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Comparing libev/ev.c (file contents):
Revision 1.437 by root, Tue May 29 21:03:22 2012 UTC vs.
Revision 1.514 by root, Fri Dec 20 05:20:50 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
508 620
509/* 16 bits major, 16 bits minor */ 621/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001 622#define ECB_VERSION 0x00010006
511 623
512#ifdef _WIN32 624#ifdef _WIN32
513 typedef signed char int8_t; 625 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 626 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 627 typedef signed short int16_t;
… …
530 #else 642 #else
531 #define ECB_PTRSIZE 4 643 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t; 644 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t; 645 typedef int32_t intptr_t;
534 #endif 646 #endif
535 typedef intptr_t ptrdiff_t;
536#else 647#else
537 #include <inttypes.h> 648 #include <inttypes.h>
538 #if UINTMAX_MAX > 0xffffffffU 649 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
539 #define ECB_PTRSIZE 8 650 #define ECB_PTRSIZE 8
540 #else 651 #else
541 #define ECB_PTRSIZE 4 652 #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
542 #endif 665 #endif
543#endif 666#endif
544 667
545/* many compilers define _GNUC_ to some versions but then only implement 668/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions, 669 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers. 670 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so. 671 * or so.
549 * 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
550 * 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.
551 */ 674 */
552#ifndef ECB_GCC_VERSION
553 #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__
554 #define ECB_GCC_VERSION(major,minor) 0 676 #define ECB_GCC_VERSION(major,minor) 0
555 #else 677#else
556 #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)))
557 #endif 679#endif
558#endif
559 680
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 681#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
561#define ECB_C99 (__STDC_VERSION__ >= 199901L) 682
562#define ECB_C11 (__STDC_VERSION__ >= 201112L) 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
563#define ECB_CPP (__cplusplus+0) 695#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L) 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
720#endif
566 721
567/*****************************************************************************/ 722/*****************************************************************************/
568 723
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 724/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* 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 */
571 726
572#if ECB_NO_THREADS 727#if ECB_NO_THREADS
573# define ECB_NO_SMP 1 728 #define ECB_NO_SMP 1
574#endif 729#endif
575 730
576#if ECB_NO_SMP 731#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0) 732 #define ECB_MEMORY_FENCE do { } while (0)
578#endif 733#endif
579 734
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 */
742#endif
743
580#ifndef ECB_MEMORY_FENCE 744#ifndef ECB_MEMORY_FENCE
581 #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")
582 #if __i386 || __i386__ 747 #if __i386 || __i386__
583 #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")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 749 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 750 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 751 #elif ECB_GCC_AMD64
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 755 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #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 */
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 764 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 765 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
766 || defined __ARM_ARCH_6T2__
594 #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")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 768 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 769 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 770 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__ 771 #elif __aarch64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
773 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
599 #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")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 775 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 776 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__ 777 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #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. */
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 782 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
606 #elif defined __alpha__ 783 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 784 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__ 785 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 786 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 787 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__ 788 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 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")
613 #endif 796 #endif
614 #endif 797 #endif
615#endif 798#endif
616 799
617#ifndef ECB_MEMORY_FENCE 800#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7) 801 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */ 802 /* see comment below (stdatomic.h) about the C11 memory model. */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 803 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic) 804 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
622 /* see above */ 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. */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 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
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 815 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize () 816 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 817 #elif _MSC_VER >= 1500 /* VC++ 2008 */
627 /*#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()
628 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 823 #elif _MSC_VER >= 1400 /* VC++ 2005 */
629 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 824 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
630 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 825 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
631 #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 */
632 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 827 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
633 #elif defined _WIN32 828 #elif defined _WIN32
634 #include <WinNT.h> 829 #include <WinNT.h>
635 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 830 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
636 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 831 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
637 #include <mbarrier.h> 832 #include <mbarrier.h>
638 #define ECB_MEMORY_FENCE __machine_rw_barrier () 833 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
639 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 834 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
640 #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 ()
641 #elif __xlC__ 837 #elif __xlC__
642 #define ECB_MEMORY_FENCE __sync () 838 #define ECB_MEMORY_FENCE __sync ()
643 #endif 839 #endif
644#endif 840#endif
645 841
646#ifndef ECB_MEMORY_FENCE 842#ifndef ECB_MEMORY_FENCE
647 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 843 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
648 /* we assume that these memory fences work on all variables/all memory accesses, */ 844 /* we assume that these memory fences work on all variables/all memory accesses, */
649 /* not just C11 atomics and atomic accesses */ 845 /* not just C11 atomics and atomic accesses */
650 #include <stdatomic.h> 846 #include <stdatomic.h>
651 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
652 /* simple barrier semantics. That means we need to take out thor's hammer. */
653 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 847 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
654 #endif 848 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
849 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
655 #endif 850 #endif
656#endif 851#endif
657 852
658#ifndef ECB_MEMORY_FENCE 853#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS 854 #if !ECB_AVOID_PTHREADS
… …
679 874
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 875#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 876 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif 877#endif
683 878
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
684/*****************************************************************************/ 883/*****************************************************************************/
685 884
686#if __cplusplus 885#if ECB_CPP
687 #define ecb_inline static inline 886 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5) 887#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__ 888 #define ecb_inline static __inline__
690#elif ECB_C99 889#elif ECB_C99
691 #define ecb_inline static inline 890 #define ecb_inline static inline
… …
705 904
706#define ECB_CONCAT_(a, b) a ## b 905#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 906#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a 907#define ECB_STRINGIFY_(a) # a
709#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))
710 910
711#define ecb_function_ ecb_inline 911#define ecb_function_ ecb_inline
712 912
713#if ECB_GCC_VERSION(3,1) 913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
714 #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)
715 #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)
716 #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)
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 936 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else 937#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality) 938 #define ecb_prefetch(addr,rw,locality)
723#endif 939#endif
724 940
725/* no emulation for ecb_decltype */ 941/* no emulation for ecb_decltype */
726#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; };
727 #define ecb_decltype(x) __decltype(x) 945 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
728#elif ECB_GCC_VERSION(3,0) 946#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
729 #define ecb_decltype(x) __typeof(x) 947 #define ecb_decltype(x) __typeof__ (x)
730#endif 948#endif
731 949
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
732#define ecb_noinline ecb_attribute ((__noinline__)) 967 #define ecb_noinline ecb_attribute ((__noinline__))
968#endif
969
733#define ecb_unused ecb_attribute ((__unused__)) 970#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__)) 971#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__)) 972#define ecb_pure ecb_attribute ((__pure__))
736 973
737#if ECB_C11 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 */
738 #define ecb_noreturn _Noreturn 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)
739#else 982#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__)) 983 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif 984#endif
742 985
743#if ECB_GCC_VERSION(4,3) 986#if ECB_GCC_VERSION(4,3)
… …
758/* for compatibility to the rest of the world */ 1001/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr) 1002#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr) 1003#define ecb_unlikely(expr) ecb_expect_false (expr)
761 1004
762/* count trailing zero bits and count # of one bits */ 1005/* count trailing zero bits and count # of one bits */
763#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))
764 /* 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 */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1011 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1012 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x) 1013 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x) 1014 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x) 1015 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */ 1016 /* no popcountll */
771#else 1017#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1018 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
773 ecb_function_ int 1019 ecb_function_ ecb_const int
774 ecb_ctz32 (uint32_t x) 1020 ecb_ctz32 (uint32_t x)
775 { 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
776 int r = 0; 1027 int r = 0;
777 1028
778 x &= ~x + 1; /* this isolates the lowest bit */ 1029 x &= ~x + 1; /* this isolates the lowest bit */
779 1030
780#if ECB_branchless_on_i386 1031#if ECB_branchless_on_i386
… …
790 if (x & 0xff00ff00) r += 8; 1041 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16; 1042 if (x & 0xffff0000) r += 16;
792#endif 1043#endif
793 1044
794 return r; 1045 return r;
1046#endif
795 } 1047 }
796 1048
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1049 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
798 ecb_function_ int 1050 ecb_function_ ecb_const int
799 ecb_ctz64 (uint64_t x) 1051 ecb_ctz64 (uint64_t x)
800 { 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
801 int shift = x & 0xffffffffU ? 0 : 32; 1058 int shift = x & 0xffffffff ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift; 1059 return ecb_ctz32 (x >> shift) + shift;
1060#endif
803 } 1061 }
804 1062
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1063 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
806 ecb_function_ int 1064 ecb_function_ ecb_const int
807 ecb_popcount32 (uint32_t x) 1065 ecb_popcount32 (uint32_t x)
808 { 1066 {
809 x -= (x >> 1) & 0x55555555; 1067 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1068 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f; 1069 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101; 1070 x *= 0x01010101;
813 1071
814 return x >> 24; 1072 return x >> 24;
815 } 1073 }
816 1074
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1075 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
818 ecb_function_ int ecb_ld32 (uint32_t x) 1076 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
