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Comparing libev/ev.c (file contents):
Revision 1.415 by root, Fri Mar 30 17:43:55 2012 UTC vs.
Revision 1.520 by root, Sat Dec 28 07:44:15 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
201# include <sys/wait.h> 238# include <sys/wait.h>
202# include <unistd.h> 239# include <unistd.h>
203#else 240#else
204# include <io.h> 241# include <io.h>
205# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
206# include <windows.h> 244# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
209# endif 247# endif
210# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
211#endif 249#endif
212 250
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220
221/* 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 */
222 252
223/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
224#if defined (EV_NSIG) 254#if defined EV_NSIG
225/* use what's provided */ 255/* use what's provided */
226#elif defined (NSIG) 256#elif defined NSIG
227# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
228#elif defined(_NSIG) 258#elif defined _NSIG
229# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX) 260#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX) 262#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG) 266#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG) 268#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
240#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined (_sys_nsig) 272#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 274#else
245# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 276#endif
250 277
251#ifndef EV_USE_FLOOR 278#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 279# define EV_USE_FLOOR 0
253#endif 280#endif
254 281
255#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 285# else
259# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
260# endif 287# endif
261#endif 288#endif
262 289
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
263#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
265# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else 302# else
267# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
268# endif 304# endif
269#endif 305#endif
… …
306 342
307#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
308# define EV_USE_PORT 0 344# define EV_USE_PORT 0
309#endif 345#endif
310 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
311#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
313# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
314# else 366# else
315# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
338# else 390# else
339# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
340# endif 392# endif
341#endif 393#endif
342 394
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
343#if 0 /* debugging */ 403#if 0 /* debugging */
344# define EV_VERIFY 3 404# define EV_VERIFY 3
345# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
346# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
347#endif 407#endif
… …
356 416
357#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 419#endif
360 420
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
361/* 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, */
362/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 440# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
369# else 446# else
370# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
372# endif 449# endif
373#endif 450#endif
374 451
375/* 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 */
376 453
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
386#endif 457#endif
387 458
… …
393#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
394# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
396#endif 467#endif
397 468
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
398#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
399/* 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 */
400# if !defined(_WIN32) && !defined(__hpux) 479# if !defined _WIN32 && !defined __hpux
401# 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
402# endif 506# endif
403#endif 507#endif
404 508
405#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
406# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
410# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
412# endif 516# endif
413#endif 517#endif
414 518
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif
418
419#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
420/* 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 */
421# include <stdint.h> 521# include <stdint.h>
422# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
423# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
424# endif 524# endif
425# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
431# endif 531# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif 533#endif
434 534
435#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
436/* 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 */
437# include <stdint.h> 537# include <stdint.h>
438# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
440# endif 540# endif
441# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
443# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
444# else 544# else
445# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
446# endif 546# endif
447# endif 547# endif
448EV_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);
449 549
450struct signalfd_siginfo 550struct signalfd_siginfo
451{ 551{
452 uint32_t ssi_signo; 552 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
454}; 554};
455#endif 555#endif
456 556
457/**/ 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/*****************************************************************************/
458 568
459#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
460# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
461#else 571#else
462# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
467 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
468 */ 578 */
469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 581
472#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) */
473#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) */
474 584
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
475#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)
476#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
477 602
478/* 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 */
479/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
480/* 605/*
481 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
482 * 607 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 609 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 610 * All rights reserved.
486 * 611 *
487 * 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-
488 * tion, are permitted provided that the following conditions are met: 613 * tion, are permitted provided that the following conditions are met:
… …
502 * 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;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * 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
506 * 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.
507 */ 643 */
508 644
509#ifndef ECB_H 645#ifndef ECB_H
510#define ECB_H 646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
511 650
512#ifdef _WIN32 651#ifdef _WIN32
513 typedef signed char int8_t; 652 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 660 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 661 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 662 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 663 typedef unsigned __int64 uint64_t;
525 #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
526#else 674#else
527 #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
528#endif 693#endif
529 694
530/* many compilers define _GNUC_ to some versions but then only implement 695/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 696 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 697 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 698 * or so.
534 * 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
535 * 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.
536 */ 701 */
537#ifndef ECB_GCC_VERSION
538 #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__
539 #define ECB_GCC_VERSION(major,minor) 0 703 #define ECB_GCC_VERSION(major,minor) 0
540 #else 704#else
541 #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)))
542 #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
543#endif 747#endif
544 748
545/*****************************************************************************/ 749/*****************************************************************************/
546 750
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* 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 */
549 753
550#if ECB_NO_THREADS 754#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 755 #define ECB_NO_SMP 1
552#endif 756#endif
553 757
554#if ECB_NO_THREADS || ECB_NO_SMP 758#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
556#endif 760#endif
557 761
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
558#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
560 #if __i386 || __i386__ 774 #if __i386 || __i386__
561 #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")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 778 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #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")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #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 */
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
572 #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")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__) 804 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined(__mips__) 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__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
584 #endif 823 #endif
585 #endif 824 #endif
586#endif 825#endif
587 826
588#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
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
592 /*#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()
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #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 */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32) 855 #elif defined _WIN32
599 #include <WinNT.h> 856 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h> 859 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
605 #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 ()
606 #elif __xlC__ 864 #elif __xlC__
607 #define ECB_MEMORY_FENCE __sync () 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)
608 #endif 877 #endif
609#endif 878#endif
610 879
611#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
624 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
625 #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)
626 #endif 895 #endif
627#endif 896#endif
628 897
629#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
630 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
631#endif 900#endif
632 901
633#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif 904#endif
636 905
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
637/*****************************************************************************/ 910/*****************************************************************************/
638 911
639#define ECB_C99 (__STDC_VERSION__ >= 199901L) 912#if ECB_CPP
640
641#if __cplusplus
642 #define ecb_inline static inline 913 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
645#elif ECB_C99 916#elif ECB_C99
646 #define ecb_inline static inline 917 #define ecb_inline static inline
… …
660 931
661#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
664#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))
665 937
666#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
667 939
668#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
669 #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)
670 #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)
671 #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)
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else 964#else
674 #define ecb_attribute(attrlist)
675 #define ecb_is_constant(expr) 0
676 #define ecb_expect(expr,value) (expr)
677 #define ecb_prefetch(addr,rw,locality) 965 #define ecb_prefetch(addr,rw,locality)
678#endif 966#endif
679 967
680/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
681#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; };
682 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
683#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
684 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
685#endif 975#endif
686 976
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
687#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__)) 995#endif
996
689#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
691#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
692 1012
693#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__)) 1014 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__)) 1015 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__)) 1016 #define ecb_cold ecb_attribute ((__cold__))
… …
708/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
711 1031
712/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
713#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))
714 /* 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 */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */ 1043 /* no popcountll */
721#else 1044#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
723 ecb_function_ int 1046 ecb_function_ ecb_const int
724 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
725 { 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
726 int r = 0; 1054 int r = 0;
727 1055
728 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
729 1057
730#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
740 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
742#endif 1070#endif
743 1071
744 return r; 1072 return r;
1073#endif
745 } 1074 }
746 1075
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
748 ecb_function_ int 1077 ecb_function_ ecb_const int
749 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
750 { 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
751 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
753 } 1088 }
754 1089
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
756 ecb_function_ int 1091 ecb_function_ ecb_const int
757 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
758 { 1093 {
759 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101; 1097 x *= 0x01010101;
763 1098
764 return x >> 24; 1099 return x >> 24;
765 } 1100 }
766 1101
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
768 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
769 { 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
770 int r = 0; 1110 int r = 0;
771 1111
772 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
777 1117
778 return r; 1118 return r;
1119#endif
779 } 1120 }
780 1121
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
782 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
783 { 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
784 int r = 0; 1130 int r = 0;
785 1131
786 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
787 1133
788 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
789 } 1136 }
790#endif 1137#endif
791 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
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
794{ 1146{
795 return ( (x * 0x0802U & 0x22110U) 1147 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797} 1149}
798 1150
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
801{ 1153{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8); 1157 x = ( x >> 8 ) | ( x << 8);
806 1158
807 return x; 1159 return x;
808} 1160}
809 1161
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
812{ 1164{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
819 return x; 1171 return x;
820} 1172}
821 1173
822/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */ 1175/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
825ecb_function_ int 1177ecb_function_ ecb_const int
826ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
827{ 1179{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829} 1181}
830 1182
831ecb_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);
832ecb_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);
833ecb_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);
834ecb_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);
835ecb_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);
836ecb_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);
837ecb_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);
838ecb_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);
839 1191
840ecb_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); }
841ecb_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); }
842ecb_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); }
843ecb_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); }
844ecb_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); }
845ecb_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); }
846ecb_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); }
847ecb_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); }
848 1200
849#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
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
851 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #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)))
853#else 1214#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
855 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
856 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
857 { 1218 {
858 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
859 } 1220 }
860 1221
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
862 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
863 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
864 { 1225 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 } 1227 }
867 1228
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
869 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
870 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
871 { 1232 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 } 1234 }
874#endif 1235#endif
875 1236
876#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
877 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
878#else 1239#else
879 /* 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 :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
881 ecb_inline void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
882#endif 1243#endif
883 1244
884/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
886 1247
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
888ecb_inline unsigned char 1249ecb_inline ecb_const uint32_t
889ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
890{ 1251{
891 const uint32_t u = 0x11223344; 1252 /* the union code still generates code under pressure in gcc, */
892 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
893} 1274}
894 1275
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
896ecb_inline 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; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
898ecb_inline 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; }
899 1280
900#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #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))
902#else 1283#else
903 #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)))
904#endif 1285#endif
905 1286
906#if __cplusplus 1287#if ECB_CPP
907 template<typename T> 1288 template<typename T>
908 static inline T ecb_div_rd (T val, T div) 1289 static inline T ecb_div_rd (T val, T div)
909 { 1290 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 } 1292 }
… …
928 } 1309 }
929#else 1310#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif 1312#endif
932 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
933#endif 1619#endif
934 1620
935/* ECB.H END */ 1621/* ECB.H END */
936 1622
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* 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
939 * 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
940 * 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
941 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
944 */ 1630 */
945# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
949# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif 1638#endif
953 1639
954#define expect_false(cond) ecb_expect_false (cond)
955#define expect_true(cond) ecb_expect_true (cond)
956#define noinline ecb_noinline
957
958#define inline_size ecb_inline 1640#define inline_size ecb_inline
959 1641
960#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
961# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
962#else 1644#else
963# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
964#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
965 1713
966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
967 1715
968#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
969# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
970#else 1718#else
971# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
972#endif 1720#endif
973 1721
974#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
975#define EMPTY2(a,b) /* used to suppress some warnings */
976 1723
977typedef ev_watcher *W; 1724typedef ev_watcher *W;
978typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
979typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
980 1727
… …
1005# include "ev_win32.c" 1752# include "ev_win32.c"
1006#endif 1753#endif
1007 1754
1008/*****************************************************************************/ 1755/*****************************************************************************/
1009 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1010/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1011 1762
1012#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1013# include <math.h> 1764# include <math.h>
1014# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1015#else 1766#else
1016 1767
1017#include <float.h> 1768#include <float.h>
1018 1769
1019/* 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
1020static ev_tstamp noinline 1772static ev_tstamp
1021ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1022{ 1774{
1023 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else 1778#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif 1780#endif
1029 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
1030 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1031 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1032 { 1792 {
1033 ev_tstamp f; 1793 ev_tstamp f;
1034 1794
1035 if (v == v - 1.) 1795 if (v == v - 1.)
1036 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1037 1797
1038 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1040 } 1800 }
1041 1801
1042 /* special treatment for negative args? */
1043 if (expect_false (v < 0.))
