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Comparing libev/ev.c (file contents):
Revision 1.391 by root, Thu Aug 4 13:57:16 2011 UTC vs.
Revision 1.481 by root, Thu Jun 1 20:25:50 2017 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
… …
183# include EV_H 183# include EV_H
184#else 184#else
185# include "ev.h" 185# include "ev.h"
186#endif 186#endif
187 187
188EV_CPP(extern "C" {) 188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
197#endif
189 198
190#ifndef _WIN32 199#ifndef _WIN32
191# include <sys/time.h> 200# include <sys/time.h>
192# include <sys/wait.h> 201# include <sys/wait.h>
193# include <unistd.h> 202# include <unistd.h>
194#else 203#else
195# include <io.h> 204# include <io.h>
196# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
197# include <windows.h> 207# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
200# endif 210# endif
201# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
210#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
211 221
212/* 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 */
213 223
214/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 225#if defined EV_NSIG
216/* use what's provided */ 226/* use what's provided */
217#elif defined (NSIG) 227#elif defined NSIG
218# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 229#elif defined _NSIG
220# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 231#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 233#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 237#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 239#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 243#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 245#else
236# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 247#endif
241 248
242#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
244#endif 251#endif
245 252
246#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 256# else
250# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
251# endif 258# endif
252#endif 259#endif
253 260
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
254#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 273# else
258# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
259# endif 275# endif
260#endif 276#endif
… …
347 363
348#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 366#endif
351 367
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
352/* 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, */
353/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 387# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
360# else 392# else
… …
363# endif 395# endif
364#endif 396#endif
365 397
366/* 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 */
367 399
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
377#endif 403#endif
378 404
… …
386# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
387#endif 413#endif
388 414
389#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
390/* 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 */
391# if !defined(_WIN32) && !defined(__hpux) 417# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 418# include <sys/select.h>
393# endif 419# endif
394#endif 420#endif
395 421
396#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
… …
399/* 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 */
400# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
403# endif 429# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 430#endif
409 431
410#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
411/* 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 */
412# include <stdint.h> 434# include <stdint.h>
… …
469/* 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 */
470/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
471/* 493/*
472 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
473 * 495 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 498 * All rights reserved.
477 * 499 *
478 * 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-
479 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
… …
493 * 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;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * 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
497 * 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.
498 */ 531 */
499 532
500#ifndef ECB_H 533#ifndef ECB_H
501#define ECB_H 534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
502 538
503#ifdef _WIN32 539#ifdef _WIN32
504 typedef signed char int8_t; 540 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 542 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 548 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 549 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 550 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 551 typedef unsigned __int64 uint64_t;
516 #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
517#else 562#else
518 #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
519#endif 581#endif
520 582
521/* many compilers define _GNUC_ to some versions but then only implement 583/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 584 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 585 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 586 * or so.
525 * 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
526 * 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.
