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Comparing libev/ev.c (file contents):
Revision 1.432 by root, Mon May 14 19:09:58 2012 UTC vs.
Revision 1.512 by root, Fri Nov 22 19:54:38 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
165#endif 183#endif
184
185/* OS X, in its infinite idiocy, actually HARDCODES
186 * a limit of 1024 into their select. Where people have brains,
187 * OS X engineers apparently have a vacuum. Or maybe they were
188 * ordered to have a vacuum, or they do anything for money.
189 * This might help. Or not.
190 * Note that this must be defined early, as other include files
191 * will rely on this define as well.
192 */
193#define _DARWIN_UNLIMITED_SELECT 1
166 194
167#include <stdlib.h> 195#include <stdlib.h>
168#include <string.h> 196#include <string.h>
169#include <fcntl.h> 197#include <fcntl.h>
170#include <stddef.h> 198#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 236# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 237# define EV_SELECT_IS_WINSOCKET 1
210# endif 238# endif
211# undef EV_AVOID_STDIO 239# undef EV_AVOID_STDIO
212#endif 240#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 241
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 242/* this block tries to deduce configuration from header-defined symbols and defaults */
223 243
224/* try to deduce the maximum number of signals on this platform */ 244/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 245#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 261#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 263#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 265#else
246# error "unable to find value for NSIG, please report" 266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 267#endif
251 268
252#ifndef EV_USE_FLOOR 269#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 270# define EV_USE_FLOOR 0
254#endif 271#endif
255 272
256#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 276# else
260# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
278# endif
279#endif
280
281#if !(_POSIX_TIMERS > 0)
282# ifndef EV_USE_MONOTONIC
283# define EV_USE_MONOTONIC 0
284# endif
285# ifndef EV_USE_REALTIME
286# define EV_USE_REALTIME 0
261# endif 287# endif
262#endif 288#endif
263 289
264#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
307 333
308#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
309# define EV_USE_PORT 0 335# define EV_USE_PORT 0
310#endif 336#endif
311 337
338#ifndef EV_USE_LINUXAIO
339# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
340# define EV_USE_LINUXAIO 1
341# else
342# define EV_USE_LINUXAIO 0
343# endif
344#endif
345
346#ifndef EV_USE_IOURING
347# if __linux /* later checks might disable again */
348# define EV_USE_IOURING 1
349# else
350# define EV_USE_IOURING 0
351# endif
352#endif
353
312#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 356# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 357# else
316# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 397# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 398#endif
357 399
358#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 401# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
402#endif
403
404#ifdef __ANDROID__
405/* supposedly, android doesn't typedef fd_mask */
406# undef EV_USE_SELECT
407# define EV_USE_SELECT 0
408/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
409# undef EV_USE_CLOCK_SYSCALL
410# define EV_USE_CLOCK_SYSCALL 0
411#endif
412
413/* aix's poll.h seems to cause lots of trouble */
414#ifdef _AIX
415/* AIX has a completely broken poll.h header */
416# undef EV_USE_POLL
417# define EV_USE_POLL 0
360#endif 418#endif
361 419
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 420/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */ 421/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h> 423# include <sys/syscall.h>
366# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
370# else 429# else
371# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
373# endif 432# endif
374#endif 433#endif
375 434
376/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 435/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377 436
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
384#ifndef CLOCK_MONOTONIC 437#ifndef CLOCK_MONOTONIC
385# undef EV_USE_MONOTONIC 438# undef EV_USE_MONOTONIC
386# define EV_USE_MONOTONIC 0 439# define EV_USE_MONOTONIC 0
387#endif 440#endif
388 441
… …
392#endif 445#endif
393 446
394#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
395# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
396# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
450#endif
451
452#if __linux && EV_USE_IOURING
453# include <linux/version.h>
454# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
455# undef EV_USE_IOURING
456# define EV_USE_IOURING 0
457# endif
397#endif 458#endif
398 459
399#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
400/* hp-ux has it in sys/time.h, which we unconditionally include above */ 461/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux 462# if !defined _WIN32 && !defined __hpux
402# include <sys/select.h> 463# include <sys/select.h>
464# endif
465#endif
466
467#if EV_USE_LINUXAIO
468# include <sys/syscall.h>
469# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
470# define EV_NEED_SYSCALL 1
471# else
472# undef EV_USE_LINUXAIO
473# define EV_USE_LINUXAIO 0
474# endif
475#endif
476
477#if EV_USE_IOURING
478# include <sys/syscall.h>
479# if !SYS_io_uring_setup && __linux && !__alpha
480# define SYS_io_uring_setup 425
481# define SYS_io_uring_enter 426
482# define SYS_io_uring_wregister 427
483# endif
484# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
485# define EV_NEED_SYSCALL 1
486# else
487# undef EV_USE_IOURING
488# define EV_USE_IOURING 0
403# endif 489# endif
404#endif 490#endif
405 491
406#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
407# include <sys/statfs.h> 493# include <sys/statfs.h>
… …
449 uint32_t ssi_signo; 535 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)]; 536 char pad[128 - sizeof (uint32_t)];
451}; 537};
452#endif 538#endif
453 539
454/**/ 540/*****************************************************************************/
455 541
456#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 544#else
459# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
… …
464 * This value is good at least till the year 4000. 550 * This value is good at least till the year 4000.
465 */ 551 */
466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 552#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 553/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
468 554
469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 555#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 556#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
471 557
558/* find a portable timestamp that is "always" in the future but fits into time_t.
559 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
560 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
561#define EV_TSTAMP_HUGE \
562 (sizeof (time_t) >= 8 ? 10000000000000. \
563 : 0 < (time_t)4294967295 ? 4294967295. \
564 : 2147483647.) \
565
566#ifndef EV_TS_CONST
567# define EV_TS_CONST(nv) nv
568# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
569# define EV_TS_FROM_USEC(us) us * 1e-6
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 570# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 571# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
572# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
573# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
574#endif
474 575
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 576/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */ 577/* ECB.H BEGIN */
477/* 578/*
478 * libecb - http://software.schmorp.de/pkg/libecb 579 * libecb - http://software.schmorp.de/pkg/libecb
479 * 580 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 581 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta 582 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved. 583 * All rights reserved.
483 * 584 *
484 * Redistribution and use in source and binary forms, with or without modifica- 585 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met: 586 * tion, are permitted provided that the following conditions are met:
… …
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 600 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 601 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 602 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 603 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE. 604 * OF THE POSSIBILITY OF SUCH DAMAGE.
605 *
606 * Alternatively, the contents of this file may be used under the terms of
607 * the GNU General Public License ("GPL") version 2 or any later version,
608 * in which case the provisions of the GPL are applicable instead of
609 * the above. If you wish to allow the use of your version of this file
610 * only under the terms of the GPL and not to allow others to use your
611 * version of this file under the BSD license, indicate your decision
612 * by deleting the provisions above and replace them with the notice
613 * and other provisions required by the GPL. If you do not delete the
614 * provisions above, a recipient may use your version of this file under
615 * either the BSD or the GPL.
504 */ 616 */
505 617
506#ifndef ECB_H 618#ifndef ECB_H
507#define ECB_H 619#define ECB_H
620
621/* 16 bits major, 16 bits minor */
622#define ECB_VERSION 0x00010006
508 623
509#ifdef _WIN32 624#ifdef _WIN32
510 typedef signed char int8_t; 625 typedef signed char int8_t;
511 typedef unsigned char uint8_t; 626 typedef unsigned char uint8_t;
512 typedef signed short int16_t; 627 typedef signed short int16_t;
… …
518 typedef unsigned long long uint64_t; 633 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */ 634 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t; 635 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t; 636 typedef unsigned __int64 uint64_t;
522 #endif 637 #endif
638 #ifdef _WIN64
639 #define ECB_PTRSIZE 8
640 typedef uint64_t uintptr_t;
641 typedef int64_t intptr_t;
642 #else
643 #define ECB_PTRSIZE 4
644 typedef uint32_t uintptr_t;
645 typedef int32_t intptr_t;
646 #endif
523#else 647#else
524 #include <inttypes.h> 648 #include <inttypes.h>
649 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
650 #define ECB_PTRSIZE 8
651 #else
652 #define ECB_PTRSIZE 4
653 #endif
654#endif
655
656#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
657#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
658
659/* work around x32 idiocy by defining proper macros */
660#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
661 #if _ILP32
662 #define ECB_AMD64_X32 1
663 #else
664 #define ECB_AMD64 1
665 #endif
525#endif 666#endif
526 667
527/* many compilers define _GNUC_ to some versions but then only implement 668/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions, 669 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers. 670 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so. 671 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have 672 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place. 673 * an issue with that they should have done it right in the first place.
533 */ 674 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 675#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0 676 #define ECB_GCC_VERSION(major,minor) 0
537 #else 677#else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 678 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
539 #endif 679#endif
680
681#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
682
683#if __clang__ && defined __has_builtin
684 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
685#else
686 #define ECB_CLANG_BUILTIN(x) 0
687#endif
688
689#if __clang__ && defined __has_extension
690 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
691#else
692 #define ECB_CLANG_EXTENSION(x) 0
693#endif
694
695#define ECB_CPP (__cplusplus+0)
696#define ECB_CPP11 (__cplusplus >= 201103L)
697#define ECB_CPP14 (__cplusplus >= 201402L)
698#define ECB_CPP17 (__cplusplus >= 201703L)
699
700#if ECB_CPP
701 #define ECB_C 0
702 #define ECB_STDC_VERSION 0
703#else
704 #define ECB_C 1
705 #define ECB_STDC_VERSION __STDC_VERSION__
706#endif
707
708#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
709#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
710#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
711
712#if ECB_CPP
713 #define ECB_EXTERN_C extern "C"
714 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
715 #define ECB_EXTERN_C_END }
716#else
717 #define ECB_EXTERN_C extern
718 #define ECB_EXTERN_C_BEG
719 #define ECB_EXTERN_C_END
540#endif 720#endif
541 721
542/*****************************************************************************/ 722/*****************************************************************************/
543 723
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 724/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 725/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546 726
547#if ECB_NO_THREADS 727#if ECB_NO_THREADS
548# define ECB_NO_SMP 1 728 #define ECB_NO_SMP 1
549#endif 729#endif
550 730
551#if ECB_NO_THREADS || ECB_NO_SMP 731#if ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0) 732 #define ECB_MEMORY_FENCE do { } while (0)
733#endif
734
735/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
736#if __xlC__ && ECB_CPP
737 #include <builtins.h>
738#endif
739
740#if 1400 <= _MSC_VER
741 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
553#endif 742#endif
554 743
555#ifndef ECB_MEMORY_FENCE 744#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 745 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
746 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
557 #if __i386 || __i386__ 747 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 749 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 750 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 751 #elif ECB_GCC_AMD64
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 755 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
757 #elif defined __ARM_ARCH_2__ \
758 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
759 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
760 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
761 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
762 || defined __ARM_ARCH_5TEJ__
763 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 764 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 765 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
766 || defined __ARM_ARCH_6T2__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 768 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 769 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 770 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__ 771 #elif __aarch64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
773 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 775 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 776 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__ 777 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__ 779 #elif defined __mips__
780 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
781 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 782 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
581 #elif defined __alpha__ 783 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 784 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
785 #elif defined __hppa__
786 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
787 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
788 #elif defined __ia64__
789 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
790 #elif defined __m68k__
791 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
792 #elif defined __m88k__
793 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
794 #elif defined __sh__
795 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
583 #endif 796 #endif
584 #endif 797 #endif
585#endif 798#endif
586 799
587#ifndef ECB_MEMORY_FENCE 800#ifndef ECB_MEMORY_FENCE
801 #if ECB_GCC_VERSION(4,7)
802 /* see comment below (stdatomic.h) about the C11 memory model. */
803 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
804 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
805 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
806 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
807
808 #elif ECB_CLANG_EXTENSION(c_atomic)
809 /* see comment below (stdatomic.h) about the C11 memory model. */
810 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
811 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
812 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
813 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
814
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 815 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize () 816 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 817 #elif _MSC_VER >= 1500 /* VC++ 2008 */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 818 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
819 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
820 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
821 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
822 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 823 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 824 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 825 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 826 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 827 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32 828 #elif defined _WIN32