1044 {
1045 ev_tstamp f = -ev_floor (-v);
1046
1047 return f - (f == v ? 0 : 1);
1048 }
1049
1050 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
1051 return (unsigned long)v; 1803 return (unsigned long)v;
1052} 1804}
1053 1805
1054#endif 1806#endif
… …
1057 1809
1058#ifdef __linux 1810#ifdef __linux
1059# include <sys/utsname.h> 1811# include <sys/utsname.h>
1060#endif 1812#endif
1061 1813
1062static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1063ev_linux_version (void) 1816ev_linux_version (void)
1064{ 1817{
1065#ifdef __linux 1818#ifdef __linux
1066 unsigned int v = 0; 1819 unsigned int v = 0;
1067 struct utsname buf; 1820 struct utsname buf;
… …
1096} 1849}
1097 1850
1098/*****************************************************************************/ 1851/*****************************************************************************/
1099 1852
1100#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1101static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1102ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1103{ 1857{
1104 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1105} 1859}
1106#endif 1860#endif
1107 1861
1108static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1109 1863
1110void ecb_cold 1864ecb_cold
1865void
1111ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1112{ 1867{
1113 syserr_cb = cb; 1868 syserr_cb = cb;
1114} 1869}
1115 1870
1116static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1117ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1118{ 1874{
1119 if (!msg) 1875 if (!msg)
1120 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1121 1877
… …
1134 abort (); 1890 abort ();
1135 } 1891 }
1136} 1892}
1137 1893
1138static void * 1894static void *
1139ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1140{ 1896{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
1144 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1145 * 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
1146 * 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.
1147 */ 1902 */
1148 1903
1149 if (size) 1904 if (size)
1150 return realloc (ptr, size); 1905 return realloc (ptr, size);
1151 1906
1152 free (ptr); 1907 free (ptr);
1153 return 0; 1908 return 0;
1154#endif
1155} 1909}
1156 1910
1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1158 1912
1159void ecb_cold 1913ecb_cold
1914void
1160ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1161{ 1916{
1162 alloc = cb; 1917 alloc = cb;
1163} 1918}
1164 1919
1165inline_speed void * 1920inline_speed void *
… …
1192typedef struct 1947typedef struct
1193{ 1948{
1194 WL head; 1949 WL head;
1195 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1196 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) */
1197 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 */
1198 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1199#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1200 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1201#endif 1956#endif
1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1203 SOCKET handle; 1958 SOCKET handle;
… …
1257 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1258 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 */
1259 2014
1260#else 2015#else
1261 2016
1262 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 */
1263 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1264 #include "ev_vars.h" 2019 #include "ev_vars.h"
1265 #undef VAR 2020 #undef VAR
1266 2021
1267 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1268 2023
1269#endif 2024#endif
1270 2025
1271#if EV_FEATURE_API 2026#if EV_FEATURE_API
1272# 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)
1273# 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)
1274# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1275#else 2030#else
1276# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1277# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1282 2037
1283/*****************************************************************************/ 2038/*****************************************************************************/
1284 2039
1285#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1286ev_tstamp 2041ev_tstamp
1287ev_time (void) 2042ev_time (void) EV_NOEXCEPT
1288{ 2043{
1289#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1290 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1291 { 2046 {
1292 struct timespec ts; 2047 struct timespec ts;
1293 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1294 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1295 } 2050 }
1296#endif 2051#endif
1297 2052
2053 {
1298 struct timeval tv; 2054 struct timeval tv;
1299 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1300 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1301} 2058}
1302#endif 2059#endif
1303 2060
1304inline_size ev_tstamp 2061inline_size ev_tstamp
1305get_clock (void) 2062get_clock (void)
1306{ 2063{
1307#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1308 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1309 { 2066 {
1310 struct timespec ts; 2067 struct timespec ts;
1311 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1312 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1313 } 2070 }
1314#endif 2071#endif
1315 2072
1316 return ev_time (); 2073 return ev_time ();
1317} 2074}
1318 2075
1319#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1320ev_tstamp 2077ev_tstamp
1321ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
1322{ 2079{
1323 return ev_rt_now; 2080 return ev_rt_now;
1324} 2081}
1325#endif 2082#endif
1326 2083
1327void 2084void
1328ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1329{ 2086{
1330 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1331 { 2088 {
1332#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1333 struct timespec ts; 2090 struct timespec ts;
1334 2091
1335 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1336 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1337#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) */
1338 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1339#else 2098#else
1340 struct timeval tv; 2099 struct timeval tv;
1341 2100
1342 /* 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 */
1343 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1373 } 2132 }
1374 2133
1375 return ncur; 2134 return ncur;
1376} 2135}
1377 2136
1378static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1379array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1380{ 2140{
1381 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1382 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1383} 2143}
1384 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1385#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1386 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1387 2149
1388#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1389 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1390 { \ 2152 { \
1391 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1392 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1393 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1394 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1395 } 2157 }
1396 2158
1397#if 0 2159#if 0
1398#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1399 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1408 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
1409 2171
1410/*****************************************************************************/ 2172/*****************************************************************************/
1411 2173
1412/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1413static void noinline 2175ecb_noinline
2176static void
1414pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1415{ 2178{
1416} 2179}
1417 2180
1418void noinline 2181ecb_noinline
2182void
1419ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1420{ 2184{
1421 W w_ = (W)w; 2185 W w_ = (W)w;
1422 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1423 2187
1424 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1425 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1426 else 2190 else
1427 { 2191 {
1428 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1429 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1430 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1431 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1432 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
1433} 2199}
1434 2200
1435inline_speed void 2201inline_speed void
1436feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1437{ 2203{
1438 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1439 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1440} 2206}
1441 2207
1442inline_size void 2208inline_size void
1443feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1478inline_speed void 2244inline_speed void
1479fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1480{ 2246{
1481 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1482 2248
1483 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1484 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1485} 2251}
1486 2252
1487void 2253void
1488ev_feed_fd_event (EV_P_ int fd, int revents) 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1489{ 2255{
1490 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1491 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1492} 2258}
1493 2259
… …
1496inline_size void 2262inline_size void
1497fd_reify (EV_P) 2263fd_reify (EV_P)
1498{ 2264{
1499 int i; 2265 int i;
1500 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
1501#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1502 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
1503 { 2281 {
1504 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
1505 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
1506 2284
1507 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1521 } 2299 }
1522 } 2300 }
1523 } 2301 }
1524#endif 2302#endif
1525 2303
1526 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
1527 { 2305 {
1528 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
1529 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
1530 ev_io *w; 2308 ev_io *w;
1531 2309
1532 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
1534 2312
1535 anfd->reify = 0; 2313 anfd->reify = 0;
1536 2314
1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1538 { 2316 {
1539 anfd->events = 0; 2317 anfd->events = 0;
1540 2318
1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1542 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
1547 2325
1548 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
1549 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
1550 } 2328 }
1551 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
1552 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
1553} 2338}
1554 2339
1555/* something about the given fd changed */ 2340/* something about the given fd changed */
1556inline_size void 2341inline_size
2342void
1557fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
1558{ 2344{
1559 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
1560 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
1561 2347
1562 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
1563 { 2349 {
1564 ++fdchangecnt; 2350 ++fdchangecnt;
1565 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1566 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
1567 } 2353 }
1568} 2354}
1569 2355
1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1571inline_speed void ecb_cold 2357inline_speed ecb_cold void
1572fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
1573{ 2359{
1574 ev_io *w; 2360 ev_io *w;
1575 2361
1576 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1580 } 2366 }
1581} 2367}
1582 2368
1583/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
1584inline_size int ecb_cold 2370inline_size ecb_cold int
1585fd_valid (int fd) 2371fd_valid (int fd)
1586{ 2372{
1587#ifdef _WIN32 2373#ifdef _WIN32
1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1589#else 2375#else
1590 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
1591#endif 2377#endif
1592} 2378}
1593 2379
1594/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
1595static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
1596fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
1597{ 2384{
1598 int fd; 2385 int fd;
1599 2386
1600 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
1602 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
1603 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
1604} 2391}
1605 2392
1606/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
1607static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
1608fd_enomem (EV_P) 2396fd_enomem (EV_P)
1609{ 2397{
1610 int fd; 2398 int fd;
1611 2399
1612 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1616 break; 2404 break;
1617 } 2405 }
1618} 2406}
1619 2407
1620/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