819 { 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
820 int r = 0; 1083 int r = 0;
821 1084
822 if (x >> 16) { x >>= 16; r += 16; } 1085 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; } 1086 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; } 1087 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; } 1088 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; } 1089 if (x >> 1) { r += 1; }
827 1090
828 return r; 1091 return r;
1092#endif
829 } 1093 }
830 1094
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
832 ecb_function_ int ecb_ld64 (uint64_t x) 1096 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
833 { 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
834 int r = 0; 1103 int r = 0;
835 1104
836 if (x >> 32) { x >>= 32; r += 32; } 1105 if (x >> 32) { x >>= 32; r += 32; }
837 1106
838 return r + ecb_ld32 (x); 1107 return r + ecb_ld32 (x);
1108#endif
839 } 1109 }
840#endif 1110#endif
841 1111
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1112ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1113ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1114ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1115ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846 1116
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1117ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1118ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
849{ 1119{
850 return ( (x * 0x0802U & 0x22110U) 1120 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1121 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852} 1122}
853 1123
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1124ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1125ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
856{ 1126{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1127 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1128 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1129 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8); 1130 x = ( x >> 8 ) | ( x << 8);
861 1131
862 return x; 1132 return x;
863} 1133}
864 1134
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1135ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1136ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
867{ 1137{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1138 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1139 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1140 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1141 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
874 return x; 1144 return x;
875} 1145}
876 1146
877/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1147/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */ 1148/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1149ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
880ecb_function_ int 1150ecb_function_ ecb_const int
881ecb_popcount64 (uint64_t x) 1151ecb_popcount64 (uint64_t x)
882{ 1152{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1153 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884} 1154}
885 1155
886ecb_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);
887ecb_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);
888ecb_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);
889ecb_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);
890ecb_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);
891ecb_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);
892ecb_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);
893ecb_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);
894 1164
895ecb_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); }
896ecb_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); }
897ecb_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); }
898ecb_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); }
899ecb_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); }
900ecb_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); }
901ecb_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); }
902ecb_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); }
903 1173
904#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
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1178 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1179 #endif
906 #define ecb_bswap32(x) __builtin_bswap32 (x) 1180 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #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)))
908#else 1187#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1188 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
910 ecb_function_ uint16_t 1189 ecb_function_ ecb_const uint16_t
911 ecb_bswap16 (uint16_t x) 1190 ecb_bswap16 (uint16_t x)
912 { 1191 {
913 return ecb_rotl16 (x, 8); 1192 return ecb_rotl16 (x, 8);
914 } 1193 }
915 1194
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1195 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
917 ecb_function_ uint32_t 1196 ecb_function_ ecb_const uint32_t
918 ecb_bswap32 (uint32_t x) 1197 ecb_bswap32 (uint32_t x)
919 { 1198 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1199 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 } 1200 }
922 1201
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1202 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
924 ecb_function_ uint64_t 1203 ecb_function_ ecb_const uint64_t
925 ecb_bswap64 (uint64_t x) 1204 ecb_bswap64 (uint64_t x)
926 { 1205 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1206 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 } 1207 }
929#endif 1208#endif
930 1209
931#if ECB_GCC_VERSION(4,5) 1210#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
932 #define ecb_unreachable() __builtin_unreachable () 1211 #define ecb_unreachable() __builtin_unreachable ()
933#else 1212#else
934 /* 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 :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1214 ecb_inline ecb_noreturn void ecb_unreachable (void);
936 ecb_inline void ecb_unreachable (void) { } 1215 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
937#endif 1216#endif
938 1217
939/* try to tell the compiler that some condition is definitely true */ 1218/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1219#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
941 1220
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1221ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
943ecb_inline unsigned char 1222ecb_inline ecb_const uint32_t
944ecb_byteorder_helper (void) 1223ecb_byteorder_helper (void)
945{ 1224{
946 const uint32_t u = 0x11223344; 1225 /* the union code still generates code under pressure in gcc, */
947 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
948} 1247}
949 1248
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1249ecb_inline ecb_const ecb_bool ecb_big_endian (void);
951ecb_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; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1251ecb_inline ecb_const ecb_bool ecb_little_endian (void);
953ecb_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; }
954 1253
955#if ECB_GCC_VERSION(3,0) || ECB_C99 1254#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #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))
957#else 1256#else
958 #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)))
959#endif 1258#endif
960 1259
961#if __cplusplus 1260#if ECB_CPP
962 template<typename T> 1261 template<typename T>
963 static inline T ecb_div_rd (T val, T div) 1262 static inline T ecb_div_rd (T val, T div)
964 { 1263 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1264 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 } 1265 }
… …
983 } 1282 }
984#else 1283#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1284 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif 1285#endif
987 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
988#endif 1592#endif
989 1593
990/* ECB.H END */ 1594/* ECB.H END */
991 1595
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1596#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* 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
994 * 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
995 * 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
996 * libev, in which cases the memory fences become nops. 1600 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread, 1601 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences. 1602 * which will then provide the memory fences.
999 */ 1603 */
1000# error "memory fences not defined for your architecture, please report" 1604# error "memory fences not defined for your architecture, please report"
… …
1004# define ECB_MEMORY_FENCE do { } while (0) 1608# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1609# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1610# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif 1611#endif
1008 1612
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
1013#define inline_size ecb_inline 1613#define inline_size ecb_inline
1014 1614
1015#if EV_FEATURE_CODE 1615#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline 1616# define inline_speed ecb_inline
1017#else 1617#else
1018# define inline_speed static noinline 1618# define inline_speed ecb_noinline static
1019#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/*****************************************************************************/
1020 1686
1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1022 1688
1023#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
1024# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
1025#else 1691#else
1026# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1027#endif 1693#endif
1028 1694
1029#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
1030#define EMPTY2(a,b) /* used to suppress some warnings */
1031 1696
1032typedef ev_watcher *W; 1697typedef ev_watcher *W;
1033typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
1034typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
1035 1700
… …
1060# include "ev_win32.c" 1725# include "ev_win32.c"
1061#endif 1726#endif
1062 1727
1063/*****************************************************************************/ 1728/*****************************************************************************/
1064 1729
1730#if EV_USE_LINUXAIO
1731# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1732#endif
1733
1065/* define a suitable floor function (only used by periodics atm) */ 1734/* define a suitable floor function (only used by periodics atm) */
1066 1735
1067#if EV_USE_FLOOR 1736#if EV_USE_FLOOR
1068# include <math.h> 1737# include <math.h>
1069# define ev_floor(v) floor (v) 1738# define ev_floor(v) floor (v)
1070#else 1739#else
1071 1740
1072#include <float.h> 1741#include <float.h>
1073 1742
1074/* 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
1075static ev_tstamp noinline 1745static ev_tstamp
1076ev_floor (ev_tstamp v) 1746ev_floor (ev_tstamp v)
1077{ 1747{
1078 /* the choice of shift factor is not terribly important */ 1748 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1749#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1750 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else 1751#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1752 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif 1753#endif
1084 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
1085 /* argument too large for an unsigned long? */ 1763 /* argument too large for an unsigned long? then reduce it */
1086 if (expect_false (v >= shift)) 1764 if (ecb_expect_false (v >= shift))
1087 { 1765 {
1088 ev_tstamp f; 1766 ev_tstamp f;
1089 1767
1090 if (v == v - 1.) 1768 if (v == v - 1.)
1091 return v; /* very large number */ 1769 return v; /* very large numbers are assumed to be integer */
1092 1770
1093 f = shift * ev_floor (v * (1. / shift)); 1771 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f); 1772 return f + ev_floor (v - f);
1095 } 1773 }
1096 1774
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */ 1775 /* fits into an unsigned long */
1106 return (unsigned long)v; 1776 return (unsigned long)v;
1107} 1777}
1108 1778
1109#endif 1779#endif
… …
1112 1782
1113#ifdef __linux 1783#ifdef __linux
1114# include <sys/utsname.h> 1784# include <sys/utsname.h>
1115#endif 1785#endif
1116 1786
1117static unsigned int noinline ecb_cold 1787ecb_noinline ecb_cold
1788static unsigned int
1118ev_linux_version (void) 1789ev_linux_version (void)
1119{ 1790{
1120#ifdef __linux 1791#ifdef __linux
1121 unsigned int v = 0; 1792 unsigned int v = 0;
1122 struct utsname buf; 1793 struct utsname buf;
… …
1151} 1822}
1152 1823
1153/*****************************************************************************/ 1824/*****************************************************************************/
1154 1825
1155#if EV_AVOID_STDIO 1826#if EV_AVOID_STDIO
1156static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
1157ev_printerr (const char *msg) 1829ev_printerr (const char *msg)
1158{ 1830{
1159 write (STDERR_FILENO, msg, strlen (msg)); 1831 write (STDERR_FILENO, msg, strlen (msg));
1160} 1832}
1161#endif 1833#endif
1162 1834
1163static void (*syserr_cb)(const char *msg) EV_THROW; 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1164 1836
1165void ecb_cold 1837ecb_cold
1838void
1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1167{ 1840{
1168 syserr_cb = cb; 1841 syserr_cb = cb;
1169} 1842}
1170 1843
1171static void noinline ecb_cold 1844ecb_noinline ecb_cold
1845static void
1172ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
1173{ 1847{
1174 if (!msg) 1848 if (!msg)
1175 msg = "(libev) system error"; 1849 msg = "(libev) system error";
1176 1850
… …
1189 abort (); 1863 abort ();
1190 } 1864 }
1191} 1865}
1192 1866
1193static void * 1867static void *
1194ev_realloc_emul (void *ptr, long size) EV_THROW 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1195{ 1869{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
1199 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
1200 * 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
1201 * 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.
