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Comparing libev/ev.c (file contents):
Revision 1.412 by root, Wed Feb 22 01:53:00 2012 UTC vs.
Revision 1.483 by root, Tue Jul 31 04:45:58 2018 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
162# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
163# endif 163# endif
164 164
165#endif 165#endif
166 166
167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
167#include <stdlib.h> 177#include <stdlib.h>
168#include <string.h> 178#include <string.h>
169#include <fcntl.h> 179#include <fcntl.h>
170#include <stddef.h> 180#include <stddef.h>
171 181
… …
201# include <sys/wait.h> 211# include <sys/wait.h>
202# include <unistd.h> 212# include <unistd.h>
203#else 213#else
204# include <io.h> 214# include <io.h>
205# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
206# include <windows.h> 217# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
209# endif 220# endif
210# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
211#endif 222#endif
212 223
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220
221/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
222 225
223/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
224#if defined (EV_NSIG) 227#if defined EV_NSIG
225/* use what's provided */ 228/* use what's provided */
226#elif defined (NSIG) 229#elif defined NSIG
227# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
228#elif defined(_NSIG) 231#elif defined _NSIG
229# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX) 233#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX) 235#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG) 239#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG) 241#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
240#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined (_sys_nsig) 245#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 247#else
245# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 249#endif
250 250
251#ifndef EV_USE_FLOOR 251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 252# define EV_USE_FLOOR 0
253#endif 253#endif
254 254
255#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 258# else
259# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
260# endif 260# endif
261#endif 261#endif
262 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
263#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
265# define EV_USE_MONOTONIC EV_FEATURE_OS 274# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else 275# else
267# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
268# endif 277# endif
269#endif 278#endif
… …
356 365
357#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 368#endif
360 369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
384#endif
385
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 389# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
369# else 394# else
… …
372# endif 397# endif
373#endif 398#endif
374 399
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 400/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 401
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 402#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
386#endif 405#endif
387 406
… …
395# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
396#endif 415#endif
397 416
398#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
399/* hp-ux has it in sys/time.h, which we unconditionally include above */ 418/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux) 419# if !defined _WIN32 && !defined __hpux
401# include <sys/select.h> 420# include <sys/select.h>
402# endif 421# endif
403#endif 422#endif
404 423
405#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
… …
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
412# endif 431# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 432#endif
418 433
419#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 436# include <stdint.h>
… …
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 494/* ECB.H BEGIN */
480/* 495/*
481 * libecb - http://software.schmorp.de/pkg/libecb 496 * libecb - http://software.schmorp.de/pkg/libecb
482 * 497 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 499 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 500 * All rights reserved.
486 * 501 *
487 * Redistribution and use in source and binary forms, with or without modifica- 502 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 503 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
507 */ 533 */
508 534
509#ifndef ECB_H 535#ifndef ECB_H
510#define ECB_H 536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
511 540
512#ifdef _WIN32 541#ifdef _WIN32
513 typedef signed char int8_t; 542 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 543 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 544 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 550 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 551 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 552 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 553 typedef unsigned __int64 uint64_t;
525 #endif 554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
526#else 564#else
527 #include <inttypes.h> 565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
528#endif 583#endif
529 584
530/* many compilers define _GNUC_ to some versions but then only implement 585/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 586 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 587 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 588 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 589 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place. 590 * an issue with that they should have done it right in the first place.
536 */ 591 */
537#ifndef ECB_GCC_VERSION
538 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 593 #define ECB_GCC_VERSION(major,minor) 0
540 #else 594#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
625
626#if ECB_CPP
627 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END }
630#else
631 #define ECB_EXTERN_C extern
632 #define ECB_EXTERN_C_BEG
633 #define ECB_EXTERN_C_END
543#endif 634#endif
544 635
545/*****************************************************************************/ 636/*****************************************************************************/
546 637
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 638/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 639/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 640
550#if ECB_NO_THREADS 641#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 642 #define ECB_NO_SMP 1
552#endif 643#endif
553 644
554#if ECB_NO_THREADS || ECB_NO_SMP 645#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 646 #define ECB_MEMORY_FENCE do { } while (0)
556#endif 647#endif
557 648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
656#endif
657
558#ifndef ECB_MEMORY_FENCE 658#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__ 660 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 664 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__) 690 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined(__mips__) 692 #elif defined __mips__
693 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
694 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
696 #elif defined __alpha__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
698 #elif defined __hppa__
699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
701 #elif defined __ia64__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
703 #elif defined __m68k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
705 #elif defined __m88k__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
707 #elif defined __sh__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
584 #endif 709 #endif
585 #endif 710 #endif
586#endif 711#endif
587 712
588#ifndef ECB_MEMORY_FENCE 713#ifndef ECB_MEMORY_FENCE
714 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
719
720 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
725
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize () 727 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32) 739 #elif defined _WIN32
599 #include <WinNT.h> 740 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h> 743 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier () 744 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 746 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
747 #elif __xlC__
748 #define ECB_MEMORY_FENCE __sync ()
749 #endif
750#endif
751
752#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
606 #endif 766 #endif
607#endif 767#endif
608 768
609#ifndef ECB_MEMORY_FENCE 769#ifndef ECB_MEMORY_FENCE
610 #if !ECB_AVOID_PTHREADS 770 #if !ECB_AVOID_PTHREADS
… …
622 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 782 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
623 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 783 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
624 #endif 784 #endif
625#endif 785#endif
626 786
627#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 787#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
628 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
629#endif 789#endif
630 790
631#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
633#endif 793#endif
634 794
635/*****************************************************************************/ 795/*****************************************************************************/
636 796
637#define ECB_C99 (__STDC_VERSION__ >= 199901L) 797#if ECB_CPP
638
639#if __cplusplus
640 #define ecb_inline static inline 798 #define ecb_inline static inline
641#elif ECB_GCC_VERSION(2,5) 799#elif ECB_GCC_VERSION(2,5)
642 #define ecb_inline static __inline__ 800 #define ecb_inline static __inline__
643#elif ECB_C99 801#elif ECB_C99
644 #define ecb_inline static inline 802 #define ecb_inline static inline
… …
658 816
659#define ECB_CONCAT_(a, b) a ## b 817#define ECB_CONCAT_(a, b) a ## b
660#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
661#define ECB_STRINGIFY_(a) # a 819#define ECB_STRINGIFY_(a) # a
662#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
663 822
664#define ecb_function_ ecb_inline 823#define ecb_function_ ecb_inline
665 824
666#if ECB_GCC_VERSION(3,1) 825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
