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Comparing libev/ev.c (file contents):
Revision 1.410 by root, Sat Feb 4 17:57:55 2012 UTC vs.
Revision 1.482 by root, Sat Jul 28 04:15:15 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
… …
201# include <sys/wait.h> 201# include <sys/wait.h>
202# include <unistd.h> 202# include <unistd.h>
203#else 203#else
204# include <io.h> 204# include <io.h>
205# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
206# include <windows.h> 207# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
209# endif 210# endif
210# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
219#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
220 221
221/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
222 223
223/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
224#if defined (EV_NSIG) 225#if defined EV_NSIG
225/* use what's provided */ 226/* use what's provided */
226#elif defined (NSIG) 227#elif defined NSIG
227# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
228#elif defined(_NSIG) 229#elif defined _NSIG
229# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX) 231#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX) 233#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG) 237#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG) 239#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
240#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined (_sys_nsig) 243#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 245#else
245# error "unable to find value for NSIG, please report" 246# 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 247#endif
250 248
251#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
253#endif 251#endif
254 252
255#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 256# else
259# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
260# endif 258# endif
261#endif 259#endif
262 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
263#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
265# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else 273# else
267# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
268# endif 275# endif
269#endif 276#endif
… …
356 363
357#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 366#endif
360 367
368#ifdef __ANDROID__
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* 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. */ 385/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 387# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
369# else 392# else
… …
372# endif 395# endif
373#endif 396#endif
374 397
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 399
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 400#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
386#endif 403#endif
387 404
… …
395# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
396#endif 413#endif
397 414
398#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
399/* hp-ux has it in sys/time.h, which we unconditionally include above */ 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux) 417# if !defined _WIN32 && !defined __hpux
401# include <sys/select.h> 418# include <sys/select.h>
402# endif 419# endif
403#endif 420#endif
404 421
405#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
… …
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
412# endif 429# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 430#endif
418 431
419#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 434# include <stdint.h>
… …
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
480/* 493/*
481 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
482 * 495 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 498 * All rights reserved.
486 * 499 *
487 * Redistribution and use in source and binary forms, with or without modifica- 500 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 517 * 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 518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
507 */ 531 */
508 532
509#ifndef ECB_H 533#ifndef ECB_H
510#define ECB_H 534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
511 538
512#ifdef _WIN32 539#ifdef _WIN32
513 typedef signed char int8_t; 540 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 542 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 548 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 549 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 550 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 551 typedef unsigned __int64 uint64_t;
525 #endif 552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
526#else 562#else
527 #include <inttypes.h> 563 #include <inttypes.h>
564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
528#endif 581#endif
529 582
530/* many compilers define _GNUC_ to some versions but then only implement 583/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 584 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 585 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 586 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 587 * 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. 588 * an issue with that they should have done it right in the first place.
536 */ 589 */
537#ifndef ECB_GCC_VERSION
538 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 591 #define ECB_GCC_VERSION(major,minor) 0
540 #else 592#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
543#endif 632#endif
544 633
545/*****************************************************************************/ 634/*****************************************************************************/
546 635
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 636/* 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 */ 637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 638
550#if ECB_NO_THREADS 639#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 640 #define ECB_NO_SMP 1
552#endif 641#endif
553 642
554#if ECB_NO_THREADS || ECB_NO_SMP 643#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 644 #define ECB_MEMORY_FENCE do { } while (0)
556#endif 645#endif
557 646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif
655
558#ifndef ECB_MEMORY_FENCE 656#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__ 658 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 659 #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 */ 660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 662 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 664 #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 */ 665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* 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__ ) \ 675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 678 #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__ ) \ 679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__) 688 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
694 #elif defined __alpha__
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
696 #elif defined __hppa__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
699 #elif defined __ia64__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
582 #endif 707 #endif
583 #endif 708 #endif
584#endif 709#endif
585 710
586#ifndef ECB_MEMORY_FENCE 711#ifndef ECB_MEMORY_FENCE
712 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
717
718 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
723
587 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
588 #define ECB_MEMORY_FENCE __sync_synchronize () 725 #define ECB_MEMORY_FENCE __sync_synchronize ()
589 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
590 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
591 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
592 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
593 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
594 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
595 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
596 #elif defined(_WIN32) 737 #elif defined _WIN32
597 #include <WinNT.h> 738 #include <WinNT.h>
598 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
599 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #include <mbarrier.h> 741 #include <mbarrier.h>
601 #define ECB_MEMORY_FENCE __machine_rw_barrier () 742 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
602 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
603 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 744 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
745 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync ()
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* we assume that these memory fences work on all variables/all memory accesses, */
753 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
604 #endif 764 #endif
605#endif 765#endif
606 766
607#ifndef ECB_MEMORY_FENCE 767#ifndef ECB_MEMORY_FENCE
608 #if !ECB_AVOID_PTHREADS 768 #if !ECB_AVOID_PTHREADS
… …
620 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 780 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
621 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 781 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
622 #endif 782 #endif
623#endif 783#endif
624 784
625#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 785#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
626 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
627#endif 787#endif
628 788
629#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
630 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
631#endif 791#endif
632 792
633/*****************************************************************************/ 793/*****************************************************************************/
634 794
635#define ECB_C99 (__STDC_VERSION__ >= 199901L) 795#if ECB_CPP
636
637#if __cplusplus
638 #define ecb_inline static inline 796 #define ecb_inline static inline
639#elif ECB_GCC_VERSION(2,5) 797#elif ECB_GCC_VERSION(2,5)
640 #define ecb_inline static __inline__ 798 #define ecb_inline static __inline__
641#elif ECB_C99 799#elif ECB_C99
642 #define ecb_inline static inline 800 #define ecb_inline static inline
… …
656 814
657#define ECB_CONCAT_(a, b) a ## b 815#define ECB_CONCAT_(a, b) a ## b
658#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
659#define ECB_STRINGIFY_(a) # a 817#define ECB_STRINGIFY_(a) # a
660#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
661 820
662#define ecb_function_ ecb_inline 821#define ecb_function_ ecb_inline
663 822
664#if ECB_GCC_VERSION(3,1) 823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
665 #define ecb_attribute(attrlist) __attribute__(attrlist) 824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
666 #define ecb_is_constant(expr) __builtin_constant_p (expr) 830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
667 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
841#else
842 #define ecb_expect(expr,value) (expr)
843#endif
844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
668 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
669#else 847#else
670 #define ecb_attribute(attrlist)
671 #define ecb_is_constant(expr) 0
672 #define ecb_expect(expr,value) (expr)
673 #define ecb_prefetch(addr,rw,locality) 848 #define ecb_prefetch(addr,rw,locality)
674#endif 849#endif
675 850
676/* no emulation for ecb_decltype */ 851/* no emulation for ecb_decltype */
677#if ECB_GCC_VERSION(4,5) 852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
678 #define ecb_decltype(x) __decltype(x) 855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
679#elif ECB_GCC_VERSION(3,0) 856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
680 #define ecb_decltype(x) __typeof(x) 857 #define ecb_decltype(x) __typeof__ (x)
681#endif 858#endif
682 859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
683#define ecb_noinline ecb_attribute ((__noinline__)) 877 #define ecb_noinline ecb_attribute ((__noinline__))
684#define ecb_noreturn ecb_attribute ((__noreturn__)) 878#endif
879
685#define ecb_unused ecb_attribute ((__unused__)) 880#define ecb_unused ecb_attribute ((__unused__))
686#define ecb_const ecb_attribute ((__const__)) 881#define ecb_const ecb_attribute ((__const__))
687#define ecb_pure ecb_attribute ((__pure__)) 882#define ecb_pure ecb_attribute ((__pure__))
883
884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
892#else
893 #define ecb_noreturn ecb_attribute ((__noreturn__))
894#endif
688 895
689#if ECB_GCC_VERSION(4,3) 896#if ECB_GCC_VERSION(4,3)
690 #define ecb_artificial ecb_attribute ((__artificial__)) 897 #define ecb_artificial ecb_attribute ((__artificial__))
691 #define ecb_hot ecb_attribute ((__hot__)) 898 #define ecb_hot ecb_attribute ((__hot__))
692 #define ecb_cold ecb_attribute ((__cold__)) 899 #define ecb_cold ecb_attribute ((__cold__))
… …
704/* for compatibility to the rest of the world */ 911/* for compatibility to the rest of the world */
705#define ecb_likely(expr) ecb_expect_true (expr) 912#define ecb_likely(expr) ecb_expect_true (expr)
706#define ecb_unlikely(expr) ecb_expect_false (expr) 913#define ecb_unlikely(expr) ecb_expect_false (expr)
707 914
708/* count trailing zero bits and count # of one bits */ 915/* count trailing zero bits and count # of one bits */
709#if ECB_GCC_VERSION(3,4) 916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
710 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
711 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
712 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
713 #define ecb_ctz32(x) __builtin_ctz (x) 923 #define ecb_ctz32(x) __builtin_ctz (x)
714 #define ecb_ctz64(x) __builtin_ctzll (x) 924 #define ecb_ctz64(x) __builtin_ctzll (x)
715 #define ecb_popcount32(x) __builtin_popcount (x) 925 #define ecb_popcount32(x) __builtin_popcount (x)
716 /* no popcountll */ 926 /* no popcountll */
717#else 927#else
718 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
719 ecb_function_ int 929 ecb_function_ ecb_const int
720 ecb_ctz32 (uint32_t x) 930 ecb_ctz32 (uint32_t x)
721 { 931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
722 int r = 0; 937 int r = 0;
723 938
724 x &= ~x + 1; /* this isolates the lowest bit */ 939 x &= ~x + 1; /* this isolates the lowest bit */
725 940
726#if ECB_branchless_on_i386 941#if ECB_branchless_on_i386
… …
736 if (x & 0xff00ff00) r += 8; 951 if (x & 0xff00ff00) r += 8;
737 if (x & 0xffff0000) r += 16; 952 if (x & 0xffff0000) r += 16;
738#endif 953#endif
739 954
740 return r; 955 return r;
956#endif
741 } 957 }
742 958
743 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
744 ecb_function_ int 960 ecb_function_ ecb_const int
745 ecb_ctz64 (uint64_t x) 961 ecb_ctz64 (uint64_t x)
746 { 962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
747 int shift = x & 0xffffffffU ? 0 : 32; 968 int shift = x & 0xffffffff ? 0 : 32;