1202 */ 1875 */
1203 1876
1204 if (size) 1877 if (size)
1205 return realloc (ptr, size); 1878 return realloc (ptr, size);
1206 1879
1207 free (ptr); 1880 free (ptr);
1208 return 0; 1881 return 0;
1209#endif
1210} 1882}
1211 1883
1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1213 1885
1214void ecb_cold 1886ecb_cold
1887void
1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1216{ 1889{
1217 alloc = cb; 1890 alloc = cb;
1218} 1891}
1219 1892
1220inline_speed void * 1893inline_speed void *
… …
1247typedef struct 1920typedef struct
1248{ 1921{
1249 WL head; 1922 WL head;
1250 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
1251 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) */
1252 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 */
1253 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
1254#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
1255 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
1256#endif 1929#endif
1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1258 SOCKET handle; 1931 SOCKET handle;
… …
1312 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
1313 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 */
1314 1987
1315#else 1988#else
1316 1989
1317 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 */
1318 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
1319 #include "ev_vars.h" 1992 #include "ev_vars.h"
1320 #undef VAR 1993 #undef VAR
1321 1994
1322 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
1323 1996
1324#endif 1997#endif
1325 1998
1326#if EV_FEATURE_API 1999#if EV_FEATURE_API
1327# 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)
1328# 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)
1329# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
1330#else 2003#else
1331# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
1332# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
1333# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1337 2010
1338/*****************************************************************************/ 2011/*****************************************************************************/
1339 2012
1340#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
1341ev_tstamp 2014ev_tstamp
1342ev_time (void) EV_THROW 2015ev_time (void) EV_NOEXCEPT
1343{ 2016{
1344#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
1345 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
1346 { 2019 {
1347 struct timespec ts; 2020 struct timespec ts;
1348 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
1349 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
1350 } 2023 }
1351#endif 2024#endif
1352 2025
2026 {
1353 struct timeval tv; 2027 struct timeval tv;
1354 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
1355 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
1356} 2031}
1357#endif 2032#endif
1358 2033
1359inline_size ev_tstamp 2034inline_size ev_tstamp
1360get_clock (void) 2035get_clock (void)
1361{ 2036{
1362#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
1363 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
1364 { 2039 {
1365 struct timespec ts; 2040 struct timespec ts;
1366 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
1367 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
1368 } 2043 }
1369#endif 2044#endif
1370 2045
1371 return ev_time (); 2046 return ev_time ();
1372} 2047}
1373 2048
1374#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
1375ev_tstamp 2050ev_tstamp
1376ev_now (EV_P) EV_THROW 2051ev_now (EV_P) EV_NOEXCEPT
1377{ 2052{
1378 return ev_rt_now; 2053 return ev_rt_now;
1379} 2054}
1380#endif 2055#endif
1381 2056
1382void 2057void
1383ev_sleep (ev_tstamp delay) EV_THROW 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1384{ 2059{
1385 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
1386 { 2061 {
1387#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
1388 struct timespec ts; 2063 struct timespec ts;
1389 2064
1390 EV_TS_SET (ts, delay); 2065 EV_TS_SET (ts, delay);
1391 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
1392#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) */
1393 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1394#else 2071#else
1395 struct timeval tv; 2072 struct timeval tv;
1396 2073
1397 /* 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 */
1398 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1428 } 2105 }
1429 2106
1430 return ncur; 2107 return ncur;
1431} 2108}
1432 2109
1433static void * noinline ecb_cold 2110ecb_noinline ecb_cold
2111static void *
1434array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
1435{ 2113{
1436 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
1437 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
1438} 2116}
1439 2117
2118#define array_needsize_noinit(base,offset,count)
2119
1440#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
1441 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1442 2122
1443#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
1444 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
1445 { \ 2125 { \
1446 int ecb_unused ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
1447 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
1448 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
1449 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
1450 } 2130 }
1451 2131
1452#if 0 2132#if 0
1453#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
1454 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1463 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
1464 2144
1465/*****************************************************************************/ 2145/*****************************************************************************/
1466 2146
1467/* dummy callback for pending events */ 2147/* dummy callback for pending events */
1468static void noinline 2148ecb_noinline
2149static void
1469pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
1470{ 2151{
1471} 2152}
1472 2153
1473void noinline 2154ecb_noinline
2155void
1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1475{ 2157{
1476 W w_ = (W)w; 2158 W w_ = (W)w;
1477 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
1478 2160
1479 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
1480 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
1481 else 2163 else
1482 { 2164 {
1483 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1485 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
1486 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
1487 } 2169 }
1488 2170
1489 pendingpri = NUMPRI - 1; 2171 pendingpri = NUMPRI - 1;
1490} 2172}
1491 2173
1492inline_speed void 2174inline_speed void
1493feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
1494{ 2176{
1495 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1496 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
1497} 2179}
1498 2180
1499inline_size void 2181inline_size void
1500feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
1535inline_speed void 2217inline_speed void
1536fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
1537{ 2219{
1538 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
1539 2221
1540 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
1541 fd_event_nocheck (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
1542} 2224}
1543 2225
1544void 2226void
1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1546{ 2228{
1547 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
1548 fd_event_nocheck (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
1549} 2231}
1550 2232
… …
1587 ev_io *w; 2269 ev_io *w;
1588 2270
1589 unsigned char o_events = anfd->events; 2271 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify; 2272 unsigned char o_reify = anfd->reify;
1591 2273
1592 anfd->reify = 0; 2274 anfd->reify = 0;
1593 2275
1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1595 { 2277 {
1596 anfd->events = 0; 2278 anfd->events = 0;
1597 2279
1598 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)
1599 anfd->events |= (unsigned char)w->events; 2281 anfd->events |= (unsigned char)w->events;
… …
1608 2290
1609 fdchangecnt = 0; 2291 fdchangecnt = 0;
1610} 2292}
1611 2293
1612/* something about the given fd changed */ 2294/* something about the given fd changed */
1613inline_size void 2295inline_size
2296void
1614fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
1615{ 2298{
1616 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
1617 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
1618 2301
1619 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
1620 { 2303 {
1621 ++fdchangecnt; 2304 ++fdchangecnt;
1622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1623 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
1624 } 2307 }
1625} 2308}
1626 2309
1627/* 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 */
1628inline_speed void ecb_cold 2311inline_speed ecb_cold void
1629fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
1630{ 2313{
1631 ev_io *w; 2314 ev_io *w;
1632 2315
1633 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
1636 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);
1637 } 2320 }
1638} 2321}
1639 2322
1640/* check whether the given fd is actually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
1641inline_size int ecb_cold 2324inline_size ecb_cold int
1642fd_valid (int fd) 2325fd_valid (int fd)
1643{ 2326{
1644#ifdef _WIN32 2327#ifdef _WIN32
1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1646#else 2329#else
1647 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
1648#endif 2331#endif
1649} 2332}
1650 2333
1651/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
1652static void noinline ecb_cold 2335ecb_noinline ecb_cold
2336static void
1653fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
1654{ 2338{
1655 int fd; 2339 int fd;
1656 2340
1657 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1659 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1660 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1661} 2345}
1662 2346
1663/* 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 */
1664static void noinline ecb_cold 2348ecb_noinline ecb_cold
2349static void
1665fd_enomem (EV_P) 2350fd_enomem (EV_P)
1666{ 2351{
1667 int fd; 2352 int fd;
1668 2353
1669 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1673 break; 2358 break;
1674 } 2359 }
1675} 2360}
1676 2361
1677/* 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 */
1678static void noinline 2363ecb_noinline
2364static void
1679fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1680{ 2366{
1681 int fd; 2367 int fd;
1682 2368
1683 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1736 ev_tstamp minat; 2422 ev_tstamp minat;
1737 ANHE *minpos; 2423 ANHE *minpos;
1738 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1739 2425
1740 /* find minimum child */ 2426 /* find minimum child */
1741 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1742 { 2428 {
1743 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1744 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));
1745 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));
1746 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));
1747 } 2433 }
1748 else if (pos < E) 2434 else if (pos < E)
1749 { 2435 {
1750 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1751 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));
1752 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));
1753 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));
1754 } 2440 }
1755 else 2441 else
1756 break; 2442 break;
1757 2443
1758 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1766 2452
1767 heap [k] = he; 2453 heap [k] = he;
1768 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1769} 2455}
1770 2456
1771#else /* 4HEAP */ 2457#else /* not 4HEAP */
1772 2458
1773#define HEAP0 1 2459#define HEAP0 1
1774#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1775#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1776 2462
… …
1864 2550
1865/*****************************************************************************/ 2551/*****************************************************************************/
1866 2552
1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1868 2554
1869static void noinline ecb_cold 2555ecb_noinline ecb_cold
2556static void
1870evpipe_init (EV_P) 2557evpipe_init (EV_P)
1871{ 2558{
1872 if (!ev_is_active (&pipe_w)) 2559 if (!ev_is_active (&pipe_w))
1873 { 2560 {
2561 int fds [2];
2562
1874# if EV_USE_EVENTFD 2563# if EV_USE_EVENTFD
2564 fds [0] = -1;
1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2565 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1876 if (evfd < 0 && errno == EINVAL) 2566 if (fds [1] < 0 && errno == EINVAL)
1877 evfd = eventfd (0, 0); 2567 fds [1] = eventfd (0, 0);
1878 2568
1879 if (evfd >= 0) 2569 if (fds [1] < 0)
1880 {
1881 evpipe [0] = -1;
1882 fd_intern (evfd); /* doing it twice doesn't hurt */
1883 ev_io_set (&pipe_w, evfd, EV_READ);
1884 }
1885 else
1886# endif 2570# endif
1887 { 2571 {
1888 while (pipe (evpipe)) 2572 while (pipe (fds))
1889 ev_syserr ("(libev) error creating signal/async pipe"); 2573 ev_syserr ("(libev) error creating signal/async pipe");