1621static void noinline 2409ecb_noinline
2410static void
1622fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1623{ 2412{
1624 int fd; 2413 int fd;
1625 2414
1626 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
1679 ev_tstamp minat; 2468 ev_tstamp minat;
1680 ANHE *minpos; 2469 ANHE *minpos;
1681 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1682 2471
1683 /* find minimum child */ 2472 /* find minimum child */
1684 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
1685 { 2474 {
1686 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1687 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1688 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2477 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1689 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1690 } 2479 }
1691 else if (pos < E) 2480 else if (pos < E)
1692 { 2481 {
1693 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1694 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1695 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1696 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1697 } 2486 }
1698 else 2487 else
1699 break; 2488 break;
1700 2489
1701 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
1709 2498
1710 heap [k] = he; 2499 heap [k] = he;
1711 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
1712} 2501}
1713 2502
1714#else /* 4HEAP */ 2503#else /* not 4HEAP */
1715 2504
1716#define HEAP0 1 2505#define HEAP0 1
1717#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
1718#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
1719 2508
… …
1807 2596
1808/*****************************************************************************/ 2597/*****************************************************************************/
1809 2598
1810#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1811 2600
1812static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
1813evpipe_init (EV_P) 2603evpipe_init (EV_P)
1814{ 2604{
1815 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
1816 { 2606 {
2607 int fds [2];
2608
1817# if EV_USE_EVENTFD 2609# if EV_USE_EVENTFD
2610 fds [0] = -1;
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2611 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL) 2612 if (fds [1] < 0 && errno == EINVAL)
1820 evfd = eventfd (0, 0); 2613 fds [1] = eventfd (0, 0);
1821 2614
1822 if (evfd >= 0) 2615 if (fds [1] < 0)
2616# endif
1823 { 2617 {
2618 while (pipe (fds))
2619 ev_syserr ("(libev) error creating signal/async pipe");
2620
2621 fd_intern (fds [0]);
2622 }
2623
1824 evpipe [0] = -1; 2624 evpipe [0] = fds [0];
1825 fd_intern (evfd); /* doing it twice doesn't hurt */ 2625
1826 ev_io_set (&pipe_w, evfd, EV_READ); 2626 if (evpipe [1] < 0)
2627 evpipe [1] = fds [1]; /* first call, set write fd */
2628 else
2629 {
2630 /* on subsequent calls, do not change evpipe [1] */
2631 /* so that evpipe_write can always rely on its value. */
2632 /* this branch does not do anything sensible on windows, */
2633 /* so must not be executed on windows */
2634
2635 dup2 (fds [1], evpipe [1]);
2636 close (fds [1]);
2637 }
2638
2639 fd_intern (evpipe [1]);
2640
2641 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2642 ev_io_start (EV_A_ &pipe_w);
2643 ev_unref (EV_A); /* watcher should not keep loop alive */
2644 }
2645}
2646
2647inline_speed void
2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2649{
2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2651
2652 if (ecb_expect_true (*flag))
2653 return;
2654
2655 *flag = 1;
2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2657
2658 pipe_write_skipped = 1;
2659
2660 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2661
2662 if (pipe_write_wanted)
2663 {
2664 int old_errno;
2665
2666 pipe_write_skipped = 0;
2667 ECB_MEMORY_FENCE_RELEASE;
2668
2669 old_errno = errno; /* save errno because write will clobber it */
2670
2671#if EV_USE_EVENTFD
2672 if (evpipe [0] < 0)
2673 {
2674 uint64_t counter = 1;
2675 write (evpipe [1], &counter, sizeof (uint64_t));
1827 } 2676 }
1828 else 2677 else
1829# endif 2678#endif
1830 { 2679 {
1831 while (pipe (evpipe)) 2680#ifdef _WIN32
1832 ev_syserr ("(libev) error creating signal/async pipe"); 2681 WSABUF buf;
1833 2682 DWORD sent;
1834 fd_intern (evpipe [0]); 2683 buf.buf = (char *)&buf;
1835 fd_intern (evpipe [1]); 2684 buf.len = 1;
1836 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1837 } 2686#else
1838
1839 ev_io_start (EV_A_ &pipe_w);
1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1841 }
1842}
1843
1844inline_speed void
1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1846{
1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1864 old_errno = errno; /* save errno because write will clobber it */
1865
1866#if EV_USE_EVENTFD
1867 if (evfd >= 0)
1868 {
1869 uint64_t counter = 1;
1870 write (evfd, &counter, sizeof (uint64_t));
1871 }
1872 else
1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
1882 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2688#endif
1883 } 2689 }
1884 2690
1885 errno = old_errno; 2691 errno = old_errno;
1886 } 2692 }
1887} 2693}
… …
1894 int i; 2700 int i;
1895 2701
1896 if (revents & EV_READ) 2702 if (revents & EV_READ)
1897 { 2703 {
1898#if EV_USE_EVENTFD 2704#if EV_USE_EVENTFD
1899 if (evfd >= 0) 2705 if (evpipe [0] < 0)
1900 { 2706 {
1901 uint64_t counter; 2707 uint64_t counter;
1902 read (evfd, &counter, sizeof (uint64_t)); 2708 read (evpipe [1], &counter, sizeof (uint64_t));
1903 } 2709 }
1904 else 2710 else
1905#endif 2711#endif
1906 { 2712 {
1907 char dummy; 2713 char dummy[4];
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2714#ifdef _WIN32
2715 WSABUF buf;
2716 DWORD recvd;
2717 DWORD flags = 0;
2718 buf.buf = dummy;
2719 buf.len = sizeof (dummy);
2720 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2721#else
1909 read (evpipe [0], &dummy, 1); 2722 read (evpipe [0], &dummy, sizeof (dummy));
2723#endif
1910 } 2724 }
1911 } 2725 }
1912 2726
1913 pipe_write_skipped = 0; 2727 pipe_write_skipped = 0;
2728
2729 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1914 2730
1915#if EV_SIGNAL_ENABLE 2731#if EV_SIGNAL_ENABLE
1916 if (sig_pending) 2732 if (sig_pending)
1917 { 2733 {
1918 sig_pending = 0; 2734 sig_pending = 0;
1919 2735
2736 ECB_MEMORY_FENCE;
2737
1920 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
1921 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
1922 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
1923 } 2741 }
1924#endif 2742#endif
1925 2743
1926#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1927 if (async_pending) 2745 if (async_pending)
1928 { 2746 {
1929 async_pending = 0; 2747 async_pending = 0;
2748
2749 ECB_MEMORY_FENCE;
1930 2750
1931 for (i = asynccnt; i--; ) 2751 for (i = asynccnt; i--; )
1932 if (asyncs [i]->sent) 2752 if (asyncs [i]->sent)
1933 { 2753 {
1934 asyncs [i]->sent = 0; 2754 asyncs [i]->sent = 0;
2755 ECB_MEMORY_FENCE_RELEASE;
1935 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2756 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1936 } 2757 }
1937 } 2758 }
1938#endif 2759#endif
1939} 2760}
1940 2761
1941/*****************************************************************************/ 2762/*****************************************************************************/
1942 2763
1943void 2764void
1944ev_feed_signal (int signum) 2765ev_feed_signal (int signum) EV_NOEXCEPT
1945{ 2766{
1946#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2768 EV_P;
2769 ECB_MEMORY_FENCE_ACQUIRE;
1947 EV_P = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
1948 2771
1949 if (!EV_A) 2772 if (!EV_A)
1950 return; 2773 return;
1951#endif 2774#endif
1952 2775
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1; 2776 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending); 2777 evpipe_write (EV_A_ &sig_pending);
1958} 2778}
1959 2779
1960static void 2780static void
… …
1965#endif 2785#endif
1966 2786
1967 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
1968} 2788}
1969 2789
1970void noinline 2790ecb_noinline
2791void
1971ev_feed_signal_event (EV_P_ int signum) 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1972{ 2793{
1973 WL w; 2794 WL w;
1974 2795
1975 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1976 return; 2797 return;
1977 2798
1978 --signum; 2799 --signum;
1979 2800
1980#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
1981 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* it is permissible to try to feed a signal to the wrong loop */
1982 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
1983 2804
1984 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
1985 return; 2806 return;
1986#endif 2807#endif
1987 2808
1988 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2810 ECB_MEMORY_FENCE_RELEASE;
1989 2811
1990 for (w = signals [signum].head; w; w = w->next) 2812 for (w = signals [signum].head; w; w = w->next)
1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1992} 2814}
1993 2815
… …
2072 2894
2073#endif 2895#endif
2074 2896
2075/*****************************************************************************/ 2897/*****************************************************************************/
2076 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2077#if EV_USE_IOCP 2951#if EV_USE_IOCP
2078# include "ev_iocp.c" 2952# include "ev_iocp.c"
2079#endif 2953#endif
2080#if EV_USE_PORT 2954#if EV_USE_PORT
2081# include "ev_port.c" 2955# include "ev_port.c"
… …
2084# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2085#endif 2959#endif
2086#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2087# include "ev_epoll.c" 2961# include "ev_epoll.c"
2088#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
2089#if EV_USE_POLL 2969#if EV_USE_POLL
2090# include "ev_poll.c" 2970# include "ev_poll.c"
2091#endif 2971#endif
2092#if EV_USE_SELECT 2972#if EV_USE_SELECT
2093# include "ev_select.c" 2973# include "ev_select.c"
2094#endif 2974#endif
2095 2975
2096int ecb_cold 2976ecb_cold int
2097ev_version_major (void) 2977ev_version_major (void) EV_NOEXCEPT
2098{ 2978{
2099 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
2100} 2980}
2101 2981
2102int ecb_cold 2982ecb_cold int
2103ev_version_minor (void) 2983ev_version_minor (void) EV_NOEXCEPT
2104{ 2984{
2105 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2106} 2986}
2107 2987
2108/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
2109int inline_size ecb_cold 2989inline_size ecb_cold int
2110enable_secure (void) 2990enable_secure (void)
2111{ 2991{
2112#ifdef _WIN32 2992#ifdef _WIN32
2113 return 0; 2993 return 0;
2114#else 2994#else
2115 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2116 || getgid () != getegid (); 2996 || getgid () != getegid ();
2117#endif 2997#endif
2118} 2998}
2119 2999
2120unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2121ev_supported_backends (void) 3002ev_supported_backends (void) EV_NOEXCEPT
2122{ 3003{
2123 unsigned int flags = 0; 3004 unsigned int flags = 0;
2124 3005
2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2126 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2127 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2128 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2130 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2131 return flags; 3014 return flags;
2132} 3015}
2133 3016
2134unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2135ev_recommended_backends (void) 3019ev_recommended_backends (void) EV_NOEXCEPT
2136{ 3020{
2137 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2138 3022
2139#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2140 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2148#endif 3032#endif
2149#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2150 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2151#endif 3035#endif
2152 3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
3045
2153 return flags; 3046 return flags;
2154} 3047}
2155 3048
2156unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2157ev_embeddable_backends (void) 3051ev_embeddable_backends (void) EV_NOEXCEPT
2158{ 3052{
2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2160 3054
2161 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2163 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2164 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
3061 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3062 * because our backend_fd is the epoll fd we need as fallback.
3063 * if the kernel ever is fixed, this might change...
3064 */
3065
2165 return flags; 3066 return flags;
2166} 3067}
2167 3068
2168unsigned int 3069unsigned int
2169ev_backend (EV_P) 3070ev_backend (EV_P) EV_NOEXCEPT
2170{ 3071{
2171 return backend; 3072 return backend;
2172} 3073}
2173 3074
2174#if EV_FEATURE_API 3075#if EV_FEATURE_API
2175unsigned int 3076unsigned int
2176ev_iteration (EV_P) 3077ev_iteration (EV_P) EV_NOEXCEPT
2177{ 3078{
2178 return loop_count; 3079 return loop_count;
2179} 3080}
2180 3081
2181unsigned int 3082unsigned int