748 return ecb_ctz32 (x >> shift) + shift; 969 return ecb_ctz32 (x >> shift) + shift;
970#endif
749 } 971 }
750 972
751 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
752 ecb_function_ int 974 ecb_function_ ecb_const int
753 ecb_popcount32 (uint32_t x) 975 ecb_popcount32 (uint32_t x)
754 { 976 {
755 x -= (x >> 1) & 0x55555555; 977 x -= (x >> 1) & 0x55555555;
756 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
757 x = ((x >> 4) + x) & 0x0f0f0f0f; 979 x = ((x >> 4) + x) & 0x0f0f0f0f;
758 x *= 0x01010101; 980 x *= 0x01010101;
759 981
760 return x >> 24; 982 return x >> 24;
761 } 983 }
762 984
763 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
764 ecb_function_ int ecb_ld32 (uint32_t x) 986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
765 { 987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
766 int r = 0; 993 int r = 0;
767 994
768 if (x >> 16) { x >>= 16; r += 16; } 995 if (x >> 16) { x >>= 16; r += 16; }
769 if (x >> 8) { x >>= 8; r += 8; } 996 if (x >> 8) { x >>= 8; r += 8; }
770 if (x >> 4) { x >>= 4; r += 4; } 997 if (x >> 4) { x >>= 4; r += 4; }
771 if (x >> 2) { x >>= 2; r += 2; } 998 if (x >> 2) { x >>= 2; r += 2; }
772 if (x >> 1) { r += 1; } 999 if (x >> 1) { r += 1; }
773 1000
774 return r; 1001 return r;
1002#endif
775 } 1003 }
776 1004
777 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
778 ecb_function_ int ecb_ld64 (uint64_t x) 1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
779 { 1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
780 int r = 0; 1013 int r = 0;
781 1014
782 if (x >> 32) { x >>= 32; r += 32; } 1015 if (x >> 32) { x >>= 32; r += 32; }
783 1016
784 return r + ecb_ld32 (x); 1017 return r + ecb_ld32 (x);
1018#endif
785 } 1019 }
786#endif 1020#endif
787 1021
1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1026
788ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
789ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
790{ 1029{
791 return ( (x * 0x0802U & 0x22110U) 1030 return ( (x * 0x0802U & 0x22110U)
792 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
793} 1032}
794 1033
795ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
796ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
797{ 1036{
798 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
799 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
800 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
801 x = ( x >> 8 ) | ( x << 8); 1040 x = ( x >> 8 ) | ( x << 8);
802 1041
803 return x; 1042 return x;
804} 1043}
805 1044
806ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
807ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
808{ 1047{
809 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
810 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
811 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
812 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
815 return x; 1054 return x;
816} 1055}
817 1056
818/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
819/* so for this version we are lazy */ 1058/* so for this version we are lazy */
820ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
821ecb_function_ int 1060ecb_function_ ecb_const int
822ecb_popcount64 (uint64_t x) 1061ecb_popcount64 (uint64_t x)
823{ 1062{
824 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
825} 1064}
826 1065
827ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
828ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
829ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
830ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
831ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
832ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
833ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
834ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
835 1074
836ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
837ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
838ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
839ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
840ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
841ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
842ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
843ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
844 1083
845#if ECB_GCC_VERSION(4,3) 1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
846 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
847 #define ecb_bswap32(x) __builtin_bswap32 (x) 1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
848 #define ecb_bswap64(x) __builtin_bswap64 (x) 1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
849#else 1097#else
850 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
851 ecb_function_ uint16_t 1099 ecb_function_ ecb_const uint16_t
852 ecb_bswap16 (uint16_t x) 1100 ecb_bswap16 (uint16_t x)
853 { 1101 {
854 return ecb_rotl16 (x, 8); 1102 return ecb_rotl16 (x, 8);
855 } 1103 }
856 1104
857 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
858 ecb_function_ uint32_t 1106 ecb_function_ ecb_const uint32_t
859 ecb_bswap32 (uint32_t x) 1107 ecb_bswap32 (uint32_t x)
860 { 1108 {
861 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
862 } 1110 }
863 1111
864 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
865 ecb_function_ uint64_t 1113 ecb_function_ ecb_const uint64_t
866 ecb_bswap64 (uint64_t x) 1114 ecb_bswap64 (uint64_t x)
867 { 1115 {
868 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
869 } 1117 }
870#endif 1118#endif
871 1119
872#if ECB_GCC_VERSION(4,5) 1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
873 #define ecb_unreachable() __builtin_unreachable () 1121 #define ecb_unreachable() __builtin_unreachable ()
874#else 1122#else
875 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
876 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
877 ecb_inline void ecb_unreachable (void) { } 1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
878#endif 1126#endif
879 1127
880/* try to tell the compiler that some condition is definitely true */ 1128/* try to tell the compiler that some condition is definitely true */
881#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
882 1130
883ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
884ecb_inline unsigned char 1132ecb_inline ecb_const uint32_t
885ecb_byteorder_helper (void) 1133ecb_byteorder_helper (void)
886{ 1134{
887 const uint32_t u = 0x11223344; 1135 /* the union code still generates code under pressure in gcc, */
888 return *(unsigned char *)&u; 1136 /* but less than using pointers, and always seems to */
1137 /* successfully return a constant. */
1138 /* the reason why we have this horrible preprocessor mess */
1139 /* is to avoid it in all cases, at least on common architectures */
1140 /* or when using a recent enough gcc version (>= 4.6) */
1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
1144 return 0x44332211;
1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
1148 return 0x11223344;
1149#else
1150 union
1151 {
1152 uint8_t c[4];
1153 uint32_t u;
1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1155 return u.u;
1156#endif
889} 1157}
890 1158
891ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
892ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
893ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
894ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
895 1163
896#if ECB_GCC_VERSION(3,0) || ECB_C99 1164#if ECB_GCC_VERSION(3,0) || ECB_C99
897 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
898#else 1166#else
899 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
900#endif 1168#endif
901 1169
902#if __cplusplus 1170#if ECB_CPP
903 template<typename T> 1171 template<typename T>
904 static inline T ecb_div_rd (T val, T div) 1172 static inline T ecb_div_rd (T val, T div)
905 { 1173 {
906 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
907 } 1175 }
… …
924 } 1192 }
925#else 1193#else
926 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
927#endif 1195#endif
928 1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1293/*******************************************************************************/
1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1295
1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1298#if 0 \
1299 || __i386 || __i386__ \
1300 || ECB_GCC_AMD64 \
1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1302 || defined __s390__ || defined __s390x__ \
1303 || defined __mips__ \
1304 || defined __alpha__ \
1305 || defined __hppa__ \
1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1313 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else
1316 #define ECB_STDFP 0
1317#endif
1318
1319#ifndef ECB_NO_LIBM
1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1344 /* convert a float to ieee single/binary32 */
1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1346 ecb_function_ ecb_const uint32_t
1347 ecb_float_to_binary32 (float x)
1348 {
1349 uint32_t r;
1350
1351 #if ECB_STDFP
1352 memcpy (&r, &x, 4);
1353 #else
1354 /* slow emulation, works for anything but -0 */
1355 uint32_t m;
1356 int e;
1357
1358 if (x == 0e0f ) return 0x00000000U;
1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1361 if (x != x ) return 0x7fbfffffU;
1362
1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1364
1365 r = m & 0x80000000U;
1366
1367 if (r)
1368 m = -m;
1369
1370 if (e <= -126)
1371 {
1372 m &= 0xffffffU;
1373 m >>= (-125 - e);
1374 e = -126;
1375 }
1376
1377 r |= (e + 126) << 23;
1378 r |= m & 0x7fffffU;
1379 #endif
1380
1381 return r;
1382 }
1383
1384 /* converts an ieee single/binary32 to a float */
1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1386 ecb_function_ ecb_const float
1387 ecb_binary32_to_float (uint32_t x)
1388 {
1389 float r;
1390
1391 #if ECB_STDFP
1392 memcpy (&r, &x, 4);
1393 #else
1394 /* emulation, only works for normals and subnormals and +0 */
1395 int neg = x >> 31;
1396 int e = (x >> 23) & 0xffU;
1397
1398 x &= 0x7fffffU;
1399
1400 if (e)
1401 x |= 0x800000U;
1402 else
1403 e = 1;
1404
1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1407
1408 r = neg ? -r : r;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* convert a double to ieee double/binary64 */
1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1416 ecb_function_ ecb_const uint64_t
1417 ecb_double_to_binary64 (double x)
1418 {
1419 uint64_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 8);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint64_t m;
1426 int e;
1427
1428 if (x == 0e0 ) return 0x0000000000000000U;
1429 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1430 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1431 if (x != x ) return 0X7ff7ffffffffffffU;
1432
1433 m = frexp (x, &e) * 0x20000000000000U;
1434
1435 r = m & 0x8000000000000000;;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -1022)
1441 {
1442 m &= 0x1fffffffffffffU;
1443 m >>= (-1021 - e);
1444 e = -1022;
1445 }
1446
1447 r |= ((uint64_t)(e + 1022)) << 52;
1448 r |= m & 0xfffffffffffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee double/binary64 to a double */
1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1456 ecb_function_ ecb_const double
1457 ecb_binary64_to_double (uint64_t x)
1458 {
1459 double r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 8);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 63;
1466 int e = (x >> 52) & 0x7ffU;
1467
1468 x &= 0xfffffffffffffU;
1469
1470 if (e)
1471 x |= 0x10000000000000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1476 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1498 }
1499
1500#endif
1501
929#endif 1502#endif
930 1503
931/* ECB.H END */ 1504/* ECB.H END */
932 1505
933#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
954#define inline_size ecb_inline 1527#define inline_size ecb_inline
955 1528
956#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
957# define inline_speed ecb_inline 1530# define inline_speed ecb_inline
958#else 1531#else
959# define inline_speed static noinline 1532# define inline_speed noinline static
960#endif 1533#endif
961 1534
962#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
963 1536
964#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
1011#else 1584#else
1012 1585
1013#include <float.h> 1586#include <float.h>
1014 1587
1015/* a floor() replacement function, should be independent of ev_tstamp type */ 1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1016static ev_tstamp noinline 1590static ev_tstamp
1017ev_floor (ev_tstamp v) 1591ev_floor (ev_tstamp v)
1018{ 1592{
1019 /* the choice of shift factor is not terribly important */ 1593 /* the choice of shift factor is not terribly important */
1020#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1021 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1053 1627
1054#ifdef __linux 1628#ifdef __linux
1055# include <sys/utsname.h> 1629# include <sys/utsname.h>
1056#endif 1630#endif
1057 1631
1058static unsigned int noinline ecb_cold 1632noinline ecb_cold
1633static unsigned int
1059ev_linux_version (void) 1634ev_linux_version (void)
1060{ 1635{
1061#ifdef __linux 1636#ifdef __linux
1062 unsigned int v = 0; 1637 unsigned int v = 0;
1063 struct utsname buf; 1638 struct utsname buf;
… …
1092} 1667}
1093 1668
1094/*****************************************************************************/ 1669/*****************************************************************************/
1095 1670
1096#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
1097static void noinline ecb_cold 1672noinline ecb_cold
1673static void
1098ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
1099{ 1675{
1100 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
1101} 1677}
1102#endif 1678#endif
1103 1679
1104static void (*syserr_cb)(const char *msg); 1680static void (*syserr_cb)(const char *msg) EV_THROW;
1105 1681
1106void ecb_cold 1682ecb_cold
1683void
1107ev_set_syserr_cb (void (*cb)(const char *msg)) 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1108{ 1685{
1109 syserr_cb = cb; 1686 syserr_cb = cb;
1110} 1687}
1111 1688
1112static void noinline ecb_cold 1689noinline ecb_cold
1690static void
1113ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
1114{ 1692{
1115 if (!msg) 1693 if (!msg)
1116 msg = "(libev) system error"; 1694 msg = "(libev) system error";
1117 1695
… …
1130 abort (); 1708 abort ();
1131 } 1709 }
1132} 1710}
1133 1711
1134static void * 1712static void *
1135ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
1136{ 1714{
1137#if __GLIBC__
1138 return realloc (ptr, size);
1139#else
1140 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
1141 * implement realloc (x, 0) (as required by both ansi c-89 and 1716 * implement realloc (x, 0) (as required by both ansi c-89 and
1142 * the single unix specification, so work around them here. 1717 * the single unix specification, so work around them here.