667 #define ecb_attribute(attrlist) __attribute__(attrlist) 826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
668 #define ecb_is_constant(expr) __builtin_constant_p (expr) 832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
669 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
843#else
844 #define ecb_expect(expr,value) (expr)
845#endif
846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
670 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
671#else 849#else
672 #define ecb_attribute(attrlist)
673 #define ecb_is_constant(expr) 0
674 #define ecb_expect(expr,value) (expr)
675 #define ecb_prefetch(addr,rw,locality) 850 #define ecb_prefetch(addr,rw,locality)
676#endif 851#endif
677 852
678/* no emulation for ecb_decltype */ 853/* no emulation for ecb_decltype */
679#if ECB_GCC_VERSION(4,5) 854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
680 #define ecb_decltype(x) __decltype(x) 857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
681#elif ECB_GCC_VERSION(3,0) 858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
682 #define ecb_decltype(x) __typeof(x) 859 #define ecb_decltype(x) __typeof__ (x)
683#endif 860#endif
684 861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
685#define ecb_noinline ecb_attribute ((__noinline__)) 879 #define ecb_noinline ecb_attribute ((__noinline__))
686#define ecb_noreturn ecb_attribute ((__noreturn__)) 880#endif
881
687#define ecb_unused ecb_attribute ((__unused__)) 882#define ecb_unused ecb_attribute ((__unused__))
688#define ecb_const ecb_attribute ((__const__)) 883#define ecb_const ecb_attribute ((__const__))
689#define ecb_pure ecb_attribute ((__pure__)) 884#define ecb_pure ecb_attribute ((__pure__))
885
886#if ECB_C11 || __IBMC_NORETURN
887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
894#else
895 #define ecb_noreturn ecb_attribute ((__noreturn__))
896#endif
690 897
691#if ECB_GCC_VERSION(4,3) 898#if ECB_GCC_VERSION(4,3)
692 #define ecb_artificial ecb_attribute ((__artificial__)) 899 #define ecb_artificial ecb_attribute ((__artificial__))
693 #define ecb_hot ecb_attribute ((__hot__)) 900 #define ecb_hot ecb_attribute ((__hot__))
694 #define ecb_cold ecb_attribute ((__cold__)) 901 #define ecb_cold ecb_attribute ((__cold__))
… …
706/* for compatibility to the rest of the world */ 913/* for compatibility to the rest of the world */
707#define ecb_likely(expr) ecb_expect_true (expr) 914#define ecb_likely(expr) ecb_expect_true (expr)
708#define ecb_unlikely(expr) ecb_expect_false (expr) 915#define ecb_unlikely(expr) ecb_expect_false (expr)
709 916
710/* count trailing zero bits and count # of one bits */ 917/* count trailing zero bits and count # of one bits */
711#if ECB_GCC_VERSION(3,4) 918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
712 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
713 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
714 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
715 #define ecb_ctz32(x) __builtin_ctz (x) 925 #define ecb_ctz32(x) __builtin_ctz (x)
716 #define ecb_ctz64(x) __builtin_ctzll (x) 926 #define ecb_ctz64(x) __builtin_ctzll (x)
717 #define ecb_popcount32(x) __builtin_popcount (x) 927 #define ecb_popcount32(x) __builtin_popcount (x)
718 /* no popcountll */ 928 /* no popcountll */
719#else 929#else
720 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
721 ecb_function_ int 931 ecb_function_ ecb_const int
722 ecb_ctz32 (uint32_t x) 932 ecb_ctz32 (uint32_t x)
723 { 933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
724 int r = 0; 939 int r = 0;
725 940
726 x &= ~x + 1; /* this isolates the lowest bit */ 941 x &= ~x + 1; /* this isolates the lowest bit */
727 942
728#if ECB_branchless_on_i386 943#if ECB_branchless_on_i386
… …
738 if (x & 0xff00ff00) r += 8; 953 if (x & 0xff00ff00) r += 8;
739 if (x & 0xffff0000) r += 16; 954 if (x & 0xffff0000) r += 16;
740#endif 955#endif
741 956
742 return r; 957 return r;
958#endif
743 } 959 }
744 960
745 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
746 ecb_function_ int 962 ecb_function_ ecb_const int
747 ecb_ctz64 (uint64_t x) 963 ecb_ctz64 (uint64_t x)
748 { 964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
749 int shift = x & 0xffffffffU ? 0 : 32; 970 int shift = x & 0xffffffff ? 0 : 32;
750 return ecb_ctz32 (x >> shift) + shift; 971 return ecb_ctz32 (x >> shift) + shift;
972#endif
751 } 973 }
752 974
753 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
754 ecb_function_ int 976 ecb_function_ ecb_const int
755 ecb_popcount32 (uint32_t x) 977 ecb_popcount32 (uint32_t x)
756 { 978 {
757 x -= (x >> 1) & 0x55555555; 979 x -= (x >> 1) & 0x55555555;
758 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
759 x = ((x >> 4) + x) & 0x0f0f0f0f; 981 x = ((x >> 4) + x) & 0x0f0f0f0f;
760 x *= 0x01010101; 982 x *= 0x01010101;
761 983
762 return x >> 24; 984 return x >> 24;
763 } 985 }
764 986
765 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
766 ecb_function_ int ecb_ld32 (uint32_t x) 988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
767 { 989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
768 int r = 0; 995 int r = 0;
769 996
770 if (x >> 16) { x >>= 16; r += 16; } 997 if (x >> 16) { x >>= 16; r += 16; }
771 if (x >> 8) { x >>= 8; r += 8; } 998 if (x >> 8) { x >>= 8; r += 8; }
772 if (x >> 4) { x >>= 4; r += 4; } 999 if (x >> 4) { x >>= 4; r += 4; }
773 if (x >> 2) { x >>= 2; r += 2; } 1000 if (x >> 2) { x >>= 2; r += 2; }
774 if (x >> 1) { r += 1; } 1001 if (x >> 1) { r += 1; }
775 1002
776 return r; 1003 return r;
1004#endif
777 } 1005 }
778 1006
779 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
780 ecb_function_ int ecb_ld64 (uint64_t x) 1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
781 { 1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
782 int r = 0; 1015 int r = 0;
783 1016
784 if (x >> 32) { x >>= 32; r += 32; } 1017 if (x >> 32) { x >>= 32; r += 32; }
785 1018
786 return r + ecb_ld32 (x); 1019 return r + ecb_ld32 (x);
1020#endif
787 } 1021 }
788#endif 1022#endif
789 1023
1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1028
790ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
792{ 1031{
793 return ( (x * 0x0802U & 0x22110U) 1032 return ( (x * 0x0802U & 0x22110U)
794 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
795} 1034}
796 1035
797ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
799{ 1038{
800 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
801 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
802 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
803 x = ( x >> 8 ) | ( x << 8); 1042 x = ( x >> 8 ) | ( x << 8);
804 1043
805 return x; 1044 return x;
806} 1045}
807 1046
808ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
810{ 1049{
811 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
812 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
813 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
814 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
817 return x; 1056 return x;
818} 1057}
819 1058
820/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
821/* so for this version we are lazy */ 1060/* so for this version we are lazy */
822ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
823ecb_function_ int 1062ecb_function_ ecb_const int
824ecb_popcount64 (uint64_t x) 1063ecb_popcount64 (uint64_t x)
825{ 1064{
826 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
827} 1066}
828 1067
829ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
830ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
831ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
832ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
833ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
834ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
835ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
836ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
837 1076
838ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
839ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
840ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
841ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
842ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
843ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
844ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
845ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
846 1085
847#if ECB_GCC_VERSION(4,3) 1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
848 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
849 #define ecb_bswap32(x) __builtin_bswap32 (x) 1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
850 #define ecb_bswap64(x) __builtin_bswap64 (x) 1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
851#else 1099#else
852 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
853 ecb_function_ uint16_t 1101 ecb_function_ ecb_const uint16_t
854 ecb_bswap16 (uint16_t x) 1102 ecb_bswap16 (uint16_t x)
855 { 1103 {
856 return ecb_rotl16 (x, 8); 1104 return ecb_rotl16 (x, 8);
857 } 1105 }
858 1106
859 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
860 ecb_function_ uint32_t 1108 ecb_function_ ecb_const uint32_t
861 ecb_bswap32 (uint32_t x) 1109 ecb_bswap32 (uint32_t x)
862 { 1110 {
863 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
864 } 1112 }
865 1113
866 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
867 ecb_function_ uint64_t 1115 ecb_function_ ecb_const uint64_t
868 ecb_bswap64 (uint64_t x) 1116 ecb_bswap64 (uint64_t x)
869 { 1117 {
870 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
871 } 1119 }
872#endif 1120#endif
873 1121
874#if ECB_GCC_VERSION(4,5) 1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
875 #define ecb_unreachable() __builtin_unreachable () 1123 #define ecb_unreachable() __builtin_unreachable ()
876#else 1124#else
877 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
878 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
879 ecb_inline void ecb_unreachable (void) { } 1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
880#endif 1128#endif
881 1129
882/* try to tell the compiler that some condition is definitely true */ 1130/* try to tell the compiler that some condition is definitely true */
883#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
884 1132
885ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
886ecb_inline unsigned char 1134ecb_inline ecb_const uint32_t
887ecb_byteorder_helper (void) 1135ecb_byteorder_helper (void)
888{ 1136{
889 const uint32_t u = 0x11223344; 1137 /* the union code still generates code under pressure in gcc, */
890 return *(unsigned char *)&u; 1138 /* but less than using pointers, and always seems to */
1139 /* successfully return a constant. */
1140 /* the reason why we have this horrible preprocessor mess */
1141 /* is to avoid it in all cases, at least on common architectures */
1142 /* or when using a recent enough gcc version (>= 4.6) */
1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1146 return 0x44332211;
1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1150 return 0x11223344;
1151#else
1152 union
1153 {
1154 uint8_t c[4];
1155 uint32_t u;
1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1157 return u.u;
1158#endif
891} 1159}
892 1160
893ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
894ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
895ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
896ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
897 1165
898#if ECB_GCC_VERSION(3,0) || ECB_C99 1166#if ECB_GCC_VERSION(3,0) || ECB_C99
899 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
900#else 1168#else
901 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
902#endif 1170#endif
903 1171
904#if __cplusplus 1172#if ECB_CPP
905 template<typename T> 1173 template<typename T>
906 static inline T ecb_div_rd (T val, T div) 1174 static inline T ecb_div_rd (T val, T div)
907 { 1175 {
908 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
909 } 1177 }
… …
926 } 1194 }
927#else 1195#else
928 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
929#endif 1197#endif
930 1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1295/*******************************************************************************/
1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1297
1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1300#if 0 \
1301 || __i386 || __i386__ \
1302 || ECB_GCC_AMD64 \
1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1304 || defined __s390__ || defined __s390x__ \
1305 || defined __mips__ \
1306 || defined __alpha__ \
1307 || defined __hppa__ \
1308 || defined __ia64__ \
1309 || defined __m68k__ \
1310 || defined __m88k__ \
1311 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1315 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else
1318 #define ECB_STDFP 0
1319#endif
1320
1321#ifndef ECB_NO_LIBM
1322
1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1332 #ifdef NAN
1333 #define ECB_NAN NAN
1334 #else
1335 #define ECB_NAN ECB_INFINITY
1336 #endif
1337
1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1341 #else
1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1344 #endif
1345
1346 /* convert a float to ieee single/binary32 */
1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1348 ecb_function_ ecb_const uint32_t
1349 ecb_float_to_binary32 (float x)
1350 {
1351 uint32_t r;
1352
1353 #if ECB_STDFP
1354 memcpy (&r, &x, 4);
1355 #else
1356 /* slow emulation, works for anything but -0 */
1357 uint32_t m;
1358 int e;
1359
1360 if (x == 0e0f ) return 0x00000000U;
1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1363 if (x != x ) return 0x7fbfffffU;
1364
1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1366
1367 r = m & 0x80000000U;
1368
1369 if (r)
1370 m = -m;
1371
1372 if (e <= -126)
1373 {
1374 m &= 0xffffffU;
1375 m >>= (-125 - e);
1376 e = -126;
1377 }
1378
1379 r |= (e + 126) << 23;
1380 r |= m & 0x7fffffU;
1381 #endif
1382
1383 return r;
1384 }
1385
1386 /* converts an ieee single/binary32 to a float */
1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1388 ecb_function_ ecb_const float
1389 ecb_binary32_to_float (uint32_t x)
1390 {
1391 float r;
1392
1393 #if ECB_STDFP
1394 memcpy (&r, &x, 4);
1395 #else
1396 /* emulation, only works for normals and subnormals and +0 */
1397 int neg = x >> 31;
1398 int e = (x >> 23) & 0xffU;
1399
1400 x &= 0x7fffffU;
1401
1402 if (e)
1403 x |= 0x800000U;
1404 else
1405 e = 1;
1406
1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1409
1410 r = neg ? -r : r;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* convert a double to ieee double/binary64 */
1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1418 ecb_function_ ecb_const uint64_t
1419 ecb_double_to_binary64 (double x)
1420 {
1421 uint64_t r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 8);
1425 #else
1426 /* slow emulation, works for anything but -0 */
1427 uint64_t m;
1428 int e;
1429
1430 if (x == 0e0 ) return 0x0000000000000000U;
1431 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1432 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1433 if (x != x ) return 0X7ff7ffffffffffffU;
1434
1435 m = frexp (x, &e) * 0x20000000000000U;
1436
1437 r = m & 0x8000000000000000;;
1438
1439 if (r)
1440 m = -m;
1441
1442 if (e <= -1022)
1443 {
1444 m &= 0x1fffffffffffffU;
1445 m >>= (-1021 - e);
1446 e = -1022;
1447 }
1448
1449 r |= ((uint64_t)(e + 1022)) << 52;
1450 r |= m & 0xfffffffffffffU;
1451 #endif
1452
1453 return r;
1454 }
1455
1456 /* converts an ieee double/binary64 to a double */
1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1458 ecb_function_ ecb_const double
1459 ecb_binary64_to_double (uint64_t x)
1460 {
1461 double r;
1462
1463 #if ECB_STDFP
1464 memcpy (&r, &x, 8);
1465 #else
1466 /* emulation, only works for normals and subnormals and +0 */
1467 int neg = x >> 63;
1468 int e = (x >> 52) & 0x7ffU;
1469
1470 x &= 0xfffffffffffffU;
1471
1472 if (e)
1473 x |= 0x10000000000000U;
1474 else
1475 e = 1;
1476
1477 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1478 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1479
1480 r = neg ? -r : r;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1500 }
1501
1502#endif
1503
931#endif 1504#endif
932 1505
933/* ECB.H END */ 1506/* ECB.H END */
934 1507
935#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
956#define inline_size ecb_inline 1529#define inline_size ecb_inline
957 1530
958#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
959# define inline_speed ecb_inline 1532# define inline_speed ecb_inline
960#else 1533#else
961# define inline_speed static noinline 1534# define inline_speed noinline static
962#endif 1535#endif
963 1536
964#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
965 1538
966#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
1013#else 1586#else
1014 1587
1015#include <float.h> 1588#include <float.h>
1016 1589
1017/* a floor() replacement function, should be independent of ev_tstamp type */ 1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1018static ev_tstamp noinline 1592static ev_tstamp
1019ev_floor (ev_tstamp v) 1593ev_floor (ev_tstamp v)
1020{ 1594{
1021 /* the choice of shift factor is not terribly important */ 1595 /* the choice of shift factor is not terribly important */
1022#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1055 1629
1056#ifdef __linux 1630#ifdef __linux
1057# include <sys/utsname.h> 1631# include <sys/utsname.h>
1058#endif 1632#endif
1059 1633
1060static unsigned int noinline ecb_cold 1634noinline ecb_cold
1635static unsigned int
1061ev_linux_version (void) 1636ev_linux_version (void)
1062{ 1637{
1063#ifdef __linux 1638#ifdef __linux
1064 unsigned int v = 0; 1639 unsigned int v = 0;
1065 struct utsname buf; 1640 struct utsname buf;
… …
1094} 1669}
1095 1670
1096/*****************************************************************************/ 1671/*****************************************************************************/
1097 1672
1098#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
1099static void noinline ecb_cold 1674noinline ecb_cold
1675static void
1100ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
1101{ 1677{
1102 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
1103} 1679}
1104#endif 1680#endif
1105 1681
1106static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_THROW;
1107 1683
1108void ecb_cold 1684ecb_cold
1685void
1109ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1110{ 1687{
1111 syserr_cb = cb; 1688 syserr_cb = cb;
1112} 1689}
1113 1690
1114static void noinline ecb_cold 1691noinline ecb_cold
1692static void
1115ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
1116{ 1694{
1117 if (!msg) 1695 if (!msg)
1118 msg = "(libev) system error"; 1696 msg = "(libev) system error";
1119 1697
… …
1132 abort (); 1710 abort ();
1133 } 1711 }
1134} 1712}
1135 1713
1136static void * 1714static void *
1137ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_THROW
1138{ 1716{
1139#if __GLIBC__
1140 return realloc (ptr, size);
1141#else
1142 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
1143 * implement realloc (x, 0) (as required by both ansi c-89 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
1144 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1720 * recently, also (at least) fedora and debian started breaking it,
1721 * despite documenting it otherwise.
1145 */ 1722 */
1146 1723
1147 if (size) 1724 if (size)
1148 return realloc (ptr, size); 1725 return realloc (ptr, size);
1149 1726
1150 free (ptr); 1727 free (ptr);
1151 return 0; 1728 return 0;
1152#endif
1153} 1729}
1154 1730
1155static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1156 1732
1157void ecb_cold 1733ecb_cold
1734void
1158ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1159{ 1736{
1160 alloc = cb; 1737 alloc = cb;
1161} 1738}
1162 1739
1163inline_speed void * 1740inline_speed void *
… …
1280 1857
1281/*****************************************************************************/ 1858/*****************************************************************************/
1282 1859
1283#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
1284ev_tstamp 1861ev_tstamp
1285ev_time (void) 1862ev_time (void) EV_THROW
1286{ 1863{
1287#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
1288 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
1289 { 1866 {
1290 struct timespec ts; 1867 struct timespec ts;
… …
1314 return ev_time (); 1891 return ev_time ();
1315} 1892}
1316 1893
1317#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
1318ev_tstamp 1895ev_tstamp