527 */ 589 */
528#ifndef ECB_GCC_VERSION
529 #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__
530 #define ECB_GCC_VERSION(major,minor) 0 591 #define ECB_GCC_VERSION(major,minor) 0
531 #else 592#else
532 #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)))
533 #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
534#endif 632#endif
535 633
536/*****************************************************************************/ 634/*****************************************************************************/
537 635
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* 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 */
540 638
541#if ECB_NO_THREADS || ECB_NO_SMP 639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 644 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) 645#endif
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) 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 */
545#endif 654#endif
546 655
547#ifndef ECB_MEMORY_FENCE 656#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 658 #if __i386 || __i386__
550 #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")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
553 #elif __amd64 662 #elif ECB_GCC_AMD64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
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 */
675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
688 #elif defined __s390__ || defined __s390x__
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")
557 #endif 707 #endif
558 #endif 708 #endif
559#endif 709#endif
560 710
561#ifndef ECB_MEMORY_FENCE 711#ifndef ECB_MEMORY_FENCE
562 #if ECB_GCC_VERSION(4,4) 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
724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
563 #define ECB_MEMORY_FENCE __sync_synchronize () 725 #define ECB_MEMORY_FENCE __sync_synchronize ()
564 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) 726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
565 #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()
566 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
567 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
568 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
569 #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 */
570 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
571 #elif defined(_WIN32) 737 #elif defined _WIN32
572 #include <WinNT.h> 738 #include <WinNT.h>
573 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
574 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
575 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 741 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
744 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
745 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync ()
576 #endif 747 #endif
577#endif 748#endif
578 749
579#ifndef ECB_MEMORY_FENCE 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)
764 #endif
765#endif
766
767#ifndef ECB_MEMORY_FENCE
768 #if !ECB_AVOID_PTHREADS
580 /* 769 /*
581 * if you get undefined symbol references to pthread_mutex_lock, 770 * if you get undefined symbol references to pthread_mutex_lock,
582 * or failure to find pthread.h, then you should implement 771 * or failure to find pthread.h, then you should implement
583 * the ECB_MEMORY_FENCE operations for your cpu/compiler 772 * the ECB_MEMORY_FENCE operations for your cpu/compiler
584 * OR provide pthread.h and link against the posix thread library 773 * OR provide pthread.h and link against the posix thread library
585 * of your system. 774 * of your system.
586 */ 775 */
587 #include <pthread.h> 776 #include <pthread.h>
588 #define ECB_NEEDS_PTHREADS 1 777 #define ECB_NEEDS_PTHREADS 1
589 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 778 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
590 779
591 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 780 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
592 #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)
782 #endif
783#endif
784
785#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
593 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
787#endif
788
789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
594 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
595#endif 791#endif
596 792
597/*****************************************************************************/ 793/*****************************************************************************/
598 794
599#define ECB_C99 (__STDC_VERSION__ >= 199901L) 795#if ECB_CPP
600
601#if __cplusplus
602 #define ecb_inline static inline 796 #define ecb_inline static inline
603#elif ECB_GCC_VERSION(2,5) 797#elif ECB_GCC_VERSION(2,5)
604 #define ecb_inline static __inline__ 798 #define ecb_inline static __inline__
605#elif ECB_C99 799#elif ECB_C99
606 #define ecb_inline static inline 800 #define ecb_inline static inline
… …
620 814
621#define ECB_CONCAT_(a, b) a ## b 815#define ECB_CONCAT_(a, b) a ## b
622#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
623#define ECB_STRINGIFY_(a) # a 817#define ECB_STRINGIFY_(a) # a
624#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))
625 820
626#define ecb_function_ ecb_inline 821#define ecb_function_ ecb_inline
627 822
628#if ECB_GCC_VERSION(3,1) 823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
629 #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)
630 #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)
631 #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)
632 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
633#else 847#else
634 #define ecb_attribute(attrlist)