1718 * recently, also (at least) fedora and debian started breaking it,
1719 * despite documenting it otherwise.
1143 */ 1720 */
1144 1721
1145 if (size) 1722 if (size)
1146 return realloc (ptr, size); 1723 return realloc (ptr, size);
1147 1724
1148 free (ptr); 1725 free (ptr);
1149 return 0; 1726 return 0;
1150#endif
1151} 1727}
1152 1728
1153static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1154 1730
1155void ecb_cold 1731ecb_cold
1732void
1156ev_set_allocator (void *(*cb)(void *ptr, long size)) 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1157{ 1734{
1158 alloc = cb; 1735 alloc = cb;
1159} 1736}
1160 1737
1161inline_speed void * 1738inline_speed void *
… …
1278 1855
1279/*****************************************************************************/ 1856/*****************************************************************************/
1280 1857
1281#ifndef EV_HAVE_EV_TIME 1858#ifndef EV_HAVE_EV_TIME
1282ev_tstamp 1859ev_tstamp
1283ev_time (void) 1860ev_time (void) EV_THROW
1284{ 1861{
1285#if EV_USE_REALTIME 1862#if EV_USE_REALTIME
1286 if (expect_true (have_realtime)) 1863 if (expect_true (have_realtime))
1287 { 1864 {
1288 struct timespec ts; 1865 struct timespec ts;
… …
1312 return ev_time (); 1889 return ev_time ();
1313} 1890}
1314 1891
1315#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
1316ev_tstamp 1893ev_tstamp
1317ev_now (EV_P) 1894ev_now (EV_P) EV_THROW
1318{ 1895{
1319 return ev_rt_now; 1896 return ev_rt_now;
1320} 1897}
1321#endif 1898#endif
1322 1899
1323void 1900void
1324ev_sleep (ev_tstamp delay) 1901ev_sleep (ev_tstamp delay) EV_THROW
1325{ 1902{
1326 if (delay > 0.) 1903 if (delay > 0.)
1327 { 1904 {
1328#if EV_USE_NANOSLEEP 1905#if EV_USE_NANOSLEEP
1329 struct timespec ts; 1906 struct timespec ts;
1330 1907
1331 EV_TS_SET (ts, delay); 1908 EV_TS_SET (ts, delay);
1332 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
1333#elif defined(_WIN32) 1910#elif defined _WIN32
1911 /* maybe this should round up, as ms is very low resolution */
1912 /* compared to select (µs) or nanosleep (ns) */
1334 Sleep ((unsigned long)(delay * 1e3)); 1913 Sleep ((unsigned long)(delay * 1e3));
1335#else 1914#else
1336 struct timeval tv; 1915 struct timeval tv;
1337 1916
1338 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1917 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1369 } 1948 }
1370 1949
1371 return ncur; 1950 return ncur;
1372} 1951}
1373 1952
1374static void * noinline ecb_cold 1953noinline ecb_cold
1954static void *
1375array_realloc (int elem, void *base, int *cur, int cnt) 1955array_realloc (int elem, void *base, int *cur, int cnt)
1376{ 1956{
1377 *cur = array_nextsize (elem, *cur, cnt); 1957 *cur = array_nextsize (elem, *cur, cnt);
1378 return ev_realloc (base, elem * *cur); 1958 return ev_realloc (base, elem * *cur);
1379} 1959}
… …
1382 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1962 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1383 1963
1384#define array_needsize(type,base,cur,cnt,init) \ 1964#define array_needsize(type,base,cur,cnt,init) \
1385 if (expect_false ((cnt) > (cur))) \ 1965 if (expect_false ((cnt) > (cur))) \
1386 { \ 1966 { \
1387 int ecb_unused ocur_ = (cur); \ 1967 ecb_unused int ocur_ = (cur); \
1388 (base) = (type *)array_realloc \ 1968 (base) = (type *)array_realloc \
1389 (sizeof (type), (base), &(cur), (cnt)); \ 1969 (sizeof (type), (base), &(cur), (cnt)); \
1390 init ((base) + (ocur_), (cur) - ocur_); \ 1970 init ((base) + (ocur_), (cur) - ocur_); \
1391 } 1971 }
1392 1972
… …
1404 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1984 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1405 1985
1406/*****************************************************************************/ 1986/*****************************************************************************/
1407 1987
1408/* dummy callback for pending events */ 1988/* dummy callback for pending events */
1409static void noinline 1989noinline
1990static void
1410pendingcb (EV_P_ ev_prepare *w, int revents) 1991pendingcb (EV_P_ ev_prepare *w, int revents)
1411{ 1992{
1412} 1993}
1413 1994
1414void noinline 1995noinline
1996void
1415ev_feed_event (EV_P_ void *w, int revents) 1997ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1416{ 1998{
1417 W w_ = (W)w; 1999 W w_ = (W)w;
1418 int pri = ABSPRI (w_); 2000 int pri = ABSPRI (w_);
1419 2001
1420 if (expect_false (w_->pending)) 2002 if (expect_false (w_->pending))
… …
1424 w_->pending = ++pendingcnt [pri]; 2006 w_->pending = ++pendingcnt [pri];
1425 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1426 pendings [pri][w_->pending - 1].w = w_; 2008 pendings [pri][w_->pending - 1].w = w_;
1427 pendings [pri][w_->pending - 1].events = revents; 2009 pendings [pri][w_->pending - 1].events = revents;
1428 } 2010 }
2011
2012 pendingpri = NUMPRI - 1;
1429} 2013}
1430 2014
1431inline_speed void 2015inline_speed void
1432feed_reverse (EV_P_ W w) 2016feed_reverse (EV_P_ W w)
1433{ 2017{
… …
1479 if (expect_true (!anfd->reify)) 2063 if (expect_true (!anfd->reify))
1480 fd_event_nocheck (EV_A_ fd, revents); 2064 fd_event_nocheck (EV_A_ fd, revents);
1481} 2065}
1482 2066
1483void 2067void
1484ev_feed_fd_event (EV_P_ int fd, int revents) 2068ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1485{ 2069{
1486 if (fd >= 0 && fd < anfdmax) 2070 if (fd >= 0 && fd < anfdmax)
1487 fd_event_nocheck (EV_A_ fd, revents); 2071 fd_event_nocheck (EV_A_ fd, revents);
1488} 2072}
1489 2073
… …
1547 2131
1548 fdchangecnt = 0; 2132 fdchangecnt = 0;
1549} 2133}
1550 2134
1551/* something about the given fd changed */ 2135/* something about the given fd changed */
1552inline_size void 2136inline_size
2137void
1553fd_change (EV_P_ int fd, int flags) 2138fd_change (EV_P_ int fd, int flags)
1554{ 2139{
1555 unsigned char reify = anfds [fd].reify; 2140 unsigned char reify = anfds [fd].reify;
1556 anfds [fd].reify |= flags; 2141 anfds [fd].reify |= flags;
1557 2142
… …
1562 fdchanges [fdchangecnt - 1] = fd; 2147 fdchanges [fdchangecnt - 1] = fd;
1563 } 2148 }
1564} 2149}
1565 2150
1566/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2151/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1567inline_speed void ecb_cold 2152inline_speed ecb_cold void
1568fd_kill (EV_P_ int fd) 2153fd_kill (EV_P_ int fd)
1569{ 2154{
1570 ev_io *w; 2155 ev_io *w;
1571 2156
1572 while ((w = (ev_io *)anfds [fd].head)) 2157 while ((w = (ev_io *)anfds [fd].head))
… …
1575 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2160 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1576 } 2161 }
1577} 2162}
1578 2163
1579/* check whether the given fd is actually valid, for error recovery */ 2164/* check whether the given fd is actually valid, for error recovery */
1580inline_size int ecb_cold 2165inline_size ecb_cold int
1581fd_valid (int fd) 2166fd_valid (int fd)
1582{ 2167{
1583#ifdef _WIN32 2168#ifdef _WIN32
1584 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2169 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1585#else 2170#else
1586 return fcntl (fd, F_GETFD) != -1; 2171 return fcntl (fd, F_GETFD) != -1;
1587#endif 2172#endif
1588} 2173}
1589 2174
1590/* called on EBADF to verify fds */ 2175/* called on EBADF to verify fds */
1591static void noinline ecb_cold 2176noinline ecb_cold
2177static void
1592fd_ebadf (EV_P) 2178fd_ebadf (EV_P)
1593{ 2179{
1594 int fd; 2180 int fd;
1595 2181
1596 for (fd = 0; fd < anfdmax; ++fd) 2182 for (fd = 0; fd < anfdmax; ++fd)
… …
1598 if (!fd_valid (fd) && errno == EBADF) 2184 if (!fd_valid (fd) && errno == EBADF)
1599 fd_kill (EV_A_ fd); 2185 fd_kill (EV_A_ fd);
1600} 2186}
1601 2187
1602/* called on ENOMEM in select/poll to kill some fds and retry */ 2188/* called on ENOMEM in select/poll to kill some fds and retry */
1603static void noinline ecb_cold 2189noinline ecb_cold
2190static void
1604fd_enomem (EV_P) 2191fd_enomem (EV_P)
1605{ 2192{
1606 int fd; 2193 int fd;
1607 2194
1608 for (fd = anfdmax; fd--; ) 2195 for (fd = anfdmax; fd--; )
… …
1612 break; 2199 break;
1613 } 2200 }
1614} 2201}
1615 2202
1616/* usually called after fork if backend needs to re-arm all fds from scratch */ 2203/* usually called after fork if backend needs to re-arm all fds from scratch */
1617static void noinline 2204noinline
2205static void
1618fd_rearm_all (EV_P) 2206fd_rearm_all (EV_P)
1619{ 2207{
1620 int fd; 2208 int fd;
1621 2209
1622 for (fd = 0; fd < anfdmax; ++fd) 2210 for (fd = 0; fd < anfdmax; ++fd)
… …
1803 2391
1804/*****************************************************************************/ 2392/*****************************************************************************/
1805 2393
1806#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2394#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1807 2395
1808static void noinline ecb_cold 2396noinline ecb_cold
2397static void
1809evpipe_init (EV_P) 2398evpipe_init (EV_P)
1810{ 2399{
1811 if (!ev_is_active (&pipe_w)) 2400 if (!ev_is_active (&pipe_w))
1812 { 2401 {
2402 int fds [2];
2403
1813# if EV_USE_EVENTFD 2404# if EV_USE_EVENTFD
2405 fds [0] = -1;
1814 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2406 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1815 if (evfd < 0 && errno == EINVAL) 2407 if (fds [1] < 0 && errno == EINVAL)
1816 evfd = eventfd (0, 0); 2408 fds [1] = eventfd (0, 0);
1817 2409
1818 if (evfd >= 0) 2410 if (fds [1] < 0)
2411# endif
1819 { 2412 {
2413 while (pipe (fds))
2414 ev_syserr ("(libev) error creating signal/async pipe");
2415
2416 fd_intern (fds [0]);
2417 }
2418