1319ev_now (EV_P) 1896ev_now (EV_P) EV_THROW
1320{ 1897{
1321 return ev_rt_now; 1898 return ev_rt_now;
1322} 1899}
1323#endif 1900#endif
1324 1901
1325void 1902void
1326ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_THROW
1327{ 1904{
1328 if (delay > 0.) 1905 if (delay > 0.)
1329 { 1906 {
1330#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
1331 struct timespec ts; 1908 struct timespec ts;
1332 1909
1333 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
1334 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
1335#elif defined(_WIN32) 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
1336 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
1337#else 1916#else
1338 struct timeval tv; 1917 struct timeval tv;
1339 1918
1340 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1371 } 1950 }
1372 1951
1373 return ncur; 1952 return ncur;
1374} 1953}
1375 1954
1376static void * noinline ecb_cold 1955noinline ecb_cold
1956static void *
1377array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
1378{ 1958{
1379 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
1380 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
1381} 1961}
… …
1384 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1385 1965
1386#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
1387 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
1388 { \ 1968 { \
1389 int ecb_unused ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
1390 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
1391 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
1392 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
1393 } 1973 }
1394 1974
… …
1406 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1407 1987
1408/*****************************************************************************/ 1988/*****************************************************************************/
1409 1989
1410/* dummy callback for pending events */ 1990/* dummy callback for pending events */
1411static void noinline 1991noinline
1992static void
1412pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
1413{ 1994{
1414} 1995}
1415 1996
1416void noinline 1997noinline
1998void
1417ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1418{ 2000{
1419 W w_ = (W)w; 2001 W w_ = (W)w;
1420 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
1421 2003
1422 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
1426 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
1427 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1428 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
1429 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
1430 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
1431} 2015}
1432 2016
1433inline_speed void 2017inline_speed void
1434feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
1435{ 2019{
… …
1481 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
1482 fd_event_nocheck (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
1483} 2067}
1484 2068
1485void 2069void
1486ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1487{ 2071{
1488 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
1489 fd_event_nocheck (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
1490} 2074}
1491 2075
… …
1549 2133
1550 fdchangecnt = 0; 2134 fdchangecnt = 0;
1551} 2135}
1552 2136
1553/* something about the given fd changed */ 2137/* something about the given fd changed */
1554inline_size void 2138inline_size
2139void
1555fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1556{ 2141{
1557 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1558 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1559 2144
… …
1564 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1565 } 2150 }
1566} 2151}
1567 2152
1568/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1569inline_speed void ecb_cold 2154inline_speed ecb_cold void
1570fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1571{ 2156{
1572 ev_io *w; 2157 ev_io *w;
1573 2158
1574 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
1577 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1578 } 2163 }
1579} 2164}
1580 2165
1581/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
1582inline_size int ecb_cold 2167inline_size ecb_cold int
1583fd_valid (int fd) 2168fd_valid (int fd)
1584{ 2169{
1585#ifdef _WIN32 2170#ifdef _WIN32
1586 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1587#else 2172#else
1588 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1589#endif 2174#endif
1590} 2175}
1591 2176
1592/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1593static void noinline ecb_cold 2178noinline ecb_cold
2179static void
1594fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1595{ 2181{
1596 int fd; 2182 int fd;
1597 2183
1598 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1600 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1601 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1602} 2188}
1603 2189
1604/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
1605static void noinline ecb_cold 2191noinline ecb_cold
2192static void
1606fd_enomem (EV_P) 2193fd_enomem (EV_P)
1607{ 2194{
1608 int fd; 2195 int fd;
1609 2196
1610 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1614 break; 2201 break;
1615 } 2202 }
1616} 2203}
1617 2204
1618/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
1619static void noinline 2206noinline
2207static void
1620fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1621{ 2209{
1622 int fd; 2210 int fd;
1623 2211
1624 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1805 2393
1806/*****************************************************************************/ 2394/*****************************************************************************/
1807 2395
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1809 2397
1810static void noinline ecb_cold 2398noinline ecb_cold
2399static void
1811evpipe_init (EV_P) 2400evpipe_init (EV_P)
1812{ 2401{
1813 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
1814 { 2403 {
2404 int fds [2];
2405
1815# if EV_USE_EVENTFD 2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
1816 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1817 if (evfd < 0 && errno == EINVAL) 2409 if (fds [1] < 0 && errno == EINVAL)
1818 evfd = eventfd (0, 0); 2410 fds [1] = eventfd (0, 0);
1819 2411
1820 if (evfd >= 0) 2412 if (fds [1] < 0)
2413# endif
1821 { 2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
1822 evpipe [0] = -1; 2421 evpipe [0] = fds [0];
1823 fd_intern (evfd); /* doing it twice doesn't hurt */ 2422
1824 ev_io_set (&pipe_w, evfd, EV_READ); 2423 if (evpipe [1] < 0)
2424 evpipe [1] = fds [1]; /* first call, set write fd */
2425 else
2426 {
2427 /* on subsequent calls, do not change evpipe [1] */
2428 /* so that evpipe_write can always rely on its value. */
2429 /* this branch does not do anything sensible on windows, */
2430 /* so must not be executed on windows */
2431
2432 dup2 (fds [1], evpipe [1]);
2433 close (fds [1]);
2434 }
2435
2436 fd_intern (evpipe [1]);
2437
2438 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2439 ev_io_start (EV_A_ &pipe_w);
2440 ev_unref (EV_A); /* watcher should not keep loop alive */
2441 }
2442}
2443
2444inline_speed void
2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2446{
2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2448
2449 if (expect_true (*flag))
2450 return;
2451
2452 *flag = 1;
2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2454
2455 pipe_write_skipped = 1;
2456
2457 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2458
2459 if (pipe_write_wanted)
2460 {
2461 int old_errno;
2462
2463 pipe_write_skipped = 0;
2464 ECB_MEMORY_FENCE_RELEASE;
2465
2466 old_errno = errno; /* save errno because write will clobber it */
2467
2468#if EV_USE_EVENTFD
2469 if (evpipe [0] < 0)
2470 {
2471 uint64_t counter = 1;
2472 write (evpipe [1], &counter, sizeof (uint64_t));
1825 } 2473 }
1826 else 2474 else
1827# endif 2475#endif
1828 { 2476 {
1829 while (pipe (evpipe)) 2477#ifdef _WIN32
1830 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1831 2479 DWORD sent;
1832 fd_intern (evpipe [0]); 2480 buf.buf = &buf;
1833 fd_intern (evpipe [1]); 2481 buf.len = 1;
1834 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1835 } 2483#else
1836
1837 ev_io_start (EV_A_ &pipe_w);
1838 ev_unref (EV_A); /* watcher should not keep loop alive */
1839 }
1840}
1841
1842inline_speed void
1843evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1844{
1845 if (expect_true (*flag))
1846 return;
1847
1848 *flag = 1;
1849
1850 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1851
1852 pipe_write_skipped = 1;
1853
1854 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1855
1856 if (pipe_write_wanted)
1857 {
1858 int old_errno;
1859
1860 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1861
1862 old_errno = errno; /* save errno because write will clobber it */
1863
1864#if EV_USE_EVENTFD
1865 if (evfd >= 0)
1866 {
1867 uint64_t counter = 1;
1868 write (evfd, &counter, sizeof (uint64_t));
1869 }
1870 else
1871#endif
1872 {
1873 /* win32 people keep sending patches that change this write() to send() */
1874 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1875 /* so when you think this write should be a send instead, please find out */
1876 /* where your send() is from - it's definitely not the microsoft send, and */
1877 /* tell me. thank you. */
1878 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1879 /* check the ev documentation on how to use this flag */
1880 write (evpipe [1], &(evpipe [1]), 1); 2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1881 } 2486 }
1882 2487
1883 errno = old_errno; 2488 errno = old_errno;
1884 } 2489 }
1885} 2490}
… …
1892 int i; 2497 int i;
1893 2498
1894 if (revents & EV_READ) 2499 if (revents & EV_READ)
1895 { 2500 {
1896#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1897 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1898 { 2503 {
1899 uint64_t counter; 2504 uint64_t counter;
1900 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1901 } 2506 }
1902 else 2507 else
1903#endif 2508#endif
1904 { 2509 {
1905 char dummy; 2510 char dummy[4];
1906 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2511#ifdef _WIN32
2512 WSABUF buf;
2513 DWORD recvd;
2514 DWORD flags = 0;