2182ev_depth (EV_P) 3083ev_depth (EV_P) EV_NOEXCEPT
2183{ 3084{
2184 return loop_depth; 3085 return loop_depth;
2185} 3086}
2186 3087
2187void 3088void
2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3089ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2189{ 3090{
2190 io_blocktime = interval; 3091 io_blocktime = interval;
2191} 3092}
2192 3093
2193void 3094void
2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3095ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2195{ 3096{
2196 timeout_blocktime = interval; 3097 timeout_blocktime = interval;
2197} 3098}
2198 3099
2199void 3100void
2200ev_set_userdata (EV_P_ void *data) 3101ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2201{ 3102{
2202 userdata = data; 3103 userdata = data;
2203} 3104}
2204 3105
2205void * 3106void *
2206ev_userdata (EV_P) 3107ev_userdata (EV_P) EV_NOEXCEPT
2207{ 3108{
2208 return userdata; 3109 return userdata;
2209} 3110}
2210 3111
2211void 3112void
2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3113ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2213{ 3114{
2214 invoke_cb = invoke_pending_cb; 3115 invoke_cb = invoke_pending_cb;
2215} 3116}
2216 3117
2217void 3118void
2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3119ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2219{ 3120{
2220 release_cb = release; 3121 release_cb = release;
2221 acquire_cb = acquire; 3122 acquire_cb = acquire;
2222} 3123}
2223#endif 3124#endif
2224 3125
2225/* initialise a loop structure, must be zero-initialised */ 3126/* initialise a loop structure, must be zero-initialised */
2226static void noinline ecb_cold 3127ecb_noinline ecb_cold
3128static void
2227loop_init (EV_P_ unsigned int flags) 3129loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2228{ 3130{
2229 if (!backend) 3131 if (!backend)
2230 { 3132 {
2231 origflags = flags; 3133 origflags = flags;
2232 3134
… …
2277#if EV_ASYNC_ENABLE 3179#if EV_ASYNC_ENABLE
2278 async_pending = 0; 3180 async_pending = 0;
2279#endif 3181#endif
2280 pipe_write_skipped = 0; 3182 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0; 3183 pipe_write_wanted = 0;
3184 evpipe [0] = -1;
3185 evpipe [1] = -1;
2282#if EV_USE_INOTIFY 3186#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3187 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif 3188#endif
2285#if EV_USE_SIGNALFD 3189#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3190 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2287#endif 3191#endif
3192#if EV_USE_TIMERFD
3193 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3194#endif
2288 3195
2289 if (!(flags & EVBACKEND_MASK)) 3196 if (!(flags & EVBACKEND_MASK))
2290 flags |= ev_recommended_backends (); 3197 flags |= ev_recommended_backends ();
2291 3198
2292#if EV_USE_IOCP 3199#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3200 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif 3201#endif
2295#if EV_USE_PORT 3202#if EV_USE_PORT
2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3203 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2297#endif 3204#endif
2298#if EV_USE_KQUEUE 3205#if EV_USE_KQUEUE
2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3206 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3207#endif
3208#if EV_USE_IOURING
3209 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3210#endif
3211#if EV_USE_LINUXAIO
3212 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2300#endif 3213#endif
2301#if EV_USE_EPOLL 3214#if EV_USE_EPOLL
2302 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2303#endif 3216#endif
2304#if EV_USE_POLL 3217#if EV_USE_POLL
2305 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2306#endif 3219#endif
2307#if EV_USE_SELECT 3220#if EV_USE_SELECT
2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3221 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2309#endif 3222#endif
2310 3223
2311 ev_prepare_init (&pending_w, pendingcb); 3224 ev_prepare_init (&pending_w, pendingcb);
2312 3225
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2316#endif 3229#endif
2317 } 3230 }
2318} 3231}
2319 3232
2320/* free up a loop structure */ 3233/* free up a loop structure */
2321void ecb_cold 3234ecb_cold
3235void
2322ev_loop_destroy (EV_P) 3236ev_loop_destroy (EV_P)
2323{ 3237{
2324 int i; 3238 int i;
2325 3239
2326#if EV_MULTIPLICITY 3240#if EV_MULTIPLICITY
… …
2329 return; 3243 return;
2330#endif 3244#endif
2331 3245
2332#if EV_CLEANUP_ENABLE 3246#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */ 3247 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt)) 3248 if (ecb_expect_false (cleanupcnt))
2335 { 3249 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3250 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING; 3251 EV_INVOKE_PENDING;
2338 } 3252 }
2339#endif 3253#endif
2340 3254
2341#if EV_CHILD_ENABLE 3255#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev)) 3256 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2343 { 3257 {
2344 ev_ref (EV_A); /* child watcher */ 3258 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev); 3259 ev_signal_stop (EV_A_ &childev);
2346 } 3260 }
2347#endif 3261#endif
… …
2349 if (ev_is_active (&pipe_w)) 3263 if (ev_is_active (&pipe_w))
2350 { 3264 {
2351 /*ev_ref (EV_A);*/ 3265 /*ev_ref (EV_A);*/
2352 /*ev_io_stop (EV_A_ &pipe_w);*/ 3266 /*ev_io_stop (EV_A_ &pipe_w);*/
2353 3267
2354#if EV_USE_EVENTFD
2355 if (evfd >= 0)
2356 close (evfd);
2357#endif
2358
2359 if (evpipe [0] >= 0)
2360 {
2361 EV_WIN32_CLOSE_FD (evpipe [0]); 3268 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2362 EV_WIN32_CLOSE_FD (evpipe [1]); 3269 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2363 }
2364 } 3270 }
2365 3271
2366#if EV_USE_SIGNALFD 3272#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w)) 3273 if (ev_is_active (&sigfd_w))
2368 close (sigfd); 3274 close (sigfd);
2369#endif 3275#endif
2370 3276
3277#if EV_USE_TIMERFD
3278 if (ev_is_active (&timerfd_w))
3279 close (timerfd);
3280#endif
3281
2371#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2372 if (fs_fd >= 0) 3283 if (fs_fd >= 0)
2373 close (fs_fd); 3284 close (fs_fd);
2374#endif 3285#endif
2375 3286
2376 if (backend_fd >= 0) 3287 if (backend_fd >= 0)
2377 close (backend_fd); 3288 close (backend_fd);
2378 3289
2379#if EV_USE_IOCP 3290#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3291 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif 3292#endif
2382#if EV_USE_PORT 3293#if EV_USE_PORT
2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3294 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2384#endif 3295#endif
2385#if EV_USE_KQUEUE 3296#if EV_USE_KQUEUE
2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3297 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3298#endif
3299#if EV_USE_IOURING
3300 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3301#endif
3302#if EV_USE_LINUXAIO
3303 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2387#endif 3304#endif
2388#if EV_USE_EPOLL 3305#if EV_USE_EPOLL
2389 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3306 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2390#endif 3307#endif
2391#if EV_USE_POLL 3308#if EV_USE_POLL
2392 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3309 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2393#endif 3310#endif
2394#if EV_USE_SELECT 3311#if EV_USE_SELECT
2395 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3312 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2396#endif 3313#endif
2397 3314
2398 for (i = NUMPRI; i--; ) 3315 for (i = NUMPRI; i--; )
2399 { 3316 {
2400 array_free (pending, [i]); 3317 array_free (pending, [i]);
… …
2442 3359
2443inline_size void 3360inline_size void
2444loop_fork (EV_P) 3361loop_fork (EV_P)
2445{ 3362{
2446#if EV_USE_PORT 3363#if EV_USE_PORT
2447 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3364 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2448#endif 3365#endif
2449#if EV_USE_KQUEUE 3366#if EV_USE_KQUEUE
2450 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3367 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3368#endif
3369#if EV_USE_IOURING
3370 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3371#endif
3372#if EV_USE_LINUXAIO
3373 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2451#endif 3374#endif
2452#if EV_USE_EPOLL 3375#if EV_USE_EPOLL
2453 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3376 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2454#endif 3377#endif
2455#if EV_USE_INOTIFY 3378#if EV_USE_INOTIFY
2456 infy_fork (EV_A); 3379 infy_fork (EV_A);
2457#endif 3380#endif
2458 3381
3382 if (postfork != 2)
3383 {
3384 #if EV_USE_SIGNALFD
3385 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3386 #endif
3387
3388 #if EV_USE_TIMERFD
3389 if (ev_is_active (&timerfd_w))
3390 {
3391 ev_ref (EV_A);
3392 ev_io_stop (EV_A_ &timerfd_w);
3393
3394 close (timerfd);
3395 timerfd = -2;
3396
3397 evtimerfd_init (EV_A);
3398 /* reschedule periodics, in case we missed something */
3399 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3400 }
3401 #endif
3402
3403 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2459 if (ev_is_active (&pipe_w)) 3404 if (ev_is_active (&pipe_w))
2460 { 3405 {
2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3406 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2462 3407
2463 ev_ref (EV_A); 3408 ev_ref (EV_A);
2464 ev_io_stop (EV_A_ &pipe_w); 3409 ev_io_stop (EV_A_ &pipe_w);
2465 3410
2466#if EV_USE_EVENTFD
2467 if (evfd >= 0)
2468 close (evfd);
2469#endif
2470
2471 if (evpipe [0] >= 0) 3411 if (evpipe [0] >= 0)
2472 {
2473 EV_WIN32_CLOSE_FD (evpipe [0]); 3412 EV_WIN32_CLOSE_FD (evpipe [0]);
2474 EV_WIN32_CLOSE_FD (evpipe [1]); 3413
3414 evpipe_init (EV_A);
3415 /* iterate over everything, in case we missed something before */
3416 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2475 } 3417 }
2476 3418 #endif
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2478 evpipe_init (EV_A);
2479 /* now iterate over everything, in case we missed something */
2480 pipecb (EV_A_ &pipe_w, EV_READ);
2481#endif
2482 } 3419 }
2483 3420
2484 postfork = 0; 3421 postfork = 0;
2485} 3422}
2486 3423
2487#if EV_MULTIPLICITY 3424#if EV_MULTIPLICITY
2488 3425
3426ecb_cold
2489struct ev_loop * ecb_cold 3427struct ev_loop *
2490ev_loop_new (unsigned int flags) 3428ev_loop_new (unsigned int flags) EV_NOEXCEPT
2491{ 3429{
2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2493 3431
2494 memset (EV_A, 0, sizeof (struct ev_loop)); 3432 memset (EV_A, 0, sizeof (struct ev_loop));
2495 loop_init (EV_A_ flags); 3433 loop_init (EV_A_ flags);
… …
2502} 3440}
2503 3441
2504#endif /* multiplicity */ 3442#endif /* multiplicity */
2505 3443
2506#if EV_VERIFY 3444#if EV_VERIFY
2507static void noinline ecb_cold 3445ecb_noinline ecb_cold
3446static void
2508verify_watcher (EV_P_ W w) 3447verify_watcher (EV_P_ W w)
2509{ 3448{
2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3449 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2511 3450
2512 if (w->pending) 3451 if (w->pending)
2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3452 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2514} 3453}
2515 3454
2516static void noinline ecb_cold 3455ecb_noinline ecb_cold
3456static void
2517verify_heap (EV_P_ ANHE *heap, int N) 3457verify_heap (EV_P_ ANHE *heap, int N)
2518{ 3458{
2519 int i; 3459 int i;
2520 3460
2521 for (i = HEAP0; i < N + HEAP0; ++i) 3461 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2526 3466
2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2528 } 3468 }
2529} 3469}
2530 3470
2531static void noinline ecb_cold 3471ecb_noinline ecb_cold
3472static void
2532array_verify (EV_P_ W *ws, int cnt) 3473array_verify (EV_P_ W *ws, int cnt)
2533{ 3474{
2534 while (cnt--) 3475 while (cnt--)
2535 { 3476 {
2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3477 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2539} 3480}
2540#endif 3481#endif
2541 3482
2542#if EV_FEATURE_API 3483#if EV_FEATURE_API
2543void ecb_cold 3484void ecb_cold
2544ev_verify (EV_P) 3485ev_verify (EV_P) EV_NOEXCEPT
2545{ 3486{
2546#if EV_VERIFY 3487#if EV_VERIFY
2547 int i; 3488 int i;
2548 WL w; 3489 WL w, w2;
2549 3490
2550 assert (activecnt >= -1); 3491 assert (activecnt >= -1);
2551 3492
2552 assert (fdchangemax >= fdchangecnt); 3493 assert (fdchangemax >= fdchangecnt);
2553 for (i = 0; i < fdchangecnt; ++i) 3494 for (i = 0; i < fdchangecnt; ++i)
2554 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3495 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2555 3496
2556 assert (anfdmax >= 0); 3497 assert (anfdmax >= 0);
2557 for (i = 0; i < anfdmax; ++i) 3498 for (i = 0; i < anfdmax; ++i)
3499 {
3500 int j = 0;
3501
2558 for (w = anfds [i].head; w; w = w->next) 3502 for (w = w2 = anfds [i].head; w; w = w->next)
2559 { 3503 {
2560 verify_watcher (EV_A_ (W)w); 3504 verify_watcher (EV_A_ (W)w);
3505
3506 if (j++ & 1)
3507 {
3508 assert (("libev: io watcher list contains a loop", w != w2));