598 #include <WinNT.h> 829 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 830 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 831 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h> 832 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier () 833 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 834 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 835 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
836 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
605 #elif __xlC__ 837 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync () 838 #define ECB_MEMORY_FENCE __sync ()
839 #endif
840#endif
841
842#ifndef ECB_MEMORY_FENCE
843 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
844 /* we assume that these memory fences work on all variables/all memory accesses, */
845 /* not just C11 atomics and atomic accesses */
846 #include <stdatomic.h>
847 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
848 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
849 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
607 #endif 850 #endif
608#endif 851#endif
609 852
610#ifndef ECB_MEMORY_FENCE 853#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS 854 #if !ECB_AVOID_PTHREADS
… …
631 874
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 875#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 876 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif 877#endif
635 878
879#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
880 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
881#endif
882
636/*****************************************************************************/ 883/*****************************************************************************/
637 884
638#define ECB_C99 (__STDC_VERSION__ >= 199901L) 885#if ECB_CPP
639
640#if __cplusplus
641 #define ecb_inline static inline 886 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5) 887#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__ 888 #define ecb_inline static __inline__
644#elif ECB_C99 889#elif ECB_C99
645 #define ecb_inline static inline 890 #define ecb_inline static inline
… …
659 904
660#define ECB_CONCAT_(a, b) a ## b 905#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 906#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a 907#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 908#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
909#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
664 910
665#define ecb_function_ ecb_inline 911#define ecb_function_ ecb_inline
666 912
667#if ECB_GCC_VERSION(3,1) 913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
668 #define ecb_attribute(attrlist) __attribute__(attrlist) 914 #define ecb_attribute(attrlist) __attribute__ (attrlist)
915#else
916 #define ecb_attribute(attrlist)
917#endif
918
919#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr) 920 #define ecb_is_constant(expr) __builtin_constant_p (expr)
921#else
922 /* possible C11 impl for integral types
923 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
924 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
925
926 #define ecb_is_constant(expr) 0
927#endif
928
929#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 930 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
931#else
932 #define ecb_expect(expr,value) (expr)
933#endif
934
935#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 936 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else 937#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality) 938 #define ecb_prefetch(addr,rw,locality)
677#endif 939#endif
678 940
679/* no emulation for ecb_decltype */ 941/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5) 942#if ECB_CPP11
943 // older implementations might have problems with decltype(x)::type, work around it
944 template<class T> struct ecb_decltype_t { typedef T type; };
681 #define ecb_decltype(x) __decltype(x) 945 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
682#elif ECB_GCC_VERSION(3,0) 946#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
683 #define ecb_decltype(x) __typeof(x) 947 #define ecb_decltype(x) __typeof__ (x)
684#endif 948#endif
685 949
950#if _MSC_VER >= 1300
951 #define ecb_deprecated __declspec (deprecated)
952#else
953 #define ecb_deprecated ecb_attribute ((__deprecated__))
954#endif
955
956#if _MSC_VER >= 1500
957 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
958#elif ECB_GCC_VERSION(4,5)
959 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
960#else
961 #define ecb_deprecated_message(msg) ecb_deprecated
962#endif
963
964#if _MSC_VER >= 1400
965 #define ecb_noinline __declspec (noinline)
966#else
686#define ecb_noinline ecb_attribute ((__noinline__)) 967 #define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__)) 968#endif
969
688#define ecb_unused ecb_attribute ((__unused__)) 970#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__)) 971#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__)) 972#define ecb_pure ecb_attribute ((__pure__))
973
974#if ECB_C11 || __IBMC_NORETURN
975 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
976 #define ecb_noreturn _Noreturn
977#elif ECB_CPP11
978 #define ecb_noreturn [[noreturn]]
979#elif _MSC_VER >= 1200
980 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
981 #define ecb_noreturn __declspec (noreturn)
982#else
983 #define ecb_noreturn ecb_attribute ((__noreturn__))
984#endif
691 985
692#if ECB_GCC_VERSION(4,3) 986#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__)) 987 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__)) 988 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__)) 989 #define ecb_cold ecb_attribute ((__cold__))
… …
707/* for compatibility to the rest of the world */ 1001/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr) 1002#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr) 1003#define ecb_unlikely(expr) ecb_expect_false (expr)
710 1004
711/* count trailing zero bits and count # of one bits */ 1005/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4) 1006#if ECB_GCC_VERSION(3,4) \
1007 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1008 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1009 && ECB_CLANG_BUILTIN(__builtin_popcount))
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1010 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1011 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1012 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x) 1013 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x) 1014 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x) 1015 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */ 1016 /* no popcountll */
720#else 1017#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1018 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
722 ecb_function_ int 1019 ecb_function_ ecb_const int
723 ecb_ctz32 (uint32_t x) 1020 ecb_ctz32 (uint32_t x)
724 { 1021 {
1022#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1023 unsigned long r;
1024 _BitScanForward (&r, x);
1025 return (int)r;
1026#else
725 int r = 0; 1027 int r = 0;
726 1028
727 x &= ~x + 1; /* this isolates the lowest bit */ 1029 x &= ~x + 1; /* this isolates the lowest bit */
728 1030
729#if ECB_branchless_on_i386 1031#if ECB_branchless_on_i386
… …
739 if (x & 0xff00ff00) r += 8; 1041 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16; 1042 if (x & 0xffff0000) r += 16;
741#endif 1043#endif
742 1044
743 return r; 1045 return r;
1046#endif
744 } 1047 }
745 1048
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1049 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
747 ecb_function_ int 1050 ecb_function_ ecb_const int
748 ecb_ctz64 (uint64_t x) 1051 ecb_ctz64 (uint64_t x)
749 { 1052 {
1053#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1054 unsigned long r;
1055 _BitScanForward64 (&r, x);
1056 return (int)r;
1057#else
750 int shift = x & 0xffffffffU ? 0 : 32; 1058 int shift = x & 0xffffffff ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift; 1059 return ecb_ctz32 (x >> shift) + shift;
1060#endif
752 } 1061 }
753 1062
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1063 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
755 ecb_function_ int 1064 ecb_function_ ecb_const int
756 ecb_popcount32 (uint32_t x) 1065 ecb_popcount32 (uint32_t x)
757 { 1066 {
758 x -= (x >> 1) & 0x55555555; 1067 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1068 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f; 1069 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101; 1070 x *= 0x01010101;
762 1071
763 return x >> 24; 1072 return x >> 24;
764 } 1073 }
765 1074
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1075 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
767 ecb_function_ int ecb_ld32 (uint32_t x) 1076 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
768 { 1077 {
1078#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse (&r, x);
1081 return (int)r;
1082#else
769 int r = 0; 1083 int r = 0;
770 1084
771 if (x >> 16) { x >>= 16; r += 16; } 1085 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; } 1086 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; } 1087 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; } 1088 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; } 1089 if (x >> 1) { r += 1; }
776 1090
777 return r; 1091 return r;
1092#endif
778 } 1093 }
779 1094
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
781 ecb_function_ int ecb_ld64 (uint64_t x) 1096 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
782 { 1097 {
1098#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1099 unsigned long r;
1100 _BitScanReverse64 (&r, x);
1101 return (int)r;
1102#else
783 int r = 0; 1103 int r = 0;
784 1104
785 if (x >> 32) { x >>= 32; r += 32; } 1105 if (x >> 32) { x >>= 32; r += 32; }
786 1106
787 return r + ecb_ld32 (x); 1107 return r + ecb_ld32 (x);
1108#endif
788 } 1109 }
789#endif 1110#endif
790 1111
1112ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1113ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1114ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1115ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1116
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1117ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1118ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
793{ 1119{
794 return ( (x * 0x0802U & 0x22110U) 1120 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1121 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796} 1122}
797 1123
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1124ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1125ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
800{ 1126{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1127 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1128 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1129 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8); 1130 x = ( x >> 8 ) | ( x << 8);
805 1131
806 return x; 1132 return x;
807} 1133}
808 1134
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1135ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1136ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
811{ 1137{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1138 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1139 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1140 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1141 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
818 return x; 1144 return x;
819} 1145}
820 1146
821/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1147/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */ 1148/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1149ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
824ecb_function_ int 1150ecb_function_ ecb_const int
825ecb_popcount64 (uint64_t x) 1151ecb_popcount64 (uint64_t x)
826{ 1152{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1153 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828} 1154}
829 1155
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1156ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1157ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1158ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1159ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1160ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1161ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1162ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1163ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
838 1164
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1165ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1166ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1167ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1168ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1169ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1170ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1171ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1172ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847 1173
848#if ECB_GCC_VERSION(4,3) 1174#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1175 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1176 #define ecb_bswap16(x) __builtin_bswap16 (x)
1177 #else
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1178 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1179 #endif
850 #define ecb_bswap32(x) __builtin_bswap32 (x) 1180 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x) 1181 #define ecb_bswap64(x) __builtin_bswap64 (x)
1182#elif _MSC_VER
1183 #include <stdlib.h>
1184 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1185 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1186 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
852#else 1187#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1188 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
854 ecb_function_ uint16_t 1189 ecb_function_ ecb_const uint16_t
855 ecb_bswap16 (uint16_t x) 1190 ecb_bswap16 (uint16_t x)
856 { 1191 {
857 return ecb_rotl16 (x, 8); 1192 return ecb_rotl16 (x, 8);
858 } 1193 }
859 1194
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1195 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
861 ecb_function_ uint32_t 1196 ecb_function_ ecb_const uint32_t
862 ecb_bswap32 (uint32_t x) 1197 ecb_bswap32 (uint32_t x)
863 { 1198 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1199 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 } 1200 }
866 1201
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1202 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
868 ecb_function_ uint64_t 1203 ecb_function_ ecb_const uint64_t
869 ecb_bswap64 (uint64_t x) 1204 ecb_bswap64 (uint64_t x)
870 { 1205 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1206 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 } 1207 }
873#endif 1208#endif
874 1209
875#if ECB_GCC_VERSION(4,5) 1210#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
876 #define ecb_unreachable() __builtin_unreachable () 1211 #define ecb_unreachable() __builtin_unreachable ()
877#else 1212#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1213 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1214 ecb_inline ecb_noreturn void ecb_unreachable (void);
880 ecb_inline void ecb_unreachable (void) { } 1215 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
881#endif 1216#endif
882 1217
883/* try to tell the compiler that some condition is definitely true */ 1218/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1219#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
885 1220
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1221ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
887ecb_inline unsigned char 1222ecb_inline ecb_const uint32_t
888ecb_byteorder_helper (void) 1223ecb_byteorder_helper (void)
889{ 1224{
890 const uint32_t u = 0x11223344; 1225 /* the union code still generates code under pressure in gcc, */
891 return *(unsigned char *)&u; 1226 /* but less than using pointers, and always seems to */
1227 /* successfully return a constant. */
1228 /* the reason why we have this horrible preprocessor mess */
1229 /* is to avoid it in all cases, at least on common architectures */
1230 /* or when using a recent enough gcc version (>= 4.6) */
1231#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1232 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1233 #define ECB_LITTLE_ENDIAN 1
1234 return 0x44332211;
1235#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1236 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1237 #define ECB_BIG_ENDIAN 1
1238 return 0x11223344;
1239#else
1240 union
1241 {
1242 uint8_t c[4];
1243 uint32_t u;
1244 } u = { 0x11, 0x22, 0x33, 0x44 };
1245 return u.u;
1246#endif
892} 1247}
893 1248
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1249ecb_inline ecb_const ecb_bool ecb_big_endian (void);
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1250ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1251ecb_inline ecb_const ecb_bool ecb_little_endian (void);
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1252ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
898 1253
899#if ECB_GCC_VERSION(3,0) || ECB_C99 1254#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1255 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else 1256#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1257 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif 1258#endif
904 1259
905#if __cplusplus 1260#if ECB_CPP
906 template<typename T> 1261 template<typename T>
907 static inline T ecb_div_rd (T val, T div) 1262 static inline T ecb_div_rd (T val, T div)
908 { 1263 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1264 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 } 1265 }
… …
927 } 1282 }
928#else 1283#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1284 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif 1285#endif