1890 2574
1891 fd_intern (evpipe [0]); 2575 fd_intern (fds [0]);
1892 fd_intern (evpipe [1]);
1893 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1894 } 2576 }
1895 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);
1896 ev_io_start (EV_A_ &pipe_w); 2596 ev_io_start (EV_A_ &pipe_w);
1897 ev_unref (EV_A); /* watcher should not keep loop alive */ 2597 ev_unref (EV_A); /* watcher should not keep loop alive */
1898 } 2598 }
1899} 2599}
1900 2600
1901inline_speed void 2601inline_speed void
1902evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1903{ 2603{
1904 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 */
1905 2605
1906 if (expect_true (*flag)) 2606 if (ecb_expect_true (*flag))
1907 return; 2607 return;
1908 2608
1909 *flag = 1; 2609 *flag = 1;
1910 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 */
1911 2611
… …
1921 ECB_MEMORY_FENCE_RELEASE; 2621 ECB_MEMORY_FENCE_RELEASE;
1922 2622
1923 old_errno = errno; /* save errno because write will clobber it */ 2623 old_errno = errno; /* save errno because write will clobber it */
1924 2624
1925#if EV_USE_EVENTFD 2625#if EV_USE_EVENTFD
1926 if (evfd >= 0) 2626 if (evpipe [0] < 0)
1927 { 2627 {
1928 uint64_t counter = 1; 2628 uint64_t counter = 1;
1929 write (evfd, &counter, sizeof (uint64_t)); 2629 write (evpipe [1], &counter, sizeof (uint64_t));
1930 } 2630 }
1931 else 2631 else
1932#endif 2632#endif
1933 { 2633 {
1934#ifdef _WIN32 2634#ifdef _WIN32
1935 WSABUF buf; 2635 WSABUF buf;
1936 DWORD sent; 2636 DWORD sent;
1937 buf.buf = &buf; 2637 buf.buf = (char *)&buf;
1938 buf.len = 1; 2638 buf.len = 1;
1939 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);
1940#else 2640#else
1941 write (evpipe [1], &(evpipe [1]), 1); 2641 write (evpipe [1], &(evpipe [1]), 1);
1942#endif 2642#endif
… …
1954 int i; 2654 int i;
1955 2655
1956 if (revents & EV_READ) 2656 if (revents & EV_READ)
1957 { 2657 {
1958#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1959 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1960 { 2660 {
1961 uint64_t counter; 2661 uint64_t counter;
1962 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1963 } 2663 }
1964 else 2664 else
1965#endif 2665#endif
1966 { 2666 {
1967 char dummy[4]; 2667 char dummy[4];
… …
1988 sig_pending = 0; 2688 sig_pending = 0;
1989 2689
1990 ECB_MEMORY_FENCE; 2690 ECB_MEMORY_FENCE;
1991 2691
1992 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1993 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1994 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1995 } 2695 }
1996#endif 2696#endif
1997 2697
1998#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
… …
2014} 2714}
2015 2715
2016/*****************************************************************************/ 2716/*****************************************************************************/
2017 2717
2018void 2718void
2019ev_feed_signal (int signum) EV_THROW 2719ev_feed_signal (int signum) EV_NOEXCEPT
2020{ 2720{
2021#if EV_MULTIPLICITY 2721#if EV_MULTIPLICITY
2722 EV_P;
2723 ECB_MEMORY_FENCE_ACQUIRE;
2022 EV_P = signals [signum - 1].loop; 2724 EV_A = signals [signum - 1].loop;
2023 2725
2024 if (!EV_A) 2726 if (!EV_A)
2025 return; 2727 return;
2026#endif 2728#endif
2027 2729
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1; 2730 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending); 2731 evpipe_write (EV_A_ &sig_pending);
2033} 2732}
2034 2733
2035static void 2734static void
… …
2040#endif 2739#endif
2041 2740
2042 ev_feed_signal (signum); 2741 ev_feed_signal (signum);
2043} 2742}
2044 2743
2045void noinline 2744ecb_noinline
2745void
2046ev_feed_signal_event (EV_P_ int signum) EV_THROW 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2047{ 2747{
2048 WL w; 2748 WL w;
2049 2749
2050 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2051 return; 2751 return;
2052 2752
2053 --signum; 2753 --signum;
2054 2754
2055#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
2056 /* 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 */
2057 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
2058 2758
2059 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
2060 return; 2760 return;
2061#endif 2761#endif
2062 2762
2063 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2064 MEMORY_FENCE_RELEASE; 2764 ECB_MEMORY_FENCE_RELEASE;
2065 2765
2066 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2068} 2768}
2069 2769
… …
2160# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
2161#endif 2861#endif
2162#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
2163# include "ev_epoll.c" 2863# include "ev_epoll.c"
2164#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
2165#if EV_USE_POLL 2871#if EV_USE_POLL
2166# include "ev_poll.c" 2872# include "ev_poll.c"
2167#endif 2873#endif
2168#if EV_USE_SELECT 2874#if EV_USE_SELECT
2169# include "ev_select.c" 2875# include "ev_select.c"
2170#endif 2876#endif
2171 2877
2172int ecb_cold 2878ecb_cold int
2173ev_version_major (void) EV_THROW 2879ev_version_major (void) EV_NOEXCEPT
2174{ 2880{
2175 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
2176} 2882}
2177 2883
2178int ecb_cold 2884ecb_cold int
2179ev_version_minor (void) EV_THROW 2885ev_version_minor (void) EV_NOEXCEPT
2180{ 2886{
2181 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
2182} 2888}
2183 2889
2184/* 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 */
2185int inline_size ecb_cold 2891inline_size ecb_cold int
2186enable_secure (void) 2892enable_secure (void)
2187{ 2893{
2188#ifdef _WIN32 2894#ifdef _WIN32
2189 return 0; 2895 return 0;
2190#else 2896#else
2191 return getuid () != geteuid () 2897 return getuid () != geteuid ()
2192 || getgid () != getegid (); 2898 || getgid () != getegid ();
2193#endif 2899#endif
2194} 2900}
2195 2901
2196unsigned int ecb_cold 2902ecb_cold
2903unsigned int
2197ev_supported_backends (void) EV_THROW 2904ev_supported_backends (void) EV_NOEXCEPT
2198{ 2905{
2199 unsigned int flags = 0; 2906 unsigned int flags = 0;
2200 2907
2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2203 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;
2204 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2206 2915
2207 return flags; 2916 return flags;
2208} 2917}
2209 2918
2210unsigned int ecb_cold 2919ecb_cold
2920unsigned int
2211ev_recommended_backends (void) EV_THROW 2921ev_recommended_backends (void) EV_NOEXCEPT
2212{ 2922{
2213 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
2214 2924
2215#ifndef __NetBSD__ 2925#ifndef __NetBSD__
2216 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
2224#endif 2934#endif
2225#ifdef __FreeBSD__ 2935#ifdef __FreeBSD__
2226 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) */
2227#endif 2937#endif
2228 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
2229 return flags; 2948 return flags;
2230} 2949}
2231 2950
2232unsigned int ecb_cold 2951ecb_cold
2952unsigned int
2233ev_embeddable_backends (void) EV_THROW 2953ev_embeddable_backends (void) EV_NOEXCEPT
2234{ 2954{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236 2956
2237 /* 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 */
2238 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 */
2239 flags &= ~EVBACKEND_EPOLL; 2959 flags &= ~EVBACKEND_EPOLL;
2240 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
2241 return flags; 2968 return flags;
2242} 2969}
2243 2970
2244unsigned int 2971unsigned int
2245ev_backend (EV_P) EV_THROW 2972ev_backend (EV_P) EV_NOEXCEPT
2246{ 2973{
2247 return backend; 2974 return backend;
2248} 2975}
2249 2976
2250#if EV_FEATURE_API 2977#if EV_FEATURE_API
2251unsigned int 2978unsigned int
2252ev_iteration (EV_P) EV_THROW 2979ev_iteration (EV_P) EV_NOEXCEPT
2253{ 2980{
2254 return loop_count; 2981 return loop_count;
2255} 2982}
2256 2983
2257unsigned int 2984unsigned int
2258ev_depth (EV_P) EV_THROW 2985ev_depth (EV_P) EV_NOEXCEPT
2259{ 2986{
2260 return loop_depth; 2987 return loop_depth;
2261} 2988}
2262 2989
2263void 2990void
2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2265{ 2992{
2266 io_blocktime = interval; 2993 io_blocktime = interval;
2267} 2994}
2268 2995
2269void 2996void
2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2271{ 2998{
2272 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
2273} 3000}
2274 3001
2275void 3002void
2276ev_set_userdata (EV_P_ void *data) EV_THROW 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2277{ 3004{
2278 userdata = data; 3005 userdata = data;
2279} 3006}
2280 3007
2281void * 3008void *
2282ev_userdata (EV_P) EV_THROW 3009ev_userdata (EV_P) EV_NOEXCEPT
2283{ 3010{
2284 return userdata; 3011 return userdata;
2285} 3012}
2286 3013
2287void 3014void
2288ev_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
2289{ 3016{
2290 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
2291} 3018}
2292 3019
2293void 3020void
2294ev_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
2295{ 3022{
2296 release_cb = release; 3023 release_cb = release;
2297 acquire_cb = acquire; 3024 acquire_cb = acquire;
2298} 3025}
2299#endif 3026#endif
2300 3027
2301/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
2302static void noinline ecb_cold 3029ecb_noinline ecb_cold
3030static void
2303loop_init (EV_P_ unsigned int flags) EV_THROW 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2304{ 3032{
2305 if (!backend) 3033 if (!backend)
2306 { 3034 {
2307 origflags = flags; 3035 origflags = flags;
2308 3036
… …
2353#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
2354 async_pending = 0; 3082 async_pending = 0;
2355#endif 3083#endif
2356 pipe_write_skipped = 0; 3084 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0; 3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
2358#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2360#endif 3090#endif
2361#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2364 3094
2365 if (!(flags & EVBACKEND_MASK)) 3095 if (!(flags & EVBACKEND_MASK))
2366 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
2367 3097
2368#if EV_USE_IOCP 3098#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif 3100#endif
2371#if EV_USE_PORT 3101#if EV_USE_PORT
2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2373#endif 3103#endif
2374#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
2375 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);
2376#endif 3112#endif
2377#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
2378 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2379#endif 3115#endif
2380#if EV_USE_POLL 3116#if EV_USE_POLL
2381 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2382#endif 3118#endif
2383#if EV_USE_SELECT 3119#if EV_USE_SELECT
2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2385#endif 3121#endif
2386 3122
2387 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
2388 3124
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2392#endif 3128#endif
2393 } 3129 }
2394} 3130}
2395 3131
2396/* free up a loop structure */ 3132/* free up a loop structure */
2397void ecb_cold 3133ecb_cold
3134void
2398ev_loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
2399{ 3136{
2400 int i; 3137 int i;
2401 3138
2402#if EV_MULTIPLICITY 3139#if EV_MULTIPLICITY
… …
2405 return; 3142 return;
2406#endif 3143#endif
2407 3144
2408#if EV_CLEANUP_ENABLE 3145#if EV_CLEANUP_ENABLE
2409 /* queue cleanup watchers (and execute them) */ 3146 /* queue cleanup watchers (and execute them) */
2410 if (expect_false (cleanupcnt)) 3147 if (ecb_expect_false (cleanupcnt))
2411 { 3148 {
2412 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3149 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2413 EV_INVOKE_PENDING; 3150 EV_INVOKE_PENDING;
2414 } 3151 }
2415#endif 3152#endif
… …
2425 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
2426 { 3163 {
2427 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
2428 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
2429 3166
2430#if EV_USE_EVENTFD
2431 if (evfd >= 0)
2432 close (evfd);
2433#endif
2434
2435 if (evpipe [0] >= 0)
2436 {
2437 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2438 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2439 }
2440 } 3169 }
2441 3170
2442#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
2443 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
2444 close (sigfd); 3173 close (sigfd);
… …
2451 3180
2452 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
2453 close (backend_fd); 3182 close (backend_fd);
2454 3183
2455#if EV_USE_IOCP 3184#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif 3186#endif
2458#if EV_USE_PORT 3187#if EV_USE_PORT
2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2460#endif 3189#endif
2461#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
2462 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);
2463#endif 3198#endif
2464#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
2465 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2466#endif 3201#endif
2467#if EV_USE_POLL 3202#if EV_USE_POLL
2468 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2469#endif 3204#endif
2470#if EV_USE_SELECT 3205#if EV_USE_SELECT
2471 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2472#endif 3207#endif
2473 3208
2474 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