3509 w2 = w2->next;
3510 }
3511
2561 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3512 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2562 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3513 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2563 } 3514 }
3515 }
2564 3516
2565 assert (timermax >= timercnt); 3517 assert (timermax >= timercnt);
2566 verify_heap (EV_A_ timers, timercnt); 3518 verify_heap (EV_A_ timers, timercnt);
2567 3519
2568#if EV_PERIODIC_ENABLE 3520#if EV_PERIODIC_ENABLE
… …
2614#endif 3566#endif
2615} 3567}
2616#endif 3568#endif
2617 3569
2618#if EV_MULTIPLICITY 3570#if EV_MULTIPLICITY
3571ecb_cold
2619struct ev_loop * ecb_cold 3572struct ev_loop *
2620#else 3573#else
2621int 3574int
2622#endif 3575#endif
2623ev_default_loop (unsigned int flags) 3576ev_default_loop (unsigned int flags) EV_NOEXCEPT
2624{ 3577{
2625 if (!ev_default_loop_ptr) 3578 if (!ev_default_loop_ptr)
2626 { 3579 {
2627#if EV_MULTIPLICITY 3580#if EV_MULTIPLICITY
2628 EV_P = ev_default_loop_ptr = &default_loop_struct; 3581 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2647 3600
2648 return ev_default_loop_ptr; 3601 return ev_default_loop_ptr;
2649} 3602}
2650 3603
2651void 3604void
2652ev_loop_fork (EV_P) 3605ev_loop_fork (EV_P) EV_NOEXCEPT
2653{ 3606{
2654 postfork = 1; /* must be in line with ev_default_fork */ 3607 postfork = 1;
2655} 3608}
2656 3609
2657/*****************************************************************************/ 3610/*****************************************************************************/
2658 3611
2659void 3612void
… …
2661{ 3614{
2662 EV_CB_INVOKE ((W)w, revents); 3615 EV_CB_INVOKE ((W)w, revents);
2663} 3616}
2664 3617
2665unsigned int 3618unsigned int
2666ev_pending_count (EV_P) 3619ev_pending_count (EV_P) EV_NOEXCEPT
2667{ 3620{
2668 int pri; 3621 int pri;
2669 unsigned int count = 0; 3622 unsigned int count = 0;
2670 3623
2671 for (pri = NUMPRI; pri--; ) 3624 for (pri = NUMPRI; pri--; )
2672 count += pendingcnt [pri]; 3625 count += pendingcnt [pri];
2673 3626
2674 return count; 3627 return count;
2675} 3628}
2676 3629
2677void noinline 3630ecb_noinline
3631void
2678ev_invoke_pending (EV_P) 3632ev_invoke_pending (EV_P)
2679{ 3633{
2680 int pri; 3634 pendingpri = NUMPRI;
2681 3635
2682 for (pri = NUMPRI; pri--; ) 3636 do
3637 {
3638 --pendingpri;
3639
3640 /* pendingpri possibly gets modified in the inner loop */
2683 while (pendingcnt [pri]) 3641 while (pendingcnt [pendingpri])
2684 { 3642 {
2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3643 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2686 3644
2687 p->w->pending = 0; 3645 p->w->pending = 0;
2688 EV_CB_INVOKE (p->w, p->events); 3646 EV_CB_INVOKE (p->w, p->events);
2689 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
2690 } 3648 }
3649 }
3650 while (pendingpri);
2691} 3651}
2692 3652
2693#if EV_IDLE_ENABLE 3653#if EV_IDLE_ENABLE
2694/* make idle watchers pending. this handles the "call-idle */ 3654/* make idle watchers pending. this handles the "call-idle */
2695/* only when higher priorities are idle" logic */ 3655/* only when higher priorities are idle" logic */
2696inline_size void 3656inline_size void
2697idle_reify (EV_P) 3657idle_reify (EV_P)
2698{ 3658{
2699 if (expect_false (idleall)) 3659 if (ecb_expect_false (idleall))
2700 { 3660 {
2701 int pri; 3661 int pri;
2702 3662
2703 for (pri = NUMPRI; pri--; ) 3663 for (pri = NUMPRI; pri--; )
2704 { 3664 {
… …
2734 { 3694 {
2735 ev_at (w) += w->repeat; 3695 ev_at (w) += w->repeat;
2736 if (ev_at (w) < mn_now) 3696 if (ev_at (w) < mn_now)
2737 ev_at (w) = mn_now; 3697 ev_at (w) = mn_now;
2738 3698
2739 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3699 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2740 3700
2741 ANHE_at_cache (timers [HEAP0]); 3701 ANHE_at_cache (timers [HEAP0]);
2742 downheap (timers, timercnt, HEAP0); 3702 downheap (timers, timercnt, HEAP0);
2743 } 3703 }
2744 else 3704 else
… …
2753 } 3713 }
2754} 3714}
2755 3715
2756#if EV_PERIODIC_ENABLE 3716#if EV_PERIODIC_ENABLE
2757 3717
2758static void noinline 3718ecb_noinline
3719static void
2759periodic_recalc (EV_P_ ev_periodic *w) 3720periodic_recalc (EV_P_ ev_periodic *w)
2760{ 3721{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3722 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2762 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3723 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763 3724
… …
2765 while (at <= ev_rt_now) 3726 while (at <= ev_rt_now)
2766 { 3727 {
2767 ev_tstamp nat = at + w->interval; 3728 ev_tstamp nat = at + w->interval;
2768 3729
2769 /* when resolution fails us, we use ev_rt_now */ 3730 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at)) 3731 if (ecb_expect_false (nat == at))
2771 { 3732 {
2772 at = ev_rt_now; 3733 at = ev_rt_now;
2773 break; 3734 break;
2774 } 3735 }
2775 3736
… …
2785{ 3746{
2786 EV_FREQUENT_CHECK; 3747 EV_FREQUENT_CHECK;
2787 3748
2788 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3749 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2789 { 3750 {
2790 int feed_count = 0;
2791
2792 do 3751 do
2793 { 3752 {
2794 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3753 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2795 3754
2796 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3755 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2823 } 3782 }
2824} 3783}
2825 3784
2826/* simply recalculate all periodics */ 3785/* simply recalculate all periodics */
2827/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3786/* TODO: maybe ensure that at least one event happens when jumping forward? */
2828static void noinline ecb_cold 3787ecb_noinline ecb_cold
3788static void
2829periodics_reschedule (EV_P) 3789periodics_reschedule (EV_P)
2830{ 3790{
2831 int i; 3791 int i;
2832 3792
2833 /* adjust periodics after time jump */ 3793 /* adjust periodics after time jump */
… …
2846 reheap (periodics, periodiccnt); 3806 reheap (periodics, periodiccnt);
2847} 3807}
2848#endif 3808#endif
2849 3809
2850/* adjust all timers by a given offset */ 3810/* adjust all timers by a given offset */
2851static void noinline ecb_cold 3811ecb_noinline ecb_cold
3812static void
2852timers_reschedule (EV_P_ ev_tstamp adjust) 3813timers_reschedule (EV_P_ ev_tstamp adjust)
2853{ 3814{
2854 int i; 3815 int i;
2855 3816
2856 for (i = 0; i < timercnt; ++i) 3817 for (i = 0; i < timercnt; ++i)
… …
2865/* also detect if there was a timejump, and act accordingly */ 3826/* also detect if there was a timejump, and act accordingly */
2866inline_speed void 3827inline_speed void
2867time_update (EV_P_ ev_tstamp max_block) 3828time_update (EV_P_ ev_tstamp max_block)
2868{ 3829{
2869#if EV_USE_MONOTONIC 3830#if EV_USE_MONOTONIC
2870 if (expect_true (have_monotonic)) 3831 if (ecb_expect_true (have_monotonic))
2871 { 3832 {
2872 int i; 3833 int i;
2873 ev_tstamp odiff = rtmn_diff; 3834 ev_tstamp odiff = rtmn_diff;
2874 3835
2875 mn_now = get_clock (); 3836 mn_now = get_clock ();
2876 3837
2877 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2878 /* interpolate in the meantime */ 3839 /* interpolate in the meantime */
2879 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3840 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2880 { 3841 {
2881 ev_rt_now = rtmn_diff + mn_now; 3842 ev_rt_now = rtmn_diff + mn_now;
2882 return; 3843 return;
2883 } 3844 }
2884 3845
… …
2898 ev_tstamp diff; 3859 ev_tstamp diff;
2899 rtmn_diff = ev_rt_now - mn_now; 3860 rtmn_diff = ev_rt_now - mn_now;
2900 3861
2901 diff = odiff - rtmn_diff; 3862 diff = odiff - rtmn_diff;
2902 3863
2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3864 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2904 return; /* all is well */ 3865 return; /* all is well */
2905 3866
2906 ev_rt_now = ev_time (); 3867 ev_rt_now = ev_time ();
2907 mn_now = get_clock (); 3868 mn_now = get_clock ();
2908 now_floor = mn_now; 3869 now_floor = mn_now;
… …
2917 else 3878 else
2918#endif 3879#endif
2919 { 3880 {
2920 ev_rt_now = ev_time (); 3881 ev_rt_now = ev_time ();
2921 3882
2922 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3883 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2923 { 3884 {
2924 /* adjust timers. this is easy, as the offset is the same for all of them */ 3885 /* adjust timers. this is easy, as the offset is the same for all of them */
2925 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3886 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2926#if EV_PERIODIC_ENABLE 3887#if EV_PERIODIC_ENABLE
2927 periodics_reschedule (EV_A); 3888 periodics_reschedule (EV_A);
… …
2930 3891
2931 mn_now = ev_rt_now; 3892 mn_now = ev_rt_now;
2932 } 3893 }
2933} 3894}
2934 3895
2935void 3896int
2936ev_run (EV_P_ int flags) 3897ev_run (EV_P_ int flags)
2937{ 3898{
2938#if EV_FEATURE_API 3899#if EV_FEATURE_API
2939 ++loop_depth; 3900 ++loop_depth;
2940#endif 3901#endif
… …
2950#if EV_VERIFY >= 2 3911#if EV_VERIFY >= 2
2951 ev_verify (EV_A); 3912 ev_verify (EV_A);
2952#endif 3913#endif
2953 3914
2954#ifndef _WIN32 3915#ifndef _WIN32
2955 if (expect_false (curpid)) /* penalise the forking check even more */ 3916 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2956 if (expect_false (getpid () != curpid)) 3917 if (ecb_expect_false (getpid () != curpid))
2957 { 3918 {
2958 curpid = getpid (); 3919 curpid = getpid ();
2959 postfork = 1; 3920 postfork = 1;
2960 } 3921 }
2961#endif 3922#endif
2962 3923
2963#if EV_FORK_ENABLE 3924#if EV_FORK_ENABLE
2964 /* we might have forked, so queue fork handlers */ 3925 /* we might have forked, so queue fork handlers */
2965 if (expect_false (postfork)) 3926 if (ecb_expect_false (postfork))
2966 if (forkcnt) 3927 if (forkcnt)
2967 { 3928 {
2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3929 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2969 EV_INVOKE_PENDING; 3930 EV_INVOKE_PENDING;
2970 } 3931 }
2971#endif 3932#endif
2972 3933
2973#if EV_PREPARE_ENABLE 3934#if EV_PREPARE_ENABLE
2974 /* queue prepare watchers (and execute them) */ 3935 /* queue prepare watchers (and execute them) */
2975 if (expect_false (preparecnt)) 3936 if (ecb_expect_false (preparecnt))
2976 { 3937 {
2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2978 EV_INVOKE_PENDING; 3939 EV_INVOKE_PENDING;
2979 } 3940 }
2980#endif 3941#endif
2981 3942
2982 if (expect_false (loop_done)) 3943 if (ecb_expect_false (loop_done))
2983 break; 3944 break;
2984 3945
2985 /* we might have forked, so reify kernel state if necessary */ 3946 /* we might have forked, so reify kernel state if necessary */
2986 if (expect_false (postfork)) 3947 if (ecb_expect_false (postfork))
2987 loop_fork (EV_A); 3948 loop_fork (EV_A);
2988 3949
2989 /* update fd-related kernel structures */ 3950 /* update fd-related kernel structures */
2990 fd_reify (EV_A); 3951 fd_reify (EV_A);
2991 3952
… …
2996 3957
2997 /* remember old timestamp for io_blocktime calculation */ 3958 /* remember old timestamp for io_blocktime calculation */
2998 ev_tstamp prev_mn_now = mn_now; 3959 ev_tstamp prev_mn_now = mn_now;
2999 3960
3000 /* update time to cancel out callback processing overhead */ 3961 /* update time to cancel out callback processing overhead */
3001 time_update (EV_A_ 1e100); 3962 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3002 3963
3003 /* from now on, we want a pipe-wake-up */ 3964 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1; 3965 pipe_write_wanted = 1;
3005 3966
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3967 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007 3968
3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3969 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3009 { 3970 {
3010 waittime = MAX_BLOCKTIME; 3971 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3011 3972
3012 if (timercnt) 3973 if (timercnt)
3013 { 3974 {
3014 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3015 if (waittime > to) waittime = to; 3976 if (waittime > to) waittime = to;
… …
3022 if (waittime > to) waittime = to; 3983 if (waittime > to) waittime = to;
3023 } 3984 }
3024#endif 3985#endif
3025 3986
3026 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3987 /* don't let timeouts decrease the waittime below timeout_blocktime */
3027 if (expect_false (waittime < timeout_blocktime)) 3988 if (ecb_expect_false (waittime < timeout_blocktime))
3028 waittime = timeout_blocktime; 3989 waittime = timeout_blocktime;
3029 3990
3030 /* at this point, we NEED to wait, so we have to ensure */ 3991 /* now there are two more special cases left, either we have
3031 /* to pass a minimum nonzero value to the backend */ 3992 * already-expired timers, so we should not sleep, or we have timers
3993 * that expire very soon, in which case we need to wait for a minimum
3994 * amount of time for some event loop backends.
3995 */
3032 if (expect_false (waittime < backend_mintime)) 3996 if (ecb_expect_false (waittime < backend_mintime))
3997 waittime = waittime <= EV_TS_CONST (0.)
3998 ? EV_TS_CONST (0.)