931 1286
1287ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1288ecb_function_ ecb_const uint32_t
1289ecb_binary16_to_binary32 (uint32_t x)
1290{
1291 unsigned int s = (x & 0x8000) << (31 - 15);
1292 int e = (x >> 10) & 0x001f;
1293 unsigned int m = x & 0x03ff;
1294
1295 if (ecb_expect_false (e == 31))
1296 /* infinity or NaN */
1297 e = 255 - (127 - 15);
1298 else if (ecb_expect_false (!e))
1299 {
1300 if (ecb_expect_true (!m))
1301 /* zero, handled by code below by forcing e to 0 */
1302 e = 0 - (127 - 15);
1303 else
1304 {
1305 /* subnormal, renormalise */
1306 unsigned int s = 10 - ecb_ld32 (m);
1307
1308 m = (m << s) & 0x3ff; /* mask implicit bit */
1309 e -= s - 1;
1310 }
1311 }
1312
1313 /* e and m now are normalised, or zero, (or inf or nan) */
1314 e += 127 - 15;
1315
1316 return s | (e << 23) | (m << (23 - 10));
1317}
1318
1319ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1320ecb_function_ ecb_const uint16_t
1321ecb_binary32_to_binary16 (uint32_t x)
1322{
1323 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1324 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1325 unsigned int m = x & 0x007fffff;
1326
1327 x &= 0x7fffffff;
1328
1329 /* if it's within range of binary16 normals, use fast path */
1330 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1331 {
1332 /* mantissa round-to-even */
1333 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1334
1335 /* handle overflow */
1336 if (ecb_expect_false (m >= 0x00800000))
1337 {
1338 m >>= 1;
1339 e += 1;
1340 }
1341
1342 return s | (e << 10) | (m >> (23 - 10));
1343 }
1344
1345 /* handle large numbers and infinity */
1346 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1347 return s | 0x7c00;
1348
1349 /* handle zero, subnormals and small numbers */
1350 if (ecb_expect_true (x < 0x38800000))
1351 {
1352 /* zero */
1353 if (ecb_expect_true (!x))
1354 return s;
1355
1356 /* handle subnormals */
1357
1358 /* too small, will be zero */
1359 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1360 return s;
1361
1362 m |= 0x00800000; /* make implicit bit explicit */
1363
1364 /* very tricky - we need to round to the nearest e (+10) bit value */
1365 {
1366 unsigned int bits = 14 - e;
1367 unsigned int half = (1 << (bits - 1)) - 1;
1368 unsigned int even = (m >> bits) & 1;
1369
1370 /* if this overflows, we will end up with a normalised number */
1371 m = (m + half + even) >> bits;
1372 }
1373
1374 return s | m;
1375 }
1376
1377 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1378 m >>= 13;
1379
1380 return s | 0x7c00 | m | !m;
1381}
1382
1383/*******************************************************************************/
1384/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1385
1386/* basically, everything uses "ieee pure-endian" floating point numbers */
1387/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1388#if 0 \
1389 || __i386 || __i386__ \
1390 || ECB_GCC_AMD64 \
1391 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1392 || defined __s390__ || defined __s390x__ \
1393 || defined __mips__ \
1394 || defined __alpha__ \
1395 || defined __hppa__ \
1396 || defined __ia64__ \
1397 || defined __m68k__ \
1398 || defined __m88k__ \
1399 || defined __sh__ \
1400 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1401 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1402 || defined __aarch64__
1403 #define ECB_STDFP 1
1404 #include <string.h> /* for memcpy */
1405#else
1406 #define ECB_STDFP 0
1407#endif
1408
1409#ifndef ECB_NO_LIBM
1410
1411 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1412
1413 /* only the oldest of old doesn't have this one. solaris. */
1414 #ifdef INFINITY
1415 #define ECB_INFINITY INFINITY
1416 #else
1417 #define ECB_INFINITY HUGE_VAL
1418 #endif
1419
1420 #ifdef NAN
1421 #define ECB_NAN NAN
1422 #else
1423 #define ECB_NAN ECB_INFINITY
1424 #endif
1425
1426 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1427 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1428 #define ecb_frexpf(x,e) frexpf ((x), (e))
1429 #else
1430 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1431 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1432 #endif
1433
1434 /* convert a float to ieee single/binary32 */
1435 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1436 ecb_function_ ecb_const uint32_t
1437 ecb_float_to_binary32 (float x)
1438 {
1439 uint32_t r;
1440
1441 #if ECB_STDFP
1442 memcpy (&r, &x, 4);
1443 #else
1444 /* slow emulation, works for anything but -0 */
1445 uint32_t m;
1446 int e;
1447
1448 if (x == 0e0f ) return 0x00000000U;
1449 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1450 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1451 if (x != x ) return 0x7fbfffffU;
1452
1453 m = ecb_frexpf (x, &e) * 0x1000000U;
1454
1455 r = m & 0x80000000U;
1456
1457 if (r)
1458 m = -m;
1459
1460 if (e <= -126)
1461 {
1462 m &= 0xffffffU;
1463 m >>= (-125 - e);
1464 e = -126;
1465 }
1466
1467 r |= (e + 126) << 23;
1468 r |= m & 0x7fffffU;
1469 #endif
1470
1471 return r;
1472 }
1473
1474 /* converts an ieee single/binary32 to a float */
1475 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1476 ecb_function_ ecb_const float
1477 ecb_binary32_to_float (uint32_t x)
1478 {
1479 float r;
1480
1481 #if ECB_STDFP
1482 memcpy (&r, &x, 4);
1483 #else
1484 /* emulation, only works for normals and subnormals and +0 */
1485 int neg = x >> 31;
1486 int e = (x >> 23) & 0xffU;
1487
1488 x &= 0x7fffffU;
1489
1490 if (e)
1491 x |= 0x800000U;
1492 else
1493 e = 1;
1494
1495 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1496 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1497
1498 r = neg ? -r : r;
1499 #endif
1500
1501 return r;
1502 }
1503
1504 /* convert a double to ieee double/binary64 */
1505 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1506 ecb_function_ ecb_const uint64_t
1507 ecb_double_to_binary64 (double x)
1508 {
1509 uint64_t r;
1510
1511 #if ECB_STDFP
1512 memcpy (&r, &x, 8);
1513 #else
1514 /* slow emulation, works for anything but -0 */
1515 uint64_t m;
1516 int e;
1517
1518 if (x == 0e0 ) return 0x0000000000000000U;
1519 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1520 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1521 if (x != x ) return 0X7ff7ffffffffffffU;
1522
1523 m = frexp (x, &e) * 0x20000000000000U;
1524
1525 r = m & 0x8000000000000000;;
1526
1527 if (r)
1528 m = -m;
1529
1530 if (e <= -1022)
1531 {
1532 m &= 0x1fffffffffffffU;
1533 m >>= (-1021 - e);
1534 e = -1022;
1535 }
1536
1537 r |= ((uint64_t)(e + 1022)) << 52;
1538 r |= m & 0xfffffffffffffU;
1539 #endif
1540
1541 return r;
1542 }
1543
1544 /* converts an ieee double/binary64 to a double */
1545 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1546 ecb_function_ ecb_const double
1547 ecb_binary64_to_double (uint64_t x)
1548 {
1549 double r;
1550
1551 #if ECB_STDFP
1552 memcpy (&r, &x, 8);
1553 #else
1554 /* emulation, only works for normals and subnormals and +0 */
1555 int neg = x >> 63;
1556 int e = (x >> 52) & 0x7ffU;
1557
1558 x &= 0xfffffffffffffU;
1559
1560 if (e)
1561 x |= 0x10000000000000U;
1562 else
1563 e = 1;
1564
1565 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1566 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1567
1568 r = neg ? -r : r;
1569 #endif
1570
1571 return r;
1572 }
1573
1574 /* convert a float to ieee half/binary16 */
1575 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1576 ecb_function_ ecb_const uint16_t
1577 ecb_float_to_binary16 (float x)
1578 {
1579 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1580 }
1581
1582 /* convert an ieee half/binary16 to float */
1583 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1584 ecb_function_ ecb_const float
1585 ecb_binary16_to_float (uint16_t x)
1586 {
1587 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1588 }
1589
1590#endif
1591
932#endif 1592#endif
933 1593
934/* ECB.H END */ 1594/* ECB.H END */
935 1595
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1596#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
937/* if your architecture doesn't need memory fences, e.g. because it is 1597/* if your architecture doesn't need memory fences, e.g. because it is
938 * single-cpu/core, or if you use libev in a project that doesn't use libev 1598 * single-cpu/core, or if you use libev in a project that doesn't use libev
939 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1599 * from multiple threads, then you can define ECB_NO_THREADS when compiling
940 * libev, in which cases the memory fences become nops. 1600 * libev, in which cases the memory fences become nops.
941 * alternatively, you can remove this #error and link against libpthread, 1601 * alternatively, you can remove this #error and link against libpthread,
942 * which will then provide the memory fences. 1602 * which will then provide the memory fences.
943 */ 1603 */
944# error "memory fences not defined for your architecture, please report" 1604# error "memory fences not defined for your architecture, please report"
… …
948# define ECB_MEMORY_FENCE do { } while (0) 1608# define ECB_MEMORY_FENCE do { } while (0)
949# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1609# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
950# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1610# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
951#endif 1611#endif
952 1612
953#define expect_false(cond) ecb_expect_false (cond)
954#define expect_true(cond) ecb_expect_true (cond)
955#define noinline ecb_noinline
956
957#define inline_size ecb_inline 1613#define inline_size ecb_inline
958 1614
959#if EV_FEATURE_CODE 1615#if EV_FEATURE_CODE
960# define inline_speed ecb_inline 1616# define inline_speed ecb_inline
961#else 1617#else
962# define inline_speed static noinline 1618# define inline_speed ecb_noinline static
963#endif 1619#endif
1620
1621/*****************************************************************************/
1622/* raw syscall wrappers */
1623
1624#if EV_NEED_SYSCALL
1625
1626#include <sys/syscall.h>
1627
1628/*
1629 * define some syscall wrappers for common architectures
1630 * this is mostly for nice looks during debugging, not performance.
1631 * our syscalls return < 0, not == -1, on error. which is good
1632 * enough for linux aio.
1633 * TODO: arm is also common nowadays, maybe even mips and x86
1634 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1635 */
1636#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1637 /* the costly errno access probably kills this for size optimisation */
1638
1639 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1640 ({ \
1641 long res; \
1642 register unsigned long r6 __asm__ ("r9" ); \
1643 register unsigned long r5 __asm__ ("r8" ); \
1644 register unsigned long r4 __asm__ ("r10"); \
1645 register unsigned long r3 __asm__ ("rdx"); \
1646 register unsigned long r2 __asm__ ("rsi"); \
1647 register unsigned long r1 __asm__ ("rdi"); \
1648 if (narg >= 6) r6 = (unsigned long)(arg6); \
1649 if (narg >= 5) r5 = (unsigned long)(arg5); \
1650 if (narg >= 4) r4 = (unsigned long)(arg4); \
1651 if (narg >= 3) r3 = (unsigned long)(arg3); \
1652 if (narg >= 2) r2 = (unsigned long)(arg2); \
1653 if (narg >= 1) r1 = (unsigned long)(arg1); \
1654 __asm__ __volatile__ ( \
1655 "syscall\n\t" \
1656 : "=a" (res) \
1657 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1658 : "cc", "r11", "cx", "memory"); \
1659 errno = -res; \
1660 res; \
1661 })
1662
1663#endif
1664
1665#ifdef ev_syscall
1666 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1667 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1668 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1669 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1670 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1671 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1672 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1673#else
1674 #define ev_syscall0(nr) syscall (nr)
1675 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1676 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1677 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1678 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1679 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1680 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1681#endif
1682
1683#endif
1684
1685/*****************************************************************************/
964 1686
965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
966 1688
967#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
968# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
969#else 1691#else
970# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
971#endif 1693#endif
972 1694
973#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
974#define EMPTY2(a,b) /* used to suppress some warnings */
975 1696
976typedef ev_watcher *W; 1697typedef ev_watcher *W;
977typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
978typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
979 1700
… …
1004# include "ev_win32.c" 1725# include "ev_win32.c"
1005#endif 1726#endif
1006 1727
1007/*****************************************************************************/ 1728/*****************************************************************************/
1008 1729
1730#if EV_USE_LINUXAIO
1731# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1732#endif
1733
1009/* define a suitable floor function (only used by periodics atm) */ 1734/* define a suitable floor function (only used by periodics atm) */
1010 1735
1011#if EV_USE_FLOOR 1736#if EV_USE_FLOOR
1012# include <math.h> 1737# include <math.h>
1013# define ev_floor(v) floor (v) 1738# define ev_floor(v) floor (v)
1014#else 1739#else
1015 1740
1016#include <float.h> 1741#include <float.h>
1017 1742
1018/* a floor() replacement function, should be independent of ev_tstamp type */ 1743/* a floor() replacement function, should be independent of ev_tstamp type */
1744ecb_noinline
1019static ev_tstamp noinline 1745static ev_tstamp
1020ev_floor (ev_tstamp v) 1746ev_floor (ev_tstamp v)
1021{ 1747{
1022 /* the choice of shift factor is not terribly important */ 1748 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1749#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1750 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1025#else 1751#else
1026 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1752 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1027#endif 1753#endif
1028 1754
1755 /* special treatment for negative arguments */
1756 if (ecb_expect_false (v < 0.))
1757 {
1758 ev_tstamp f = -ev_floor (-v);
1759
1760 return f - (f == v ? 0 : 1);
1761 }
1762
1029 /* argument too large for an unsigned long? */ 1763 /* argument too large for an unsigned long? then reduce it */
1030 if (expect_false (v >= shift)) 1764 if (ecb_expect_false (v >= shift))
1031 { 1765 {
1032 ev_tstamp f; 1766 ev_tstamp f;
1033 1767
1034 if (v == v - 1.) 1768 if (v == v - 1.)
1035 return v; /* very large number */ 1769 return v; /* very large numbers are assumed to be integer */
1036 1770
1037 f = shift * ev_floor (v * (1. / shift)); 1771 f = shift * ev_floor (v * (1. / shift));
1038 return f + ev_floor (v - f); 1772 return f + ev_floor (v - f);
1039 } 1773 }
1040 1774
1041 /* special treatment for negative args? */
1042 if (expect_false (v < 0.))
1043 {
1044 ev_tstamp f = -ev_floor (-v);
1045
1046 return f - (f == v ? 0 : 1);
1047 }
1048
1049 /* fits into an unsigned long */ 1775 /* fits into an unsigned long */
1050 return (unsigned long)v; 1776 return (unsigned long)v;
1051} 1777}
1052 1778
1053#endif 1779#endif
… …
1056 1782
1057#ifdef __linux 1783#ifdef __linux
1058# include <sys/utsname.h> 1784# include <sys/utsname.h>
1059#endif 1785#endif
1060 1786
1061static unsigned int noinline ecb_cold 1787ecb_noinline ecb_cold
1788static unsigned int
1062ev_linux_version (void) 1789ev_linux_version (void)
1063{ 1790{
1064#ifdef __linux 1791#ifdef __linux
1065 unsigned int v = 0; 1792 unsigned int v = 0;
1066 struct utsname buf; 1793 struct utsname buf;
… …
1095} 1822}
1096 1823
1097/*****************************************************************************/ 1824/*****************************************************************************/
1098 1825
1099#if EV_AVOID_STDIO 1826#if EV_AVOID_STDIO
1100static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
1101ev_printerr (const char *msg) 1829ev_printerr (const char *msg)
1102{ 1830{
1103 write (STDERR_FILENO, msg, strlen (msg)); 1831 write (STDERR_FILENO, msg, strlen (msg));
1104} 1832}
1105#endif 1833#endif
1106 1834
1107static void (*syserr_cb)(const char *msg) EV_THROW; 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1108 1836
1109void ecb_cold 1837ecb_cold
1838void
1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1111{ 1840{
1112 syserr_cb = cb; 1841 syserr_cb = cb;
1113} 1842}
1114 1843
1115static void noinline ecb_cold 1844ecb_noinline ecb_cold
1845static void
1116ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
1117{ 1847{
1118 if (!msg) 1848 if (!msg)
1119 msg = "(libev) system error"; 1849 msg = "(libev) system error";
1120 1850
… …
1133 abort (); 1863 abort ();
1134 } 1864 }
1135} 1865}
1136 1866
1137static void * 1867static void *
1138ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1139{ 1869{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
1143 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
1144 * implement realloc (x, 0) (as required by both ansi c-89 and 1871 * implement realloc (x, 0) (as required by both ansi c-89 and
1145 * the single unix specification, so work around them here. 1872 * the single unix specification, so work around them here.
1873 * recently, also (at least) fedora and debian started breaking it,
1874 * despite documenting it otherwise.