2475 { 3210 {
2476 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
2518 3253
2519inline_size void 3254inline_size void
2520loop_fork (EV_P) 3255loop_fork (EV_P)
2521{ 3256{
2522#if EV_USE_PORT 3257#if EV_USE_PORT
2523 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2524#endif 3259#endif
2525#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
2526 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);
2527#endif 3268#endif
2528#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
2529 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2530#endif 3271#endif
2531#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
2532 infy_fork (EV_A); 3273 infy_fork (EV_A);
2533#endif 3274#endif
2534 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2535 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
2536 { 3278 {
2537 /* 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 */
2538 3280
2539 ev_ref (EV_A); 3281 ev_ref (EV_A);
2540 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
2541 3283
2542#if EV_USE_EVENTFD
2543 if (evfd >= 0)
2544 close (evfd);
2545#endif
2546
2547 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
2548 {
2549 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
2550 EV_WIN32_CLOSE_FD (evpipe [1]);
2551 }
2552 3286
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2554 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
2555 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
2556 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2557#endif
2558 } 3290 }
3291#endif
2559 3292
2560 postfork = 0; 3293 postfork = 0;
2561} 3294}
2562 3295
2563#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
2564 3297
3298ecb_cold
2565struct ev_loop * ecb_cold 3299struct ev_loop *
2566ev_loop_new (unsigned int flags) EV_THROW 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
2567{ 3301{
2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2569 3303
2570 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
2571 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
… …
2578} 3312}
2579 3313
2580#endif /* multiplicity */ 3314#endif /* multiplicity */
2581 3315
2582#if EV_VERIFY 3316#if EV_VERIFY
2583static void noinline ecb_cold 3317ecb_noinline ecb_cold
3318static void
2584verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
2585{ 3320{
2586 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));
2587 3322
2588 if (w->pending) 3323 if (w->pending)
2589 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));
2590} 3325}
2591 3326
2592static void noinline ecb_cold 3327ecb_noinline ecb_cold
3328static void
2593verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
2594{ 3330{
2595 int i; 3331 int i;
2596 3332
2597 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2602 3338
2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2604 } 3340 }
2605} 3341}
2606 3342
2607static void noinline ecb_cold 3343ecb_noinline ecb_cold
3344static void
2608array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
2609{ 3346{
2610 while (cnt--) 3347 while (cnt--)
2611 { 3348 {
2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2615} 3352}
2616#endif 3353#endif
2617 3354
2618#if EV_FEATURE_API 3355#if EV_FEATURE_API
2619void ecb_cold 3356void ecb_cold
2620ev_verify (EV_P) EV_THROW 3357ev_verify (EV_P) EV_NOEXCEPT
2621{ 3358{
2622#if EV_VERIFY 3359#if EV_VERIFY
2623 int i; 3360 int i;
2624 WL w, w2; 3361 WL w, w2;
2625 3362
… …
2701#endif 3438#endif
2702} 3439}
2703#endif 3440#endif
2704 3441
2705#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
2706struct ev_loop * ecb_cold 3444struct ev_loop *
2707#else 3445#else
2708int 3446int
2709#endif 3447#endif
2710ev_default_loop (unsigned int flags) EV_THROW 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
2711{ 3449{
2712 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
2713 { 3451 {
2714#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
2715 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2734 3472
2735 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
2736} 3474}
2737 3475
2738void 3476void
2739ev_loop_fork (EV_P) EV_THROW 3477ev_loop_fork (EV_P) EV_NOEXCEPT
2740{ 3478{
2741 postfork = 1; /* must be in line with ev_default_fork */ 3479 postfork = 1;
2742} 3480}
2743 3481
2744/*****************************************************************************/ 3482/*****************************************************************************/
2745 3483
2746void 3484void
… …
2748{ 3486{
2749 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
2750} 3488}
2751 3489
2752unsigned int 3490unsigned int
2753ev_pending_count (EV_P) EV_THROW 3491ev_pending_count (EV_P) EV_NOEXCEPT
2754{ 3492{
2755 int pri; 3493 int pri;
2756 unsigned int count = 0; 3494 unsigned int count = 0;
2757 3495
2758 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
2759 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
2760 3498
2761 return count; 3499 return count;
2762} 3500}
2763 3501
2764void noinline 3502ecb_noinline
3503void
2765ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2766{ 3505{
2767 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 */
2768 while (pendingcnt [pendingpri]) 3513 while (pendingcnt [pendingpri])
2769 { 3514 {
2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2771 3516
2772 p->w->pending = 0; 3517 p->w->pending = 0;
2773 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2774 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2775 } 3520 }
3521 }
3522 while (pendingpri);
2776} 3523}
2777 3524
2778#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2779/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2780/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2781inline_size void 3528inline_size void
2782idle_reify (EV_P) 3529idle_reify (EV_P)
2783{ 3530{
2784 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2785 { 3532 {
2786 int pri; 3533 int pri;
2787 3534
2788 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2789 { 3536 {
… …
2819 { 3566 {
2820 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2821 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2822 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2823 3570
2824 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.)));
2825 3572
2826 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2827 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2828 } 3575 }
2829 else 3576 else
… …
2838 } 3585 }
2839} 3586}
2840 3587
2841#if EV_PERIODIC_ENABLE 3588#if EV_PERIODIC_ENABLE
2842 3589
2843static void noinline 3590ecb_noinline
3591static void
2844periodic_recalc (EV_P_ ev_periodic *w) 3592periodic_recalc (EV_P_ ev_periodic *w)
2845{ 3593{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3594 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2847 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);
2848 3596
… …
2850 while (at <= ev_rt_now) 3598 while (at <= ev_rt_now)
2851 { 3599 {
2852 ev_tstamp nat = at + w->interval; 3600 ev_tstamp nat = at + w->interval;
2853 3601
2854 /* when resolution fails us, we use ev_rt_now */ 3602 /* when resolution fails us, we use ev_rt_now */
2855 if (expect_false (nat == at)) 3603 if (ecb_expect_false (nat == at))
2856 { 3604 {
2857 at = ev_rt_now; 3605 at = ev_rt_now;
2858 break; 3606 break;
2859 } 3607 }
2860 3608
… …
2906 } 3654 }
2907} 3655}
2908 3656
2909/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2910/* 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? */
2911static void noinline ecb_cold 3659ecb_noinline ecb_cold
3660static void
2912periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2913{ 3662{
2914 int i; 3663 int i;
2915 3664
2916 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2929 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2930} 3679}
2931#endif 3680#endif
2932 3681
2933/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2934static void noinline ecb_cold 3683ecb_noinline ecb_cold
3684static void
2935timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2936{ 3686{
2937 int i; 3687 int i;
2938 3688
2939 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2948/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2949inline_speed void 3699inline_speed void
2950time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2951{ 3701{
2952#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2953 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2954 { 3704 {
2955 int i; 3705 int i;
2956 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2957 3707
2958 mn_now = get_clock (); 3708 mn_now = get_clock ();
2959 3709
2960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2961 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2962 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)))
2963 { 3713 {
2964 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2965 return; 3715 return;
2966 } 3716 }
2967 3717
… …
2981 ev_tstamp diff; 3731 ev_tstamp diff;
2982 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2983 3733
2984 diff = odiff - rtmn_diff; 3734 diff = odiff - rtmn_diff;
2985 3735
2986 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)))
2987 return; /* all is well */ 3737 return; /* all is well */
2988 3738
2989 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2990 mn_now = get_clock (); 3740 mn_now = get_clock ();
2991 now_floor = mn_now; 3741 now_floor = mn_now;
… …
3000 else 3750 else
3001#endif 3751#endif
3002 { 3752 {
3003 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
3004 3754
3005 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)))
3006 { 3756 {
3007 /* 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 */
3008 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3009#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
3010 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
3033#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
3034 ev_verify (EV_A); 3784 ev_verify (EV_A);
3035#endif 3785#endif
3036 3786
3037#ifndef _WIN32 3787#ifndef _WIN32
3038 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3039 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
3040 { 3790 {
3041 curpid = getpid (); 3791 curpid = getpid ();
3042 postfork = 1; 3792 postfork = 1;
3043 } 3793 }
3044#endif 3794#endif
3045 3795
3046#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
3047 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
3048 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
3049 if (forkcnt) 3799 if (forkcnt)
3050 { 3800 {
3051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3052 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
3053 } 3803 }
3054#endif 3804#endif
3055 3805
3056#if EV_PREPARE_ENABLE 3806#if EV_PREPARE_ENABLE
3057 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
3058 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
3059 { 3809 {
3060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3061 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
3062 } 3812 }
3063#endif 3813#endif
3064 3814
3065 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
3066 break; 3816 break;
3067 3817
3068 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
3069 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
3070 loop_fork (EV_A); 3820 loop_fork (EV_A);
3071 3821
3072 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
3073 fd_reify (EV_A); 3823 fd_reify (EV_A);
3074 3824
… …
3079 3829
3080 /* remember old timestamp for io_blocktime calculation */ 3830 /* remember old timestamp for io_blocktime calculation */
3081 ev_tstamp prev_mn_now = mn_now; 3831 ev_tstamp prev_mn_now = mn_now;
3082 3832
3083 /* update time to cancel out callback processing overhead */ 3833 /* update time to cancel out callback processing overhead */
3084 time_update (EV_A_ 1e100); 3834 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3085 3835
3086 /* from now on, we want a pipe-wake-up */ 3836 /* from now on, we want a pipe-wake-up */
3087 pipe_write_wanted = 1; 3837 pipe_write_wanted = 1;
3088 3838
3089 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 */
3090 3840
3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3092 { 3842 {
3093 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3094 3844
3095 if (timercnt) 3845 if (timercnt)
3096 { 3846 {
3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3098 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
… …
3105 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
3106 } 3856 }
3107#endif 3857#endif
3108 3858
3109 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
3110 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
3111 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
3112 3862
3113 /* at this point, we NEED to wait, so we have to ensure */ 3863 /* now there are two more special cases left, either we have
3114 /* to pass a minimum nonzero value to the backend */ 3864 * already-expired timers, so we should not sleep, or we have timers
3865 * that expire very soon, in which case we need to wait for a minimum
3866 * amount of time for some event loop backends.
3867 */
3115 if (expect_false (waittime < backend_mintime)) 3868 if (ecb_expect_false (waittime < backend_mintime))
3869 waittime = waittime <= EV_TS_CONST (0.)
3870 ? EV_TS_CONST (0.)
