev_embed *w) 5109ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4094{ 5110{
4095 if (expect_false (ev_is_active (w))) 5111 if (ecb_expect_false (ev_is_active (w)))
4096 return; 5112 return;
4097 5113
4098 { 5114 {
4099 EV_P = w->other; 5115 EV_P = w->other;
4100 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5116 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4108 5124
4109 ev_prepare_init (&w->prepare, embed_prepare_cb); 5125 ev_prepare_init (&w->prepare, embed_prepare_cb);
4110 ev_set_priority (&w->prepare, EV_MINPRI); 5126 ev_set_priority (&w->prepare, EV_MINPRI);
4111 ev_prepare_start (EV_A_ &w->prepare); 5127 ev_prepare_start (EV_A_ &w->prepare);
4112 5128
5129#if EV_FORK_ENABLE
4113 ev_fork_init (&w->fork, embed_fork_cb); 5130 ev_fork_init (&w->fork, embed_fork_cb);
4114 ev_fork_start (EV_A_ &w->fork); 5131 ev_fork_start (EV_A_ &w->fork);
5132#endif
4115 5133
4116 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5134 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4117 5135
4118 ev_start (EV_A_ (W)w, 1); 5136 ev_start (EV_A_ (W)w, 1);
4119 5137
4120 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4121} 5139}
4122 5140
4123void 5141void
4124ev_embed_stop (EV_P_ ev_embed *w) 5142ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4125{ 5143{
4126 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4127 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4128 return; 5146 return;
4129 5147
4130 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4131 5149
4132 ev_io_stop (EV_A_ &w->io); 5150 ev_io_stop (EV_A_ &w->io);
4133 ev_prepare_stop (EV_A_ &w->prepare); 5151 ev_prepare_stop (EV_A_ &w->prepare);
5152#if EV_FORK_ENABLE
4134 ev_fork_stop (EV_A_ &w->fork); 5153 ev_fork_stop (EV_A_ &w->fork);
5154#endif
4135 5155
4136 ev_stop (EV_A_ (W)w); 5156 ev_stop (EV_A_ (W)w);
4137 5157
4138 EV_FREQUENT_CHECK; 5158 EV_FREQUENT_CHECK;
4139} 5159}
4140#endif 5160#endif
4141 5161
4142#if EV_FORK_ENABLE 5162#if EV_FORK_ENABLE
4143void 5163void
4144ev_fork_start (EV_P_ ev_fork *w) 5164ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4145{ 5165{
4146 if (expect_false (ev_is_active (w))) 5166 if (ecb_expect_false (ev_is_active (w)))
4147 return; 5167 return;
4148 5168
4149 EV_FREQUENT_CHECK; 5169 EV_FREQUENT_CHECK;
4150 5170
4151 ev_start (EV_A_ (W)w, ++forkcnt); 5171 ev_start (EV_A_ (W)w, ++forkcnt);
4152 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5172 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4153 forks [forkcnt - 1] = w; 5173 forks [forkcnt - 1] = w;
4154 5174
4155 EV_FREQUENT_CHECK; 5175 EV_FREQUENT_CHECK;
4156} 5176}
4157 5177
4158void 5178void
4159ev_fork_stop (EV_P_ ev_fork *w) 5179ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4160{ 5180{
4161 clear_pending (EV_A_ (W)w); 5181 clear_pending (EV_A_ (W)w);
4162 if (expect_false (!ev_is_active (w))) 5182 if (ecb_expect_false (!ev_is_active (w)))
4163 return; 5183 return;
4164 5184
4165 EV_FREQUENT_CHECK; 5185 EV_FREQUENT_CHECK;
4166 5186
4167 { 5187 {
… …
4177} 5197}
4178#endif 5198#endif
4179 5199
4180#if EV_CLEANUP_ENABLE 5200#if EV_CLEANUP_ENABLE
4181void 5201void
4182ev_cleanup_start (EV_P_ ev_cleanup *w) 5202ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4183{ 5203{
4184 if (expect_false (ev_is_active (w))) 5204 if (ecb_expect_false (ev_is_active (w)))
4185 return; 5205 return;
4186 5206
4187 EV_FREQUENT_CHECK; 5207 EV_FREQUENT_CHECK;
4188 5208
4189 ev_start (EV_A_ (W)w, ++cleanupcnt); 5209 ev_start (EV_A_ (W)w, ++cleanupcnt);
4190 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5210 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4191 cleanups [cleanupcnt - 1] = w; 5211 cleanups [cleanupcnt - 1] = w;