3033 waittime = backend_mintime; 3999 : backend_mintime;
3034 4000
3035 /* extra check because io_blocktime is commonly 0 */ 4001 /* extra check because io_blocktime is commonly 0 */
3036 if (expect_false (io_blocktime)) 4002 if (ecb_expect_false (io_blocktime))
3037 { 4003 {
3038 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4004 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3039 4005
3040 if (sleeptime > waittime - backend_mintime) 4006 if (sleeptime > waittime - backend_mintime)
3041 sleeptime = waittime - backend_mintime; 4007 sleeptime = waittime - backend_mintime;
3042 4008
3043 if (expect_true (sleeptime > 0.)) 4009 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3044 { 4010 {
3045 ev_sleep (sleeptime); 4011 ev_sleep (sleeptime);
3046 waittime -= sleeptime; 4012 waittime -= sleeptime;
3047 } 4013 }
3048 } 4014 }
… …
3055 backend_poll (EV_A_ waittime); 4021 backend_poll (EV_A_ waittime);
3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4022 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057 4023
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 4024 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059 4025
4026 ECB_MEMORY_FENCE_ACQUIRE;
3060 if (pipe_write_skipped) 4027 if (pipe_write_skipped)
3061 { 4028 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4029 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4030 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 } 4031 }
3065 4032
3066
3067 /* update ev_rt_now, do magic */ 4033 /* update ev_rt_now, do magic */
3068 time_update (EV_A_ waittime + sleeptime); 4034 time_update (EV_A_ waittime + sleeptime);
3069 } 4035 }
3070 4036
3071 /* queue pending timers and reschedule them */ 4037 /* queue pending timers and reschedule them */
… …
3079 idle_reify (EV_A); 4045 idle_reify (EV_A);
3080#endif 4046#endif
3081 4047
3082#if EV_CHECK_ENABLE 4048#if EV_CHECK_ENABLE
3083 /* queue check watchers, to be executed first */ 4049 /* queue check watchers, to be executed first */
3084 if (expect_false (checkcnt)) 4050 if (ecb_expect_false (checkcnt))
3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4051 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif 4052#endif
3087 4053
3088 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3089 } 4055 }
3090 while (expect_true ( 4056 while (ecb_expect_true (
3091 activecnt 4057 activecnt
3092 && !loop_done 4058 && !loop_done
3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4059 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3094 )); 4060 ));
3095 4061
… …
3097 loop_done = EVBREAK_CANCEL; 4063 loop_done = EVBREAK_CANCEL;
3098 4064
3099#if EV_FEATURE_API 4065#if EV_FEATURE_API
3100 --loop_depth; 4066 --loop_depth;
3101#endif 4067#endif
3102}
3103 4068
4069 return activecnt;
4070}
4071
3104void 4072void
3105ev_break (EV_P_ int how) 4073ev_break (EV_P_ int how) EV_NOEXCEPT
3106{ 4074{
3107 loop_done = how; 4075 loop_done = how;
3108} 4076}
3109 4077
3110void 4078void
3111ev_ref (EV_P) 4079ev_ref (EV_P) EV_NOEXCEPT
3112{ 4080{
3113 ++activecnt; 4081 ++activecnt;
3114} 4082}
3115 4083
3116void 4084void
3117ev_unref (EV_P) 4085ev_unref (EV_P) EV_NOEXCEPT
3118{ 4086{
3119 --activecnt; 4087 --activecnt;
3120} 4088}
3121 4089
3122void 4090void
3123ev_now_update (EV_P) 4091ev_now_update (EV_P) EV_NOEXCEPT
3124{ 4092{
3125 time_update (EV_A_ 1e100); 4093 time_update (EV_A_ EV_TSTAMP_HUGE);
3126} 4094}
3127 4095
3128void 4096void
3129ev_suspend (EV_P) 4097ev_suspend (EV_P) EV_NOEXCEPT
3130{ 4098{
3131 ev_now_update (EV_A); 4099 ev_now_update (EV_A);
3132} 4100}
3133 4101
3134void 4102void
3135ev_resume (EV_P) 4103ev_resume (EV_P) EV_NOEXCEPT
3136{ 4104{
3137 ev_tstamp mn_prev = mn_now; 4105 ev_tstamp mn_prev = mn_now;
3138 4106
3139 ev_now_update (EV_A); 4107 ev_now_update (EV_A);
3140 timers_reschedule (EV_A_ mn_now - mn_prev); 4108 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3157inline_size void 4125inline_size void
3158wlist_del (WL *head, WL elem) 4126wlist_del (WL *head, WL elem)
3159{ 4127{
3160 while (*head) 4128 while (*head)
3161 { 4129 {
3162 if (expect_true (*head == elem)) 4130 if (ecb_expect_true (*head == elem))
3163 { 4131 {
3164 *head = elem->next; 4132 *head = elem->next;
3165 break; 4133 break;
3166 } 4134 }
3167 4135
… …
3179 w->pending = 0; 4147 w->pending = 0;
3180 } 4148 }
3181} 4149}
3182 4150
3183int 4151int
3184ev_clear_pending (EV_P_ void *w) 4152ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3185{ 4153{
3186 W w_ = (W)w; 4154 W w_ = (W)w;
3187 int pending = w_->pending; 4155 int pending = w_->pending;
3188 4156
3189 if (expect_true (pending)) 4157 if (ecb_expect_true (pending))
3190 { 4158 {
3191 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4159 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3192 p->w = (W)&pending_w; 4160 p->w = (W)&pending_w;
3193 w_->pending = 0; 4161 w_->pending = 0;
3194 return p->events; 4162 return p->events;
… …
3221 w->active = 0; 4189 w->active = 0;
3222} 4190}
3223 4191
3224/*****************************************************************************/ 4192/*****************************************************************************/
3225 4193
3226void noinline 4194ecb_noinline
4195void
3227ev_io_start (EV_P_ ev_io *w) 4196ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3228{ 4197{
3229 int fd = w->fd; 4198 int fd = w->fd;
3230 4199
3231 if (expect_false (ev_is_active (w))) 4200 if (ecb_expect_false (ev_is_active (w)))
3232 return; 4201 return;
3233 4202
3234 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4203 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3235 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4204 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3236 4205
4206#if EV_VERIFY >= 2
4207 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4208#endif
3237 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3238 4210
3239 ev_start (EV_A_ (W)w, 1); 4211 ev_start (EV_A_ (W)w, 1);
3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4212 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3241 wlist_add (&anfds[fd].head, (WL)w); 4213 wlist_add (&anfds[fd].head, (WL)w);
4214
4215 /* common bug, apparently */
4216 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3242 4217
3243 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4218 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3244 w->events &= ~EV__IOFDSET; 4219 w->events &= ~EV__IOFDSET;
3245 4220
3246 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3247} 4222}
3248 4223
3249void noinline 4224ecb_noinline
4225void
3250ev_io_stop (EV_P_ ev_io *w) 4226ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3251{ 4227{
3252 clear_pending (EV_A_ (W)w); 4228 clear_pending (EV_A_ (W)w);
3253 if (expect_false (!ev_is_active (w))) 4229 if (ecb_expect_false (!ev_is_active (w)))
3254 return; 4230 return;
3255 4231
3256 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4232 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3257 4233
4234#if EV_VERIFY >= 2
4235 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4236#endif
3258 EV_FREQUENT_CHECK; 4237 EV_FREQUENT_CHECK;
3259 4238
3260 wlist_del (&anfds[w->fd].head, (WL)w); 4239 wlist_del (&anfds[w->fd].head, (WL)w);
3261 ev_stop (EV_A_ (W)w); 4240 ev_stop (EV_A_ (W)w);
3262 4241
3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3264 4243
3265 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
3266} 4245}
3267 4246
3268void noinline 4247ecb_noinline
4248void
3269ev_timer_start (EV_P_ ev_timer *w) 4249ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3270{ 4250{
3271 if (expect_false (ev_is_active (w))) 4251 if (ecb_expect_false (ev_is_active (w)))
3272 return; 4252 return;
3273 4253
3274 ev_at (w) += mn_now; 4254 ev_at (w) += mn_now;
3275 4255
3276 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4256 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3277 4257
3278 EV_FREQUENT_CHECK; 4258 EV_FREQUENT_CHECK;
3279 4259
3280 ++timercnt; 4260 ++timercnt;
3281 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4261 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3282 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4262 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3283 ANHE_w (timers [ev_active (w)]) = (WT)w; 4263 ANHE_w (timers [ev_active (w)]) = (WT)w;
3284 ANHE_at_cache (timers [ev_active (w)]); 4264 ANHE_at_cache (timers [ev_active (w)]);
3285 upheap (timers, ev_active (w)); 4265 upheap (timers, ev_active (w));
3286 4266
3287 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3288 4268
3289 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4269 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3290} 4270}
3291 4271
3292void noinline 4272ecb_noinline
4273void
3293ev_timer_stop (EV_P_ ev_timer *w) 4274ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3294{ 4275{
3295 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3296 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3297 return; 4278 return;
3298 4279
3299 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3300 4281
3301 { 4282 {
… …
3303 4284
3304 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4285 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3305 4286
3306 --timercnt; 4287 --timercnt;
3307 4288
3308 if (expect_true (active < timercnt + HEAP0)) 4289 if (ecb_expect_true (active < timercnt + HEAP0))
3309 { 4290 {
3310 timers [active] = timers [timercnt + HEAP0]; 4291 timers [active] = timers [timercnt + HEAP0];
3311 adjustheap (timers, timercnt, active); 4292 adjustheap (timers, timercnt, active);
3312 } 4293 }
3313 } 4294 }
… …
3317 ev_stop (EV_A_ (W)w); 4298 ev_stop (EV_A_ (W)w);
3318 4299
3319 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
3320} 4301}
3321 4302
3322void noinline 4303ecb_noinline
4304void
3323ev_timer_again (EV_P_ ev_timer *w) 4305ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3324{ 4306{
3325 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
3326 4308
3327 clear_pending (EV_A_ (W)w); 4309 clear_pending (EV_A_ (W)w);
3328 4310
… …
3345 4327
3346 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
3347} 4329}
3348 4330
3349ev_tstamp 4331ev_tstamp
3350ev_timer_remaining (EV_P_ ev_timer *w) 4332ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3351{ 4333{
3352 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4334 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3353} 4335}
3354 4336
3355#if EV_PERIODIC_ENABLE 4337#if EV_PERIODIC_ENABLE
3356void noinline 4338ecb_noinline
4339void
3357ev_periodic_start (EV_P_ ev_periodic *w) 4340ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3358{ 4341{
3359 if (expect_false (ev_is_active (w))) 4342 if (ecb_expect_false (ev_is_active (w)))
3360 return; 4343 return;
4344
4345#if EV_USE_TIMERFD
4346 if (timerfd == -2)
4347 evtimerfd_init (EV_A);
4348#endif
3361 4349
3362 if (w->reschedule_cb) 4350 if (w->reschedule_cb)
3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4351 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3364 else if (w->interval) 4352 else if (w->interval)
3365 { 4353 {
… …
3371 4359
3372 EV_FREQUENT_CHECK; 4360 EV_FREQUENT_CHECK;
3373 4361
3374 ++periodiccnt; 4362 ++periodiccnt;
3375 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4363 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3376 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4364 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3377 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4365 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3378 ANHE_at_cache (periodics [ev_active (w)]); 4366 ANHE_at_cache (periodics [ev_active (w)]);
3379 upheap (periodics, ev_active (w)); 4367 upheap (periodics, ev_active (w));
3380 4368
3381 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3382 4370