3116 waittime = backend_mintime; 3871 : backend_mintime;
3117 3872
3118 /* extra check because io_blocktime is commonly 0 */ 3873 /* extra check because io_blocktime is commonly 0 */
3119 if (expect_false (io_blocktime)) 3874 if (ecb_expect_false (io_blocktime))
3120 { 3875 {
3121 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3876 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3122 3877
3123 if (sleeptime > waittime - backend_mintime) 3878 if (sleeptime > waittime - backend_mintime)
3124 sleeptime = waittime - backend_mintime; 3879 sleeptime = waittime - backend_mintime;
3125 3880
3126 if (expect_true (sleeptime > 0.)) 3881 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3127 { 3882 {
3128 ev_sleep (sleeptime); 3883 ev_sleep (sleeptime);
3129 waittime -= sleeptime; 3884 waittime -= sleeptime;
3130 } 3885 }
3131 } 3886 }
… …
3138 backend_poll (EV_A_ waittime); 3893 backend_poll (EV_A_ waittime);
3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3894 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140 3895
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3896 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142 3897
3898 ECB_MEMORY_FENCE_ACQUIRE;
3143 if (pipe_write_skipped) 3899 if (pipe_write_skipped)
3144 { 3900 {
3145 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3901 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3146 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3902 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3147 } 3903 }
3148 3904
3149
3150 /* update ev_rt_now, do magic */ 3905 /* update ev_rt_now, do magic */
3151 time_update (EV_A_ waittime + sleeptime); 3906 time_update (EV_A_ waittime + sleeptime);
3152 } 3907 }
3153 3908
3154 /* queue pending timers and reschedule them */ 3909 /* queue pending timers and reschedule them */
… …
3162 idle_reify (EV_A); 3917 idle_reify (EV_A);
3163#endif 3918#endif
3164 3919
3165#if EV_CHECK_ENABLE 3920#if EV_CHECK_ENABLE
3166 /* queue check watchers, to be executed first */ 3921 /* queue check watchers, to be executed first */
3167 if (expect_false (checkcnt)) 3922 if (ecb_expect_false (checkcnt))
3168 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3923 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3169#endif 3924#endif
3170 3925
3171 EV_INVOKE_PENDING; 3926 EV_INVOKE_PENDING;
3172 } 3927 }
3173 while (expect_true ( 3928 while (ecb_expect_true (
3174 activecnt 3929 activecnt
3175 && !loop_done 3930 && !loop_done
3176 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3931 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3177 )); 3932 ));
3178 3933
… …
3185 3940
3186 return activecnt; 3941 return activecnt;
3187} 3942}
3188 3943
3189void 3944void
3190ev_break (EV_P_ int how) EV_THROW 3945ev_break (EV_P_ int how) EV_NOEXCEPT
3191{ 3946{
3192 loop_done = how; 3947 loop_done = how;
3193} 3948}
3194 3949
3195void 3950void
3196ev_ref (EV_P) EV_THROW 3951ev_ref (EV_P) EV_NOEXCEPT
3197{ 3952{
3198 ++activecnt; 3953 ++activecnt;
3199} 3954}
3200 3955
3201void 3956void
3202ev_unref (EV_P) EV_THROW 3957ev_unref (EV_P) EV_NOEXCEPT
3203{ 3958{
3204 --activecnt; 3959 --activecnt;
3205} 3960}
3206 3961
3207void 3962void
3208ev_now_update (EV_P) EV_THROW 3963ev_now_update (EV_P) EV_NOEXCEPT
3209{ 3964{
3210 time_update (EV_A_ 1e100); 3965 time_update (EV_A_ EV_TSTAMP_HUGE);
3211} 3966}
3212 3967
3213void 3968void
3214ev_suspend (EV_P) EV_THROW 3969ev_suspend (EV_P) EV_NOEXCEPT
3215{ 3970{
3216 ev_now_update (EV_A); 3971 ev_now_update (EV_A);
3217} 3972}
3218 3973
3219void 3974void
3220ev_resume (EV_P) EV_THROW 3975ev_resume (EV_P) EV_NOEXCEPT
3221{ 3976{
3222 ev_tstamp mn_prev = mn_now; 3977 ev_tstamp mn_prev = mn_now;
3223 3978
3224 ev_now_update (EV_A); 3979 ev_now_update (EV_A);
3225 timers_reschedule (EV_A_ mn_now - mn_prev); 3980 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3242inline_size void 3997inline_size void
3243wlist_del (WL *head, WL elem) 3998wlist_del (WL *head, WL elem)
3244{ 3999{
3245 while (*head) 4000 while (*head)
3246 { 4001 {
3247 if (expect_true (*head == elem)) 4002 if (ecb_expect_true (*head == elem))
3248 { 4003 {
3249 *head = elem->next; 4004 *head = elem->next;
3250 break; 4005 break;
3251 } 4006 }
3252 4007
… …
3264 w->pending = 0; 4019 w->pending = 0;
3265 } 4020 }
3266} 4021}
3267 4022
3268int 4023int
3269ev_clear_pending (EV_P_ void *w) EV_THROW 4024ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3270{ 4025{
3271 W w_ = (W)w; 4026 W w_ = (W)w;
3272 int pending = w_->pending; 4027 int pending = w_->pending;
3273 4028
3274 if (expect_true (pending)) 4029 if (ecb_expect_true (pending))
3275 { 4030 {
3276 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4031 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3277 p->w = (W)&pending_w; 4032 p->w = (W)&pending_w;
3278 w_->pending = 0; 4033 w_->pending = 0;
3279 return p->events; 4034 return p->events;
… …
3306 w->active = 0; 4061 w->active = 0;
3307} 4062}
3308 4063
3309/*****************************************************************************/ 4064/*****************************************************************************/
3310 4065
3311void noinline 4066ecb_noinline
4067void
3312ev_io_start (EV_P_ ev_io *w) EV_THROW 4068ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3313{ 4069{
3314 int fd = w->fd; 4070 int fd = w->fd;
3315 4071
3316 if (expect_false (ev_is_active (w))) 4072 if (ecb_expect_false (ev_is_active (w)))
3317 return; 4073 return;
3318 4074
3319 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4075 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3320 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4076 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3321 4077
4078#if EV_VERIFY >= 2
4079 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4080#endif
3322 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
3323 4082
3324 ev_start (EV_A_ (W)w, 1); 4083 ev_start (EV_A_ (W)w, 1);
3325 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4084 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3326 wlist_add (&anfds[fd].head, (WL)w); 4085 wlist_add (&anfds[fd].head, (WL)w);
3327 4086
3328 /* common bug, apparently */ 4087 /* common bug, apparently */
3329 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4088 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3330 4089
… …
3332 w->events &= ~EV__IOFDSET; 4091 w->events &= ~EV__IOFDSET;
3333 4092
3334 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
3335} 4094}
3336 4095
3337void noinline 4096ecb_noinline
4097void
3338ev_io_stop (EV_P_ ev_io *w) EV_THROW 4098ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3339{ 4099{
3340 clear_pending (EV_A_ (W)w); 4100 clear_pending (EV_A_ (W)w);
3341 if (expect_false (!ev_is_active (w))) 4101 if (ecb_expect_false (!ev_is_active (w)))
3342 return; 4102 return;
3343 4103
3344 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4104 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3345 4105
4106#if EV_VERIFY >= 2
4107 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4108#endif
3346 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
3347 4110
3348 wlist_del (&anfds[w->fd].head, (WL)w); 4111 wlist_del (&anfds[w->fd].head, (WL)w);
3349 ev_stop (EV_A_ (W)w); 4112 ev_stop (EV_A_ (W)w);
3350 4113
3351 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4114 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3352 4115
3353 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
3354} 4117}
3355 4118
3356void noinline 4119ecb_noinline
4120void
3357ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4121ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3358{ 4122{
3359 if (expect_false (ev_is_active (w))) 4123 if (ecb_expect_false (ev_is_active (w)))
3360 return; 4124 return;
3361 4125
3362 ev_at (w) += mn_now; 4126 ev_at (w) += mn_now;
3363 4127
3364 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4128 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3365 4129
3366 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
3367 4131
3368 ++timercnt; 4132 ++timercnt;
3369 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4133 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3370 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4134 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3371 ANHE_w (timers [ev_active (w)]) = (WT)w; 4135 ANHE_w (timers [ev_active (w)]) = (WT)w;
3372 ANHE_at_cache (timers [ev_active (w)]); 4136 ANHE_at_cache (timers [ev_active (w)]);
3373 upheap (timers, ev_active (w)); 4137 upheap (timers, ev_active (w));
3374 4138
3375 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3376 4140
3377 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4141 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3378} 4142}
3379 4143
3380void noinline 4144ecb_noinline
4145void
3381ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4146ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3382{ 4147{
3383 clear_pending (EV_A_ (W)w); 4148 clear_pending (EV_A_ (W)w);
3384 if (expect_false (!ev_is_active (w))) 4149 if (ecb_expect_false (!ev_is_active (w)))
3385 return; 4150 return;
3386 4151
3387 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
3388 4153
3389 { 4154 {
… …
3391 4156
3392 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4157 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3393 4158
3394 --timercnt; 4159 --timercnt;
3395 4160
3396 if (expect_true (active < timercnt + HEAP0)) 4161 if (ecb_expect_true (active < timercnt + HEAP0))
3397 { 4162 {
3398 timers [active] = timers [timercnt + HEAP0]; 4163 timers [active] = timers [timercnt + HEAP0];
3399 adjustheap (timers, timercnt, active); 4164 adjustheap (timers, timercnt, active);
3400 } 4165 }
3401 } 4166 }
… …
3405 ev_stop (EV_A_ (W)w); 4170 ev_stop (EV_A_ (W)w);
3406 4171
3407 EV_FREQUENT_CHECK; 4172 EV_FREQUENT_CHECK;
3408} 4173}
3409 4174
3410void noinline 4175ecb_noinline
4176void
3411ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4177ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3412{ 4178{
3413 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
3414 4180
3415 clear_pending (EV_A_ (W)w); 4181 clear_pending (EV_A_ (W)w);
3416 4182
… …
3433 4199
3434 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3435} 4201}
3436 4202
3437ev_tstamp 4203ev_tstamp
3438ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4204ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3439{ 4205{
3440 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4206 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3441} 4207}
3442 4208
3443#if EV_PERIODIC_ENABLE 4209#if EV_PERIODIC_ENABLE
3444void noinline 4210ecb_noinline
4211void
3445ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4212ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3446{ 4213{
3447 if (expect_false (ev_is_active (w))) 4214 if (ecb_expect_false (ev_is_active (w)))
3448 return; 4215 return;
3449 4216
3450 if (w->reschedule_cb) 4217 if (w->reschedule_cb)
3451 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4218 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3452 else if (w->interval) 4219 else if (w->interval)
… …
3459 4226
3460 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
3461 4228
3462 ++periodiccnt; 4229 ++periodiccnt;