1146 */ 1875 */
1147 1876
1148 if (size) 1877 if (size)
1149 return realloc (ptr, size); 1878 return realloc (ptr, size);
1150 1879
1151 free (ptr); 1880 free (ptr);
1152 return 0; 1881 return 0;
1153#endif
1154} 1882}
1155 1883
1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1157 1885
1158void ecb_cold 1886ecb_cold
1887void
1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1160{ 1889{
1161 alloc = cb; 1890 alloc = cb;
1162} 1891}
1163 1892
1164inline_speed void * 1893inline_speed void *
… …
1191typedef struct 1920typedef struct
1192{ 1921{
1193 WL head; 1922 WL head;
1194 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
1195 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1924 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1925 unsigned char emask; /* some backends store the actual kernel mask in here */
1197 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
1198#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
1199 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
1200#endif 1929#endif
1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1202 SOCKET handle; 1931 SOCKET handle;
… …
1256 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
1257 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 1986 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1258 1987
1259#else 1988#else
1260 1989
1261 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 1990 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1262 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
1263 #include "ev_vars.h" 1992 #include "ev_vars.h"
1264 #undef VAR 1993 #undef VAR
1265 1994
1266 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
1267 1996
1268#endif 1997#endif
1269 1998
1270#if EV_FEATURE_API 1999#if EV_FEATURE_API
1271# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2000# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1272# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2001# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1273# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
1274#else 2003#else
1275# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
1276# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1281 2010
1282/*****************************************************************************/ 2011/*****************************************************************************/
1283 2012
1284#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
1285ev_tstamp 2014ev_tstamp
1286ev_time (void) EV_THROW 2015ev_time (void) EV_NOEXCEPT
1287{ 2016{
1288#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
1289 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
1290 { 2019 {
1291 struct timespec ts; 2020 struct timespec ts;
1292 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
1293 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
1294 } 2023 }
1295#endif 2024#endif
1296 2025
2026 {
1297 struct timeval tv; 2027 struct timeval tv;
1298 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
1299 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
1300} 2031}
1301#endif 2032#endif
1302 2033
1303inline_size ev_tstamp 2034inline_size ev_tstamp
1304get_clock (void) 2035get_clock (void)
1305{ 2036{
1306#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
1307 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
1308 { 2039 {
1309 struct timespec ts; 2040 struct timespec ts;
1310 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
1311 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
1312 } 2043 }
1313#endif 2044#endif
1314 2045
1315 return ev_time (); 2046 return ev_time ();
1316} 2047}
1317 2048
1318#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
1319ev_tstamp 2050ev_tstamp
1320ev_now (EV_P) EV_THROW 2051ev_now (EV_P) EV_NOEXCEPT
1321{ 2052{
1322 return ev_rt_now; 2053 return ev_rt_now;
1323} 2054}
1324#endif 2055#endif
1325 2056
1326void 2057void
1327ev_sleep (ev_tstamp delay) EV_THROW 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1328{ 2059{
1329 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
1330 { 2061 {
1331#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
1332 struct timespec ts; 2063 struct timespec ts;
1333 2064
1334 EV_TS_SET (ts, delay); 2065 EV_TS_SET (ts, delay);
1335 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
1336#elif defined _WIN32 2067#elif defined _WIN32
2068 /* maybe this should round up, as ms is very low resolution */
2069 /* compared to select (µs) or nanosleep (ns) */
1337 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1338#else 2071#else
1339 struct timeval tv; 2072 struct timeval tv;
1340 2073
1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2074 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1342 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1372 } 2105 }
1373 2106
1374 return ncur; 2107 return ncur;
1375} 2108}
1376 2109
1377static void * noinline ecb_cold 2110ecb_noinline ecb_cold
2111static void *
1378array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
1379{ 2113{
1380 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
1381 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
1382} 2116}
1383 2117
2118#define array_needsize_noinit(base,offset,count)
2119
1384#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
1385 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1386 2122
1387#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
1388 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
1389 { \ 2125 { \
1390 int ecb_unused ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
1391 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
1392 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
1393 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
1394 } 2130 }
1395 2131
1396#if 0 2132#if 0
1397#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
1398 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1407 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2143 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1408 2144
1409/*****************************************************************************/ 2145/*****************************************************************************/
1410 2146
1411/* dummy callback for pending events */ 2147/* dummy callback for pending events */
1412static void noinline 2148ecb_noinline
2149static void
1413pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
1414{ 2151{
1415} 2152}
1416 2153
1417void noinline 2154ecb_noinline
2155void
1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1419{ 2157{
1420 W w_ = (W)w; 2158 W w_ = (W)w;
1421 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
1422 2160
1423 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
1424 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
1425 else 2163 else
1426 { 2164 {
1427 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1429 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
1430 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
1431 } 2169 }
1432 2170
1433 pendingpri = NUMPRI - 1; 2171 pendingpri = NUMPRI - 1;
1434} 2172}
1435 2173
1436inline_speed void 2174inline_speed void
1437feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
1438{ 2176{
1439 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1440 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
1441} 2179}
1442 2180
1443inline_size void 2181inline_size void
1444feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
1479inline_speed void 2217inline_speed void
1480fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
1481{ 2219{
1482 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
1483 2221
1484 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
1485 fd_event_nocheck (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
1486} 2224}
1487 2225
1488void 2226void
1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1490{ 2228{
1491 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
1492 fd_event_nocheck (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
1493} 2231}
1494 2232
… …
1531 ev_io *w; 2269 ev_io *w;
1532 2270
1533 unsigned char o_events = anfd->events; 2271 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify; 2272 unsigned char o_reify = anfd->reify;
1535 2273
1536 anfd->reify = 0; 2274 anfd->reify = 0;
1537 2275
1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1539 { 2277 {
1540 anfd->events = 0; 2278 anfd->events = 0;
1541 2279
1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2280 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1543 anfd->events |= (unsigned char)w->events; 2281 anfd->events |= (unsigned char)w->events;
… …
1552 2290
1553 fdchangecnt = 0; 2291 fdchangecnt = 0;
1554} 2292}
1555 2293
1556/* something about the given fd changed */ 2294/* something about the given fd changed */
1557inline_size void 2295inline_size
2296void
1558fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
1559{ 2298{
1560 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
1561 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
1562 2301
1563 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
1564 { 2303 {
1565 ++fdchangecnt; 2304 ++fdchangecnt;
1566 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1567 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
1568 } 2307 }
1569} 2308}
1570 2309
1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2310/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1572inline_speed void ecb_cold 2311inline_speed ecb_cold void
1573fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
1574{ 2313{
1575 ev_io *w; 2314 ev_io *w;
1576 2315
1577 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2319 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1581 } 2320 }
1582} 2321}
1583 2322
1584/* check whether the given fd is actually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
1585inline_size int ecb_cold 2324inline_size ecb_cold int
1586fd_valid (int fd) 2325fd_valid (int fd)
1587{ 2326{
1588#ifdef _WIN32 2327#ifdef _WIN32
1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1590#else 2329#else
1591 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
1592#endif 2331#endif
1593} 2332}
1594 2333
1595/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
1596static void noinline ecb_cold 2335ecb_noinline ecb_cold
2336static void
1597fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
1598{ 2338{
1599 int fd; 2339 int fd;
1600 2340
1601 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1603 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1604 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1605} 2345}
1606 2346
1607/* called on ENOMEM in select/poll to kill some fds and retry */ 2347/* called on ENOMEM in select/poll to kill some fds and retry */
1608static void noinline ecb_cold 2348ecb_noinline ecb_cold
2349static void
1609fd_enomem (EV_P) 2350fd_enomem (EV_P)
1610{ 2351{
1611 int fd; 2352 int fd;
1612 2353
1613 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1617 break; 2358 break;
1618 } 2359 }
1619} 2360}
1620 2361
1621/* usually called after fork if backend needs to re-arm all fds from scratch */ 2362/* usually called after fork if backend needs to re-arm all fds from scratch */
1622static void noinline 2363ecb_noinline
2364static void
1623fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1624{ 2366{
1625 int fd; 2367 int fd;
1626 2368
1627 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1680 ev_tstamp minat; 2422 ev_tstamp minat;
1681 ANHE *minpos; 2423 ANHE *minpos;
1682 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1683 2425
1684 /* find minimum child */ 2426 /* find minimum child */
1685 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1686 { 2428 {
1687 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1688 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2430 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1689 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2431 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1690 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2432 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1691 } 2433 }
1692 else if (pos < E) 2434 else if (pos < E)
1693 { 2435 {
1694 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1695 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2437 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1696 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2438 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1697 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2439 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1698 } 2440 }
1699 else 2441 else
1700 break; 2442 break;
1701 2443
1702 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1710 2452
1711 heap [k] = he; 2453 heap [k] = he;
1712 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1713} 2455}
1714 2456
1715#else /* 4HEAP */ 2457#else /* not 4HEAP */
1716 2458
1717#define HEAP0 1 2459#define HEAP0 1
1718#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1719#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1720 2462
… …
1808 2550
1809/*****************************************************************************/ 2551/*****************************************************************************/
1810 2552
1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1812 2554
1813static void noinline ecb_cold 2555ecb_noinline ecb_cold
2556static void
1814evpipe_init (EV_P) 2557evpipe_init (EV_P)
1815{ 2558{
1816 if (!ev_is_active (&pipe_w)) 2559 if (!ev_is_active (&pipe_w))
1817 { 2560 {
2561 int fds [2];
2562
1818# if EV_USE_EVENTFD 2563# if EV_USE_EVENTFD
2564 fds [0] = -1;
1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2565 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1820 if (evfd < 0 && errno == EINVAL) 2566 if (fds [1] < 0 && errno == EINVAL)
1821 evfd = eventfd (0, 0); 2567 fds [1] = eventfd (0, 0);
1822 2568
1823 if (evfd >= 0) 2569 if (fds [1] < 0)
1824 {
1825 evpipe [0] = -1;
1826 fd_intern (evfd); /* doing it twice doesn't hurt */
1827 ev_io_set (&pipe_w, evfd, EV_READ);
1828 }
1829 else
1830# endif 2570# endif
1831 { 2571 {
1832 while (pipe (evpipe)) 2572 while (pipe (fds))
1833 ev_syserr ("(libev) error creating signal/async pipe"); 2573 ev_syserr ("(libev) error creating signal/async pipe");
1834 2574
1835 fd_intern (evpipe [0]); 2575 fd_intern (fds [0]);
1836 fd_intern (evpipe [1]);
1837 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1838 } 2576 }
1839 2577
2578 evpipe [0] = fds [0];
2579
2580 if (evpipe [1] < 0)
2581 evpipe [1] = fds [1]; /* first call, set write fd */
2582 else
2583 {
2584 /* on subsequent calls, do not change evpipe [1] */
2585 /* so that evpipe_write can always rely on its value. */
2586 /* this branch does not do anything sensible on windows, */
2587 /* so must not be executed on windows */
2588
2589 dup2 (fds [1], evpipe [1]);
2590 close (fds [1]);
2591 }
2592
2593 fd_intern (evpipe [1]);
2594
2595 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1840 ev_io_start (EV_A_ &pipe_w); 2596 ev_io_start (EV_A_ &pipe_w);
1841 ev_unref (EV_A); /* watcher should not keep loop alive */ 2597 ev_unref (EV_A); /* watcher should not keep loop alive */
1842 } 2598 }
1843} 2599}
1844 2600
1845inline_speed void 2601inline_speed void
1846evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1847{ 2603{
1848 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1849 2605
1850 if (expect_true (*flag)) 2606 if (ecb_expect_true (*flag))
1851 return; 2607 return;
1852 2608
1853 *flag = 1; 2609 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2610 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856 2611
1857 pipe_write_skipped = 1; 2612 pipe_write_skipped = 1;
1858 2613
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ 2614 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860 2615
1861 if (pipe_write_wanted) 2616 if (pipe_write_wanted)