1820 evpipe [0] = -1; 2419 evpipe [0] = fds [0];
1821 fd_intern (evfd); /* doing it twice doesn't hurt */ 2420
1822 ev_io_set (&pipe_w, evfd, EV_READ); 2421 if (evpipe [1] < 0)
2422 evpipe [1] = fds [1]; /* first call, set write fd */
2423 else
2424 {
2425 /* on subsequent calls, do not change evpipe [1] */
2426 /* so that evpipe_write can always rely on its value. */
2427 /* this branch does not do anything sensible on windows, */
2428 /* so must not be executed on windows */
2429
2430 dup2 (fds [1], evpipe [1]);
2431 close (fds [1]);
2432 }
2433
2434 fd_intern (evpipe [1]);
2435
2436 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2437 ev_io_start (EV_A_ &pipe_w);
2438 ev_unref (EV_A); /* watcher should not keep loop alive */
2439 }
2440}
2441
2442inline_speed void
2443evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2444{
2445 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2446
2447 if (expect_true (*flag))
2448 return;
2449
2450 *flag = 1;
2451 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2452
2453 pipe_write_skipped = 1;
2454
2455 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2456
2457 if (pipe_write_wanted)
2458 {
2459 int old_errno;
2460
2461 pipe_write_skipped = 0;
2462 ECB_MEMORY_FENCE_RELEASE;
2463
2464 old_errno = errno; /* save errno because write will clobber it */
2465
2466#if EV_USE_EVENTFD
2467 if (evpipe [0] < 0)
2468 {
2469 uint64_t counter = 1;
2470 write (evpipe [1], &counter, sizeof (uint64_t));
1823 } 2471 }
1824 else 2472 else
1825# endif 2473#endif
1826 { 2474 {
1827 while (pipe (evpipe)) 2475#ifdef _WIN32
1828 ev_syserr ("(libev) error creating signal/async pipe"); 2476 WSABUF buf;
1829 2477 DWORD sent;
1830 fd_intern (evpipe [0]); 2478 buf.buf = &buf;
1831 fd_intern (evpipe [1]); 2479 buf.len = 1;
1832 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2480 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1833 } 2481#else
1834
1835 ev_io_start (EV_A_ &pipe_w);
1836 ev_unref (EV_A); /* watcher should not keep loop alive */
1837 }
1838}
1839
1840inline_speed void
1841evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1842{
1843 if (expect_true (*flag))
1844 return;
1845
1846 *flag = 1;
1847
1848 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1849
1850 pipe_write_skipped = 1;
1851
1852 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1853
1854 if (pipe_write_wanted)
1855 {
1856 int old_errno;
1857
1858 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1859
1860 old_errno = errno; /* save errno because write will clobber it */
1861
1862#if EV_USE_EVENTFD
1863 if (evfd >= 0)
1864 {
1865 uint64_t counter = 1;
1866 write (evfd, &counter, sizeof (uint64_t));
1867 }
1868 else
1869#endif
1870 {
1871 /* win32 people keep sending patches that change this write() to send() */
1872 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1873 /* so when you think this write should be a send instead, please find out */
1874 /* where your send() is from - it's definitely not the microsoft send, and */
1875 /* tell me. thank you. */
1876 write (evpipe [1], &(evpipe [1]), 1); 2482 write (evpipe [1], &(evpipe [1]), 1);
2483#endif
1877 } 2484 }
1878 2485
1879 errno = old_errno; 2486 errno = old_errno;
1880 } 2487 }
1881} 2488}
… …
1888 int i; 2495 int i;
1889 2496
1890 if (revents & EV_READ) 2497 if (revents & EV_READ)
1891 { 2498 {
1892#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1893 if (evfd >= 0) 2500 if (evpipe [0] < 0)
1894 { 2501 {
1895 uint64_t counter; 2502 uint64_t counter;
1896 read (evfd, &counter, sizeof (uint64_t)); 2503 read (evpipe [1], &counter, sizeof (uint64_t));
1897 } 2504 }
1898 else 2505 else
1899#endif 2506#endif
1900 { 2507 {
1901 char dummy; 2508 char dummy[4];
1902 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2509#ifdef _WIN32
2510 WSABUF buf;
2511 DWORD recvd;
2512 DWORD flags = 0;
2513 buf.buf = dummy;
2514 buf.len = sizeof (dummy);
2515 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2516#else
1903 read (evpipe [0], &dummy, 1); 2517 read (evpipe [0], &dummy, sizeof (dummy));
2518#endif
1904 } 2519 }
1905 } 2520 }
1906 2521
1907 pipe_write_skipped = 0; 2522 pipe_write_skipped = 0;
2523
2524 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1908 2525
1909#if EV_SIGNAL_ENABLE 2526#if EV_SIGNAL_ENABLE
1910 if (sig_pending) 2527 if (sig_pending)
1911 { 2528 {
1912 sig_pending = 0; 2529 sig_pending = 0;
2530
2531 ECB_MEMORY_FENCE;
1913 2532
1914 for (i = EV_NSIG - 1; i--; ) 2533 for (i = EV_NSIG - 1; i--; )
1915 if (expect_false (signals [i].pending)) 2534 if (expect_false (signals [i].pending))
1916 ev_feed_signal_event (EV_A_ i + 1); 2535 ev_feed_signal_event (EV_A_ i + 1);
1917 } 2536 }
… …
1919 2538
1920#if EV_ASYNC_ENABLE 2539#if EV_ASYNC_ENABLE
1921 if (async_pending) 2540 if (async_pending)
1922 { 2541 {
1923 async_pending = 0; 2542 async_pending = 0;
2543
2544 ECB_MEMORY_FENCE;
1924 2545
1925 for (i = asynccnt; i--; ) 2546 for (i = asynccnt; i--; )
1926 if (asyncs [i]->sent) 2547 if (asyncs [i]->sent)
1927 { 2548 {
1928 asyncs [i]->sent = 0; 2549 asyncs [i]->sent = 0;
2550 ECB_MEMORY_FENCE_RELEASE;
1929 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2551 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1930 } 2552 }
1931 } 2553 }
1932#endif 2554#endif
1933} 2555}
1934 2556
1935/*****************************************************************************/ 2557/*****************************************************************************/
1936 2558
1937void 2559void
1938ev_feed_signal (int signum) 2560ev_feed_signal (int signum) EV_THROW
1939{ 2561{
1940#if EV_MULTIPLICITY 2562#if EV_MULTIPLICITY
2563 EV_P;
2564 ECB_MEMORY_FENCE_ACQUIRE;
1941 EV_P = signals [signum - 1].loop; 2565 EV_A = signals [signum - 1].loop;
1942 2566
1943 if (!EV_A) 2567 if (!EV_A)
1944 return; 2568 return;
1945#endif 2569#endif
1946 2570
1947 if (!ev_active (&pipe_w))
1948 return;
1949
1950 signals [signum - 1].pending = 1; 2571 signals [signum - 1].pending = 1;
1951 evpipe_write (EV_A_ &sig_pending); 2572 evpipe_write (EV_A_ &sig_pending);
1952} 2573}
1953 2574
1954static void 2575static void
… …
1959#endif 2580#endif
1960 2581
1961 ev_feed_signal (signum); 2582 ev_feed_signal (signum);
1962} 2583}
1963 2584
1964void noinline 2585noinline
2586void
1965ev_feed_signal_event (EV_P_ int signum) 2587ev_feed_signal_event (EV_P_ int signum) EV_THROW
1966{ 2588{
1967 WL w; 2589 WL w;
1968 2590
1969 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2591 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1970 return; 2592 return;
1971 2593
1972 --signum; 2594 --signum;
1973 2595
1974#if EV_MULTIPLICITY 2596#if EV_MULTIPLICITY
… …
1978 if (expect_false (signals [signum].loop != EV_A)) 2600 if (expect_false (signals [signum].loop != EV_A))
1979 return; 2601 return;
1980#endif 2602#endif
1981 2603
1982 signals [signum].pending = 0; 2604 signals [signum].pending = 0;
2605 ECB_MEMORY_FENCE_RELEASE;
1983 2606
1984 for (w = signals [signum].head; w; w = w->next) 2607 for (w = signals [signum].head; w; w = w->next)
1985 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2608 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1986} 2609}
1987 2610
… …
2085#endif 2708#endif
2086#if EV_USE_SELECT 2709#if EV_USE_SELECT
2087# include "ev_select.c" 2710# include "ev_select.c"
2088#endif 2711#endif
2089 2712
2090int ecb_cold 2713ecb_cold int
2091ev_version_major (void) 2714ev_version_major (void) EV_THROW
2092{ 2715{
2093 return EV_VERSION_MAJOR; 2716 return EV_VERSION_MAJOR;
2094} 2717}
2095 2718
2096int ecb_cold 2719ecb_cold int
2097ev_version_minor (void) 2720ev_version_minor (void) EV_THROW
2098{ 2721{
2099 return EV_VERSION_MINOR; 2722 return EV_VERSION_MINOR;
2100} 2723}
2101 2724
2102/* return true if we are running with elevated privileges and should ignore env variables */ 2725/* return true if we are running with elevated privileges and should ignore env variables */
2103int inline_size ecb_cold 2726inline_size ecb_cold int
2104enable_secure (void) 2727enable_secure (void)
2105{ 2728{
2106#ifdef _WIN32 2729#ifdef _WIN32
2107 return 0; 2730 return 0;
2108#else 2731#else
2109 return getuid () != geteuid () 2732 return getuid () != geteuid ()
2110 || getgid () != getegid (); 2733 || getgid () != getegid ();
2111#endif 2734#endif
2112} 2735}
2113 2736
2114unsigned int ecb_cold 2737ecb_cold
2738unsigned int
2115ev_supported_backends (void) 2739ev_supported_backends (void) EV_THROW
2116{ 2740{
2117 unsigned int flags = 0; 2741 unsigned int flags = 0;
2118 2742
2119 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2743 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2120 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2744 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2123 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2747 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2124 2748
2125 return flags; 2749 return flags;
2126} 2750}
2127 2751
2128unsigned int ecb_cold 2752ecb_cold
2753unsigned int
2129ev_recommended_backends (void) 2754ev_recommended_backends (void) EV_THROW
2130{ 2755{
2131 unsigned int flags = ev_supported_backends (); 2756 unsigned int flags = ev_supported_backends ();
2132 2757
2133#ifndef __NetBSD__ 2758#ifndef __NetBSD__
2134 /* kqueue is borked on everything but netbsd apparently */ 2759 /* kqueue is borked on everything but netbsd apparently */
… …
2145#endif 2770#endif
2146 2771
2147 return flags; 2772 return flags;
2148} 2773}
2149 2774
2150unsigned int ecb_cold 2775ecb_cold
2776unsigned int