3463 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4230 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3464 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4231 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3465 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4232 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3466 ANHE_at_cache (periodics [ev_active (w)]); 4233 ANHE_at_cache (periodics [ev_active (w)]);
3467 upheap (periodics, ev_active (w)); 4234 upheap (periodics, ev_active (w));
3468 4235
3469 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3470 4237
3471 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4238 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3472} 4239}
3473 4240
3474void noinline 4241ecb_noinline
4242void
3475ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4243ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3476{ 4244{
3477 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
3478 if (expect_false (!ev_is_active (w))) 4246 if (ecb_expect_false (!ev_is_active (w)))
3479 return; 4247 return;
3480 4248
3481 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
3482 4250
3483 { 4251 {
… …
3485 4253
3486 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4254 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3487 4255
3488 --periodiccnt; 4256 --periodiccnt;
3489 4257
3490 if (expect_true (active < periodiccnt + HEAP0)) 4258 if (ecb_expect_true (active < periodiccnt + HEAP0))
3491 { 4259 {
3492 periodics [active] = periodics [periodiccnt + HEAP0]; 4260 periodics [active] = periodics [periodiccnt + HEAP0];
3493 adjustheap (periodics, periodiccnt, active); 4261 adjustheap (periodics, periodiccnt, active);
3494 } 4262 }
3495 } 4263 }
… …
3497 ev_stop (EV_A_ (W)w); 4265 ev_stop (EV_A_ (W)w);
3498 4266
3499 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3500} 4268}
3501 4269
3502void noinline 4270ecb_noinline
4271void
3503ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4272ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3504{ 4273{
3505 /* TODO: use adjustheap and recalculation */ 4274 /* TODO: use adjustheap and recalculation */
3506 ev_periodic_stop (EV_A_ w); 4275 ev_periodic_stop (EV_A_ w);
3507 ev_periodic_start (EV_A_ w); 4276 ev_periodic_start (EV_A_ w);
3508} 4277}
… …
3512# define SA_RESTART 0 4281# define SA_RESTART 0
3513#endif 4282#endif
3514 4283
3515#if EV_SIGNAL_ENABLE 4284#if EV_SIGNAL_ENABLE
3516 4285
3517void noinline 4286ecb_noinline
4287void
3518ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4288ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3519{ 4289{
3520 if (expect_false (ev_is_active (w))) 4290 if (ecb_expect_false (ev_is_active (w)))
3521 return; 4291 return;
3522 4292
3523 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4293 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3524 4294
3525#if EV_MULTIPLICITY 4295#if EV_MULTIPLICITY
3526 assert (("libev: a signal must not be attached to two different loops", 4296 assert (("libev: a signal must not be attached to two different loops",
3527 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4297 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3528 4298
3529 signals [w->signum - 1].loop = EV_A; 4299 signals [w->signum - 1].loop = EV_A;
4300 ECB_MEMORY_FENCE_RELEASE;
3530#endif 4301#endif
3531 4302
3532 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
3533 4304
3534#if EV_USE_SIGNALFD 4305#if EV_USE_SIGNALFD
… …
3593 } 4364 }
3594 4365
3595 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
3596} 4367}
3597 4368
3598void noinline 4369ecb_noinline
4370void
3599ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4371ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3600{ 4372{
3601 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
3602 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
3603 return; 4375 return;
3604 4376
3605 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3606 4378
3607 wlist_del (&signals [w->signum - 1].head, (WL)w); 4379 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3635#endif 4407#endif
3636 4408
3637#if EV_CHILD_ENABLE 4409#if EV_CHILD_ENABLE
3638 4410
3639void 4411void
3640ev_child_start (EV_P_ ev_child *w) EV_THROW 4412ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3641{ 4413{
3642#if EV_MULTIPLICITY 4414#if EV_MULTIPLICITY
3643 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4415 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3644#endif 4416#endif
3645 if (expect_false (ev_is_active (w))) 4417 if (ecb_expect_false (ev_is_active (w)))
3646 return; 4418 return;
3647 4419
3648 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
3649 4421
3650 ev_start (EV_A_ (W)w, 1); 4422 ev_start (EV_A_ (W)w, 1);
… …
3652 4424
3653 EV_FREQUENT_CHECK; 4425 EV_FREQUENT_CHECK;
3654} 4426}
3655 4427
3656void 4428void
3657ev_child_stop (EV_P_ ev_child *w) EV_THROW 4429ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3658{ 4430{
3659 clear_pending (EV_A_ (W)w); 4431 clear_pending (EV_A_ (W)w);
3660 if (expect_false (!ev_is_active (w))) 4432 if (ecb_expect_false (!ev_is_active (w)))
3661 return; 4433 return;
3662 4434
3663 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
3664 4436
3665 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4437 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3679 4451
3680#define DEF_STAT_INTERVAL 5.0074891 4452#define DEF_STAT_INTERVAL 5.0074891
3681#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4453#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3682#define MIN_STAT_INTERVAL 0.1074891 4454#define MIN_STAT_INTERVAL 0.1074891
3683 4455
3684static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4456ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3685 4457
3686#if EV_USE_INOTIFY 4458#if EV_USE_INOTIFY
3687 4459
3688/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4460/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3689# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4461# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3690 4462
3691static void noinline 4463ecb_noinline
4464static void
3692infy_add (EV_P_ ev_stat *w) 4465infy_add (EV_P_ ev_stat *w)
3693{ 4466{
3694 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); 4467 w->wd = inotify_add_watch (fs_fd, w->path,
4468 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4469 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4470 | IN_DONT_FOLLOW | IN_MASK_ADD);
3695 4471
3696 if (w->wd >= 0) 4472 if (w->wd >= 0)
3697 { 4473 {
3698 struct statfs sfs; 4474 struct statfs sfs;
3699 4475
… …
3703 4479
3704 if (!fs_2625) 4480 if (!fs_2625)
3705 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4481 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3706 else if (!statfs (w->path, &sfs) 4482 else if (!statfs (w->path, &sfs)
3707 && (sfs.f_type == 0x1373 /* devfs */ 4483 && (sfs.f_type == 0x1373 /* devfs */
4484 || sfs.f_type == 0x4006 /* fat */
4485 || sfs.f_type == 0x4d44 /* msdos */
3708 || sfs.f_type == 0xEF53 /* ext2/3 */ 4486 || sfs.f_type == 0xEF53 /* ext2/3 */
4487 || sfs.f_type == 0x72b6 /* jffs2 */
4488 || sfs.f_type == 0x858458f6 /* ramfs */
4489 || sfs.f_type == 0x5346544e /* ntfs */
3709 || sfs.f_type == 0x3153464a /* jfs */ 4490 || sfs.f_type == 0x3153464a /* jfs */
4491 || sfs.f_type == 0x9123683e /* btrfs */
3710 || sfs.f_type == 0x52654973 /* reiser3 */ 4492 || sfs.f_type == 0x52654973 /* reiser3 */
3711 || sfs.f_type == 0x01021994 /* tempfs */ 4493 || sfs.f_type == 0x01021994 /* tmpfs */
3712 || sfs.f_type == 0x58465342 /* xfs */)) 4494 || sfs.f_type == 0x58465342 /* xfs */))
3713 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4495 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3714 else 4496 else
3715 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4497 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3716 } 4498 }
… …
3751 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4533 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3752 ev_timer_again (EV_A_ &w->timer); 4534 ev_timer_again (EV_A_ &w->timer);
3753 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4535 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3754} 4536}
3755 4537
3756static void noinline 4538ecb_noinline
4539static void
3757infy_del (EV_P_ ev_stat *w) 4540infy_del (EV_P_ ev_stat *w)
3758{ 4541{
3759 int slot; 4542 int slot;
3760 int wd = w->wd; 4543 int wd = w->wd;
3761 4544
… …
3768 4551
3769 /* remove this watcher, if others are watching it, they will rearm */ 4552 /* remove this watcher, if others are watching it, they will rearm */
3770 inotify_rm_watch (fs_fd, wd); 4553 inotify_rm_watch (fs_fd, wd);
3771} 4554}
3772 4555
3773static void noinline 4556ecb_noinline
4557static void
3774infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4558infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3775{ 4559{
3776 if (slot < 0) 4560 if (slot < 0)
3777 /* overflow, need to check for all hash slots */ 4561 /* overflow, need to check for all hash slots */
3778 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4562 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3814 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4598 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3815 ofs += sizeof (struct inotify_event) + ev->len; 4599 ofs += sizeof (struct inotify_event) + ev->len;
3816 } 4600 }
3817} 4601}
3818 4602
3819inline_size void ecb_cold 4603inline_size ecb_cold
4604void
3820ev_check_2625 (EV_P) 4605ev_check_2625 (EV_P)
3821{ 4606{
3822 /* kernels < 2.6.25 are borked 4607 /* kernels < 2.6.25 are borked
3823 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4608 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3824 */ 4609 */
… …
3914#else 4699#else
3915# define EV_LSTAT(p,b) lstat (p, b) 4700# define EV_LSTAT(p,b) lstat (p, b)
3916#endif 4701#endif
3917 4702
3918void 4703void
3919ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4704ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3920{ 4705{
3921 if (lstat (w->path, &w->attr) < 0) 4706 if (lstat (w->path, &w->attr) < 0)
3922 w->attr.st_nlink = 0; 4707 w->attr.st_nlink = 0;
3923 else if (!w->attr.st_nlink) 4708 else if (!w->attr.st_nlink)
3924 w->attr.st_nlink = 1; 4709 w->attr.st_nlink = 1;
3925} 4710}
3926 4711
3927static void noinline 4712ecb_noinline
4713static void
3928stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4714stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3929{ 4715{
3930 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4716 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3931 4717
3932 ev_statdata prev = w->attr; 4718 ev_statdata prev = w->attr;
… …
3963 ev_feed_event (EV_A_ w, EV_STAT); 4749 ev_feed_event (EV_A_ w, EV_STAT);
3964 } 4750 }
3965} 4751}
3966 4752
3967void 4753void
3968ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4754ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3969{ 4755{
3970 if (expect_false (ev_is_active (w))) 4756 if (ecb_expect_false (ev_is_active (w)))
3971 return; 4757 return;
3972 4758
3973 ev_stat_stat (EV_A_ w); 4759 ev_stat_stat (EV_A_ w);
3974 4760
3975 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4761 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3994 4780
3995 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
3996} 4782}
3997 4783
3998void 4784void