1862 { 2617 {
1863 int old_errno; 2618 int old_errno;
1864 2619
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */ 2620 pipe_write_skipped = 0;
2621 ECB_MEMORY_FENCE_RELEASE;
1866 2622
1867 old_errno = errno; /* save errno because write will clobber it */ 2623 old_errno = errno; /* save errno because write will clobber it */
1868 2624
1869#if EV_USE_EVENTFD 2625#if EV_USE_EVENTFD
1870 if (evfd >= 0) 2626 if (evpipe [0] < 0)
1871 { 2627 {
1872 uint64_t counter = 1; 2628 uint64_t counter = 1;
1873 write (evfd, &counter, sizeof (uint64_t)); 2629 write (evpipe [1], &counter, sizeof (uint64_t));
1874 } 2630 }
1875 else 2631 else
1876#endif 2632#endif
1877 { 2633 {
1878#ifdef _WIN32 2634#ifdef _WIN32
1879 WSABUF buf; 2635 WSABUF buf;
1880 DWORD sent; 2636 DWORD sent;
1881 buf.buf = &buf; 2637 buf.buf = (char *)&buf;
1882 buf.len = 1; 2638 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2639 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else 2640#else
1885 write (evpipe [1], &(evpipe [1]), 1); 2641 write (evpipe [1], &(evpipe [1]), 1);
1886#endif 2642#endif
… …
1898 int i; 2654 int i;
1899 2655
1900 if (revents & EV_READ) 2656 if (revents & EV_READ)
1901 { 2657 {
1902#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1903 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1904 { 2660 {
1905 uint64_t counter; 2661 uint64_t counter;
1906 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1907 } 2663 }
1908 else 2664 else
1909#endif 2665#endif
1910 { 2666 {
1911 char dummy[4]; 2667 char dummy[4];
… …
1929#if EV_SIGNAL_ENABLE 2685#if EV_SIGNAL_ENABLE
1930 if (sig_pending) 2686 if (sig_pending)
1931 { 2687 {
1932 sig_pending = 0; 2688 sig_pending = 0;
1933 2689
1934 ECB_MEMORY_FENCE_RELEASE; 2690 ECB_MEMORY_FENCE;
1935 2691
1936 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1937 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1938 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1939 } 2695 }
1940#endif 2696#endif
1941 2697
1942#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1943 if (async_pending) 2699 if (async_pending)
1944 { 2700 {
1945 async_pending = 0; 2701 async_pending = 0;
1946 2702
1947 ECB_MEMORY_FENCE_RELEASE; 2703 ECB_MEMORY_FENCE;
1948 2704
1949 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1950 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1951 { 2707 {
1952 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1953 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1954 } 2711 }
1955 } 2712 }
1956#endif 2713#endif
1957} 2714}
1958 2715
1959/*****************************************************************************/ 2716/*****************************************************************************/
1960 2717
1961void 2718void
1962ev_feed_signal (int signum) EV_THROW 2719ev_feed_signal (int signum) EV_NOEXCEPT
1963{ 2720{
1964#if EV_MULTIPLICITY 2721#if EV_MULTIPLICITY
2722 EV_P;
2723 ECB_MEMORY_FENCE_ACQUIRE;
1965 EV_P = signals [signum - 1].loop; 2724 EV_A = signals [signum - 1].loop;
1966 2725
1967 if (!EV_A) 2726 if (!EV_A)
1968 return; 2727 return;
1969#endif 2728#endif
1970 2729
1971 if (!ev_active (&pipe_w))
1972 return;
1973
1974 signals [signum - 1].pending = 1; 2730 signals [signum - 1].pending = 1;
1975 evpipe_write (EV_A_ &sig_pending); 2731 evpipe_write (EV_A_ &sig_pending);
1976} 2732}
1977 2733
1978static void 2734static void
… …
1983#endif 2739#endif
1984 2740
1985 ev_feed_signal (signum); 2741 ev_feed_signal (signum);
1986} 2742}
1987 2743
1988void noinline 2744ecb_noinline
2745void
1989ev_feed_signal_event (EV_P_ int signum) EV_THROW 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1990{ 2747{
1991 WL w; 2748 WL w;
1992 2749
1993 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1994 return; 2751 return;
1995 2752
1996 --signum; 2753 --signum;
1997 2754
1998#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1999 /* it is permissible to try to feed a signal to the wrong loop */ 2756 /* it is permissible to try to feed a signal to the wrong loop */
2000 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
2001 2758
2002 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
2003 return; 2760 return;
2004#endif 2761#endif
2005 2762
2006 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
2007 2765
2008 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
2009 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2010} 2768}
2011 2769
… …
2102# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
2103#endif 2861#endif
2104#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
2105# include "ev_epoll.c" 2863# include "ev_epoll.c"
2106#endif 2864#endif
2865#if EV_USE_LINUXAIO
2866# include "ev_linuxaio.c"
2867#endif
2868#if EV_USE_IOURING
2869# include "ev_iouring.c"
2870#endif
2107#if EV_USE_POLL 2871#if EV_USE_POLL
2108# include "ev_poll.c" 2872# include "ev_poll.c"
2109#endif 2873#endif
2110#if EV_USE_SELECT 2874#if EV_USE_SELECT
2111# include "ev_select.c" 2875# include "ev_select.c"
2112#endif 2876#endif
2113 2877
2114int ecb_cold 2878ecb_cold int
2115ev_version_major (void) EV_THROW 2879ev_version_major (void) EV_NOEXCEPT
2116{ 2880{
2117 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
2118} 2882}
2119 2883
2120int ecb_cold 2884ecb_cold int
2121ev_version_minor (void) EV_THROW 2885ev_version_minor (void) EV_NOEXCEPT
2122{ 2886{
2123 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
2124} 2888}
2125 2889
2126/* return true if we are running with elevated privileges and should ignore env variables */ 2890/* return true if we are running with elevated privileges and should ignore env variables */
2127int inline_size ecb_cold 2891inline_size ecb_cold int
2128enable_secure (void) 2892enable_secure (void)
2129{ 2893{
2130#ifdef _WIN32 2894#ifdef _WIN32
2131 return 0; 2895 return 0;
2132#else 2896#else
2133 return getuid () != geteuid () 2897 return getuid () != geteuid ()
2134 || getgid () != getegid (); 2898 || getgid () != getegid ();
2135#endif 2899#endif
2136} 2900}
2137 2901
2138unsigned int ecb_cold 2902ecb_cold
2903unsigned int
2139ev_supported_backends (void) EV_THROW 2904ev_supported_backends (void) EV_NOEXCEPT
2140{ 2905{
2141 unsigned int flags = 0; 2906 unsigned int flags = 0;
2142 2907
2143 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2144 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2145 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2910 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2911 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2912 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2146 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2147 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2148 2915
2149 return flags; 2916 return flags;
2150} 2917}
2151 2918
2152unsigned int ecb_cold 2919ecb_cold
2920unsigned int
2153ev_recommended_backends (void) EV_THROW 2921ev_recommended_backends (void) EV_NOEXCEPT
2154{ 2922{
2155 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
2156 2924
2157#ifndef __NetBSD__ 2925#ifndef __NetBSD__
2158 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
2166#endif 2934#endif
2167#ifdef __FreeBSD__ 2935#ifdef __FreeBSD__
2168 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2936 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2169#endif 2937#endif
2170 2938
2939 /* TODO: linuxaio is very experimental */
2940#if !EV_RECOMMEND_LINUXAIO
2941 flags &= ~EVBACKEND_LINUXAIO;
2942#endif
2943 /* TODO: linuxaio is super experimental */
2944#if !EV_RECOMMEND_IOURING
2945 flags &= ~EVBACKEND_IOURING;
2946#endif
2947
2171 return flags; 2948 return flags;
2172} 2949}
2173 2950
2174unsigned int ecb_cold 2951ecb_cold
2952unsigned int
2175ev_embeddable_backends (void) EV_THROW 2953ev_embeddable_backends (void) EV_NOEXCEPT
2176{ 2954{
2177 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2178 2956
2179 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2957 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2180 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2181 flags &= ~EVBACKEND_EPOLL; 2959 flags &= ~EVBACKEND_EPOLL;
2182 2960
2961 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2962
2963 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2964 * because our backend_fd is the epoll fd we need as fallback.
2965 * if the kernel ever is fixed, this might change...
2966 */
2967
2183 return flags; 2968 return flags;
2184} 2969}
2185 2970
2186unsigned int 2971unsigned int
2187ev_backend (EV_P) EV_THROW 2972ev_backend (EV_P) EV_NOEXCEPT
2188{ 2973{
2189 return backend; 2974 return backend;
2190} 2975}
2191 2976
2192#if EV_FEATURE_API 2977#if EV_FEATURE_API
2193unsigned int 2978unsigned int
2194ev_iteration (EV_P) EV_THROW 2979ev_iteration (EV_P) EV_NOEXCEPT
2195{ 2980{
2196 return loop_count; 2981 return loop_count;
2197} 2982}
2198 2983
2199unsigned int 2984unsigned int
2200ev_depth (EV_P) EV_THROW 2985ev_depth (EV_P) EV_NOEXCEPT
2201{ 2986{
2202 return loop_depth; 2987 return loop_depth;
2203} 2988}
2204 2989
2205void 2990void
2206ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2207{ 2992{
2208 io_blocktime = interval; 2993 io_blocktime = interval;
2209} 2994}
2210 2995
2211void 2996void
2212ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2213{ 2998{
2214 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
2215} 3000}
2216 3001
2217void 3002void
2218ev_set_userdata (EV_P_ void *data) EV_THROW 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2219{ 3004{
2220 userdata = data; 3005 userdata = data;
2221} 3006}
2222 3007
2223void * 3008void *
2224ev_userdata (EV_P) EV_THROW 3009ev_userdata (EV_P) EV_NOEXCEPT
2225{ 3010{
2226 return userdata; 3011 return userdata;
2227} 3012}
2228 3013
2229void 3014void
2230ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 3015ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2231{ 3016{
2232 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
2233} 3018}
2234 3019
2235void 3020void
2236ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3021ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2237{ 3022{
2238 release_cb = release; 3023 release_cb = release;
2239 acquire_cb = acquire; 3024 acquire_cb = acquire;
2240} 3025}
2241#endif 3026#endif
2242 3027
2243/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
2244static void noinline ecb_cold 3029ecb_noinline ecb_cold
3030static void
2245loop_init (EV_P_ unsigned int flags) EV_THROW 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2246{ 3032{
2247 if (!backend) 3033 if (!backend)
2248 { 3034 {
2249 origflags = flags; 3035 origflags = flags;
2250 3036
… …
2295#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
2296 async_pending = 0; 3082 async_pending = 0;
2297#endif 3083#endif
2298 pipe_write_skipped = 0; 3084 pipe_write_skipped = 0;
2299 pipe_write_wanted = 0; 3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
2300#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
2301 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2302#endif 3090#endif
2303#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
2304 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2306 3094
2307 if (!(flags & EVBACKEND_MASK)) 3095 if (!(flags & EVBACKEND_MASK))
2308 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
2309 3097
2310#if EV_USE_IOCP 3098#if EV_USE_IOCP
2311 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2312#endif 3100#endif
2313#if EV_USE_PORT 3101#if EV_USE_PORT
2314 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2315#endif 3103#endif
2316#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
2317 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3105 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3106#endif
3107#if EV_USE_IOURING
3108 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3109#endif
3110#if EV_USE_LINUXAIO
3111 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2318#endif 3112#endif
2319#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
2320 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2321#endif 3115#endif
2322#if EV_USE_POLL 3116#if EV_USE_POLL
2323 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2324#endif 3118#endif
2325#if EV_USE_SELECT 3119#if EV_USE_SELECT
2326 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2327#endif 3121#endif
2328 3122
2329 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
2330 3124
2331#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2334#endif 3128#endif
2335 } 3129 }
2336} 3130}
2337 3131
2338/* free up a loop structure */ 3132/* free up a loop structure */
2339void ecb_cold 3133ecb_cold
3134void
2340ev_loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
2341{ 3136{
2342 int i; 3137 int i;
2343 3138
2344#if EV_MULTIPLICITY 3139#if EV_MULTIPLICITY
… …
2347 return; 3142 return;
2348#endif 3143#endif
2349 3144
2350#if EV_CLEANUP_ENABLE 3145#if EV_CLEANUP_ENABLE
2351 /* queue cleanup watchers (and execute them) */ 3146 /* queue cleanup watchers (and execute them) */
2352 if (expect_false (cleanupcnt)) 3147 if (ecb_expect_false (cleanupcnt))
2353 { 3148 {
2354 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3149 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2355 EV_INVOKE_PENDING; 3150 EV_INVOKE_PENDING;
2356 } 3151 }
2357#endif 3152#endif
2358 3153
2359#if EV_CHILD_ENABLE 3154#if EV_CHILD_ENABLE
2360 if (ev_is_active (&childev)) 3155 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2361 { 3156 {
2362 ev_ref (EV_A); /* child watcher */ 3157 ev_ref (EV_A); /* child watcher */
2363 ev_signal_stop (EV_A_ &childev); 3158 ev_signal_stop (EV_A_ &childev);
2364 } 3159 }
2365#endif 3160#endif
… …
2367 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
2368 { 3163 {
2369 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
2370 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
2371 3166
2372#if EV_USE_EVENTFD
2373 if (evfd >= 0)
2374 close (evfd);
2375#endif
2376
2377 if (evpipe [0] >= 0)
2378 {
2379 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2380 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2381 }
2382 } 3169 }
2383 3170
2384#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
2385 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
2386 close (sigfd); 3173 close (sigfd);
… …
2393 3180
2394 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
2395 close (backend_fd); 3182 close (backend_fd);
2396 3183
2397#if EV_USE_IOCP 3184#if EV_USE_IOCP
2398 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2399#endif 3186#endif
2400#if EV_USE_PORT 3187#if EV_USE_PORT
2401 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2402#endif 3189#endif
2403#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
2404 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3191 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3192#endif
3193#if EV_USE_IOURING
3194 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3195#endif
3196#if EV_USE_LINUXAIO
3197 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2405#endif 3198#endif
2406#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
2407 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2408#endif 3201#endif
2409#if EV_USE_POLL 3202#if EV_USE_POLL
2410 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2411#endif 3204#endif
2412#if EV_USE_SELECT 3205#if EV_USE_SELECT
2413 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2414#endif 3207#endif
2415 3208
2416 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
2417 { 3210 {
2418 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
2460 3253
2461inline_size void 3254inline_size void
2462loop_fork (EV_P) 3255loop_fork (EV_P)
2463{ 3256{
2464#if EV_USE_PORT 3257#if EV_USE_PORT
2465 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2466#endif 3259#endif
2467#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
2468 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3261 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3262#endif