2151ev_embeddable_backends (void) 2777ev_embeddable_backends (void) EV_THROW
2152{ 2778{
2153 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2779 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2154 2780
2155 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2781 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2156 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2782 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2158 2784
2159 return flags; 2785 return flags;
2160} 2786}
2161 2787
2162unsigned int 2788unsigned int
2163ev_backend (EV_P) 2789ev_backend (EV_P) EV_THROW
2164{ 2790{
2165 return backend; 2791 return backend;
2166} 2792}
2167 2793
2168#if EV_FEATURE_API 2794#if EV_FEATURE_API
2169unsigned int 2795unsigned int
2170ev_iteration (EV_P) 2796ev_iteration (EV_P) EV_THROW
2171{ 2797{
2172 return loop_count; 2798 return loop_count;
2173} 2799}
2174 2800
2175unsigned int 2801unsigned int
2176ev_depth (EV_P) 2802ev_depth (EV_P) EV_THROW
2177{ 2803{
2178 return loop_depth; 2804 return loop_depth;
2179} 2805}
2180 2806
2181void 2807void
2182ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2808ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2183{ 2809{
2184 io_blocktime = interval; 2810 io_blocktime = interval;
2185} 2811}
2186 2812
2187void 2813void
2188ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2814ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2189{ 2815{
2190 timeout_blocktime = interval; 2816 timeout_blocktime = interval;
2191} 2817}
2192 2818
2193void 2819void
2194ev_set_userdata (EV_P_ void *data) 2820ev_set_userdata (EV_P_ void *data) EV_THROW
2195{ 2821{
2196 userdata = data; 2822 userdata = data;
2197} 2823}
2198 2824
2199void * 2825void *
2200ev_userdata (EV_P) 2826ev_userdata (EV_P) EV_THROW
2201{ 2827{
2202 return userdata; 2828 return userdata;
2203} 2829}
2204 2830
2205void 2831void
2206ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2832ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2207{ 2833{
2208 invoke_cb = invoke_pending_cb; 2834 invoke_cb = invoke_pending_cb;
2209} 2835}
2210 2836
2211void 2837void
2212ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2838ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2213{ 2839{
2214 release_cb = release; 2840 release_cb = release;
2215 acquire_cb = acquire; 2841 acquire_cb = acquire;
2216} 2842}
2217#endif 2843#endif
2218 2844
2219/* initialise a loop structure, must be zero-initialised */ 2845/* initialise a loop structure, must be zero-initialised */
2220static void noinline ecb_cold 2846noinline ecb_cold
2847static void
2221loop_init (EV_P_ unsigned int flags) 2848loop_init (EV_P_ unsigned int flags) EV_THROW
2222{ 2849{
2223 if (!backend) 2850 if (!backend)
2224 { 2851 {
2225 origflags = flags; 2852 origflags = flags;
2226 2853
… …
2271#if EV_ASYNC_ENABLE 2898#if EV_ASYNC_ENABLE
2272 async_pending = 0; 2899 async_pending = 0;
2273#endif 2900#endif
2274 pipe_write_skipped = 0; 2901 pipe_write_skipped = 0;
2275 pipe_write_wanted = 0; 2902 pipe_write_wanted = 0;
2903 evpipe [0] = -1;
2904 evpipe [1] = -1;
2276#if EV_USE_INOTIFY 2905#if EV_USE_INOTIFY
2277 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2906 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2278#endif 2907#endif
2279#if EV_USE_SIGNALFD 2908#if EV_USE_SIGNALFD
2280 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2909 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2310#endif 2939#endif
2311 } 2940 }
2312} 2941}
2313 2942
2314/* free up a loop structure */ 2943/* free up a loop structure */
2315void ecb_cold 2944ecb_cold
2945void
2316ev_loop_destroy (EV_P) 2946ev_loop_destroy (EV_P)
2317{ 2947{
2318 int i; 2948 int i;
2319 2949
2320#if EV_MULTIPLICITY 2950#if EV_MULTIPLICITY
… …
2331 EV_INVOKE_PENDING; 2961 EV_INVOKE_PENDING;
2332 } 2962 }
2333#endif 2963#endif
2334 2964
2335#if EV_CHILD_ENABLE 2965#if EV_CHILD_ENABLE
2336 if (ev_is_active (&childev)) 2966 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2337 { 2967 {
2338 ev_ref (EV_A); /* child watcher */ 2968 ev_ref (EV_A); /* child watcher */
2339 ev_signal_stop (EV_A_ &childev); 2969 ev_signal_stop (EV_A_ &childev);
2340 } 2970 }
2341#endif 2971#endif
… …
2343 if (ev_is_active (&pipe_w)) 2973 if (ev_is_active (&pipe_w))
2344 { 2974 {
2345 /*ev_ref (EV_A);*/ 2975 /*ev_ref (EV_A);*/
2346 /*ev_io_stop (EV_A_ &pipe_w);*/ 2976 /*ev_io_stop (EV_A_ &pipe_w);*/
2347 2977
2348#if EV_USE_EVENTFD
2349 if (evfd >= 0)
2350 close (evfd);
2351#endif
2352
2353 if (evpipe [0] >= 0)
2354 {
2355 EV_WIN32_CLOSE_FD (evpipe [0]); 2978 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2356 EV_WIN32_CLOSE_FD (evpipe [1]); 2979 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2357 }
2358 } 2980 }
2359 2981
2360#if EV_USE_SIGNALFD 2982#if EV_USE_SIGNALFD
2361 if (ev_is_active (&sigfd_w)) 2983 if (ev_is_active (&sigfd_w))
2362 close (sigfd); 2984 close (sigfd);
… …
2448#endif 3070#endif
2449#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
2450 infy_fork (EV_A); 3072 infy_fork (EV_A);
2451#endif 3073#endif
2452 3074
3075#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2453 if (ev_is_active (&pipe_w)) 3076 if (ev_is_active (&pipe_w) && postfork != 2)
2454 { 3077 {
2455 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3078 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2456 3079
2457 ev_ref (EV_A); 3080 ev_ref (EV_A);
2458 ev_io_stop (EV_A_ &pipe_w); 3081 ev_io_stop (EV_A_ &pipe_w);
2459 3082
2460#if EV_USE_EVENTFD
2461 if (evfd >= 0)
2462 close (evfd);
2463#endif
2464
2465 if (evpipe [0] >= 0) 3083 if (evpipe [0] >= 0)
2466 {
2467 EV_WIN32_CLOSE_FD (evpipe [0]); 3084 EV_WIN32_CLOSE_FD (evpipe [0]);
2468 EV_WIN32_CLOSE_FD (evpipe [1]);
2469 }
2470 3085
2471#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2472 evpipe_init (EV_A); 3086 evpipe_init (EV_A);
2473 /* now iterate over everything, in case we missed something */ 3087 /* iterate over everything, in case we missed something before */
2474 pipecb (EV_A_ &pipe_w, EV_READ); 3088 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2475#endif
2476 } 3089 }
3090#endif
2477 3091
2478 postfork = 0; 3092 postfork = 0;
2479} 3093}
2480 3094
2481#if EV_MULTIPLICITY 3095#if EV_MULTIPLICITY
2482 3096
3097ecb_cold
2483struct ev_loop * ecb_cold 3098struct ev_loop *
2484ev_loop_new (unsigned int flags) 3099ev_loop_new (unsigned int flags) EV_THROW
2485{ 3100{
2486 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3101 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2487 3102
2488 memset (EV_A, 0, sizeof (struct ev_loop)); 3103 memset (EV_A, 0, sizeof (struct ev_loop));
2489 loop_init (EV_A_ flags); 3104 loop_init (EV_A_ flags);
… …
2496} 3111}
2497 3112
2498#endif /* multiplicity */ 3113#endif /* multiplicity */
2499 3114
2500#if EV_VERIFY 3115#if EV_VERIFY
2501static void noinline ecb_cold 3116noinline ecb_cold
3117static void
2502verify_watcher (EV_P_ W w) 3118verify_watcher (EV_P_ W w)
2503{ 3119{
2504 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3120 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2505 3121
2506 if (w->pending) 3122 if (w->pending)
2507 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3123 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2508} 3124}
2509 3125
2510static void noinline ecb_cold 3126noinline ecb_cold
3127static void
2511verify_heap (EV_P_ ANHE *heap, int N) 3128verify_heap (EV_P_ ANHE *heap, int N)
2512{ 3129{
2513 int i; 3130 int i;
2514 3131
2515 for (i = HEAP0; i < N + HEAP0; ++i) 3132 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2520 3137
2521 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3138 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2522 } 3139 }
2523} 3140}
2524 3141
2525static void noinline ecb_cold 3142noinline ecb_cold
3143static void
2526array_verify (EV_P_ W *ws, int cnt) 3144array_verify (EV_P_ W *ws, int cnt)
2527{ 3145{
2528 while (cnt--) 3146 while (cnt--)
2529 { 3147 {
2530 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3148 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2533} 3151}
2534#endif 3152#endif
2535 3153
2536#if EV_FEATURE_API 3154#if EV_FEATURE_API
2537void ecb_cold 3155void ecb_cold
2538ev_verify (EV_P) 3156ev_verify (EV_P) EV_THROW
2539{ 3157{
2540#if EV_VERIFY 3158#if EV_VERIFY
2541 int i; 3159 int i;
2542 WL w; 3160 WL w, w2;
2543 3161
2544 assert (activecnt >= -1); 3162 assert (activecnt >= -1);
2545 3163
2546 assert (fdchangemax >= fdchangecnt); 3164 assert (fdchangemax >= fdchangecnt);
2547 for (i = 0; i < fdchangecnt; ++i) 3165 for (i = 0; i < fdchangecnt; ++i)
2548 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3166 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2549 3167
2550 assert (anfdmax >= 0); 3168 assert (anfdmax >= 0);
2551 for (i = 0; i < anfdmax; ++i) 3169 for (i = 0; i < anfdmax; ++i)
3170 {
3171 int j = 0;
3172
2552 for (w = anfds [i].head; w; w = w->next) 3173 for (w = w2 = anfds [i].head; w; w = w->next)
2553 { 3174 {
2554 verify_watcher (EV_A_ (W)w); 3175 verify_watcher (EV_A_ (W)w);
3176
3177 if (j++ & 1)
3178 {
3179 assert (("libev: io watcher list contains a loop", w != w2));
3180 w2 = w2->next;
3181 }
3182
2555 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3183 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2556 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3184 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2557 } 3185 }
3186 }
2558 3187
2559 assert (timermax >= timercnt); 3188 assert (timermax >= timercnt);
2560 verify_heap (EV_A_ timers, timercnt); 3189 verify_heap (EV_A_ timers, timercnt);