3999ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4785ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4000{ 4786{
4001 clear_pending (EV_A_ (W)w); 4787 clear_pending (EV_A_ (W)w);
4002 if (expect_false (!ev_is_active (w))) 4788 if (ecb_expect_false (!ev_is_active (w)))
4003 return; 4789 return;
4004 4790
4005 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
4006 4792
4007#if EV_USE_INOTIFY 4793#if EV_USE_INOTIFY
… …
4020} 4806}
4021#endif 4807#endif
4022 4808
4023#if EV_IDLE_ENABLE 4809#if EV_IDLE_ENABLE
4024void 4810void
4025ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4811ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4026{ 4812{
4027 if (expect_false (ev_is_active (w))) 4813 if (ecb_expect_false (ev_is_active (w)))
4028 return; 4814 return;
4029 4815
4030 pri_adjust (EV_A_ (W)w); 4816 pri_adjust (EV_A_ (W)w);
4031 4817
4032 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
… …
4035 int active = ++idlecnt [ABSPRI (w)]; 4821 int active = ++idlecnt [ABSPRI (w)];
4036 4822
4037 ++idleall; 4823 ++idleall;
4038 ev_start (EV_A_ (W)w, active); 4824 ev_start (EV_A_ (W)w, active);
4039 4825
4040 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4826 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4041 idles [ABSPRI (w)][active - 1] = w; 4827 idles [ABSPRI (w)][active - 1] = w;
4042 } 4828 }
4043 4829
4044 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
4045} 4831}
4046 4832
4047void 4833void
4048ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4834ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4049{ 4835{
4050 clear_pending (EV_A_ (W)w); 4836 clear_pending (EV_A_ (W)w);
4051 if (expect_false (!ev_is_active (w))) 4837 if (ecb_expect_false (!ev_is_active (w)))
4052 return; 4838 return;
4053 4839
4054 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
4055 4841
4056 { 4842 {
… …
4067} 4853}
4068#endif 4854#endif
4069 4855
4070#if EV_PREPARE_ENABLE 4856#if EV_PREPARE_ENABLE
4071void 4857void
4072ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4858ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4073{ 4859{
4074 if (expect_false (ev_is_active (w))) 4860 if (ecb_expect_false (ev_is_active (w)))
4075 return; 4861 return;
4076 4862
4077 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
4078 4864
4079 ev_start (EV_A_ (W)w, ++preparecnt); 4865 ev_start (EV_A_ (W)w, ++preparecnt);
4080 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4866 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4081 prepares [preparecnt - 1] = w; 4867 prepares [preparecnt - 1] = w;
4082 4868
4083 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
4084} 4870}
4085 4871
4086void 4872void
4087ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4873ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4088{ 4874{
4089 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
4090 if (expect_false (!ev_is_active (w))) 4876 if (ecb_expect_false (!ev_is_active (w)))
4091 return; 4877 return;
4092 4878
4093 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
4094 4880
4095 { 4881 {
… …
4105} 4891}
4106#endif 4892#endif
4107 4893
4108#if EV_CHECK_ENABLE 4894#if EV_CHECK_ENABLE
4109void 4895void
4110ev_check_start (EV_P_ ev_check *w) EV_THROW 4896ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4111{ 4897{
4112 if (expect_false (ev_is_active (w))) 4898 if (ecb_expect_false (ev_is_active (w)))
4113 return; 4899 return;
4114 4900
4115 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
4116 4902
4117 ev_start (EV_A_ (W)w, ++checkcnt); 4903 ev_start (EV_A_ (W)w, ++checkcnt);
4118 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4904 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4119 checks [checkcnt - 1] = w; 4905 checks [checkcnt - 1] = w;
4120 4906
4121 EV_FREQUENT_CHECK; 4907 EV_FREQUENT_CHECK;
4122} 4908}
4123 4909
4124void 4910void
4125ev_check_stop (EV_P_ ev_check *w) EV_THROW 4911ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4126{ 4912{
4127 clear_pending (EV_A_ (W)w); 4913 clear_pending (EV_A_ (W)w);
4128 if (expect_false (!ev_is_active (w))) 4914 if (ecb_expect_false (!ev_is_active (w)))
4129 return; 4915 return;
4130 4916
4131 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
4132 4918
4133 { 4919 {
… …
4142 EV_FREQUENT_CHECK; 4928 EV_FREQUENT_CHECK;
4143} 4929}
4144#endif 4930#endif
4145 4931
4146#if EV_EMBED_ENABLE 4932#if EV_EMBED_ENABLE
4147void noinline 4933ecb_noinline
4934void
4148ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4935ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4149{ 4936{
4150 ev_run (w->other, EVRUN_NOWAIT); 4937 ev_run (w->other, EVRUN_NOWAIT);
4151} 4938}
4152 4939
4153static void 4940static void
… …
4201 ev_idle_stop (EV_A_ idle); 4988 ev_idle_stop (EV_A_ idle);
4202} 4989}
4203#endif 4990#endif
4204 4991
4205void 4992void
4206ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4993ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4207{ 4994{
4208 if (expect_false (ev_is_active (w))) 4995 if (ecb_expect_false (ev_is_active (w)))
4209 return; 4996 return;
4210 4997
4211 { 4998 {
4212 EV_P = w->other; 4999 EV_P = w->other;
4213 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5000 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4232 5019
4233 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
4234} 5021}
4235 5022
4236void 5023void
4237ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5024ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4238{ 5025{
4239 clear_pending (EV_A_ (W)w); 5026 clear_pending (EV_A_ (W)w);
4240 if (expect_false (!ev_is_active (w))) 5027 if (ecb_expect_false (!ev_is_active (w)))
4241 return; 5028 return;
4242 5029
4243 EV_FREQUENT_CHECK; 5030 EV_FREQUENT_CHECK;
4244 5031
4245 ev_io_stop (EV_A_ &w->io); 5032 ev_io_stop (EV_A_ &w->io);
… …
4252} 5039}
4253#endif 5040#endif
4254 5041
4255#if EV_FORK_ENABLE 5042#if EV_FORK_ENABLE
4256void 5043void
4257ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5044ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4258{ 5045{
4259 if (expect_false (ev_is_active (w))) 5046 if (ecb_expect_false (ev_is_active (w)))
4260 return; 5047 return;
4261 5048
4262 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
4263 5050
4264 ev_start (EV_A_ (W)w, ++forkcnt); 5051 ev_start (EV_A_ (W)w, ++forkcnt);
4265 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5052 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4266 forks [forkcnt - 1] = w; 5053 forks [forkcnt - 1] = w;
4267 5054
4268 EV_FREQUENT_CHECK; 5055 EV_FREQUENT_CHECK;
4269} 5056}
4270 5057
4271void 5058void
4272ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5059ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4273{ 5060{
4274 clear_pending (EV_A_ (W)w); 5061 clear_pending (EV_A_ (W)w);
4275 if (expect_false (!ev_is_active (w))) 5062 if (ecb_expect_false (!ev_is_active (w)))
4276 return; 5063 return;
4277 5064
4278 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
4279 5066
4280 { 5067 {
… …
4290} 5077}
4291#endif 5078#endif
4292 5079
4293#if EV_CLEANUP_ENABLE 5080#if EV_CLEANUP_ENABLE
4294void 5081void
4295ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5082ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4296{ 5083{
4297 if (expect_false (ev_is_active (w))) 5084 if (ecb_expect_false (ev_is_active (w)))
4298 return; 5085 return;
4299 5086
4300 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
4301 5088
4302 ev_start (EV_A_ (W)w, ++cleanupcnt); 5089 ev_start (EV_A_ (W)w, ++cleanupcnt);
4303 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5090 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4304 cleanups [cleanupcnt - 1] = w; 5091 cleanups [cleanupcnt - 1] = w;
4305 5092
4306 /* cleanup watchers should never keep a refcount on the loop */ 5093 /* cleanup watchers should never keep a refcount on the loop */
4307 ev_unref (EV_A); 5094 ev_unref (EV_A);
4308 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
4309} 5096}
4310 5097
4311void 5098void
4312ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5099ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4313{ 5100{
4314 clear_pending (EV_A_ (W)w); 5101 clear_pending (EV_A_ (W)w);
4315 if (expect_false (!ev_is_active (w))) 5102 if (ecb_expect_false (!ev_is_active (w)))
4316 return; 5103 return;
4317 5104
4318 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
4319 ev_ref (EV_A); 5106 ev_ref (EV_A);
4320 5107
… …
4331} 5118}
4332#endif 5119#endif
4333 5120
4334#if EV_ASYNC_ENABLE 5121#if EV_ASYNC_ENABLE
4335void 5122void
4336ev_async_start (EV_P_ ev_async *w) EV_THROW 5123ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4337{ 5124{
4338 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
4339 return; 5126 return;
4340 5127
4341 w->sent = 0; 5128 w->sent = 0;
4342 5129
4343 evpipe_init (EV_A); 5130 evpipe_init (EV_A);
4344 5131
4345 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4346 5133
4347 ev_start (EV_A_ (W)w, ++asynccnt); 5134 ev_start (EV_A_ (W)w, ++asynccnt);
4348 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5135 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4349 asyncs [asynccnt - 1] = w; 5136 asyncs [asynccnt - 1] = w;
4350 5137
4351 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4352} 5139}
4353 5140
4354void 5141void
4355ev_async_stop (EV_P_ ev_async *w) EV_THROW 5142ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4356{ 5143{
4357 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4358 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4359 return; 5146 return;
4360 5147
4361 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4362 5149
4363 { 5150 {
… …
4371 5158
4372 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
4373} 5160}
4374 5161
4375void 5162void
4376ev_async_send (EV_P_ ev_async *w) EV_THROW 5163ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4377{ 5164{
4378 w->sent = 1; 5165 w->sent = 1;
4379 evpipe_write (EV_A_ &async_pending); 5166 evpipe_write (EV_A_ &async_pending);
4380} 5167}
4381#endif 5168#endif
… …
4418 5205
4419 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5206 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4420} 5207}
4421 5208
4422void 5209void
4423ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5210ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4424{ 5211{
4425 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5212 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4426
4427 if (expect_false (!once))
4428 {
4429 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4430 return;
4431 }
4432 5213
4433 once->cb = cb; 5214 once->cb = cb;
4434 once->arg = arg; 5215 once->arg = arg;
4435 5216
4436 ev_init (&once->io, once_cb_io); 5217 ev_init (&once->io, once_cb_io);
… …
4449} 5230}
4450 5231
4451/*****************************************************************************/ 5232/*****************************************************************************/
4452 5233
4453#if EV_WALK_ENABLE 5234#if EV_WALK_ENABLE
4454void ecb_cold 5235ecb_cold
5236void
4455ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5237ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4456{ 5238{
4457 int i, j; 5239 int i, j;
4458 ev_watcher_list *wl, *wn; 5240 ev_watcher_list *wl, *wn;
4459 5241
4460 if (types & (EV_IO | EV_EMBED)) 5242 if (types & (EV_IO | EV_EMBED))

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