4192 5212
4193 /* cleanup watchers should never keep a refcount on the loop */ 5213 /* cleanup watchers should never keep a refcount on the loop */
4194 ev_unref (EV_A); 5214 ev_unref (EV_A);
4195 EV_FREQUENT_CHECK; 5215 EV_FREQUENT_CHECK;
4196} 5216}
4197 5217
4198void 5218void
4199ev_cleanup_stop (EV_P_ ev_cleanup *w) 5219ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4200{ 5220{
4201 clear_pending (EV_A_ (W)w); 5221 clear_pending (EV_A_ (W)w);
4202 if (expect_false (!ev_is_active (w))) 5222 if (ecb_expect_false (!ev_is_active (w)))
4203 return; 5223 return;
4204 5224
4205 EV_FREQUENT_CHECK; 5225 EV_FREQUENT_CHECK;
4206 ev_ref (EV_A); 5226 ev_ref (EV_A);
4207 5227
… …
4218} 5238}
4219#endif 5239#endif
4220 5240
4221#if EV_ASYNC_ENABLE 5241#if EV_ASYNC_ENABLE
4222void 5242void
4223ev_async_start (EV_P_ ev_async *w) 5243ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4224{ 5244{
4225 if (expect_false (ev_is_active (w))) 5245 if (ecb_expect_false (ev_is_active (w)))
4226 return; 5246 return;
4227 5247
4228 w->sent = 0; 5248 w->sent = 0;
4229 5249
4230 evpipe_init (EV_A); 5250 evpipe_init (EV_A);
4231 5251
4232 EV_FREQUENT_CHECK; 5252 EV_FREQUENT_CHECK;
4233 5253
4234 ev_start (EV_A_ (W)w, ++asynccnt); 5254 ev_start (EV_A_ (W)w, ++asynccnt);
4235 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5255 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4236 asyncs [asynccnt - 1] = w; 5256 asyncs [asynccnt - 1] = w;
4237 5257
4238 EV_FREQUENT_CHECK; 5258 EV_FREQUENT_CHECK;
4239} 5259}
4240 5260
4241void 5261void
4242ev_async_stop (EV_P_ ev_async *w) 5262ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4243{ 5263{
4244 clear_pending (EV_A_ (W)w); 5264 clear_pending (EV_A_ (W)w);
4245 if (expect_false (!ev_is_active (w))) 5265 if (ecb_expect_false (!ev_is_active (w)))
4246 return; 5266 return;
4247 5267
4248 EV_FREQUENT_CHECK; 5268 EV_FREQUENT_CHECK;
4249 5269
4250 { 5270 {
… …
4258 5278
4259 EV_FREQUENT_CHECK; 5279 EV_FREQUENT_CHECK;
4260} 5280}
4261 5281
4262void 5282void
4263ev_async_send (EV_P_ ev_async *w) 5283ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4264{ 5284{
4265 w->sent = 1; 5285 w->sent = 1;
4266 evpipe_write (EV_A_ &async_pending); 5286 evpipe_write (EV_A_ &async_pending);
4267} 5287}
4268#endif 5288#endif
… …
4305 5325
4306 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5326 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4307} 5327}
4308 5328
4309void 5329void
4310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5330ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4311{ 5331{
4312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4313
4314 if (expect_false (!once))
4315 {
4316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4317 return;
4318 }
4319 5333
4320 once->cb = cb; 5334 once->cb = cb;
4321 once->arg = arg; 5335 once->arg = arg;
4322 5336
4323 ev_init (&once->io, once_cb_io); 5337 ev_init (&once->io, once_cb_io);
… …
4336} 5350}
4337 5351
4338/*****************************************************************************/ 5352/*****************************************************************************/
4339 5353
4340#if EV_WALK_ENABLE 5354#if EV_WALK_ENABLE
4341void ecb_cold 5355ecb_cold
5356void
4342ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5357ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4343{ 5358{
4344 int i, j; 5359 int i, j;
4345 ev_watcher_list *wl, *wn; 5360 ev_watcher_list *wl, *wn;
4346 5361
4347 if (types & (EV_IO | EV_EMBED)) 5362 if (types & (EV_IO | EV_EMBED))

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