2515 buf.buf = dummy;
2516 buf.len = sizeof (dummy);
2517 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2518#else
1907 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
1908 } 2521 }
1909 } 2522 }
1910 2523
1911 pipe_write_skipped = 0; 2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1912 2527
1913#if EV_SIGNAL_ENABLE 2528#if EV_SIGNAL_ENABLE
1914 if (sig_pending) 2529 if (sig_pending)
1915 { 2530 {
1916 sig_pending = 0; 2531 sig_pending = 0;
2532
2533 ECB_MEMORY_FENCE;
1917 2534
1918 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1919 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1920 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1921 } 2538 }
… …
1923 2540
1924#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1925 if (async_pending) 2542 if (async_pending)
1926 { 2543 {
1927 async_pending = 0; 2544 async_pending = 0;
2545
2546 ECB_MEMORY_FENCE;
1928 2547
1929 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1930 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1931 { 2550 {
1932 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1933 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1934 } 2554 }
1935 } 2555 }
1936#endif 2556#endif
1937} 2557}
1938 2558
1939/*****************************************************************************/ 2559/*****************************************************************************/
1940 2560
1941void 2561void
1942ev_feed_signal (int signum) 2562ev_feed_signal (int signum) EV_THROW
1943{ 2563{
1944#if EV_MULTIPLICITY 2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
1945 EV_P = signals [signum - 1].loop; 2567 EV_A = signals [signum - 1].loop;
1946 2568
1947 if (!EV_A) 2569 if (!EV_A)
1948 return; 2570 return;
1949#endif 2571#endif
1950 2572
1951 if (!ev_active (&pipe_w))
1952 return;
1953
1954 signals [signum - 1].pending = 1; 2573 signals [signum - 1].pending = 1;
1955 evpipe_write (EV_A_ &sig_pending); 2574 evpipe_write (EV_A_ &sig_pending);
1956} 2575}
1957 2576
1958static void 2577static void
… …
1963#endif 2582#endif
1964 2583
1965 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
1966} 2585}
1967 2586
1968void noinline 2587noinline
2588void
1969ev_feed_signal_event (EV_P_ int signum) 2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
1970{ 2590{
1971 WL w; 2591 WL w;
1972 2592
1973 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1974 return; 2594 return;
1975 2595
1976 --signum; 2596 --signum;
1977 2597
1978#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
1982 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
1983 return; 2603 return;
1984#endif 2604#endif
1985 2605
1986 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1987 2608
1988 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1989 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1990} 2611}
1991 2612
… …
2089#endif 2710#endif
2090#if EV_USE_SELECT 2711#if EV_USE_SELECT
2091# include "ev_select.c" 2712# include "ev_select.c"
2092#endif 2713#endif
2093 2714
2094int ecb_cold 2715ecb_cold int
2095ev_version_major (void) 2716ev_version_major (void) EV_THROW
2096{ 2717{
2097 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
2098} 2719}
2099 2720
2100int ecb_cold 2721ecb_cold int
2101ev_version_minor (void) 2722ev_version_minor (void) EV_THROW
2102{ 2723{
2103 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
2104} 2725}
2105 2726
2106/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
2107int inline_size ecb_cold 2728inline_size ecb_cold int
2108enable_secure (void) 2729enable_secure (void)
2109{ 2730{
2110#ifdef _WIN32 2731#ifdef _WIN32
2111 return 0; 2732 return 0;
2112#else 2733#else
2113 return getuid () != geteuid () 2734 return getuid () != geteuid ()
2114 || getgid () != getegid (); 2735 || getgid () != getegid ();
2115#endif 2736#endif
2116} 2737}
2117 2738
2118unsigned int ecb_cold 2739ecb_cold
2740unsigned int
2119ev_supported_backends (void) 2741ev_supported_backends (void) EV_THROW
2120{ 2742{
2121 unsigned int flags = 0; 2743 unsigned int flags = 0;
2122 2744
2123 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2124 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2127 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2128 2750
2129 return flags; 2751 return flags;
2130} 2752}
2131 2753
2132unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2133ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_THROW
2134{ 2757{
2135 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
2136 2759
2137#ifndef __NetBSD__ 2760#ifndef __NetBSD__
2138 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
2149#endif 2772#endif
2150 2773
2151 return flags; 2774 return flags;
2152} 2775}
2153 2776
2154unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2155ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_THROW
2156{ 2780{
2157 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2158 2782
2159 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2160 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2162 2786
2163 return flags; 2787 return flags;
2164} 2788}
2165 2789
2166unsigned int 2790unsigned int
2167ev_backend (EV_P) 2791ev_backend (EV_P) EV_THROW
2168{ 2792{
2169 return backend; 2793 return backend;
2170} 2794}
2171 2795
2172#if EV_FEATURE_API 2796#if EV_FEATURE_API
2173unsigned int 2797unsigned int
2174ev_iteration (EV_P) 2798ev_iteration (EV_P) EV_THROW
2175{ 2799{
2176 return loop_count; 2800 return loop_count;
2177} 2801}
2178 2802
2179unsigned int 2803unsigned int
2180ev_depth (EV_P) 2804ev_depth (EV_P) EV_THROW
2181{ 2805{
2182 return loop_depth; 2806 return loop_depth;
2183} 2807}
2184 2808
2185void 2809void
2186ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2187{ 2811{
2188 io_blocktime = interval; 2812 io_blocktime = interval;
2189} 2813}
2190 2814
2191void 2815void
2192ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2193{ 2817{
2194 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
2195} 2819}
2196 2820
2197void 2821void
2198ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_THROW
2199{ 2823{
2200 userdata = data; 2824 userdata = data;
2201} 2825}
2202 2826
2203void * 2827void *
2204ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_THROW
2205{ 2829{
2206 return userdata; 2830 return userdata;
2207} 2831}
2208 2832
2209void 2833void
2210ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2211{ 2835{
2212 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
2213} 2837}
2214 2838
2215void 2839void
2216ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2217{ 2841{
2218 release_cb = release; 2842 release_cb = release;
2219 acquire_cb = acquire; 2843 acquire_cb = acquire;
2220} 2844}
2221#endif 2845#endif
2222 2846
2223/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
2224static void noinline ecb_cold 2848noinline ecb_cold
2849static void
2225loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_THROW
2226{ 2851{
2227 if (!backend) 2852 if (!backend)
2228 { 2853 {
2229 origflags = flags; 2854 origflags = flags;
2230 2855
… …
2275#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
2276 async_pending = 0; 2901 async_pending = 0;
2277#endif 2902#endif
2278 pipe_write_skipped = 0; 2903 pipe_write_skipped = 0;
2279 pipe_write_wanted = 0; 2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
2280#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
2281 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2282#endif 2909#endif
2283#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
2284 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2314#endif 2941#endif
2315 } 2942 }
2316} 2943}
2317 2944
2318/* free up a loop structure */ 2945/* free up a loop structure */
2319void ecb_cold 2946ecb_cold
2947void
2320ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
2321{ 2949{
2322 int i; 2950 int i;
2323 2951
2324#if EV_MULTIPLICITY 2952#if EV_MULTIPLICITY
… …
2335 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
2336 } 2964 }
2337#endif 2965#endif
2338 2966
2339#if EV_CHILD_ENABLE 2967#if EV_CHILD_ENABLE
2340 if (ev_is_active (&childev)) 2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2341 { 2969 {
2342 ev_ref (EV_A); /* child watcher */ 2970 ev_ref (EV_A); /* child watcher */
2343 ev_signal_stop (EV_A_ &childev); 2971 ev_signal_stop (EV_A_ &childev);
2344 } 2972 }
2345#endif 2973#endif
… …
2347 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
2348 { 2976 {
2349 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
2350 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
2351 2979
2352#if EV_USE_EVENTFD
2353 if (evfd >= 0)
2354 close (evfd);
2355#endif
2356
2357 if (evpipe [0] >= 0)
2358 {
2359 EV_WIN32_CLOSE_FD (evpipe [0]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2360 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2361 }
2362 } 2982 }
2363 2983
2364#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
2365 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
2366 close (sigfd); 2986 close (sigfd);
… …
2452#endif 3072#endif
2453#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
2454 infy_fork (EV_A); 3074 infy_fork (EV_A);
2455#endif 3075#endif
2456 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2457 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
2458 { 3079 {
2459 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2460 3081
2461 ev_ref (EV_A); 3082 ev_ref (EV_A);
2462 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
2463 3084
2464#if EV_USE_EVENTFD
2465 if (evfd >= 0)
2466 close (evfd);
2467#endif
2468
2469 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
2470 {
2471 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
2472 EV_WIN32_CLOSE_FD (evpipe [1]);
2473 }
2474 3087
2475#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2476 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
2477 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
2478 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2479#endif
2480 } 3091 }
3092#endif
2481 3093
2482 postfork = 0; 3094 postfork = 0;
2483} 3095}
2484 3096
2485#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
2486 3098
3099ecb_cold
2487struct ev_loop * ecb_cold 3100struct ev_loop *
2488ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_THROW
2489{ 3102{
2490 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2491 3104