635 #define ecb_is_constant(expr) 0
636 #define ecb_expect(expr,value) (expr)
637 #define ecb_prefetch(addr,rw,locality) 848 #define ecb_prefetch(addr,rw,locality)
638#endif 849#endif
639 850
640/* no emulation for ecb_decltype */ 851/* no emulation for ecb_decltype */
641#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; };
642 #define ecb_decltype(x) __decltype(x) 855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
643#elif ECB_GCC_VERSION(3,0) 856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
644 #define ecb_decltype(x) __typeof(x) 857 #define ecb_decltype(x) __typeof__ (x)
645#endif 858#endif
646 859
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
647#define ecb_noinline ecb_attribute ((__noinline__)) 877 #define ecb_noinline ecb_attribute ((__noinline__))
648#define ecb_noreturn ecb_attribute ((__noreturn__)) 878#endif
879
649#define ecb_unused ecb_attribute ((__unused__)) 880#define ecb_unused ecb_attribute ((__unused__))
650#define ecb_const ecb_attribute ((__const__)) 881#define ecb_const ecb_attribute ((__const__))
651#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
652 895
653#if ECB_GCC_VERSION(4,3) 896#if ECB_GCC_VERSION(4,3)
654 #define ecb_artificial ecb_attribute ((__artificial__)) 897 #define ecb_artificial ecb_attribute ((__artificial__))
655 #define ecb_hot ecb_attribute ((__hot__)) 898 #define ecb_hot ecb_attribute ((__hot__))
656 #define ecb_cold ecb_attribute ((__cold__)) 899 #define ecb_cold ecb_attribute ((__cold__))
… …
668/* for compatibility to the rest of the world */ 911/* for compatibility to the rest of the world */
669#define ecb_likely(expr) ecb_expect_true (expr) 912#define ecb_likely(expr) ecb_expect_true (expr)
670#define ecb_unlikely(expr) ecb_expect_false (expr) 913#define ecb_unlikely(expr) ecb_expect_false (expr)
671 914
672/* count trailing zero bits and count # of one bits */ 915/* count trailing zero bits and count # of one bits */
673#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))
674 /* 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 */
675 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
676 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
677 #define ecb_ctz32(x) __builtin_ctz (x) 923 #define ecb_ctz32(x) __builtin_ctz (x)
678 #define ecb_ctz64(x) __builtin_ctzll (x) 924 #define ecb_ctz64(x) __builtin_ctzll (x)
679 #define ecb_popcount32(x) __builtin_popcount (x) 925 #define ecb_popcount32(x) __builtin_popcount (x)
680 /* no popcountll */ 926 /* no popcountll */
681#else 927#else
682 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
683 ecb_function_ int 929 ecb_function_ ecb_const int
684 ecb_ctz32 (uint32_t x) 930 ecb_ctz32 (uint32_t x)
685 { 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
686 int r = 0; 937 int r = 0;
687 938
688 x &= ~x + 1; /* this isolates the lowest bit */ 939 x &= ~x + 1; /* this isolates the lowest bit */
689 940
690#if ECB_branchless_on_i386 941#if ECB_branchless_on_i386
… …
700 if (x & 0xff00ff00) r += 8; 951 if (x & 0xff00ff00) r += 8;
701 if (x & 0xffff0000) r += 16; 952 if (x & 0xffff0000) r += 16;
702#endif 953#endif
703 954
704 return r; 955 return r;
956#endif
705 } 957 }
706 958
707 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
708 ecb_function_ int 960 ecb_function_ ecb_const int
709 ecb_ctz64 (uint64_t x) 961 ecb_ctz64 (uint64_t x)
710 { 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
711 int shift = x & 0xffffffffU ? 0 : 32; 968 int shift = x & 0xffffffff ? 0 : 32;
712 return ecb_ctz32 (x >> shift) + shift; 969 return ecb_ctz32 (x >> shift) + shift;
970#endif
713 } 971 }
714 972
715 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
716 ecb_function_ int 974 ecb_function_ ecb_const int
717 ecb_popcount32 (uint32_t x) 975 ecb_popcount32 (uint32_t x)
718 { 976 {
719 x -= (x >> 1) & 0x55555555; 977 x -= (x >> 1) & 0x55555555;
720 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
721 x = ((x >> 4) + x) & 0x0f0f0f0f; 979 x = ((x >> 4) + x) & 0x0f0f0f0f;
722 x *= 0x01010101; 980 x *= 0x01010101;
723 981
724 return x >> 24; 982 return x >> 24;
725 } 983 }
726 984
727 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
728 ecb_function_ int ecb_ld32 (uint32_t x) 986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
729 { 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
730 int r = 0; 993 int r = 0;
731 994
732 if (x >> 16) { x >>= 16; r += 16; } 995 if (x >> 16) { x >>= 16; r += 16; }
733 if (x >> 8) { x >>= 8; r += 8; } 996 if (x >> 8) { x >>= 8; r += 8; }
734 if (x >> 4) { x >>= 4; r += 4; } 997 if (x >> 4) { x >>= 4; r += 4; }
735 if (x >> 2) { x >>= 2; r += 2; } 998 if (x >> 2) { x >>= 2; r += 2; }
736 if (x >> 1) { r += 1; } 999 if (x >> 1) { r += 1; }
737 1000
738 return r; 1001 return r;
1002#endif
739 } 1003 }
740 1004
741 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
742 ecb_function_ int ecb_ld64 (uint64_t x) 1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
743 { 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
744 int r = 0; 1013 int r = 0;
745 1014
746 if (x >> 32) { x >>= 32; r += 32; } 1015 if (x >> 32) { x >>= 32; r += 32; }
747 1016
748 return r + ecb_ld32 (x); 1017 return r + ecb_ld32 (x);
1018#endif
749 } 1019 }
750#endif 1020#endif
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
1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1029{
1030 return ( (x * 0x0802U & 0x22110U)
1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1032}
1033
1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1036{
1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1040 x = ( x >> 8 ) | ( x << 8);
1041
1042 return x;
1043}
1044