3263#if EV_USE_IOURING
3264 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3265#endif
3266#if EV_USE_LINUXAIO
3267 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2469#endif 3268#endif
2470#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
2471 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2472#endif 3271#endif
2473#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
2474 infy_fork (EV_A); 3273 infy_fork (EV_A);
2475#endif 3274#endif
2476 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2477 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
2478 { 3278 {
2479 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2480 3280
2481 ev_ref (EV_A); 3281 ev_ref (EV_A);
2482 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
2483 3283
2484#if EV_USE_EVENTFD
2485 if (evfd >= 0)
2486 close (evfd);
2487#endif
2488
2489 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
2490 {
2491 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
2492 EV_WIN32_CLOSE_FD (evpipe [1]);
2493 }
2494 3286
2495#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2496 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
2497 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
2498 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2499#endif
2500 } 3290 }
3291#endif
2501 3292
2502 postfork = 0; 3293 postfork = 0;
2503} 3294}
2504 3295
2505#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
2506 3297
3298ecb_cold
2507struct ev_loop * ecb_cold 3299struct ev_loop *
2508ev_loop_new (unsigned int flags) EV_THROW 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
2509{ 3301{
2510 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2511 3303
2512 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
2513 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
… …
2520} 3312}
2521 3313
2522#endif /* multiplicity */ 3314#endif /* multiplicity */
2523 3315
2524#if EV_VERIFY 3316#if EV_VERIFY
2525static void noinline ecb_cold 3317ecb_noinline ecb_cold
3318static void
2526verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
2527{ 3320{
2528 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3321 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2529 3322
2530 if (w->pending) 3323 if (w->pending)
2531 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3324 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2532} 3325}
2533 3326
2534static void noinline ecb_cold 3327ecb_noinline ecb_cold
3328static void
2535verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
2536{ 3330{
2537 int i; 3331 int i;
2538 3332
2539 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2544 3338
2545 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2546 } 3340 }
2547} 3341}
2548 3342
2549static void noinline ecb_cold 3343ecb_noinline ecb_cold
3344static void
2550array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
2551{ 3346{
2552 while (cnt--) 3347 while (cnt--)
2553 { 3348 {
2554 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2557} 3352}
2558#endif 3353#endif
2559 3354
2560#if EV_FEATURE_API 3355#if EV_FEATURE_API
2561void ecb_cold 3356void ecb_cold
2562ev_verify (EV_P) EV_THROW 3357ev_verify (EV_P) EV_NOEXCEPT
2563{ 3358{
2564#if EV_VERIFY 3359#if EV_VERIFY
2565 int i; 3360 int i;
2566 WL w, w2; 3361 WL w, w2;
2567 3362
… …
2643#endif 3438#endif
2644} 3439}
2645#endif 3440#endif
2646 3441
2647#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
2648struct ev_loop * ecb_cold 3444struct ev_loop *
2649#else 3445#else
2650int 3446int
2651#endif 3447#endif
2652ev_default_loop (unsigned int flags) EV_THROW 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
2653{ 3449{
2654 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
2655 { 3451 {
2656#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
2657 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2676 3472
2677 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
2678} 3474}
2679 3475
2680void 3476void
2681ev_loop_fork (EV_P) EV_THROW 3477ev_loop_fork (EV_P) EV_NOEXCEPT
2682{ 3478{
2683 postfork = 1; /* must be in line with ev_default_fork */ 3479 postfork = 1;
2684} 3480}
2685 3481
2686/*****************************************************************************/ 3482/*****************************************************************************/
2687 3483
2688void 3484void
… …
2690{ 3486{
2691 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
2692} 3488}
2693 3489
2694unsigned int 3490unsigned int
2695ev_pending_count (EV_P) EV_THROW 3491ev_pending_count (EV_P) EV_NOEXCEPT
2696{ 3492{
2697 int pri; 3493 int pri;
2698 unsigned int count = 0; 3494 unsigned int count = 0;
2699 3495
2700 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
2701 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
2702 3498
2703 return count; 3499 return count;
2704} 3500}
2705 3501
2706void noinline 3502ecb_noinline
3503void
2707ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2708{ 3505{
2709 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3506 pendingpri = NUMPRI;
3507
3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
2710 while (pendingcnt [pendingpri]) 3513 while (pendingcnt [pendingpri])
2711 { 3514 {
2712 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2713 3516
2714 p->w->pending = 0; 3517 p->w->pending = 0;
2715 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2716 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2717 } 3520 }
3521 }
3522 while (pendingpri);
2718} 3523}
2719 3524
2720#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2721/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2722/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2723inline_size void 3528inline_size void
2724idle_reify (EV_P) 3529idle_reify (EV_P)
2725{ 3530{
2726 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2727 { 3532 {
2728 int pri; 3533 int pri;
2729 3534
2730 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2731 { 3536 {
… …
2761 { 3566 {
2762 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2763 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2764 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2765 3570
2766 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3571 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2767 3572
2768 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2769 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2770 } 3575 }
2771 else 3576 else
… …
2780 } 3585 }
2781} 3586}
2782 3587
2783#if EV_PERIODIC_ENABLE 3588#if EV_PERIODIC_ENABLE
2784 3589
2785static void noinline 3590ecb_noinline
3591static void
2786periodic_recalc (EV_P_ ev_periodic *w) 3592periodic_recalc (EV_P_ ev_periodic *w)
2787{ 3593{
2788 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3594 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2789 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3595 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2790 3596
… …
2792 while (at <= ev_rt_now) 3598 while (at <= ev_rt_now)
2793 { 3599 {
2794 ev_tstamp nat = at + w->interval; 3600 ev_tstamp nat = at + w->interval;
2795 3601
2796 /* when resolution fails us, we use ev_rt_now */ 3602 /* when resolution fails us, we use ev_rt_now */
2797 if (expect_false (nat == at)) 3603 if (ecb_expect_false (nat == at))
2798 { 3604 {
2799 at = ev_rt_now; 3605 at = ev_rt_now;
2800 break; 3606 break;
2801 } 3607 }
2802 3608
… …
2812{ 3618{
2813 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2814 3620
2815 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2816 { 3622 {
2817 int feed_count = 0;
2818
2819 do 3623 do
2820 { 3624 {
2821 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2822 3626
2823 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3627 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2850 } 3654 }
2851} 3655}
2852 3656
2853/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2854/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3658/* TODO: maybe ensure that at least one event happens when jumping forward? */
2855static void noinline ecb_cold 3659ecb_noinline ecb_cold
3660static void
2856periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2857{ 3662{
2858 int i; 3663 int i;
2859 3664
2860 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2873 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2874} 3679}
2875#endif 3680#endif
2876 3681
2877/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2878static void noinline ecb_cold 3683ecb_noinline ecb_cold
3684static void
2879timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2880{ 3686{
2881 int i; 3687 int i;
2882 3688
2883 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2892/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2893inline_speed void 3699inline_speed void
2894time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2895{ 3701{
2896#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2897 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2898 { 3704 {
2899 int i; 3705 int i;
2900 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2901 3707
2902 mn_now = get_clock (); 3708 mn_now = get_clock ();
2903 3709
2904 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2905 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2906 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3712 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2907 { 3713 {
2908 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2909 return; 3715 return;
2910 } 3716 }
2911 3717
… …
2925 ev_tstamp diff; 3731 ev_tstamp diff;
2926 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2927 3733
2928 diff = odiff - rtmn_diff; 3734 diff = odiff - rtmn_diff;
2929 3735
2930 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3736 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2931 return; /* all is well */ 3737 return; /* all is well */
2932 3738
2933 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2934 mn_now = get_clock (); 3740 mn_now = get_clock ();
2935 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2944 else 3750 else
2945#endif 3751#endif
2946 { 3752 {
2947 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2948 3754
2949 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3755 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2950 { 3756 {
2951 /* adjust timers. this is easy, as the offset is the same for all of them */ 3757 /* adjust timers. this is easy, as the offset is the same for all of them */
2952 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2953#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2954 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2977#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2978 ev_verify (EV_A); 3784 ev_verify (EV_A);
2979#endif 3785#endif
2980 3786
2981#ifndef _WIN32 3787#ifndef _WIN32
2982 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2983 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2984 { 3790 {
2985 curpid = getpid (); 3791 curpid = getpid ();
2986 postfork = 1; 3792 postfork = 1;
2987 } 3793 }
2988#endif 3794#endif
2989 3795
2990#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2991 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2992 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2993 if (forkcnt) 3799 if (forkcnt)
2994 { 3800 {
2995 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2996 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2997 } 3803 }
2998#endif 3804#endif
2999 3805
3000#if EV_PREPARE_ENABLE 3806#if EV_PREPARE_ENABLE
3001 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
3002 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
3003 { 3809 {
3004 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3005 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
3006 } 3812 }
3007#endif 3813#endif
3008 3814
3009 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
3010 break; 3816 break;
3011 3817
3012 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
3013 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
3014 loop_fork (EV_A); 3820 loop_fork (EV_A);
3015 3821
3016 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
3017 fd_reify (EV_A); 3823 fd_reify (EV_A);
3018 3824
… …
3023 3829
3024 /* remember old timestamp for io_blocktime calculation */ 3830 /* remember old timestamp for io_blocktime calculation */
3025 ev_tstamp prev_mn_now = mn_now; 3831 ev_tstamp prev_mn_now = mn_now;
3026 3832
3027 /* update time to cancel out callback processing overhead */ 3833 /* update time to cancel out callback processing overhead */
3028 time_update (EV_A_ 1e100); 3834 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3029 3835
3030 /* from now on, we want a pipe-wake-up */ 3836 /* from now on, we want a pipe-wake-up */
3031 pipe_write_wanted = 1; 3837 pipe_write_wanted = 1;
3032 3838
3033 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3839 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3034 3840
3035 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3036 { 3842 {
3037 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3038 3844
3039 if (timercnt) 3845 if (timercnt)
3040 { 3846 {
3041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3042 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
… …
3049 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
3050 } 3856 }
3051#endif 3857#endif
3052 3858
3053 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
3054 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
3055 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
3056 3862
3057 /* at this point, we NEED to wait, so we have to ensure */ 3863 /* at this point, we NEED to wait, so we have to ensure */
3058 /* to pass a minimum nonzero value to the backend */ 3864 /* to pass a minimum nonzero value to the backend */
3059 if (expect_false (waittime < backend_mintime)) 3865 if (ecb_expect_false (waittime < backend_mintime))
3060 waittime = backend_mintime; 3866 waittime = backend_mintime;
3061 3867
3062 /* extra check because io_blocktime is commonly 0 */ 3868 /* extra check because io_blocktime is commonly 0 */
3063 if (expect_false (io_blocktime)) 3869 if (ecb_expect_false (io_blocktime))
3064 { 3870 {
3065 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3871 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3066 3872
3067 if (sleeptime > waittime - backend_mintime) 3873 if (sleeptime > waittime - backend_mintime)
3068 sleeptime = waittime - backend_mintime; 3874 sleeptime = waittime - backend_mintime;
3069 3875
3070 if (expect_true (sleeptime > 0.)) 3876 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3071 { 3877 {
3072 ev_sleep (sleeptime); 3878 ev_sleep (sleeptime);
3073 waittime -= sleeptime; 3879 waittime -= sleeptime;
3074 } 3880 }
3075 } 3881 }
… …
3082 backend_poll (EV_A_ waittime); 3888 backend_poll (EV_A_ waittime);
3083 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3889 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3084 3890
3085 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3891 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3086 3892
3893 ECB_MEMORY_FENCE_ACQUIRE;
3087 if (pipe_write_skipped) 3894 if (pipe_write_skipped)
3088 { 3895 {
3089 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3896 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3897 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3091 } 3898 }
3092 3899
3093
3094 /* update ev_rt_now, do magic */ 3900 /* update ev_rt_now, do magic */
3095 time_update (EV_A_ waittime + sleeptime); 3901 time_update (EV_A_ waittime + sleeptime);
3096 } 3902 }
3097 3903
3098 /* queue pending timers and reschedule them */ 3904 /* queue pending timers and reschedule them */
… …
3106 idle_reify (EV_A); 3912 idle_reify (EV_A);
3107#endif 3913#endif
3108 3914
3109#if EV_CHECK_ENABLE 3915#if EV_CHECK_ENABLE
3110 /* queue check watchers, to be executed first */ 3916 /* queue check watchers, to be executed first */