2561 3190
2562#if EV_PERIODIC_ENABLE 3191#if EV_PERIODIC_ENABLE
… …
2608#endif 3237#endif
2609} 3238}
2610#endif 3239#endif
2611 3240
2612#if EV_MULTIPLICITY 3241#if EV_MULTIPLICITY
3242ecb_cold
2613struct ev_loop * ecb_cold 3243struct ev_loop *
2614#else 3244#else
2615int 3245int
2616#endif 3246#endif
2617ev_default_loop (unsigned int flags) 3247ev_default_loop (unsigned int flags) EV_THROW
2618{ 3248{
2619 if (!ev_default_loop_ptr) 3249 if (!ev_default_loop_ptr)
2620 { 3250 {
2621#if EV_MULTIPLICITY 3251#if EV_MULTIPLICITY
2622 EV_P = ev_default_loop_ptr = &default_loop_struct; 3252 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2641 3271
2642 return ev_default_loop_ptr; 3272 return ev_default_loop_ptr;
2643} 3273}
2644 3274
2645void 3275void
2646ev_loop_fork (EV_P) 3276ev_loop_fork (EV_P) EV_THROW
2647{ 3277{
2648 postfork = 1; /* must be in line with ev_default_fork */ 3278 postfork = 1;
2649} 3279}
2650 3280
2651/*****************************************************************************/ 3281/*****************************************************************************/
2652 3282
2653void 3283void
… …
2655{ 3285{
2656 EV_CB_INVOKE ((W)w, revents); 3286 EV_CB_INVOKE ((W)w, revents);
2657} 3287}
2658 3288
2659unsigned int 3289unsigned int
2660ev_pending_count (EV_P) 3290ev_pending_count (EV_P) EV_THROW
2661{ 3291{
2662 int pri; 3292 int pri;
2663 unsigned int count = 0; 3293 unsigned int count = 0;
2664 3294
2665 for (pri = NUMPRI; pri--; ) 3295 for (pri = NUMPRI; pri--; )
2666 count += pendingcnt [pri]; 3296 count += pendingcnt [pri];
2667 3297
2668 return count; 3298 return count;
2669} 3299}
2670 3300
2671void noinline 3301noinline
3302void
2672ev_invoke_pending (EV_P) 3303ev_invoke_pending (EV_P)
2673{ 3304{
2674 int pri; 3305 pendingpri = NUMPRI;
2675 3306
2676 for (pri = NUMPRI; pri--; ) 3307 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3308 {
3309 --pendingpri;
3310
2677 while (pendingcnt [pri]) 3311 while (pendingcnt [pendingpri])
2678 { 3312 {
2679 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3313 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2680 3314
2681 p->w->pending = 0; 3315 p->w->pending = 0;
2682 EV_CB_INVOKE (p->w, p->events); 3316 EV_CB_INVOKE (p->w, p->events);
2683 EV_FREQUENT_CHECK; 3317 EV_FREQUENT_CHECK;
2684 } 3318 }
3319 }
2685} 3320}
2686 3321
2687#if EV_IDLE_ENABLE 3322#if EV_IDLE_ENABLE
2688/* make idle watchers pending. this handles the "call-idle */ 3323/* make idle watchers pending. this handles the "call-idle */
2689/* only when higher priorities are idle" logic */ 3324/* only when higher priorities are idle" logic */
… …
2747 } 3382 }
2748} 3383}
2749 3384
2750#if EV_PERIODIC_ENABLE 3385#if EV_PERIODIC_ENABLE
2751 3386
2752static void noinline 3387noinline
3388static void
2753periodic_recalc (EV_P_ ev_periodic *w) 3389periodic_recalc (EV_P_ ev_periodic *w)
2754{ 3390{
2755 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3391 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2756 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3392 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2757 3393
… …
2779{ 3415{
2780 EV_FREQUENT_CHECK; 3416 EV_FREQUENT_CHECK;
2781 3417
2782 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3418 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2783 { 3419 {
2784 int feed_count = 0;
2785
2786 do 3420 do
2787 { 3421 {
2788 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3422 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2789 3423
2790 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3424 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2817 } 3451 }
2818} 3452}
2819 3453
2820/* simply recalculate all periodics */ 3454/* simply recalculate all periodics */
2821/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3455/* TODO: maybe ensure that at least one event happens when jumping forward? */
2822static void noinline ecb_cold 3456noinline ecb_cold
3457static void
2823periodics_reschedule (EV_P) 3458periodics_reschedule (EV_P)
2824{ 3459{
2825 int i; 3460 int i;
2826 3461
2827 /* adjust periodics after time jump */ 3462 /* adjust periodics after time jump */
… …
2840 reheap (periodics, periodiccnt); 3475 reheap (periodics, periodiccnt);
2841} 3476}
2842#endif 3477#endif
2843 3478
2844/* adjust all timers by a given offset */ 3479/* adjust all timers by a given offset */
2845static void noinline ecb_cold 3480noinline ecb_cold
3481static void
2846timers_reschedule (EV_P_ ev_tstamp adjust) 3482timers_reschedule (EV_P_ ev_tstamp adjust)
2847{ 3483{
2848 int i; 3484 int i;
2849 3485
2850 for (i = 0; i < timercnt; ++i) 3486 for (i = 0; i < timercnt; ++i)
… …
2924 3560
2925 mn_now = ev_rt_now; 3561 mn_now = ev_rt_now;
2926 } 3562 }
2927} 3563}
2928 3564
2929void 3565int
2930ev_run (EV_P_ int flags) 3566ev_run (EV_P_ int flags)
2931{ 3567{
2932#if EV_FEATURE_API 3568#if EV_FEATURE_API
2933 ++loop_depth; 3569 ++loop_depth;
2934#endif 3570#endif
… …
3049 backend_poll (EV_A_ waittime); 3685 backend_poll (EV_A_ waittime);
3050 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3686 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3051 3687
3052 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3688 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3053 3689
3690 ECB_MEMORY_FENCE_ACQUIRE;
3054 if (pipe_write_skipped) 3691 if (pipe_write_skipped)
3055 { 3692 {
3056 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3693 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3057 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3694 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3058 } 3695 }
… …
3091 loop_done = EVBREAK_CANCEL; 3728 loop_done = EVBREAK_CANCEL;
3092 3729
3093#if EV_FEATURE_API 3730#if EV_FEATURE_API
3094 --loop_depth; 3731 --loop_depth;
3095#endif 3732#endif
3096}
3097 3733
3734 return activecnt;
3735}
3736
3098void 3737void
3099ev_break (EV_P_ int how) 3738ev_break (EV_P_ int how) EV_THROW
3100{ 3739{
3101 loop_done = how; 3740 loop_done = how;
3102} 3741}
3103 3742
3104void 3743void
3105ev_ref (EV_P) 3744ev_ref (EV_P) EV_THROW
3106{ 3745{
3107 ++activecnt; 3746 ++activecnt;
3108} 3747}
3109 3748
3110void 3749void
3111ev_unref (EV_P) 3750ev_unref (EV_P) EV_THROW
3112{ 3751{
3113 --activecnt; 3752 --activecnt;
3114} 3753}
3115 3754
3116void 3755void
3117ev_now_update (EV_P) 3756ev_now_update (EV_P) EV_THROW
3118{ 3757{
3119 time_update (EV_A_ 1e100); 3758 time_update (EV_A_ 1e100);
3120} 3759}
3121 3760
3122void 3761void
3123ev_suspend (EV_P) 3762ev_suspend (EV_P) EV_THROW
3124{ 3763{
3125 ev_now_update (EV_A); 3764 ev_now_update (EV_A);
3126} 3765}
3127 3766
3128void 3767void
3129ev_resume (EV_P) 3768ev_resume (EV_P) EV_THROW
3130{ 3769{
3131 ev_tstamp mn_prev = mn_now; 3770 ev_tstamp mn_prev = mn_now;
3132 3771
3133 ev_now_update (EV_A); 3772 ev_now_update (EV_A);
3134 timers_reschedule (EV_A_ mn_now - mn_prev); 3773 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3173 w->pending = 0; 3812 w->pending = 0;
3174 } 3813 }
3175} 3814}
3176 3815
3177int 3816int
3178ev_clear_pending (EV_P_ void *w) 3817ev_clear_pending (EV_P_ void *w) EV_THROW
3179{ 3818{
3180 W w_ = (W)w; 3819 W w_ = (W)w;
3181 int pending = w_->pending; 3820 int pending = w_->pending;
3182 3821
3183 if (expect_true (pending)) 3822 if (expect_true (pending))
… …
3215 w->active = 0; 3854 w->active = 0;
3216} 3855}
3217 3856
3218/*****************************************************************************/ 3857/*****************************************************************************/
3219 3858
3220void noinline 3859noinline
3860void
3221ev_io_start (EV_P_ ev_io *w) 3861ev_io_start (EV_P_ ev_io *w) EV_THROW
3222{ 3862{
3223 int fd = w->fd; 3863 int fd = w->fd;
3224 3864
3225 if (expect_false (ev_is_active (w))) 3865 if (expect_false (ev_is_active (w)))
3226 return; 3866 return;
… …
3232 3872
3233 ev_start (EV_A_ (W)w, 1); 3873 ev_start (EV_A_ (W)w, 1);
3234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3874 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3235 wlist_add (&anfds[fd].head, (WL)w); 3875 wlist_add (&anfds[fd].head, (WL)w);
3236 3876
3877 /* common bug, apparently */
3878 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3879
3237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3880 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3238 w->events &= ~EV__IOFDSET; 3881 w->events &= ~EV__IOFDSET;
3239 3882
3240 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
3241} 3884}
3242 3885
3243void noinline 3886noinline
3887void
3244ev_io_stop (EV_P_ ev_io *w) 3888ev_io_stop (EV_P_ ev_io *w) EV_THROW
3245{ 3889{
3246 clear_pending (EV_A_ (W)w); 3890 clear_pending (EV_A_ (W)w);
3247 if (expect_false (!ev_is_active (w))) 3891 if (expect_false (!ev_is_active (w)))
3248 return; 3892 return;
3249 3893
… …
3257 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3901 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3258 3902
3259 EV_FREQUENT_CHECK; 3903 EV_FREQUENT_CHECK;
3260} 3904}
3261 3905
3262void noinline 3906noinline
3907void
3263ev_timer_start (EV_P_ ev_timer *w) 3908ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3264{ 3909{
3265 if (expect_false (ev_is_active (w))) 3910 if (expect_false (ev_is_active (w)))
3266 return; 3911 return;
3267 3912
3268 ev_at (w) += mn_now; 3913 ev_at (w) += mn_now;
… …
3281 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
3282 3927
3283 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3928 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3284} 3929}