1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1047{
1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1052 x = ( x >> 16 ) | ( x << 16);
1053
1054 return x;
1055}
751 1056
752/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
753/* so for this version we are lazy */ 1058/* so for this version we are lazy */
754ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
755ecb_function_ int 1060ecb_function_ ecb_const int
756ecb_popcount64 (uint64_t x) 1061ecb_popcount64 (uint64_t x)
757{ 1062{
758 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
759} 1064}
760 1065
761ecb_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);
762ecb_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);
763ecb_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);
764ecb_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);
765ecb_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);
766ecb_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);
767ecb_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);
768ecb_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);
769 1074
770ecb_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); }
771ecb_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); }
772ecb_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); }
773ecb_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); }
774ecb_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); }
775ecb_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); }
776ecb_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); }
777ecb_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); }
778 1083
779#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
780 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
781 #define ecb_bswap32(x) __builtin_bswap32 (x) 1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
782 #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)))
783#else 1097#else
784 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
785 ecb_function_ uint16_t 1099 ecb_function_ ecb_const uint16_t
786 ecb_bswap16 (uint16_t x) 1100 ecb_bswap16 (uint16_t x)
787 { 1101 {
788 return ecb_rotl16 (x, 8); 1102 return ecb_rotl16 (x, 8);
789 } 1103 }
790 1104
791 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
792 ecb_function_ uint32_t 1106 ecb_function_ ecb_const uint32_t
793 ecb_bswap32 (uint32_t x) 1107 ecb_bswap32 (uint32_t x)
794 { 1108 {
795 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
796 } 1110 }
797 1111
798 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
799 ecb_function_ uint64_t 1113 ecb_function_ ecb_const uint64_t
800 ecb_bswap64 (uint64_t x) 1114 ecb_bswap64 (uint64_t x)
801 { 1115 {
802 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
803 } 1117 }
804#endif 1118#endif
805 1119
806#if ECB_GCC_VERSION(4,5) 1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
807 #define ecb_unreachable() __builtin_unreachable () 1121 #define ecb_unreachable() __builtin_unreachable ()
808#else 1122#else
809 /* 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 :/ */
810 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
811 ecb_function_ void ecb_unreachable (void) { } 1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
812#endif 1126#endif
813 1127
814/* try to tell the compiler that some condition is definitely true */ 1128/* try to tell the compiler that some condition is definitely true */
815#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
816 1130
817ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
818ecb_function_ unsigned char 1132ecb_inline ecb_const uint32_t
819ecb_byteorder_helper (void) 1133ecb_byteorder_helper (void)
820{ 1134{
821 const uint32_t u = 0x11223344; 1135 /* the union code still generates code under pressure in gcc, */
822 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
823} 1157}
824 1158
825ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
826ecb_function_ 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; }
827ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
828ecb_function_ 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; }
829 1163
830#if ECB_GCC_VERSION(3,0) || ECB_C99 1164#if ECB_GCC_VERSION(3,0) || ECB_C99
831 #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))
832#else 1166#else
833 #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)))
1168#endif
1169
1170#if ECB_CPP
1171 template<typename T>
1172 static inline T ecb_div_rd (T val, T div)
1173 {
1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1175 }
1176 template<typename T>
1177 static inline T ecb_div_ru (T val, T div)
1178 {
1179 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1180 }
1181#else
1182 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1183 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
834#endif 1184#endif
835 1185
836#if ecb_cplusplus_does_not_suck 1186#if ecb_cplusplus_does_not_suck
837 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1187 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
838 template<typename T, int N> 1188 template<typename T, int N>
… …
842 } 1192 }
843#else 1193#else
844 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
845#endif 1195#endif
846 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
847#endif 1502#endif
848 1503
849/* ECB.H END */ 1504/* ECB.H END */
1505
1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1507/* if your architecture doesn't need memory fences, e.g. because it is
1508 * single-cpu/core, or if you use libev in a project that doesn't use libev
1509 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1510 * libev, in which cases the memory fences become nops.