2492 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
2493 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
… …
2500} 3113}
2501 3114
2502#endif /* multiplicity */ 3115#endif /* multiplicity */
2503 3116
2504#if EV_VERIFY 3117#if EV_VERIFY
2505static void noinline ecb_cold 3118noinline ecb_cold
3119static void
2506verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
2507{ 3121{
2508 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2509 3123
2510 if (w->pending) 3124 if (w->pending)
2511 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2512} 3126}
2513 3127
2514static void noinline ecb_cold 3128noinline ecb_cold
3129static void
2515verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
2516{ 3131{
2517 int i; 3132 int i;
2518 3133
2519 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2524 3139
2525 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2526 } 3141 }
2527} 3142}
2528 3143
2529static void noinline ecb_cold 3144noinline ecb_cold
3145static void
2530array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
2531{ 3147{
2532 while (cnt--) 3148 while (cnt--)
2533 { 3149 {
2534 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2537} 3153}
2538#endif 3154#endif
2539 3155
2540#if EV_FEATURE_API 3156#if EV_FEATURE_API
2541void ecb_cold 3157void ecb_cold
2542ev_verify (EV_P) 3158ev_verify (EV_P) EV_THROW
2543{ 3159{
2544#if EV_VERIFY 3160#if EV_VERIFY
2545 int i; 3161 int i;
2546 WL w; 3162 WL w, w2;
2547 3163
2548 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
2549 3165
2550 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
2551 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
2552 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2553 3169
2554 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
2555 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
2556 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
2557 { 3176 {
2558 verify_watcher (EV_A_ (W)w); 3177 verify_watcher (EV_A_ (W)w);
3178
3179 if (j++ & 1)
3180 {
3181 assert (("libev: io watcher list contains a loop", w != w2));
3182 w2 = w2->next;
3183 }
3184
2559 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3185 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2560 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3186 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2561 } 3187 }
3188 }
2562 3189
2563 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
2564 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
2565 3192
2566#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
2612#endif 3239#endif
2613} 3240}
2614#endif 3241#endif
2615 3242
2616#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
2617struct ev_loop * ecb_cold 3245struct ev_loop *
2618#else 3246#else
2619int 3247int
2620#endif 3248#endif
2621ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_THROW
2622{ 3250{
2623 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
2624 { 3252 {
2625#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
2626 EV_P = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2645 3273
2646 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
2647} 3275}
2648 3276
2649void 3277void
2650ev_loop_fork (EV_P) 3278ev_loop_fork (EV_P) EV_THROW
2651{ 3279{
2652 postfork = 1; /* must be in line with ev_default_fork */ 3280 postfork = 1;
2653} 3281}
2654 3282
2655/*****************************************************************************/ 3283/*****************************************************************************/
2656 3284
2657void 3285void
… …
2659{ 3287{
2660 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
2661} 3289}
2662 3290
2663unsigned int 3291unsigned int
2664ev_pending_count (EV_P) 3292ev_pending_count (EV_P) EV_THROW
2665{ 3293{
2666 int pri; 3294 int pri;
2667 unsigned int count = 0; 3295 unsigned int count = 0;
2668 3296
2669 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
2670 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2671 3299
2672 return count; 3300 return count;
2673} 3301}
2674 3302
2675void noinline 3303noinline
3304void
2676ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2677{ 3306{
2678 int pri; 3307 pendingpri = NUMPRI;
2679 3308
2680 for (pri = NUMPRI; pri--; ) 3309 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3310 {
3311 --pendingpri;
3312
2681 while (pendingcnt [pri]) 3313 while (pendingcnt [pendingpri])
2682 { 3314 {
2683 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3315 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2684 3316
2685 p->w->pending = 0; 3317 p->w->pending = 0;
2686 EV_CB_INVOKE (p->w, p->events); 3318 EV_CB_INVOKE (p->w, p->events);
2687 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
2688 } 3320 }
3321 }
2689} 3322}
2690 3323
2691#if EV_IDLE_ENABLE 3324#if EV_IDLE_ENABLE
2692/* make idle watchers pending. this handles the "call-idle */ 3325/* make idle watchers pending. this handles the "call-idle */
2693/* only when higher priorities are idle" logic */ 3326/* only when higher priorities are idle" logic */
… …
2751 } 3384 }
2752} 3385}
2753 3386
2754#if EV_PERIODIC_ENABLE 3387#if EV_PERIODIC_ENABLE
2755 3388
2756static void noinline 3389noinline
3390static void
2757periodic_recalc (EV_P_ ev_periodic *w) 3391periodic_recalc (EV_P_ ev_periodic *w)
2758{ 3392{
2759 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3393 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2760 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3394 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2761 3395
… …
2783{ 3417{
2784 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
2785 3419
2786 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3420 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2787 { 3421 {
2788 int feed_count = 0;
2789
2790 do 3422 do
2791 { 3423 {
2792 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3424 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2793 3425
2794 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3426 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2821 } 3453 }
2822} 3454}
2823 3455
2824/* simply recalculate all periodics */ 3456/* simply recalculate all periodics */
2825/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3457/* TODO: maybe ensure that at least one event happens when jumping forward? */
2826static void noinline ecb_cold 3458noinline ecb_cold
3459static void
2827periodics_reschedule (EV_P) 3460periodics_reschedule (EV_P)
2828{ 3461{
2829 int i; 3462 int i;
2830 3463
2831 /* adjust periodics after time jump */ 3464 /* adjust periodics after time jump */
… …
2844 reheap (periodics, periodiccnt); 3477 reheap (periodics, periodiccnt);
2845} 3478}
2846#endif 3479#endif
2847 3480
2848/* adjust all timers by a given offset */ 3481/* adjust all timers by a given offset */
2849static void noinline ecb_cold 3482noinline ecb_cold
3483static void
2850timers_reschedule (EV_P_ ev_tstamp adjust) 3484timers_reschedule (EV_P_ ev_tstamp adjust)
2851{ 3485{
2852 int i; 3486 int i;
2853 3487
2854 for (i = 0; i < timercnt; ++i) 3488 for (i = 0; i < timercnt; ++i)
… …
2928 3562
2929 mn_now = ev_rt_now; 3563 mn_now = ev_rt_now;
2930 } 3564 }
2931} 3565}
2932 3566
2933void 3567int
2934ev_run (EV_P_ int flags) 3568ev_run (EV_P_ int flags)
2935{ 3569{
2936#if EV_FEATURE_API 3570#if EV_FEATURE_API
2937 ++loop_depth; 3571 ++loop_depth;
2938#endif 3572#endif
… …
3053 backend_poll (EV_A_ waittime); 3687 backend_poll (EV_A_ waittime);
3054 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3055 3689
3056 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3690 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3057 3691
3692 ECB_MEMORY_FENCE_ACQUIRE;
3058 if (pipe_write_skipped) 3693 if (pipe_write_skipped)
3059 { 3694 {
3060 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3695 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3061 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3696 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3062 } 3697 }
… …
3095 loop_done = EVBREAK_CANCEL; 3730 loop_done = EVBREAK_CANCEL;
3096 3731
3097#if EV_FEATURE_API 3732#if EV_FEATURE_API
3098 --loop_depth; 3733 --loop_depth;
3099#endif 3734#endif
3100}
3101 3735
3736 return activecnt;
3737}
3738
3102void 3739void
3103ev_break (EV_P_ int how) 3740ev_break (EV_P_ int how) EV_THROW
3104{ 3741{
3105 loop_done = how; 3742 loop_done = how;
3106} 3743}
3107 3744
3108void 3745void
3109ev_ref (EV_P) 3746ev_ref (EV_P) EV_THROW
3110{ 3747{
3111 ++activecnt; 3748 ++activecnt;
3112} 3749}
3113 3750
3114void 3751void
3115ev_unref (EV_P) 3752ev_unref (EV_P) EV_THROW
3116{ 3753{
3117 --activecnt; 3754 --activecnt;
3118} 3755}
3119 3756
3120void 3757void
3121ev_now_update (EV_P) 3758ev_now_update (EV_P) EV_THROW
3122{ 3759{
3123 time_update (EV_A_ 1e100); 3760 time_update (EV_A_ 1e100);
3124} 3761}
3125 3762
3126void 3763void
3127ev_suspend (EV_P) 3764ev_suspend (EV_P) EV_THROW
3128{ 3765{
3129 ev_now_update (EV_A); 3766 ev_now_update (EV_A);
3130} 3767}
3131 3768
3132void 3769void
3133ev_resume (EV_P) 3770ev_resume (EV_P) EV_THROW
3134{ 3771{
3135 ev_tstamp mn_prev = mn_now; 3772 ev_tstamp mn_prev = mn_now;
3136 3773
3137 ev_now_update (EV_A); 3774 ev_now_update (EV_A);
3138 timers_reschedule (EV_A_ mn_now - mn_prev); 3775 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3177 w->pending = 0; 3814 w->pending = 0;
3178 } 3815 }
3179} 3816}
3180 3817
3181int 3818int
3182ev_clear_pending (EV_P_ void *w) 3819ev_clear_pending (EV_P_ void *w) EV_THROW
3183{ 3820{
3184 W w_ = (W)w; 3821 W w_ = (W)w;
3185 int pending = w_->pending; 3822 int pending = w_->pending;
3186 3823
3187 if (expect_true (pending)) 3824 if (expect_true (pending))
… …
3219 w->active = 0; 3856 w->active = 0;
3220} 3857}
3221 3858
3222/*****************************************************************************/ 3859/*****************************************************************************/
3223 3860
3224void noinline 3861noinline
3862void
3225ev_io_start (EV_P_ ev_io *w) 3863ev_io_start (EV_P_ ev_io *w) EV_THROW
3226{ 3864{
3227 int fd = w->fd; 3865 int fd = w->fd;
3228 3866
3229 if (expect_false (ev_is_active (w))) 3867 if (expect_false (ev_is_active (w)))
3230 return; 3868 return;
… …
3236 3874
3237 ev_start (EV_A_ (W)w, 1); 3875 ev_start (EV_A_ (W)w, 1);