3285 3930
3286void noinline 3931noinline
3932void
3287ev_timer_stop (EV_P_ ev_timer *w) 3933ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3288{ 3934{
3289 clear_pending (EV_A_ (W)w); 3935 clear_pending (EV_A_ (W)w);
3290 if (expect_false (!ev_is_active (w))) 3936 if (expect_false (!ev_is_active (w)))
3291 return; 3937 return;
3292 3938
… …
3311 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
3312 3958
3313 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
3314} 3960}
3315 3961
3316void noinline 3962noinline
3963void
3317ev_timer_again (EV_P_ ev_timer *w) 3964ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3318{ 3965{
3319 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3320 3967
3321 clear_pending (EV_A_ (W)w); 3968 clear_pending (EV_A_ (W)w);
3322 3969
… …
3339 3986
3340 EV_FREQUENT_CHECK; 3987 EV_FREQUENT_CHECK;
3341} 3988}
3342 3989
3343ev_tstamp 3990ev_tstamp
3344ev_timer_remaining (EV_P_ ev_timer *w) 3991ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3345{ 3992{
3346 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3993 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3347} 3994}
3348 3995
3349#if EV_PERIODIC_ENABLE 3996#if EV_PERIODIC_ENABLE
3350void noinline 3997noinline
3998void
3351ev_periodic_start (EV_P_ ev_periodic *w) 3999ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3352{ 4000{
3353 if (expect_false (ev_is_active (w))) 4001 if (expect_false (ev_is_active (w)))
3354 return; 4002 return;
3355 4003
3356 if (w->reschedule_cb) 4004 if (w->reschedule_cb)
… …
3375 EV_FREQUENT_CHECK; 4023 EV_FREQUENT_CHECK;
3376 4024
3377 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4025 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3378} 4026}
3379 4027
3380void noinline 4028noinline
4029void
3381ev_periodic_stop (EV_P_ ev_periodic *w) 4030ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3382{ 4031{
3383 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
3384 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
3385 return; 4034 return;
3386 4035
… …
3403 ev_stop (EV_A_ (W)w); 4052 ev_stop (EV_A_ (W)w);
3404 4053
3405 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
3406} 4055}
3407 4056
3408void noinline 4057noinline
4058void
3409ev_periodic_again (EV_P_ ev_periodic *w) 4059ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3410{ 4060{
3411 /* TODO: use adjustheap and recalculation */ 4061 /* TODO: use adjustheap and recalculation */
3412 ev_periodic_stop (EV_A_ w); 4062 ev_periodic_stop (EV_A_ w);
3413 ev_periodic_start (EV_A_ w); 4063 ev_periodic_start (EV_A_ w);
3414} 4064}
… …
3418# define SA_RESTART 0 4068# define SA_RESTART 0
3419#endif 4069#endif
3420 4070
3421#if EV_SIGNAL_ENABLE 4071#if EV_SIGNAL_ENABLE
3422 4072
3423void noinline 4073noinline
4074void
3424ev_signal_start (EV_P_ ev_signal *w) 4075ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3425{ 4076{
3426 if (expect_false (ev_is_active (w))) 4077 if (expect_false (ev_is_active (w)))
3427 return; 4078 return;
3428 4079
3429 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4080 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3431#if EV_MULTIPLICITY 4082#if EV_MULTIPLICITY
3432 assert (("libev: a signal must not be attached to two different loops", 4083 assert (("libev: a signal must not be attached to two different loops",
3433 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4084 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3434 4085
3435 signals [w->signum - 1].loop = EV_A; 4086 signals [w->signum - 1].loop = EV_A;
4087 ECB_MEMORY_FENCE_RELEASE;
3436#endif 4088#endif
3437 4089
3438 EV_FREQUENT_CHECK; 4090 EV_FREQUENT_CHECK;
3439 4091
3440#if EV_USE_SIGNALFD 4092#if EV_USE_SIGNALFD
… …
3499 } 4151 }
3500 4152
3501 EV_FREQUENT_CHECK; 4153 EV_FREQUENT_CHECK;
3502} 4154}
3503 4155
3504void noinline 4156noinline
4157void
3505ev_signal_stop (EV_P_ ev_signal *w) 4158ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3506{ 4159{
3507 clear_pending (EV_A_ (W)w); 4160 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 4161 if (expect_false (!ev_is_active (w)))
3509 return; 4162 return;
3510 4163
… …
3541#endif 4194#endif
3542 4195
3543#if EV_CHILD_ENABLE 4196#if EV_CHILD_ENABLE
3544 4197
3545void 4198void
3546ev_child_start (EV_P_ ev_child *w) 4199ev_child_start (EV_P_ ev_child *w) EV_THROW
3547{ 4200{
3548#if EV_MULTIPLICITY 4201#if EV_MULTIPLICITY
3549 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4202 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3550#endif 4203#endif
3551 if (expect_false (ev_is_active (w))) 4204 if (expect_false (ev_is_active (w)))
… …
3558 4211
3559 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
3560} 4213}
3561 4214
3562void 4215void
3563ev_child_stop (EV_P_ ev_child *w) 4216ev_child_stop (EV_P_ ev_child *w) EV_THROW
3564{ 4217{
3565 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3566 if (expect_false (!ev_is_active (w))) 4219 if (expect_false (!ev_is_active (w)))
3567 return; 4220 return;
3568 4221
… …
3585 4238
3586#define DEF_STAT_INTERVAL 5.0074891 4239#define DEF_STAT_INTERVAL 5.0074891
3587#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4240#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3588#define MIN_STAT_INTERVAL 0.1074891 4241#define MIN_STAT_INTERVAL 0.1074891
3589 4242
3590static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4243noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3591 4244
3592#if EV_USE_INOTIFY 4245#if EV_USE_INOTIFY
3593 4246
3594/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4247/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3595# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4248# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3596 4249
3597static void noinline 4250noinline
4251static void
3598infy_add (EV_P_ ev_stat *w) 4252infy_add (EV_P_ ev_stat *w)
3599{ 4253{
3600 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); 4254 w->wd = inotify_add_watch (fs_fd, w->path,
4255 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4256 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4257 | IN_DONT_FOLLOW | IN_MASK_ADD);
3601 4258
3602 if (w->wd >= 0) 4259 if (w->wd >= 0)
3603 { 4260 {
3604 struct statfs sfs; 4261 struct statfs sfs;
3605 4262
… …
3609 4266
3610 if (!fs_2625) 4267 if (!fs_2625)
3611 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4268 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3612 else if (!statfs (w->path, &sfs) 4269 else if (!statfs (w->path, &sfs)
3613 && (sfs.f_type == 0x1373 /* devfs */ 4270 && (sfs.f_type == 0x1373 /* devfs */
4271 || sfs.f_type == 0x4006 /* fat */
4272 || sfs.f_type == 0x4d44 /* msdos */
3614 || sfs.f_type == 0xEF53 /* ext2/3 */ 4273 || sfs.f_type == 0xEF53 /* ext2/3 */
4274 || sfs.f_type == 0x72b6 /* jffs2 */
4275 || sfs.f_type == 0x858458f6 /* ramfs */
4276 || sfs.f_type == 0x5346544e /* ntfs */
3615 || sfs.f_type == 0x3153464a /* jfs */ 4277 || sfs.f_type == 0x3153464a /* jfs */
4278 || sfs.f_type == 0x9123683e /* btrfs */
3616 || sfs.f_type == 0x52654973 /* reiser3 */ 4279 || sfs.f_type == 0x52654973 /* reiser3 */
3617 || sfs.f_type == 0x01021994 /* tempfs */ 4280 || sfs.f_type == 0x01021994 /* tmpfs */
3618 || sfs.f_type == 0x58465342 /* xfs */)) 4281 || sfs.f_type == 0x58465342 /* xfs */))
3619 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4282 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3620 else 4283 else
3621 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4284 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3622 } 4285 }
… …
3657 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3658 ev_timer_again (EV_A_ &w->timer); 4321 ev_timer_again (EV_A_ &w->timer);
3659 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4322 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3660} 4323}
3661 4324
3662static void noinline 4325noinline
4326static void
3663infy_del (EV_P_ ev_stat *w) 4327infy_del (EV_P_ ev_stat *w)
3664{ 4328{
3665 int slot; 4329 int slot;
3666 int wd = w->wd; 4330 int wd = w->wd;
3667 4331
… …
3674 4338
3675 /* remove this watcher, if others are watching it, they will rearm */ 4339 /* remove this watcher, if others are watching it, they will rearm */
3676 inotify_rm_watch (fs_fd, wd); 4340 inotify_rm_watch (fs_fd, wd);
3677} 4341}
3678 4342
3679static void noinline 4343noinline
4344static void
3680infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4345infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3681{ 4346{
3682 if (slot < 0) 4347 if (slot < 0)
3683 /* overflow, need to check for all hash slots */ 4348 /* overflow, need to check for all hash slots */
3684 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4349 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3720 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4385 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3721 ofs += sizeof (struct inotify_event) + ev->len; 4386 ofs += sizeof (struct inotify_event) + ev->len;
3722 } 4387 }
3723} 4388}
3724 4389
3725inline_size void ecb_cold 4390inline_size ecb_cold
4391void
3726ev_check_2625 (EV_P) 4392ev_check_2625 (EV_P)
3727{ 4393{
3728 /* kernels < 2.6.25 are borked 4394 /* kernels < 2.6.25 are borked
3729 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4395 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3730 */ 4396 */
… …
3735} 4401}
3736 4402
3737inline_size int 4403inline_size int
3738infy_newfd (void) 4404infy_newfd (void)
3739{ 4405{