3383 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4371 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3384} 4372}
3385 4373
3386void noinline 4374ecb_noinline
4375void
3387ev_periodic_stop (EV_P_ ev_periodic *w) 4376ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3388{ 4377{
3389 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
3390 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
3391 return; 4380 return;
3392 4381
3393 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
3394 4383
3395 { 4384 {
… …
3397 4386
3398 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4387 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3399 4388
3400 --periodiccnt; 4389 --periodiccnt;
3401 4390
3402 if (expect_true (active < periodiccnt + HEAP0)) 4391 if (ecb_expect_true (active < periodiccnt + HEAP0))
3403 { 4392 {
3404 periodics [active] = periodics [periodiccnt + HEAP0]; 4393 periodics [active] = periodics [periodiccnt + HEAP0];
3405 adjustheap (periodics, periodiccnt, active); 4394 adjustheap (periodics, periodiccnt, active);
3406 } 4395 }
3407 } 4396 }
… …
3409 ev_stop (EV_A_ (W)w); 4398 ev_stop (EV_A_ (W)w);
3410 4399
3411 EV_FREQUENT_CHECK; 4400 EV_FREQUENT_CHECK;
3412} 4401}
3413 4402
3414void noinline 4403ecb_noinline
4404void
3415ev_periodic_again (EV_P_ ev_periodic *w) 4405ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3416{ 4406{
3417 /* TODO: use adjustheap and recalculation */ 4407 /* TODO: use adjustheap and recalculation */
3418 ev_periodic_stop (EV_A_ w); 4408 ev_periodic_stop (EV_A_ w);
3419 ev_periodic_start (EV_A_ w); 4409 ev_periodic_start (EV_A_ w);
3420} 4410}
… …
3424# define SA_RESTART 0 4414# define SA_RESTART 0
3425#endif 4415#endif
3426 4416
3427#if EV_SIGNAL_ENABLE 4417#if EV_SIGNAL_ENABLE
3428 4418
3429void noinline 4419ecb_noinline
4420void
3430ev_signal_start (EV_P_ ev_signal *w) 4421ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3431{ 4422{
3432 if (expect_false (ev_is_active (w))) 4423 if (ecb_expect_false (ev_is_active (w)))
3433 return; 4424 return;
3434 4425
3435 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3436 4427
3437#if EV_MULTIPLICITY 4428#if EV_MULTIPLICITY
3438 assert (("libev: a signal must not be attached to two different loops", 4429 assert (("libev: a signal must not be attached to two different loops",
3439 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4430 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3440 4431
3441 signals [w->signum - 1].loop = EV_A; 4432 signals [w->signum - 1].loop = EV_A;
4433 ECB_MEMORY_FENCE_RELEASE;
3442#endif 4434#endif
3443 4435
3444 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
3445 4437
3446#if EV_USE_SIGNALFD 4438#if EV_USE_SIGNALFD
… …
3505 } 4497 }
3506 4498
3507 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3508} 4500}
3509 4501
3510void noinline 4502ecb_noinline
4503void
3511ev_signal_stop (EV_P_ ev_signal *w) 4504ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3512{ 4505{
3513 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
3514 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
3515 return; 4508 return;
3516 4509
3517 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
3518 4511
3519 wlist_del (&signals [w->signum - 1].head, (WL)w); 4512 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3547#endif 4540#endif
3548 4541
3549#if EV_CHILD_ENABLE 4542#if EV_CHILD_ENABLE
3550 4543
3551void 4544void
3552ev_child_start (EV_P_ ev_child *w) 4545ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3553{ 4546{
3554#if EV_MULTIPLICITY 4547#if EV_MULTIPLICITY
3555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4548 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3556#endif 4549#endif
3557 if (expect_false (ev_is_active (w))) 4550 if (ecb_expect_false (ev_is_active (w)))
3558 return; 4551 return;
3559 4552
3560 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
3561 4554
3562 ev_start (EV_A_ (W)w, 1); 4555 ev_start (EV_A_ (W)w, 1);
… …
3564 4557
3565 EV_FREQUENT_CHECK; 4558 EV_FREQUENT_CHECK;
3566} 4559}
3567 4560
3568void 4561void
3569ev_child_stop (EV_P_ ev_child *w) 4562ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3570{ 4563{
3571 clear_pending (EV_A_ (W)w); 4564 clear_pending (EV_A_ (W)w);
3572 if (expect_false (!ev_is_active (w))) 4565 if (ecb_expect_false (!ev_is_active (w)))
3573 return; 4566 return;
3574 4567
3575 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3576 4569
3577 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4570 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3591 4584
3592#define DEF_STAT_INTERVAL 5.0074891 4585#define DEF_STAT_INTERVAL 5.0074891
3593#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3594#define MIN_STAT_INTERVAL 0.1074891 4587#define MIN_STAT_INTERVAL 0.1074891
3595 4588
3596static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4589ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3597 4590
3598#if EV_USE_INOTIFY 4591#if EV_USE_INOTIFY
3599 4592
3600/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4593/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3601# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4594# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3602 4595
3603static void noinline 4596ecb_noinline
4597static void
3604infy_add (EV_P_ ev_stat *w) 4598infy_add (EV_P_ ev_stat *w)
3605{ 4599{
3606 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4600 w->wd = inotify_add_watch (fs_fd, w->path,
4601 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4602 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4603 | IN_DONT_FOLLOW | IN_MASK_ADD);
3607 4604
3608 if (w->wd >= 0) 4605 if (w->wd >= 0)
3609 { 4606 {
3610 struct statfs sfs; 4607 struct statfs sfs;
3611 4608
… …
3615 4612
3616 if (!fs_2625) 4613 if (!fs_2625)
3617 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4614 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3618 else if (!statfs (w->path, &sfs) 4615 else if (!statfs (w->path, &sfs)
3619 && (sfs.f_type == 0x1373 /* devfs */ 4616 && (sfs.f_type == 0x1373 /* devfs */
4617 || sfs.f_type == 0x4006 /* fat */
4618 || sfs.f_type == 0x4d44 /* msdos */
3620 || sfs.f_type == 0xEF53 /* ext2/3 */ 4619 || sfs.f_type == 0xEF53 /* ext2/3 */
4620 || sfs.f_type == 0x72b6 /* jffs2 */
4621 || sfs.f_type == 0x858458f6 /* ramfs */
4622 || sfs.f_type == 0x5346544e /* ntfs */
3621 || sfs.f_type == 0x3153464a /* jfs */ 4623 || sfs.f_type == 0x3153464a /* jfs */
4624 || sfs.f_type == 0x9123683e /* btrfs */
3622 || sfs.f_type == 0x52654973 /* reiser3 */ 4625 || sfs.f_type == 0x52654973 /* reiser3 */
3623 || sfs.f_type == 0x01021994 /* tempfs */ 4626 || sfs.f_type == 0x01021994 /* tmpfs */
3624 || sfs.f_type == 0x58465342 /* xfs */)) 4627 || sfs.f_type == 0x58465342 /* xfs */))
3625 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4628 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3626 else 4629 else
3627 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4630 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3628 } 4631 }
… …
3663 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4666 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3664 ev_timer_again (EV_A_ &w->timer); 4667 ev_timer_again (EV_A_ &w->timer);
3665 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4668 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3666} 4669}
3667 4670
3668static void noinline 4671ecb_noinline
4672static void
3669infy_del (EV_P_ ev_stat *w) 4673infy_del (EV_P_ ev_stat *w)
3670{ 4674{
3671 int slot; 4675 int slot;
3672 int wd = w->wd; 4676 int wd = w->wd;
3673 4677
… …
3680 4684
3681 /* remove this watcher, if others are watching it, they will rearm */ 4685 /* remove this watcher, if others are watching it, they will rearm */
3682 inotify_rm_watch (fs_fd, wd); 4686 inotify_rm_watch (fs_fd, wd);
3683} 4687}
3684 4688
3685static void noinline 4689ecb_noinline
4690static void
3686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4691infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3687{ 4692{
3688 if (slot < 0) 4693 if (slot < 0)
3689 /* overflow, need to check for all hash slots */ 4694 /* overflow, need to check for all hash slots */
3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4695 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3726 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4731 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3727 ofs += sizeof (struct inotify_event) + ev->len; 4732 ofs += sizeof (struct inotify_event) + ev->len;
3728 } 4733 }
3729} 4734}
3730 4735
3731inline_size void ecb_cold 4736inline_size ecb_cold
4737void
3732ev_check_2625 (EV_P) 4738ev_check_2625 (EV_P)
3733{ 4739{
3734 /* kernels < 2.6.25 are borked 4740 /* kernels < 2.6.25 are borked
3735 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4741 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3736 */ 4742 */
… …
3741} 4747}
3742 4748
3743inline_size int 4749inline_size int
3744infy_newfd (void) 4750infy_newfd (void)
3745{ 4751{
3746#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4752#if defined IN_CLOEXEC && defined IN_NONBLOCK
3747 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4753 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3748 if (fd >= 0) 4754 if (fd >= 0)
3749 return fd; 4755 return fd;
3750#endif 4756#endif
3751 return inotify_init (); 4757 return inotify_init ();
… …
3826#else 4832#else
3827# define EV_LSTAT(p,b) lstat (p, b) 4833# define EV_LSTAT(p,b) lstat (p, b)
3828#endif 4834#endif
3829 4835
3830void 4836void
3831ev_stat_stat (EV_P_ ev_stat *w) 4837ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3832{ 4838{
3833 if (lstat (w->path, &w->attr) < 0) 4839 if (lstat (w->path, &w->attr) < 0)
3834 w->attr.st_nlink = 0; 4840 w->attr.st_nlink = 0;
3835 else if (!w->attr.st_nlink) 4841 else if (!w->attr.st_nlink)
3836 w->attr.st_nlink = 1; 4842 w->attr.st_nlink = 1;
3837} 4843}
3838 4844
3839static void noinline 4845ecb_noinline
4846static void
3840stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4847stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3841{ 4848{
3842 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4849 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3843 4850
3844 ev_statdata prev = w->attr; 4851 ev_statdata prev = w->attr;
… …
3875 ev_feed_event (EV_A_ w, EV_STAT); 4882 ev_feed_event (EV_A_ w, EV_STAT);
3876 } 4883 }
3877} 4884}
3878 4885
3879void 4886void
3880ev_stat_start (EV_P_ ev_stat *w) 4887ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3881{ 4888{
3882 if (expect_false (ev_is_active (w))) 4889 if (ecb_expect_false (ev_is_active (w)))
3883 return; 4890 return;
3884 4891
3885 ev_stat_stat (EV_A_ w); 4892 ev_stat_stat (EV_A_ w);
3886 4893
3887 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4894 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3906 4913
3907 EV_FREQUENT_CHECK; 4914 EV_FREQUENT_CHECK;
3908} 4915}
3909 4916
3910void 4917void
3911ev_stat_stop (EV_P_ ev_stat *w) 4918ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3912{ 4919{
3913 clear_pending (EV_A_ (W)w); 4920 clear_pending (EV_A_ (W)w);
3914 if (expect_false (!ev_is_active (w))) 4921 if (ecb_expect_false (!ev_is_active (w)))
3915 return; 4922 return;
3916 4923
3917 EV_FREQUENT_CHECK; 4924 EV_FREQUENT_CHECK;
3918 4925
3919#if EV_USE_INOTIFY 4926#if EV_USE_INOTIFY
… …
3932} 4939}
3933#endif 4940#endif
3934 4941
3935#if EV_IDLE_ENABLE 4942#if EV_IDLE_ENABLE
3936void 4943void
3937ev_idle_start (EV_P_ ev_idle *w) 4944ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3938{ 4945{
3939 if (expect_false (ev_is_active (w))) 4946 if (ecb_expect_false (ev_is_active (w)))
3940 return; 4947 return;
3941 4948
3942 pri_adjust (EV_A_ (W)w); 4949 pri_adjust (EV_A_ (W)w);
3943 4950
3944 EV_FREQUENT_CHECK; 4951 EV_FREQUENT_CHECK;
… …
3947 int active = ++idlecnt [ABSPRI (w)]; 4954 int active = ++idlecnt [ABSPRI (w)];