3111 if (expect_false (checkcnt)) 3917 if (ecb_expect_false (checkcnt))
3112 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3918 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3113#endif 3919#endif
3114 3920
3115 EV_INVOKE_PENDING; 3921 EV_INVOKE_PENDING;
3116 } 3922 }
3117 while (expect_true ( 3923 while (ecb_expect_true (
3118 activecnt 3924 activecnt
3119 && !loop_done 3925 && !loop_done
3120 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3926 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3121 )); 3927 ));
3122 3928
… …
3129 3935
3130 return activecnt; 3936 return activecnt;
3131} 3937}
3132 3938
3133void 3939void
3134ev_break (EV_P_ int how) EV_THROW 3940ev_break (EV_P_ int how) EV_NOEXCEPT
3135{ 3941{
3136 loop_done = how; 3942 loop_done = how;
3137} 3943}
3138 3944
3139void 3945void
3140ev_ref (EV_P) EV_THROW 3946ev_ref (EV_P) EV_NOEXCEPT
3141{ 3947{
3142 ++activecnt; 3948 ++activecnt;
3143} 3949}
3144 3950
3145void 3951void
3146ev_unref (EV_P) EV_THROW 3952ev_unref (EV_P) EV_NOEXCEPT
3147{ 3953{
3148 --activecnt; 3954 --activecnt;
3149} 3955}
3150 3956
3151void 3957void
3152ev_now_update (EV_P) EV_THROW 3958ev_now_update (EV_P) EV_NOEXCEPT
3153{ 3959{
3154 time_update (EV_A_ 1e100); 3960 time_update (EV_A_ EV_TSTAMP_HUGE);
3155} 3961}
3156 3962
3157void 3963void
3158ev_suspend (EV_P) EV_THROW 3964ev_suspend (EV_P) EV_NOEXCEPT
3159{ 3965{
3160 ev_now_update (EV_A); 3966 ev_now_update (EV_A);
3161} 3967}
3162 3968
3163void 3969void
3164ev_resume (EV_P) EV_THROW 3970ev_resume (EV_P) EV_NOEXCEPT
3165{ 3971{
3166 ev_tstamp mn_prev = mn_now; 3972 ev_tstamp mn_prev = mn_now;
3167 3973
3168 ev_now_update (EV_A); 3974 ev_now_update (EV_A);
3169 timers_reschedule (EV_A_ mn_now - mn_prev); 3975 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3186inline_size void 3992inline_size void
3187wlist_del (WL *head, WL elem) 3993wlist_del (WL *head, WL elem)
3188{ 3994{
3189 while (*head) 3995 while (*head)
3190 { 3996 {
3191 if (expect_true (*head == elem)) 3997 if (ecb_expect_true (*head == elem))
3192 { 3998 {
3193 *head = elem->next; 3999 *head = elem->next;
3194 break; 4000 break;
3195 } 4001 }
3196 4002
… …
3208 w->pending = 0; 4014 w->pending = 0;
3209 } 4015 }
3210} 4016}
3211 4017
3212int 4018int
3213ev_clear_pending (EV_P_ void *w) EV_THROW 4019ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3214{ 4020{
3215 W w_ = (W)w; 4021 W w_ = (W)w;
3216 int pending = w_->pending; 4022 int pending = w_->pending;
3217 4023
3218 if (expect_true (pending)) 4024 if (ecb_expect_true (pending))
3219 { 4025 {
3220 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3221 p->w = (W)&pending_w; 4027 p->w = (W)&pending_w;
3222 w_->pending = 0; 4028 w_->pending = 0;
3223 return p->events; 4029 return p->events;
… …
3250 w->active = 0; 4056 w->active = 0;
3251} 4057}
3252 4058
3253/*****************************************************************************/ 4059/*****************************************************************************/
3254 4060
3255void noinline 4061ecb_noinline
4062void
3256ev_io_start (EV_P_ ev_io *w) EV_THROW 4063ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3257{ 4064{
3258 int fd = w->fd; 4065 int fd = w->fd;
3259 4066
3260 if (expect_false (ev_is_active (w))) 4067 if (ecb_expect_false (ev_is_active (w)))
3261 return; 4068 return;
3262 4069
3263 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4070 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3264 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4071 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3265 4072
4073#if EV_VERIFY >= 2
4074 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4075#endif
3266 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
3267 4077
3268 ev_start (EV_A_ (W)w, 1); 4078 ev_start (EV_A_ (W)w, 1);
3269 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4079 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3270 wlist_add (&anfds[fd].head, (WL)w); 4080 wlist_add (&anfds[fd].head, (WL)w);
3271 4081
3272 /* common bug, apparently */ 4082 /* common bug, apparently */
3273 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4083 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3274 4084
… …
3276 w->events &= ~EV__IOFDSET; 4086 w->events &= ~EV__IOFDSET;
3277 4087
3278 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
3279} 4089}
3280 4090
3281void noinline 4091ecb_noinline
4092void
3282ev_io_stop (EV_P_ ev_io *w) EV_THROW 4093ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3283{ 4094{
3284 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
3285 if (expect_false (!ev_is_active (w))) 4096 if (ecb_expect_false (!ev_is_active (w)))
3286 return; 4097 return;
3287 4098
3288 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4099 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3289 4100
4101#if EV_VERIFY >= 2
4102 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4103#endif
3290 EV_FREQUENT_CHECK; 4104 EV_FREQUENT_CHECK;
3291 4105
3292 wlist_del (&anfds[w->fd].head, (WL)w); 4106 wlist_del (&anfds[w->fd].head, (WL)w);
3293 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
3294 4108
3295 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4109 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3296 4110
3297 EV_FREQUENT_CHECK; 4111 EV_FREQUENT_CHECK;
3298} 4112}
3299 4113
3300void noinline 4114ecb_noinline
4115void
3301ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4116ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3302{ 4117{
3303 if (expect_false (ev_is_active (w))) 4118 if (ecb_expect_false (ev_is_active (w)))
3304 return; 4119 return;
3305 4120
3306 ev_at (w) += mn_now; 4121 ev_at (w) += mn_now;
3307 4122
3308 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4123 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3309 4124
3310 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
3311 4126
3312 ++timercnt; 4127 ++timercnt;
3313 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4128 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3314 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4129 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3315 ANHE_w (timers [ev_active (w)]) = (WT)w; 4130 ANHE_w (timers [ev_active (w)]) = (WT)w;
3316 ANHE_at_cache (timers [ev_active (w)]); 4131 ANHE_at_cache (timers [ev_active (w)]);
3317 upheap (timers, ev_active (w)); 4132 upheap (timers, ev_active (w));
3318 4133
3319 EV_FREQUENT_CHECK; 4134 EV_FREQUENT_CHECK;
3320 4135
3321 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4136 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3322} 4137}
3323 4138
3324void noinline 4139ecb_noinline
4140void
3325ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4141ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3326{ 4142{
3327 clear_pending (EV_A_ (W)w); 4143 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 4144 if (ecb_expect_false (!ev_is_active (w)))
3329 return; 4145 return;
3330 4146
3331 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
3332 4148
3333 { 4149 {
… …
3335 4151
3336 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4152 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3337 4153
3338 --timercnt; 4154 --timercnt;
3339 4155
3340 if (expect_true (active < timercnt + HEAP0)) 4156 if (ecb_expect_true (active < timercnt + HEAP0))
3341 { 4157 {
3342 timers [active] = timers [timercnt + HEAP0]; 4158 timers [active] = timers [timercnt + HEAP0];
3343 adjustheap (timers, timercnt, active); 4159 adjustheap (timers, timercnt, active);
3344 } 4160 }
3345 } 4161 }
… …
3349 ev_stop (EV_A_ (W)w); 4165 ev_stop (EV_A_ (W)w);
3350 4166
3351 EV_FREQUENT_CHECK; 4167 EV_FREQUENT_CHECK;
3352} 4168}
3353 4169
3354void noinline 4170ecb_noinline
4171void
3355ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4172ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3356{ 4173{
3357 EV_FREQUENT_CHECK; 4174 EV_FREQUENT_CHECK;
3358 4175
3359 clear_pending (EV_A_ (W)w); 4176 clear_pending (EV_A_ (W)w);
3360 4177
… …
3377 4194
3378 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
3379} 4196}
3380 4197
3381ev_tstamp 4198ev_tstamp
3382ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4199ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3383{ 4200{
3384 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4201 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3385} 4202}
3386 4203
3387#if EV_PERIODIC_ENABLE 4204#if EV_PERIODIC_ENABLE
3388void noinline 4205ecb_noinline
4206void
3389ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4207ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3390{ 4208{
3391 if (expect_false (ev_is_active (w))) 4209 if (ecb_expect_false (ev_is_active (w)))
3392 return; 4210 return;
3393 4211
3394 if (w->reschedule_cb) 4212 if (w->reschedule_cb)
3395 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4213 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3396 else if (w->interval) 4214 else if (w->interval)
… …
3403 4221
3404 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
3405 4223
3406 ++periodiccnt; 4224 ++periodiccnt;
3407 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4225 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3408 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4226 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3409 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4227 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3410 ANHE_at_cache (periodics [ev_active (w)]); 4228 ANHE_at_cache (periodics [ev_active (w)]);
3411 upheap (periodics, ev_active (w)); 4229 upheap (periodics, ev_active (w));
3412 4230
3413 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
3414 4232
3415 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4233 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3416} 4234}
3417 4235
3418void noinline 4236ecb_noinline
4237void
3419ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4238ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3420{ 4239{
3421 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
3422 if (expect_false (!ev_is_active (w))) 4241 if (ecb_expect_false (!ev_is_active (w)))
3423 return; 4242 return;
3424 4243
3425 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
3426 4245
3427 { 4246 {
… …
3429 4248
3430 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4249 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3431 4250
3432 --periodiccnt; 4251 --periodiccnt;
3433 4252
3434 if (expect_true (active < periodiccnt + HEAP0)) 4253 if (ecb_expect_true (active < periodiccnt + HEAP0))
3435 { 4254 {
3436 periodics [active] = periodics [periodiccnt + HEAP0]; 4255 periodics [active] = periodics [periodiccnt + HEAP0];
3437 adjustheap (periodics, periodiccnt, active); 4256 adjustheap (periodics, periodiccnt, active);
3438 } 4257 }
3439 } 4258 }
… …
3441 ev_stop (EV_A_ (W)w); 4260 ev_stop (EV_A_ (W)w);
3442 4261
3443 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
3444} 4263}
3445 4264
3446void noinline 4265ecb_noinline
4266void
3447ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4267ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3448{ 4268{
3449 /* TODO: use adjustheap and recalculation */ 4269 /* TODO: use adjustheap and recalculation */
3450 ev_periodic_stop (EV_A_ w); 4270 ev_periodic_stop (EV_A_ w);
3451 ev_periodic_start (EV_A_ w); 4271 ev_periodic_start (EV_A_ w);
3452} 4272}
… …
3456# define SA_RESTART 0 4276# define SA_RESTART 0
3457#endif 4277#endif
3458 4278
3459#if EV_SIGNAL_ENABLE 4279#if EV_SIGNAL_ENABLE
3460 4280
3461void noinline 4281ecb_noinline
4282void
3462ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4283ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3463{ 4284{
3464 if (expect_false (ev_is_active (w))) 4285 if (ecb_expect_false (ev_is_active (w)))
3465 return; 4286 return;
3466 4287
3467 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4288 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3468 4289
3469#if EV_MULTIPLICITY 4290#if EV_MULTIPLICITY
3470 assert (("libev: a signal must not be attached to two different loops", 4291 assert (("libev: a signal must not be attached to two different loops",
3471 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4292 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3472 4293
3473 signals [w->signum - 1].loop = EV_A; 4294 signals [w->signum - 1].loop = EV_A;
4295 ECB_MEMORY_FENCE_RELEASE;
3474#endif 4296#endif
3475 4297
3476 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
3477 4299
3478#if EV_USE_SIGNALFD 4300#if EV_USE_SIGNALFD
… …
3537 } 4359 }
3538 4360
3539 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
3540} 4362}
3541 4363
3542void noinline 4364ecb_noinline
4365void
3543ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4366ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3544{ 4367{
3545 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
3546 if (expect_false (!ev_is_active (w))) 4369 if (ecb_expect_false (!ev_is_active (w)))
3547 return; 4370 return;
3548 4371
3549 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3550 4373
3551 wlist_del (&signals [w->signum - 1].head, (WL)w); 4374 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3579#endif 4402#endif
3580 4403
3581#if EV_CHILD_ENABLE 4404#if EV_CHILD_ENABLE
3582 4405
3583void 4406void
3584ev_child_start (EV_P_ ev_child *w) EV_THROW 4407ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3585{ 4408{
3586#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
3587 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4410 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3588#endif 4411#endif
3589 if (expect_false (ev_is_active (w))) 4412 if (ecb_expect_false (ev_is_active (w)))
3590 return; 4413 return;
3591 4414
3592 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
3593 4416
3594 ev_start (EV_A_ (W)w, 1); 4417 ev_start (EV_A_ (W)w, 1);
… …
3596 4419
3597 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
3598} 4421}
3599 4422
3600void 4423void
3601ev_child_stop (EV_P_ ev_child *w) EV_THROW 4424ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3602{ 4425{
3603 clear_pending (EV_A_ (W)w); 4426 clear_pending (EV_A_ (W)w);
3604 if (expect_false (!ev_is_active (w))) 4427 if (ecb_expect_false (!ev_is_active (w)))
3605 return; 4428 return;
3606 4429
3607 EV_FREQUENT_CHECK; 4430 EV_FREQUENT_CHECK;
3608 4431
3609 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4432 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3623 4446
3624#define DEF_STAT_INTERVAL 5.0074891 4447#define DEF_STAT_INTERVAL 5.0074891
3625#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4448#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3626#define MIN_STAT_INTERVAL 0.1074891 4449#define MIN_STAT_INTERVAL 0.1074891
3627 4450
3628static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4451ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3629 4452
3630#if EV_USE_INOTIFY 4453#if EV_USE_INOTIFY
3631 4454
3632/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4455/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3633# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4456# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3634 4457
3635static void noinline 4458ecb_noinline
4459static void
3636infy_add (EV_P_ ev_stat *w) 4460infy_add (EV_P_ ev_stat *w)
3637{ 4461{
3638 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); 4462 w->wd = inotify_add_watch (fs_fd, w->path,
4463 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4464 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4465 | IN_DONT_FOLLOW | IN_MASK_ADD);
3639 4466
3640 if (w->wd >= 0) 4467 if (w->wd >= 0)
3641 { 4468 {
3642 struct statfs sfs; 4469 struct statfs sfs;
3643 4470
… …
3647 4474
3648 if (!fs_2625) 4475 if (!fs_2625)
3649 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4476 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3650 else if (!statfs (w->path, &sfs) 4477 else if (!statfs (w->path, &sfs)