3740#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4406#if defined IN_CLOEXEC && defined IN_NONBLOCK
3741 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4407 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3742 if (fd >= 0) 4408 if (fd >= 0)
3743 return fd; 4409 return fd;
3744#endif 4410#endif
3745 return inotify_init (); 4411 return inotify_init ();
… …
3820#else 4486#else
3821# define EV_LSTAT(p,b) lstat (p, b) 4487# define EV_LSTAT(p,b) lstat (p, b)
3822#endif 4488#endif
3823 4489
3824void 4490void
3825ev_stat_stat (EV_P_ ev_stat *w) 4491ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3826{ 4492{
3827 if (lstat (w->path, &w->attr) < 0) 4493 if (lstat (w->path, &w->attr) < 0)
3828 w->attr.st_nlink = 0; 4494 w->attr.st_nlink = 0;
3829 else if (!w->attr.st_nlink) 4495 else if (!w->attr.st_nlink)
3830 w->attr.st_nlink = 1; 4496 w->attr.st_nlink = 1;
3831} 4497}
3832 4498
3833static void noinline 4499noinline
4500static void
3834stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4501stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3835{ 4502{
3836 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4503 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3837 4504
3838 ev_statdata prev = w->attr; 4505 ev_statdata prev = w->attr;
… …
3869 ev_feed_event (EV_A_ w, EV_STAT); 4536 ev_feed_event (EV_A_ w, EV_STAT);
3870 } 4537 }
3871} 4538}
3872 4539
3873void 4540void
3874ev_stat_start (EV_P_ ev_stat *w) 4541ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3875{ 4542{
3876 if (expect_false (ev_is_active (w))) 4543 if (expect_false (ev_is_active (w)))
3877 return; 4544 return;
3878 4545
3879 ev_stat_stat (EV_A_ w); 4546 ev_stat_stat (EV_A_ w);
… …
3900 4567
3901 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3902} 4569}
3903 4570
3904void 4571void
3905ev_stat_stop (EV_P_ ev_stat *w) 4572ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3906{ 4573{
3907 clear_pending (EV_A_ (W)w); 4574 clear_pending (EV_A_ (W)w);
3908 if (expect_false (!ev_is_active (w))) 4575 if (expect_false (!ev_is_active (w)))
3909 return; 4576 return;
3910 4577
… …
3926} 4593}
3927#endif 4594#endif
3928 4595
3929#if EV_IDLE_ENABLE 4596#if EV_IDLE_ENABLE
3930void 4597void
3931ev_idle_start (EV_P_ ev_idle *w) 4598ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3932{ 4599{
3933 if (expect_false (ev_is_active (w))) 4600 if (expect_false (ev_is_active (w)))
3934 return; 4601 return;
3935 4602
3936 pri_adjust (EV_A_ (W)w); 4603 pri_adjust (EV_A_ (W)w);
… …
3949 4616
3950 EV_FREQUENT_CHECK; 4617 EV_FREQUENT_CHECK;
3951} 4618}
3952 4619
3953void 4620void
3954ev_idle_stop (EV_P_ ev_idle *w) 4621ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3955{ 4622{
3956 clear_pending (EV_A_ (W)w); 4623 clear_pending (EV_A_ (W)w);
3957 if (expect_false (!ev_is_active (w))) 4624 if (expect_false (!ev_is_active (w)))
3958 return; 4625 return;
3959 4626
… …
3973} 4640}
3974#endif 4641#endif
3975 4642
3976#if EV_PREPARE_ENABLE 4643#if EV_PREPARE_ENABLE
3977void 4644void
3978ev_prepare_start (EV_P_ ev_prepare *w) 4645ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3979{ 4646{
3980 if (expect_false (ev_is_active (w))) 4647 if (expect_false (ev_is_active (w)))
3981 return; 4648 return;
3982 4649
3983 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
… …
3988 4655
3989 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
3990} 4657}
3991 4658
3992void 4659void
3993ev_prepare_stop (EV_P_ ev_prepare *w) 4660ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3994{ 4661{
3995 clear_pending (EV_A_ (W)w); 4662 clear_pending (EV_A_ (W)w);
3996 if (expect_false (!ev_is_active (w))) 4663 if (expect_false (!ev_is_active (w)))
3997 return; 4664 return;
3998 4665
… …
4011} 4678}
4012#endif 4679#endif
4013 4680
4014#if EV_CHECK_ENABLE 4681#if EV_CHECK_ENABLE
4015void 4682void
4016ev_check_start (EV_P_ ev_check *w) 4683ev_check_start (EV_P_ ev_check *w) EV_THROW
4017{ 4684{
4018 if (expect_false (ev_is_active (w))) 4685 if (expect_false (ev_is_active (w)))
4019 return; 4686 return;
4020 4687
4021 EV_FREQUENT_CHECK; 4688 EV_FREQUENT_CHECK;
… …
4026 4693
4027 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
4028} 4695}
4029 4696
4030void 4697void
4031ev_check_stop (EV_P_ ev_check *w) 4698ev_check_stop (EV_P_ ev_check *w) EV_THROW
4032{ 4699{
4033 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
4034 if (expect_false (!ev_is_active (w))) 4701 if (expect_false (!ev_is_active (w)))
4035 return; 4702 return;
4036 4703
… …
4048 EV_FREQUENT_CHECK; 4715 EV_FREQUENT_CHECK;
4049} 4716}
4050#endif 4717#endif
4051 4718
4052#if EV_EMBED_ENABLE 4719#if EV_EMBED_ENABLE
4053void noinline 4720noinline
4721void
4054ev_embed_sweep (EV_P_ ev_embed *w) 4722ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4055{ 4723{
4056 ev_run (w->other, EVRUN_NOWAIT); 4724 ev_run (w->other, EVRUN_NOWAIT);
4057} 4725}
4058 4726
4059static void 4727static void
… …
4107 ev_idle_stop (EV_A_ idle); 4775 ev_idle_stop (EV_A_ idle);
4108} 4776}
4109#endif 4777#endif
4110 4778
4111void 4779void
4112ev_embed_start (EV_P_ ev_embed *w) 4780ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4113{ 4781{
4114 if (expect_false (ev_is_active (w))) 4782 if (expect_false (ev_is_active (w)))
4115 return; 4783 return;
4116 4784
4117 { 4785 {
… …
4138 4806
4139 EV_FREQUENT_CHECK; 4807 EV_FREQUENT_CHECK;
4140} 4808}
4141 4809
4142void 4810void
4143ev_embed_stop (EV_P_ ev_embed *w) 4811ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4144{ 4812{
4145 clear_pending (EV_A_ (W)w); 4813 clear_pending (EV_A_ (W)w);
4146 if (expect_false (!ev_is_active (w))) 4814 if (expect_false (!ev_is_active (w)))
4147 return; 4815 return;
4148 4816
… …
4158} 4826}
4159#endif 4827#endif
4160 4828
4161#if EV_FORK_ENABLE 4829#if EV_FORK_ENABLE
4162void 4830void
4163ev_fork_start (EV_P_ ev_fork *w) 4831ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4164{ 4832{
4165 if (expect_false (ev_is_active (w))) 4833 if (expect_false (ev_is_active (w)))
4166 return; 4834 return;
4167 4835
4168 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
… …
4173 4841
4174 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
4175} 4843}
4176 4844
4177void 4845void
4178ev_fork_stop (EV_P_ ev_fork *w) 4846ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4179{ 4847{
4180 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
4181 if (expect_false (!ev_is_active (w))) 4849 if (expect_false (!ev_is_active (w)))
4182 return; 4850 return;
4183 4851
… …
4196} 4864}
4197#endif 4865#endif
4198 4866
4199#if EV_CLEANUP_ENABLE 4867#if EV_CLEANUP_ENABLE
4200void 4868void
4201ev_cleanup_start (EV_P_ ev_cleanup *w) 4869ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4202{ 4870{
4203 if (expect_false (ev_is_active (w))) 4871 if (expect_false (ev_is_active (w)))
4204 return; 4872 return;
4205 4873
4206 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
… …
4213 ev_unref (EV_A); 4881 ev_unref (EV_A);
4214 EV_FREQUENT_CHECK; 4882 EV_FREQUENT_CHECK;
4215} 4883}
4216 4884
4217void 4885void
4218ev_cleanup_stop (EV_P_ ev_cleanup *w) 4886ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4219{ 4887{
4220 clear_pending (EV_A_ (W)w); 4888 clear_pending (EV_A_ (W)w);
4221 if (expect_false (!ev_is_active (w))) 4889 if (expect_false (!ev_is_active (w)))
4222 return; 4890 return;
4223 4891
… …
4237} 4905}
4238#endif 4906#endif
4239 4907
4240#if EV_ASYNC_ENABLE 4908#if EV_ASYNC_ENABLE
4241void 4909void
4242ev_async_start (EV_P_ ev_async *w) 4910ev_async_start (EV_P_ ev_async *w) EV_THROW
4243{ 4911{
4244 if (expect_false (ev_is_active (w))) 4912 if (expect_false (ev_is_active (w)))
4245 return; 4913 return;
4246 4914
4247 w->sent = 0; 4915 w->sent = 0;
… …
4256 4924
4257 EV_FREQUENT_CHECK; 4925 EV_FREQUENT_CHECK;
4258} 4926}
4259 4927
4260void 4928void
4261ev_async_stop (EV_P_ ev_async *w) 4929ev_async_stop (EV_P_ ev_async *w) EV_THROW
4262{ 4930{
4263 clear_pending (EV_A_ (W)w); 4931 clear_pending (EV_A_ (W)w);
4264 if (expect_false (!ev_is_active (w))) 4932 if (expect_false (!ev_is_active (w)))
4265 return; 4933 return;
4266 4934
… …
4277 4945
4278 EV_FREQUENT_CHECK; 4946 EV_FREQUENT_CHECK;
4279} 4947}
4280 4948
4281void 4949void
4282ev_async_send (EV_P_ ev_async *w) 4950ev_async_send (EV_P_ ev_async *w) EV_THROW
4283{ 4951{
4284 w->sent = 1; 4952 w->sent = 1;
4285 evpipe_write (EV_A_ &async_pending); 4953 evpipe_write (EV_A_ &async_pending);
4286} 4954}
4287#endif 4955#endif
… …
4324 4992
4325 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4993 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4326} 4994}
4327 4995
4328void 4996void
4329ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4997ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4330{ 4998{
4331 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4999 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4332 5000
4333 if (expect_false (!once)) 5001 if (expect_false (!once))
4334 { 5002 {
… …
4355} 5023}
4356 5024
4357/*****************************************************************************/ 5025/*****************************************************************************/
4358 5026
4359#if EV_WALK_ENABLE 5027#if EV_WALK_ENABLE
4360void ecb_cold 5028ecb_cold
5029void
4361ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5030ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4362{ 5031{
4363 int i, j; 5032 int i, j;
4364 ev_watcher_list *wl, *wn; 5033 ev_watcher_list *wl, *wn;
4365 5034
4366 if (types & (EV_IO | EV_EMBED)) 5035 if (types & (EV_IO | EV_EMBED))

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