3948 4955
3949 ++idleall; 4956 ++idleall;
3950 ev_start (EV_A_ (W)w, active); 4957 ev_start (EV_A_ (W)w, active);
3951 4958
3952 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4959 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3953 idles [ABSPRI (w)][active - 1] = w; 4960 idles [ABSPRI (w)][active - 1] = w;
3954 } 4961 }
3955 4962
3956 EV_FREQUENT_CHECK; 4963 EV_FREQUENT_CHECK;
3957} 4964}
3958 4965
3959void 4966void
3960ev_idle_stop (EV_P_ ev_idle *w) 4967ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3961{ 4968{
3962 clear_pending (EV_A_ (W)w); 4969 clear_pending (EV_A_ (W)w);
3963 if (expect_false (!ev_is_active (w))) 4970 if (ecb_expect_false (!ev_is_active (w)))
3964 return; 4971 return;
3965 4972
3966 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
3967 4974
3968 { 4975 {
… …
3979} 4986}
3980#endif 4987#endif
3981 4988
3982#if EV_PREPARE_ENABLE 4989#if EV_PREPARE_ENABLE
3983void 4990void
3984ev_prepare_start (EV_P_ ev_prepare *w) 4991ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3985{ 4992{
3986 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
3987 return; 4994 return;
3988 4995
3989 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3990 4997
3991 ev_start (EV_A_ (W)w, ++preparecnt); 4998 ev_start (EV_A_ (W)w, ++preparecnt);
3992 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4999 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3993 prepares [preparecnt - 1] = w; 5000 prepares [preparecnt - 1] = w;
3994 5001
3995 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
3996} 5003}
3997 5004
3998void 5005void
3999ev_prepare_stop (EV_P_ ev_prepare *w) 5006ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4000{ 5007{
4001 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
4002 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
4003 return; 5010 return;
4004 5011
4005 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
4006 5013
4007 { 5014 {
… …
4017} 5024}
4018#endif 5025#endif
4019 5026
4020#if EV_CHECK_ENABLE 5027#if EV_CHECK_ENABLE
4021void 5028void
4022ev_check_start (EV_P_ ev_check *w) 5029ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4023{ 5030{
4024 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
4025 return; 5032 return;
4026 5033
4027 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4028 5035
4029 ev_start (EV_A_ (W)w, ++checkcnt); 5036 ev_start (EV_A_ (W)w, ++checkcnt);
4030 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5037 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4031 checks [checkcnt - 1] = w; 5038 checks [checkcnt - 1] = w;
4032 5039
4033 EV_FREQUENT_CHECK; 5040 EV_FREQUENT_CHECK;
4034} 5041}
4035 5042
4036void 5043void
4037ev_check_stop (EV_P_ ev_check *w) 5044ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4038{ 5045{
4039 clear_pending (EV_A_ (W)w); 5046 clear_pending (EV_A_ (W)w);
4040 if (expect_false (!ev_is_active (w))) 5047 if (ecb_expect_false (!ev_is_active (w)))
4041 return; 5048 return;
4042 5049
4043 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4044 5051
4045 { 5052 {
… …
4054 EV_FREQUENT_CHECK; 5061 EV_FREQUENT_CHECK;
4055} 5062}
4056#endif 5063#endif
4057 5064
4058#if EV_EMBED_ENABLE 5065#if EV_EMBED_ENABLE
4059void noinline 5066ecb_noinline
5067void
4060ev_embed_sweep (EV_P_ ev_embed *w) 5068ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4061{ 5069{
4062 ev_run (w->other, EVRUN_NOWAIT); 5070 ev_run (w->other, EVRUN_NOWAIT);
4063} 5071}
4064 5072
4065static void 5073static void
… …
4087 ev_run (EV_A_ EVRUN_NOWAIT); 5095 ev_run (EV_A_ EVRUN_NOWAIT);
4088 } 5096 }
4089 } 5097 }
4090} 5098}
4091 5099
5100#if EV_FORK_ENABLE
4092static void 5101static void
4093embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5102embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4094{ 5103{
4095 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5104 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4096 5105
… …
4103 ev_run (EV_A_ EVRUN_NOWAIT); 5112 ev_run (EV_A_ EVRUN_NOWAIT);
4104 } 5113 }
4105 5114
4106 ev_embed_start (EV_A_ w); 5115 ev_embed_start (EV_A_ w);
4107} 5116}
5117#endif
4108 5118
4109#if 0 5119#if 0
4110static void 5120static void
4111embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5121embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4112{ 5122{
4113 ev_idle_stop (EV_A_ idle); 5123 ev_idle_stop (EV_A_ idle);
4114} 5124}
4115#endif 5125#endif
4116 5126
4117void 5127void
4118ev_embed_start (EV_P_ ev_embed *w) 5128ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4119{ 5129{
4120 if (expect_false (ev_is_active (w))) 5130 if (ecb_expect_false (ev_is_active (w)))
4121 return; 5131 return;
4122 5132
4123 { 5133 {
4124 EV_P = w->other; 5134 EV_P = w->other;
4125 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5135 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4133 5143
4134 ev_prepare_init (&w->prepare, embed_prepare_cb); 5144 ev_prepare_init (&w->prepare, embed_prepare_cb);
4135 ev_set_priority (&w->prepare, EV_MINPRI); 5145 ev_set_priority (&w->prepare, EV_MINPRI);
4136 ev_prepare_start (EV_A_ &w->prepare); 5146 ev_prepare_start (EV_A_ &w->prepare);
4137 5147
5148#if EV_FORK_ENABLE
4138 ev_fork_init (&w->fork, embed_fork_cb); 5149 ev_fork_init (&w->fork, embed_fork_cb);
4139 ev_fork_start (EV_A_ &w->fork); 5150 ev_fork_start (EV_A_ &w->fork);
5151#endif
4140 5152
4141 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5153 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4142 5154
4143 ev_start (EV_A_ (W)w, 1); 5155 ev_start (EV_A_ (W)w, 1);
4144 5156
4145 EV_FREQUENT_CHECK; 5157 EV_FREQUENT_CHECK;
4146} 5158}
4147 5159
4148void 5160void
4149ev_embed_stop (EV_P_ ev_embed *w) 5161ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4150{ 5162{
4151 clear_pending (EV_A_ (W)w); 5163 clear_pending (EV_A_ (W)w);
4152 if (expect_false (!ev_is_active (w))) 5164 if (ecb_expect_false (!ev_is_active (w)))
4153 return; 5165 return;
4154 5166
4155 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
4156 5168
4157 ev_io_stop (EV_A_ &w->io); 5169 ev_io_stop (EV_A_ &w->io);
4158 ev_prepare_stop (EV_A_ &w->prepare); 5170 ev_prepare_stop (EV_A_ &w->prepare);
5171#if EV_FORK_ENABLE
4159 ev_fork_stop (EV_A_ &w->fork); 5172 ev_fork_stop (EV_A_ &w->fork);
5173#endif
4160 5174
4161 ev_stop (EV_A_ (W)w); 5175 ev_stop (EV_A_ (W)w);
4162 5176
4163 EV_FREQUENT_CHECK; 5177 EV_FREQUENT_CHECK;
4164} 5178}
4165#endif 5179#endif
4166 5180
4167#if EV_FORK_ENABLE 5181#if EV_FORK_ENABLE
4168void 5182void
4169ev_fork_start (EV_P_ ev_fork *w) 5183ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4170{ 5184{
4171 if (expect_false (ev_is_active (w))) 5185 if (ecb_expect_false (ev_is_active (w)))
4172 return; 5186 return;
4173 5187
4174 EV_FREQUENT_CHECK; 5188 EV_FREQUENT_CHECK;
4175 5189
4176 ev_start (EV_A_ (W)w, ++forkcnt); 5190 ev_start (EV_A_ (W)w, ++forkcnt);
4177 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5191 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4178 forks [forkcnt - 1] = w; 5192 forks [forkcnt - 1] = w;
4179 5193
4180 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4181} 5195}
4182 5196
4183void 5197void
4184ev_fork_stop (EV_P_ ev_fork *w) 5198ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4185{ 5199{
4186 clear_pending (EV_A_ (W)w); 5200 clear_pending (EV_A_ (W)w);
4187 if (expect_false (!ev_is_active (w))) 5201 if (ecb_expect_false (!ev_is_active (w)))
4188 return; 5202 return;
4189 5203
4190 EV_FREQUENT_CHECK; 5204 EV_FREQUENT_CHECK;
4191 5205
4192 { 5206 {
… …
4202} 5216}
4203#endif 5217#endif
4204 5218
4205#if EV_CLEANUP_ENABLE 5219#if EV_CLEANUP_ENABLE
4206void 5220void
4207ev_cleanup_start (EV_P_ ev_cleanup *w) 5221ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4208{ 5222{
4209 if (expect_false (ev_is_active (w))) 5223 if (ecb_expect_false (ev_is_active (w)))
4210 return; 5224 return;
4211 5225
4212 EV_FREQUENT_CHECK; 5226 EV_FREQUENT_CHECK;
4213 5227
4214 ev_start (EV_A_ (W)w, ++cleanupcnt); 5228 ev_start (EV_A_ (W)w, ++cleanupcnt);
4215 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5229 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4216 cleanups [cleanupcnt - 1] = w; 5230 cleanups [cleanupcnt - 1] = w;
4217 5231
4218 /* cleanup watchers should never keep a refcount on the loop */ 5232 /* cleanup watchers should never keep a refcount on the loop */
4219 ev_unref (EV_A); 5233 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK; 5234 EV_FREQUENT_CHECK;
4221} 5235}
4222 5236
4223void 5237void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w) 5238ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4225{ 5239{
4226 clear_pending (EV_A_ (W)w); 5240 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w))) 5241 if (ecb_expect_false (!ev_is_active (w)))
4228 return; 5242 return;
4229 5243
4230 EV_FREQUENT_CHECK; 5244 EV_FREQUENT_CHECK;
4231 ev_ref (EV_A); 5245 ev_ref (EV_A);
4232 5246
… …
4243} 5257}
4244#endif 5258#endif
4245 5259
4246#if EV_ASYNC_ENABLE 5260#if EV_ASYNC_ENABLE
4247void 5261void
4248ev_async_start (EV_P_ ev_async *w) 5262ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4249{ 5263{
4250 if (expect_false (ev_is_active (w))) 5264 if (ecb_expect_false (ev_is_active (w)))
4251 return; 5265 return;
4252 5266
4253 w->sent = 0; 5267 w->sent = 0;
4254 5268
4255 evpipe_init (EV_A); 5269 evpipe_init (EV_A);
4256 5270
4257 EV_FREQUENT_CHECK; 5271 EV_FREQUENT_CHECK;
4258 5272
4259 ev_start (EV_A_ (W)w, ++asynccnt); 5273 ev_start (EV_A_ (W)w, ++asynccnt);
4260 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5274 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4261 asyncs [asynccnt - 1] = w; 5275 asyncs [asynccnt - 1] = w;
4262 5276
4263 EV_FREQUENT_CHECK; 5277 EV_FREQUENT_CHECK;
4264} 5278}
4265 5279
4266void 5280void
4267ev_async_stop (EV_P_ ev_async *w) 5281ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4268{ 5282{
4269 clear_pending (EV_A_ (W)w); 5283 clear_pending (EV_A_ (W)w);
4270 if (expect_false (!ev_is_active (w))) 5284 if (ecb_expect_false (!ev_is_active (w)))
4271 return; 5285 return;
4272 5286
4273 EV_FREQUENT_CHECK; 5287 EV_FREQUENT_CHECK;
4274 5288
4275 { 5289 {
… …
4283 5297
4284 EV_FREQUENT_CHECK; 5298 EV_FREQUENT_CHECK;
4285} 5299}
4286 5300
4287void 5301void
4288ev_async_send (EV_P_ ev_async *w) 5302ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4289{ 5303{
4290 w->sent = 1; 5304 w->sent = 1;
4291 evpipe_write (EV_A_ &async_pending); 5305 evpipe_write (EV_A_ &async_pending);
4292} 5306}
4293#endif 5307#endif
… …
4330 5344
4331 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5345 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4332} 5346}
4333 5347
4334void 5348void
4335ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5349ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4336{ 5350{
4337 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5351 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4338
4339 if (expect_false (!once))
4340 {
4341 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4342 return;
4343 }
4344 5352
4345 once->cb = cb; 5353 once->cb = cb;
4346 once->arg = arg; 5354 once->arg = arg;
4347 5355
4348 ev_init (&once->io, once_cb_io); 5356 ev_init (&once->io, once_cb_io);
… …
4361} 5369}
4362 5370
4363/*****************************************************************************/ 5371/*****************************************************************************/
4364 5372
4365#if EV_WALK_ENABLE 5373#if EV_WALK_ENABLE
4366void ecb_cold 5374ecb_cold
5375void
4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5376ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4368{ 5377{
4369 int i, j; 5378 int i, j;
4370 ev_watcher_list *wl, *wn; 5379 ev_watcher_list *wl, *wn;
4371 5380
4372 if (types & (EV_IO | EV_EMBED)) 5381 if (types & (EV_IO | EV_EMBED))

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