3651 && (sfs.f_type == 0x1373 /* devfs */ 4478 && (sfs.f_type == 0x1373 /* devfs */
4479 || sfs.f_type == 0x4006 /* fat */
4480 || sfs.f_type == 0x4d44 /* msdos */
3652 || sfs.f_type == 0xEF53 /* ext2/3 */ 4481 || sfs.f_type == 0xEF53 /* ext2/3 */
4482 || sfs.f_type == 0x72b6 /* jffs2 */
4483 || sfs.f_type == 0x858458f6 /* ramfs */
4484 || sfs.f_type == 0x5346544e /* ntfs */
3653 || sfs.f_type == 0x3153464a /* jfs */ 4485 || sfs.f_type == 0x3153464a /* jfs */
4486 || sfs.f_type == 0x9123683e /* btrfs */
3654 || sfs.f_type == 0x52654973 /* reiser3 */ 4487 || sfs.f_type == 0x52654973 /* reiser3 */
3655 || sfs.f_type == 0x01021994 /* tempfs */ 4488 || sfs.f_type == 0x01021994 /* tmpfs */
3656 || sfs.f_type == 0x58465342 /* xfs */)) 4489 || sfs.f_type == 0x58465342 /* xfs */))
3657 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4490 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3658 else 4491 else
3659 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4492 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3660 } 4493 }
… …
3695 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4528 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3696 ev_timer_again (EV_A_ &w->timer); 4529 ev_timer_again (EV_A_ &w->timer);
3697 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4530 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3698} 4531}
3699 4532
3700static void noinline 4533ecb_noinline
4534static void
3701infy_del (EV_P_ ev_stat *w) 4535infy_del (EV_P_ ev_stat *w)
3702{ 4536{
3703 int slot; 4537 int slot;
3704 int wd = w->wd; 4538 int wd = w->wd;
3705 4539
… …
3712 4546
3713 /* remove this watcher, if others are watching it, they will rearm */ 4547 /* remove this watcher, if others are watching it, they will rearm */
3714 inotify_rm_watch (fs_fd, wd); 4548 inotify_rm_watch (fs_fd, wd);
3715} 4549}
3716 4550
3717static void noinline 4551ecb_noinline
4552static void
3718infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4553infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3719{ 4554{
3720 if (slot < 0) 4555 if (slot < 0)
3721 /* overflow, need to check for all hash slots */ 4556 /* overflow, need to check for all hash slots */
3722 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4557 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3758 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4593 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3759 ofs += sizeof (struct inotify_event) + ev->len; 4594 ofs += sizeof (struct inotify_event) + ev->len;
3760 } 4595 }
3761} 4596}
3762 4597
3763inline_size void ecb_cold 4598inline_size ecb_cold
4599void
3764ev_check_2625 (EV_P) 4600ev_check_2625 (EV_P)
3765{ 4601{
3766 /* kernels < 2.6.25 are borked 4602 /* kernels < 2.6.25 are borked
3767 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4603 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3768 */ 4604 */
… …
3858#else 4694#else
3859# define EV_LSTAT(p,b) lstat (p, b) 4695# define EV_LSTAT(p,b) lstat (p, b)
3860#endif 4696#endif
3861 4697
3862void 4698void
3863ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4699ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3864{ 4700{
3865 if (lstat (w->path, &w->attr) < 0) 4701 if (lstat (w->path, &w->attr) < 0)
3866 w->attr.st_nlink = 0; 4702 w->attr.st_nlink = 0;
3867 else if (!w->attr.st_nlink) 4703 else if (!w->attr.st_nlink)
3868 w->attr.st_nlink = 1; 4704 w->attr.st_nlink = 1;
3869} 4705}
3870 4706
3871static void noinline 4707ecb_noinline
4708static void
3872stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4709stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3873{ 4710{
3874 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4711 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3875 4712
3876 ev_statdata prev = w->attr; 4713 ev_statdata prev = w->attr;
… …
3907 ev_feed_event (EV_A_ w, EV_STAT); 4744 ev_feed_event (EV_A_ w, EV_STAT);
3908 } 4745 }
3909} 4746}
3910 4747
3911void 4748void
3912ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4749ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3913{ 4750{
3914 if (expect_false (ev_is_active (w))) 4751 if (ecb_expect_false (ev_is_active (w)))
3915 return; 4752 return;
3916 4753
3917 ev_stat_stat (EV_A_ w); 4754 ev_stat_stat (EV_A_ w);
3918 4755
3919 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4756 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3938 4775
3939 EV_FREQUENT_CHECK; 4776 EV_FREQUENT_CHECK;
3940} 4777}
3941 4778
3942void 4779void
3943ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4780ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3944{ 4781{
3945 clear_pending (EV_A_ (W)w); 4782 clear_pending (EV_A_ (W)w);
3946 if (expect_false (!ev_is_active (w))) 4783 if (ecb_expect_false (!ev_is_active (w)))
3947 return; 4784 return;
3948 4785
3949 EV_FREQUENT_CHECK; 4786 EV_FREQUENT_CHECK;
3950 4787
3951#if EV_USE_INOTIFY 4788#if EV_USE_INOTIFY
… …
3964} 4801}
3965#endif 4802#endif
3966 4803
3967#if EV_IDLE_ENABLE 4804#if EV_IDLE_ENABLE
3968void 4805void
3969ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4806ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3970{ 4807{
3971 if (expect_false (ev_is_active (w))) 4808 if (ecb_expect_false (ev_is_active (w)))
3972 return; 4809 return;
3973 4810
3974 pri_adjust (EV_A_ (W)w); 4811 pri_adjust (EV_A_ (W)w);
3975 4812
3976 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
… …
3979 int active = ++idlecnt [ABSPRI (w)]; 4816 int active = ++idlecnt [ABSPRI (w)];
3980 4817
3981 ++idleall; 4818 ++idleall;
3982 ev_start (EV_A_ (W)w, active); 4819 ev_start (EV_A_ (W)w, active);
3983 4820
3984 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4821 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3985 idles [ABSPRI (w)][active - 1] = w; 4822 idles [ABSPRI (w)][active - 1] = w;
3986 } 4823 }
3987 4824
3988 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
3989} 4826}
3990 4827
3991void 4828void
3992ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4829ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3993{ 4830{
3994 clear_pending (EV_A_ (W)w); 4831 clear_pending (EV_A_ (W)w);
3995 if (expect_false (!ev_is_active (w))) 4832 if (ecb_expect_false (!ev_is_active (w)))
3996 return; 4833 return;
3997 4834
3998 EV_FREQUENT_CHECK; 4835 EV_FREQUENT_CHECK;
3999 4836
4000 { 4837 {
… …
4011} 4848}
4012#endif 4849#endif
4013 4850
4014#if EV_PREPARE_ENABLE 4851#if EV_PREPARE_ENABLE
4015void 4852void
4016ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4853ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4017{ 4854{
4018 if (expect_false (ev_is_active (w))) 4855 if (ecb_expect_false (ev_is_active (w)))
4019 return; 4856 return;
4020 4857
4021 EV_FREQUENT_CHECK; 4858 EV_FREQUENT_CHECK;
4022 4859
4023 ev_start (EV_A_ (W)w, ++preparecnt); 4860 ev_start (EV_A_ (W)w, ++preparecnt);
4024 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4861 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4025 prepares [preparecnt - 1] = w; 4862 prepares [preparecnt - 1] = w;
4026 4863
4027 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
4028} 4865}
4029 4866
4030void 4867void
4031ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4868ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4032{ 4869{
4033 clear_pending (EV_A_ (W)w); 4870 clear_pending (EV_A_ (W)w);
4034 if (expect_false (!ev_is_active (w))) 4871 if (ecb_expect_false (!ev_is_active (w)))
4035 return; 4872 return;
4036 4873
4037 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
4038 4875
4039 { 4876 {
… …
4049} 4886}
4050#endif 4887#endif
4051 4888
4052#if EV_CHECK_ENABLE 4889#if EV_CHECK_ENABLE
4053void 4890void
4054ev_check_start (EV_P_ ev_check *w) EV_THROW 4891ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4055{ 4892{
4056 if (expect_false (ev_is_active (w))) 4893 if (ecb_expect_false (ev_is_active (w)))
4057 return; 4894 return;
4058 4895
4059 EV_FREQUENT_CHECK; 4896 EV_FREQUENT_CHECK;
4060 4897
4061 ev_start (EV_A_ (W)w, ++checkcnt); 4898 ev_start (EV_A_ (W)w, ++checkcnt);
4062 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4899 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4063 checks [checkcnt - 1] = w; 4900 checks [checkcnt - 1] = w;
4064 4901
4065 EV_FREQUENT_CHECK; 4902 EV_FREQUENT_CHECK;
4066} 4903}
4067 4904
4068void 4905void
4069ev_check_stop (EV_P_ ev_check *w) EV_THROW 4906ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4070{ 4907{
4071 clear_pending (EV_A_ (W)w); 4908 clear_pending (EV_A_ (W)w);
4072 if (expect_false (!ev_is_active (w))) 4909 if (ecb_expect_false (!ev_is_active (w)))
4073 return; 4910 return;
4074 4911
4075 EV_FREQUENT_CHECK; 4912 EV_FREQUENT_CHECK;
4076 4913
4077 { 4914 {
… …
4086 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
4087} 4924}
4088#endif 4925#endif
4089 4926
4090#if EV_EMBED_ENABLE 4927#if EV_EMBED_ENABLE
4091void noinline 4928ecb_noinline
4929void
4092ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4930ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4093{ 4931{
4094 ev_run (w->other, EVRUN_NOWAIT); 4932 ev_run (w->other, EVRUN_NOWAIT);
4095} 4933}
4096 4934
4097static void 4935static void
… …
4145 ev_idle_stop (EV_A_ idle); 4983 ev_idle_stop (EV_A_ idle);
4146} 4984}
4147#endif 4985#endif
4148 4986
4149void 4987void
4150ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4988ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4151{ 4989{
4152 if (expect_false (ev_is_active (w))) 4990 if (ecb_expect_false (ev_is_active (w)))
4153 return; 4991 return;
4154 4992
4155 { 4993 {
4156 EV_P = w->other; 4994 EV_P = w->other;
4157 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4995 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4176 5014
4177 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
4178} 5016}
4179 5017
4180void 5018void
4181ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5019ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4182{ 5020{
4183 clear_pending (EV_A_ (W)w); 5021 clear_pending (EV_A_ (W)w);
4184 if (expect_false (!ev_is_active (w))) 5022 if (ecb_expect_false (!ev_is_active (w)))
4185 return; 5023 return;
4186 5024
4187 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
4188 5026
4189 ev_io_stop (EV_A_ &w->io); 5027 ev_io_stop (EV_A_ &w->io);
… …
4196} 5034}
4197#endif 5035#endif
4198 5036
4199#if EV_FORK_ENABLE 5037#if EV_FORK_ENABLE
4200void 5038void
4201ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5039ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4202{ 5040{
4203 if (expect_false (ev_is_active (w))) 5041 if (ecb_expect_false (ev_is_active (w)))
4204 return; 5042 return;
4205 5043
4206 EV_FREQUENT_CHECK; 5044 EV_FREQUENT_CHECK;
4207 5045
4208 ev_start (EV_A_ (W)w, ++forkcnt); 5046 ev_start (EV_A_ (W)w, ++forkcnt);
4209 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5047 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4210 forks [forkcnt - 1] = w; 5048 forks [forkcnt - 1] = w;
4211 5049
4212 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4213} 5051}
4214 5052
4215void 5053void
4216ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5054ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4217{ 5055{
4218 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
4219 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
4220 return; 5058 return;
4221 5059
4222 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4223 5061
4224 { 5062 {
… …
4234} 5072}
4235#endif 5073#endif
4236 5074
4237#if EV_CLEANUP_ENABLE 5075#if EV_CLEANUP_ENABLE
4238void 5076void
4239ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5077ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4240{ 5078{
4241 if (expect_false (ev_is_active (w))) 5079 if (ecb_expect_false (ev_is_active (w)))
4242 return; 5080 return;
4243 5081
4244 EV_FREQUENT_CHECK; 5082 EV_FREQUENT_CHECK;
4245 5083
4246 ev_start (EV_A_ (W)w, ++cleanupcnt); 5084 ev_start (EV_A_ (W)w, ++cleanupcnt);
4247 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5085 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4248 cleanups [cleanupcnt - 1] = w; 5086 cleanups [cleanupcnt - 1] = w;
4249 5087
4250 /* cleanup watchers should never keep a refcount on the loop */ 5088 /* cleanup watchers should never keep a refcount on the loop */
4251 ev_unref (EV_A); 5089 ev_unref (EV_A);
4252 EV_FREQUENT_CHECK; 5090 EV_FREQUENT_CHECK;
4253} 5091}
4254 5092
4255void 5093void
4256ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5094ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4257{ 5095{
4258 clear_pending (EV_A_ (W)w); 5096 clear_pending (EV_A_ (W)w);
4259 if (expect_false (!ev_is_active (w))) 5097 if (ecb_expect_false (!ev_is_active (w)))
4260 return; 5098 return;
4261 5099
4262 EV_FREQUENT_CHECK; 5100 EV_FREQUENT_CHECK;
4263 ev_ref (EV_A); 5101 ev_ref (EV_A);
4264 5102
… …
4275} 5113}
4276#endif 5114#endif
4277 5115
4278#if EV_ASYNC_ENABLE 5116#if EV_ASYNC_ENABLE
4279void 5117void
4280ev_async_start (EV_P_ ev_async *w) EV_THROW 5118ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4281{ 5119{
4282 if (expect_false (ev_is_active (w))) 5120 if (ecb_expect_false (ev_is_active (w)))
4283 return; 5121 return;
4284 5122
4285 w->sent = 0; 5123 w->sent = 0;
4286 5124
4287 evpipe_init (EV_A); 5125 evpipe_init (EV_A);
4288 5126
4289 EV_FREQUENT_CHECK; 5127 EV_FREQUENT_CHECK;
4290 5128
4291 ev_start (EV_A_ (W)w, ++asynccnt); 5129 ev_start (EV_A_ (W)w, ++asynccnt);
4292 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5130 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4293 asyncs [asynccnt - 1] = w; 5131 asyncs [asynccnt - 1] = w;
4294 5132
4295 EV_FREQUENT_CHECK; 5133 EV_FREQUENT_CHECK;
4296} 5134}
4297 5135
4298void 5136void
4299ev_async_stop (EV_P_ ev_async *w) EV_THROW 5137ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4300{ 5138{
4301 clear_pending (EV_A_ (W)w); 5139 clear_pending (EV_A_ (W)w);
4302 if (expect_false (!ev_is_active (w))) 5140 if (ecb_expect_false (!ev_is_active (w)))
4303 return; 5141 return;
4304 5142
4305 EV_FREQUENT_CHECK; 5143 EV_FREQUENT_CHECK;
4306 5144
4307 { 5145 {
… …
4315 5153
4316 EV_FREQUENT_CHECK; 5154 EV_FREQUENT_CHECK;
4317} 5155}
4318 5156
4319void 5157void
4320ev_async_send (EV_P_ ev_async *w) EV_THROW 5158ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4321{ 5159{
4322 w->sent = 1; 5160 w->sent = 1;
4323 evpipe_write (EV_A_ &async_pending); 5161 evpipe_write (EV_A_ &async_pending);
4324} 5162}
4325#endif 5163#endif
… …
4362 5200
4363 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5201 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4364} 5202}
4365 5203
4366void 5204void
4367ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5205ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4368{ 5206{
4369 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5207 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4370
4371 if (expect_false (!once))
4372 {
4373 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4374 return;
4375 }
4376 5208
4377 once->cb = cb; 5209 once->cb = cb;
4378 once->arg = arg; 5210 once->arg = arg;
4379 5211
4380 ev_init (&once->io, once_cb_io); 5212 ev_init (&once->io, once_cb_io);
… …
4393} 5225}
4394 5226
4395/*****************************************************************************/ 5227/*****************************************************************************/
4396 5228
4397#if EV_WALK_ENABLE 5229#if EV_WALK_ENABLE
4398void ecb_cold 5230ecb_cold
5231void
4399ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5232ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4400{ 5233{
4401 int i, j; 5234 int i, j;
4402 ev_watcher_list *wl, *wn; 5235 ev_watcher_list *wl, *wn;
4403 5236
4404 if (types & (EV_IO | EV_EMBED)) 5237 if (types & (EV_IO | EV_EMBED))

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