3238 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3876 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3239 wlist_add (&anfds[fd].head, (WL)w); 3877 wlist_add (&anfds[fd].head, (WL)w);
3240 3878
3879 /* common bug, apparently */
3880 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3881
3241 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3882 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3242 w->events &= ~EV__IOFDSET; 3883 w->events &= ~EV__IOFDSET;
3243 3884
3244 EV_FREQUENT_CHECK; 3885 EV_FREQUENT_CHECK;
3245} 3886}
3246 3887
3247void noinline 3888noinline
3889void
3248ev_io_stop (EV_P_ ev_io *w) 3890ev_io_stop (EV_P_ ev_io *w) EV_THROW
3249{ 3891{
3250 clear_pending (EV_A_ (W)w); 3892 clear_pending (EV_A_ (W)w);
3251 if (expect_false (!ev_is_active (w))) 3893 if (expect_false (!ev_is_active (w)))
3252 return; 3894 return;
3253 3895
… …
3261 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3903 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3262 3904
3263 EV_FREQUENT_CHECK; 3905 EV_FREQUENT_CHECK;
3264} 3906}
3265 3907
3266void noinline 3908noinline
3909void
3267ev_timer_start (EV_P_ ev_timer *w) 3910ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3268{ 3911{
3269 if (expect_false (ev_is_active (w))) 3912 if (expect_false (ev_is_active (w)))
3270 return; 3913 return;
3271 3914
3272 ev_at (w) += mn_now; 3915 ev_at (w) += mn_now;
… …
3285 EV_FREQUENT_CHECK; 3928 EV_FREQUENT_CHECK;
3286 3929
3287 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3930 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3288} 3931}
3289 3932
3290void noinline 3933noinline
3934void
3291ev_timer_stop (EV_P_ ev_timer *w) 3935ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3292{ 3936{
3293 clear_pending (EV_A_ (W)w); 3937 clear_pending (EV_A_ (W)w);
3294 if (expect_false (!ev_is_active (w))) 3938 if (expect_false (!ev_is_active (w)))
3295 return; 3939 return;
3296 3940
… …
3315 ev_stop (EV_A_ (W)w); 3959 ev_stop (EV_A_ (W)w);
3316 3960
3317 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
3318} 3962}
3319 3963
3320void noinline 3964noinline
3965void
3321ev_timer_again (EV_P_ ev_timer *w) 3966ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3322{ 3967{
3323 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
3324 3969
3325 clear_pending (EV_A_ (W)w); 3970 clear_pending (EV_A_ (W)w);
3326 3971
… …
3343 3988
3344 EV_FREQUENT_CHECK; 3989 EV_FREQUENT_CHECK;
3345} 3990}
3346 3991
3347ev_tstamp 3992ev_tstamp
3348ev_timer_remaining (EV_P_ ev_timer *w) 3993ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3349{ 3994{
3350 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3995 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3351} 3996}
3352 3997
3353#if EV_PERIODIC_ENABLE 3998#if EV_PERIODIC_ENABLE
3354void noinline 3999noinline
4000void
3355ev_periodic_start (EV_P_ ev_periodic *w) 4001ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3356{ 4002{
3357 if (expect_false (ev_is_active (w))) 4003 if (expect_false (ev_is_active (w)))
3358 return; 4004 return;
3359 4005
3360 if (w->reschedule_cb) 4006 if (w->reschedule_cb)
… …
3379 EV_FREQUENT_CHECK; 4025 EV_FREQUENT_CHECK;
3380 4026
3381 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4027 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3382} 4028}
3383 4029
3384void noinline 4030noinline
4031void
3385ev_periodic_stop (EV_P_ ev_periodic *w) 4032ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3386{ 4033{
3387 clear_pending (EV_A_ (W)w); 4034 clear_pending (EV_A_ (W)w);
3388 if (expect_false (!ev_is_active (w))) 4035 if (expect_false (!ev_is_active (w)))
3389 return; 4036 return;
3390 4037
… …
3407 ev_stop (EV_A_ (W)w); 4054 ev_stop (EV_A_ (W)w);
3408 4055
3409 EV_FREQUENT_CHECK; 4056 EV_FREQUENT_CHECK;
3410} 4057}
3411 4058
3412void noinline 4059noinline
4060void
3413ev_periodic_again (EV_P_ ev_periodic *w) 4061ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3414{ 4062{
3415 /* TODO: use adjustheap and recalculation */ 4063 /* TODO: use adjustheap and recalculation */
3416 ev_periodic_stop (EV_A_ w); 4064 ev_periodic_stop (EV_A_ w);
3417 ev_periodic_start (EV_A_ w); 4065 ev_periodic_start (EV_A_ w);
3418} 4066}
… …
3422# define SA_RESTART 0 4070# define SA_RESTART 0
3423#endif 4071#endif
3424 4072
3425#if EV_SIGNAL_ENABLE 4073#if EV_SIGNAL_ENABLE
3426 4074
3427void noinline 4075noinline
4076void
3428ev_signal_start (EV_P_ ev_signal *w) 4077ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3429{ 4078{
3430 if (expect_false (ev_is_active (w))) 4079 if (expect_false (ev_is_active (w)))
3431 return; 4080 return;
3432 4081
3433 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4082 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3435#if EV_MULTIPLICITY 4084#if EV_MULTIPLICITY
3436 assert (("libev: a signal must not be attached to two different loops", 4085 assert (("libev: a signal must not be attached to two different loops",
3437 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4086 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3438 4087
3439 signals [w->signum - 1].loop = EV_A; 4088 signals [w->signum - 1].loop = EV_A;
4089 ECB_MEMORY_FENCE_RELEASE;
3440#endif 4090#endif
3441 4091
3442 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
3443 4093
3444#if EV_USE_SIGNALFD 4094#if EV_USE_SIGNALFD
… …
3503 } 4153 }
3504 4154
3505 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
3506} 4156}
3507 4157
3508void noinline 4158noinline
4159void
3509ev_signal_stop (EV_P_ ev_signal *w) 4160ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3510{ 4161{
3511 clear_pending (EV_A_ (W)w); 4162 clear_pending (EV_A_ (W)w);
3512 if (expect_false (!ev_is_active (w))) 4163 if (expect_false (!ev_is_active (w)))
3513 return; 4164 return;
3514 4165
… …
3545#endif 4196#endif
3546 4197
3547#if EV_CHILD_ENABLE 4198#if EV_CHILD_ENABLE
3548 4199
3549void 4200void
3550ev_child_start (EV_P_ ev_child *w) 4201ev_child_start (EV_P_ ev_child *w) EV_THROW
3551{ 4202{
3552#if EV_MULTIPLICITY 4203#if EV_MULTIPLICITY
3553 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4204 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3554#endif 4205#endif
3555 if (expect_false (ev_is_active (w))) 4206 if (expect_false (ev_is_active (w)))
… …
3562 4213
3563 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
3564} 4215}
3565 4216
3566void 4217void
3567ev_child_stop (EV_P_ ev_child *w) 4218ev_child_stop (EV_P_ ev_child *w) EV_THROW
3568{ 4219{
3569 clear_pending (EV_A_ (W)w); 4220 clear_pending (EV_A_ (W)w);
3570 if (expect_false (!ev_is_active (w))) 4221 if (expect_false (!ev_is_active (w)))
3571 return; 4222 return;
3572 4223
… …
3589 4240
3590#define DEF_STAT_INTERVAL 5.0074891 4241#define DEF_STAT_INTERVAL 5.0074891
3591#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4242#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3592#define MIN_STAT_INTERVAL 0.1074891 4243#define MIN_STAT_INTERVAL 0.1074891
3593 4244
3594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4245noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3595 4246
3596#if EV_USE_INOTIFY 4247#if EV_USE_INOTIFY
3597 4248
3598/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4249/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3599# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4250# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3600 4251
3601static void noinline 4252noinline
4253static void
3602infy_add (EV_P_ ev_stat *w) 4254infy_add (EV_P_ ev_stat *w)
3603{ 4255{
3604 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); 4256 w->wd = inotify_add_watch (fs_fd, w->path,
4257 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4258 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4259 | IN_DONT_FOLLOW | IN_MASK_ADD);
3605 4260
3606 if (w->wd >= 0) 4261 if (w->wd >= 0)
3607 { 4262 {
3608 struct statfs sfs; 4263 struct statfs sfs;
3609 4264
… …
3613 4268
3614 if (!fs_2625) 4269 if (!fs_2625)
3615 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4270 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3616 else if (!statfs (w->path, &sfs) 4271 else if (!statfs (w->path, &sfs)
3617 && (sfs.f_type == 0x1373 /* devfs */ 4272 && (sfs.f_type == 0x1373 /* devfs */
4273 || sfs.f_type == 0x4006 /* fat */
4274 || sfs.f_type == 0x4d44 /* msdos */
3618 || sfs.f_type == 0xEF53 /* ext2/3 */ 4275 || sfs.f_type == 0xEF53 /* ext2/3 */
4276 || sfs.f_type == 0x72b6 /* jffs2 */
4277 || sfs.f_type == 0x858458f6 /* ramfs */
4278 || sfs.f_type == 0x5346544e /* ntfs */
3619 || sfs.f_type == 0x3153464a /* jfs */ 4279 || sfs.f_type == 0x3153464a /* jfs */
4280 || sfs.f_type == 0x9123683e /* btrfs */
3620 || sfs.f_type == 0x52654973 /* reiser3 */ 4281 || sfs.f_type == 0x52654973 /* reiser3 */
3621 || sfs.f_type == 0x01021994 /* tempfs */ 4282 || sfs.f_type == 0x01021994 /* tmpfs */
3622 || sfs.f_type == 0x58465342 /* xfs */)) 4283 || sfs.f_type == 0x58465342 /* xfs */))
3623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4284 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3624 else 4285 else
3625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4286 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3626 } 4287 }
… …
3661 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4322 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3662 ev_timer_again (EV_A_ &w->timer); 4323 ev_timer_again (EV_A_ &w->timer);
3663 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3664} 4325}
3665 4326
3666static void noinline 4327noinline
4328static void
3667infy_del (EV_P_ ev_stat *w) 4329infy_del (EV_P_ ev_stat *w)
3668{ 4330{
3669 int slot; 4331 int slot;
3670 int wd = w->wd; 4332 int wd = w->wd;
3671 4333
… …
3678 4340
3679 /* remove this watcher, if others are watching it, they will rearm */ 4341 /* remove this watcher, if others are watching it, they will rearm */
3680 inotify_rm_watch (fs_fd, wd); 4342 inotify_rm_watch (fs_fd, wd);
3681} 4343}
3682 4344
3683static void noinline 4345noinline
4346static void
3684infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4347infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3685{ 4348{
3686 if (slot < 0) 4349 if (slot < 0)
3687 /* overflow, need to check for all hash slots */ 4350 /* overflow, need to check for all hash slots */
3688 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4351 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3724 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4387 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3725 ofs += sizeof (struct inotify_event) + ev->len; 4388 ofs += sizeof (struct inotify_event) + ev->len;
3726 } 4389 }
3727} 4390}
3728 4391
3729inline_size void ecb_cold 4392inline_size ecb_cold
4393void
3730ev_check_2625 (EV_P) 4394ev_check_2625 (EV_P)
3731{ 4395{
3732 /* kernels < 2.6.25 are borked 4396 /* kernels < 2.6.25 are borked
3733 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4397 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3734 */ 4398 */
… …
3739} 4403}
3740 4404
3741inline_size int 4405inline_size int
3742infy_newfd (void) 4406infy_newfd (void)
3743{ 4407{
3744#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4408#if defined IN_CLOEXEC && defined IN_NONBLOCK
3745 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4409 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3746 if (fd >= 0) 4410 if (fd >= 0)
3747 return fd; 4411 return fd;
3748#endif 4412#endif
3749 return inotify_init (); 4413 return inotify_init ();
… …
3824#else 4488#else
3825# define EV_LSTAT(p,b) lstat (p, b) 4489# define EV_LSTAT(p,b) lstat (p, b)
3826#endif 4490#endif
3827 4491
3828void 4492void
3829ev_stat_stat (EV_P_ ev_stat *w) 4493ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3830{ 4494{
3831 if (lstat (w->path, &w->attr) < 0) 4495 if (lstat (w->path, &w->attr) < 0)
3832 w->attr.st_nlink = 0; 4496 w->attr.st_nlink = 0;
3833 else if (!w->attr.st_nlink) 4497 else if (!w->attr.st_nlink)
3834 w->attr.st_nlink = 1; 4498 w->attr.st_nlink = 1;
3835} 4499}
3836 4500
3837static void noinline 4501noinline
4502static void
3838stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4503stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3839{ 4504{
3840 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4505 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3841 4506
3842 ev_statdata prev = w->attr; 4507 ev_statdata prev = w->attr;
… …
3873 ev_feed_event (EV_A_ w, EV_STAT); 4538 ev_feed_event (EV_A_ w, EV_STAT);
3874 } 4539 }
3875} 4540}
3876 4541
3877void 4542void
3878ev_stat_start (EV_P_ ev_stat *w) 4543ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3879{ 4544{
3880 if (expect_false (ev_is_active (w))) 4545 if (expect_false (ev_is_active (w)))
3881 return; 4546 return;
3882 4547
3883 ev_stat_stat (EV_A_ w); 4548 ev_stat_stat (EV_A_ w);
… …
3904 4569
3905 EV_FREQUENT_CHECK; 4570 EV_FREQUENT_CHECK;
3906} 4571}
3907 4572
3908void 4573void
3909ev_stat_stop (EV_P_ ev_stat *w) 4574ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3910{ 4575{
3911 clear_pending (EV_A_ (W)w); 4576 clear_pending (EV_A_ (W)w);
3912 if (expect_false (!ev_is_active (w))) 4577 if (expect_false (!ev_is_active (w)))
3913 return; 4578 return;
3914 4579
… …
3930} 4595}
3931#endif 4596#endif
3932 4597
3933#if EV_IDLE_ENABLE 4598#if EV_IDLE_ENABLE
3934void 4599void
3935ev_idle_start (EV_P_ ev_idle *w) 4600ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3936{ 4601{
3937 if (expect_false (ev_is_active (w))) 4602 if (expect_false (ev_is_active (w)))
3938 return; 4603 return;
3939 4604
3940 pri_adjust (EV_A_ (W)w); 4605 pri_adjust (EV_A_ (W)w);
… …
3953 4618
3954 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
3955} 4620}
3956 4621
3957void 4622void
3958ev_idle_stop (EV_P_ ev_idle *w) 4623ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3959{ 4624{
3960 clear_pending (EV_A_ (W)w); 4625 clear_pending (EV_A_ (W)w);
3961 if (expect_false (!ev_is_active (w))) 4626 if (expect_false (!ev_is_active (w)))
3962 return; 4627 return;
3963 4628
… …
3977} 4642}
3978#endif 4643#endif
3979 4644
3980#if EV_PREPARE_ENABLE 4645#if EV_PREPARE_ENABLE
3981void 4646void
3982ev_prepare_start (EV_P_ ev_prepare *w) 4647ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3983{ 4648{
3984 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
3985 return; 4650 return;
3986 4651
3987 EV_FREQUENT_CHECK; 4652 EV_FREQUENT_CHECK;
… …
3992 4657
3993 EV_FREQUENT_CHECK; 4658 EV_FREQUENT_CHECK;
3994} 4659}
3995 4660
3996void 4661void
3997ev_prepare_stop (EV_P_ ev_prepare *w) 4662ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3998{ 4663{
3999 clear_pending (EV_A_ (W)w); 4664 clear_pending (EV_A_ (W)w);
4000 if (expect_false (!ev_is_active (w))) 4665 if (expect_false (!ev_is_active (w)))
4001 return; 4666 return;
4002 4667
… …
4015} 4680}
4016#endif 4681#endif
4017 4682
4018#if EV_CHECK_ENABLE 4683#if EV_CHECK_ENABLE
4019void 4684void
4020ev_check_start (EV_P_ ev_check *w) 4685ev_check_start (EV_P_ ev_check *w) EV_THROW
4021{ 4686{
4022 if (expect_false (ev_is_active (w))) 4687 if (expect_false (ev_is_active (w)))
4023 return; 4688 return;
4024 4689
4025 EV_FREQUENT_CHECK; 4690 EV_FREQUENT_CHECK;
… …
4030 4695
4031 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
4032} 4697}
4033 4698
4034void 4699void
4035ev_check_stop (EV_P_ ev_check *w) 4700ev_check_stop (EV_P_ ev_check *w) EV_THROW
4036{ 4701{
4037 clear_pending (EV_A_ (W)w); 4702 clear_pending (EV_A_ (W)w);
4038 if (expect_false (!ev_is_active (w))) 4703 if (expect_false (!ev_is_active (w)))
4039 return; 4704 return;
4040 4705
… …
4052 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
4053} 4718}
4054#endif 4719#endif
4055 4720
4056#if EV_EMBED_ENABLE 4721#if EV_EMBED_ENABLE
4057void noinline 4722noinline
4723void
4058ev_embed_sweep (EV_P_ ev_embed *w) 4724ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4059{ 4725{
4060 ev_run (w->other, EVRUN_NOWAIT); 4726 ev_run (w->other, EVRUN_NOWAIT);
4061} 4727}
4062 4728
4063static void 4729static void
… …
4111 ev_idle_stop (EV_A_ idle); 4777 ev_idle_stop (EV_A_ idle);
4112} 4778}
4113#endif 4779#endif
4114 4780
4115void 4781void
4116ev_embed_start (EV_P_ ev_embed *w) 4782ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4117{ 4783{
4118 if (expect_false (ev_is_active (w))) 4784 if (expect_false (ev_is_active (w)))
4119 return; 4785 return;
4120 4786
4121 { 4787 {
… …
4142 4808
4143 EV_FREQUENT_CHECK; 4809 EV_FREQUENT_CHECK;
4144} 4810}
4145 4811
4146void 4812void
4147ev_embed_stop (EV_P_ ev_embed *w) 4813ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4148{ 4814{
4149 clear_pending (EV_A_ (W)w); 4815 clear_pending (EV_A_ (W)w);
4150 if (expect_false (!ev_is_active (w))) 4816 if (expect_false (!ev_is_active (w)))
4151 return; 4817 return;
4152 4818
… …
4162} 4828}
4163#endif 4829#endif
4164 4830
4165#if EV_FORK_ENABLE 4831#if EV_FORK_ENABLE
4166void 4832void
4167ev_fork_start (EV_P_ ev_fork *w) 4833ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4168{ 4834{
4169 if (expect_false (ev_is_active (w))) 4835 if (expect_false (ev_is_active (w)))
4170 return; 4836 return;
4171 4837
4172 EV_FREQUENT_CHECK; 4838 EV_FREQUENT_CHECK;
… …
4177 4843
4178 EV_FREQUENT_CHECK; 4844 EV_FREQUENT_CHECK;
4179} 4845}
4180 4846
4181void 4847void
4182ev_fork_stop (EV_P_ ev_fork *w) 4848ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4183{ 4849{
4184 clear_pending (EV_A_ (W)w); 4850 clear_pending (EV_A_ (W)w);
4185 if (expect_false (!ev_is_active (w))) 4851 if (expect_false (!ev_is_active (w)))
4186 return; 4852 return;
4187 4853
… …
4200} 4866}
4201#endif 4867#endif
4202 4868
4203#if EV_CLEANUP_ENABLE 4869#if EV_CLEANUP_ENABLE
4204void 4870void
4205ev_cleanup_start (EV_P_ ev_cleanup *w) 4871ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4206{ 4872{
4207 if (expect_false (ev_is_active (w))) 4873 if (expect_false (ev_is_active (w)))
4208 return; 4874 return;
4209 4875
4210 EV_FREQUENT_CHECK; 4876 EV_FREQUENT_CHECK;
… …
4217 ev_unref (EV_A); 4883 ev_unref (EV_A);
4218 EV_FREQUENT_CHECK; 4884 EV_FREQUENT_CHECK;
4219} 4885}
4220 4886
4221void 4887void
4222ev_cleanup_stop (EV_P_ ev_cleanup *w) 4888ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4223{ 4889{
4224 clear_pending (EV_A_ (W)w); 4890 clear_pending (EV_A_ (W)w);
4225 if (expect_false (!ev_is_active (w))) 4891 if (expect_false (!ev_is_active (w)))
4226 return; 4892 return;
4227 4893
… …
4241} 4907}
4242#endif 4908#endif
4243 4909
4244#if EV_ASYNC_ENABLE 4910#if EV_ASYNC_ENABLE
4245void 4911void
4246ev_async_start (EV_P_ ev_async *w) 4912ev_async_start (EV_P_ ev_async *w) EV_THROW
4247{ 4913{
4248 if (expect_false (ev_is_active (w))) 4914 if (expect_false (ev_is_active (w)))
4249 return; 4915 return;
4250 4916
4251 w->sent = 0; 4917 w->sent = 0;
… …
4260 4926
4261 EV_FREQUENT_CHECK; 4927 EV_FREQUENT_CHECK;
4262} 4928}
4263 4929
4264void 4930void
4265ev_async_stop (EV_P_ ev_async *w) 4931ev_async_stop (EV_P_ ev_async *w) EV_THROW
4266{ 4932{
4267 clear_pending (EV_A_ (W)w); 4933 clear_pending (EV_A_ (W)w);
4268 if (expect_false (!ev_is_active (w))) 4934 if (expect_false (!ev_is_active (w)))
4269 return; 4935 return;
4270 4936
… …
4281 4947
4282 EV_FREQUENT_CHECK; 4948 EV_FREQUENT_CHECK;
4283} 4949}
4284 4950
4285void 4951void
4286ev_async_send (EV_P_ ev_async *w) 4952ev_async_send (EV_P_ ev_async *w) EV_THROW
4287{ 4953{
4288 w->sent = 1; 4954 w->sent = 1;
4289 evpipe_write (EV_A_ &async_pending); 4955 evpipe_write (EV_A_ &async_pending);
4290} 4956}
4291#endif 4957#endif
… …
4328 4994
4329 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4995 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4330} 4996}
4331 4997
4332void 4998void
4333ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4999ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4334{ 5000{
4335 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5001 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4336 5002
4337 if (expect_false (!once)) 5003 if (expect_false (!once))
4338 { 5004 {
… …
4359} 5025}
4360 5026
4361/*****************************************************************************/ 5027/*****************************************************************************/
4362 5028
4363#if EV_WALK_ENABLE 5029#if EV_WALK_ENABLE
4364void ecb_cold 5030ecb_cold
5031void
4365ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5032ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4366{ 5033{
4367 int i, j; 5034 int i, j;
4368 ev_watcher_list *wl, *wn; 5035 ev_watcher_list *wl, *wn;
4369 5036
4370 if (types & (EV_IO | EV_EMBED)) 5037 if (types & (EV_IO | EV_EMBED))

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