1511 * alternatively, you can remove this #error and link against libpthread,
1512 * which will then provide the memory fences.
1513 */
1514# error "memory fences not defined for your architecture, please report"
1515#endif
1516
1517#ifndef ECB_MEMORY_FENCE
1518# define ECB_MEMORY_FENCE do { } while (0)
1519# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1521#endif
850 1522
851#define expect_false(cond) ecb_expect_false (cond) 1523#define expect_false(cond) ecb_expect_false (cond)
852#define expect_true(cond) ecb_expect_true (cond) 1524#define expect_true(cond) ecb_expect_true (cond)
853#define noinline ecb_noinline 1525#define noinline ecb_noinline
854 1526
855#define inline_size ecb_inline 1527#define inline_size ecb_inline
856 1528
857#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
858# define inline_speed ecb_inline 1530# define inline_speed ecb_inline
859#else 1531#else
860# define inline_speed static noinline 1532# define inline_speed noinline static
861#endif 1533#endif
862 1534
863#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
864 1536
865#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
912#else 1584#else
913 1585
914#include <float.h> 1586#include <float.h>
915 1587
916/* a floor() replacement function, should be independent of ev_tstamp type */ 1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
917static ev_tstamp noinline 1590static ev_tstamp
918ev_floor (ev_tstamp v) 1591ev_floor (ev_tstamp v)
919{ 1592{
920 /* the choice of shift factor is not terribly important */ 1593 /* the choice of shift factor is not terribly important */
921#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
922 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
954 1627
955#ifdef __linux 1628#ifdef __linux
956# include <sys/utsname.h> 1629# include <sys/utsname.h>
957#endif 1630#endif
958 1631
959static unsigned int noinline ecb_cold 1632noinline ecb_cold
1633static unsigned int
960ev_linux_version (void) 1634ev_linux_version (void)
961{ 1635{
962#ifdef __linux 1636#ifdef __linux
963 unsigned int v = 0; 1637 unsigned int v = 0;
964 struct utsname buf; 1638 struct utsname buf;
… …
993} 1667}
994 1668
995/*****************************************************************************/ 1669/*****************************************************************************/
996 1670
997#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
998static void noinline ecb_cold 1672noinline ecb_cold
1673static void
999ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
1000{ 1675{
1001 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
1002} 1677}
1003#endif 1678#endif
1004 1679
1005static void (*syserr_cb)(const char *msg); 1680static void (*syserr_cb)(const char *msg) EV_THROW;
1006 1681
1007void ecb_cold 1682ecb_cold
1683void
1008ev_set_syserr_cb (void (*cb)(const char *msg)) 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1009{ 1685{
1010 syserr_cb = cb; 1686 syserr_cb = cb;
1011} 1687}
1012 1688
1013static void noinline ecb_cold 1689noinline ecb_cold
1690static void
1014ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
1015{ 1692{
1016 if (!msg) 1693 if (!msg)
1017 msg = "(libev) system error"; 1694 msg = "(libev) system error";
1018 1695
… …
1031 abort (); 1708 abort ();
1032 } 1709 }
1033} 1710}
1034 1711
1035static void * 1712static void *
1036ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
1037{ 1714{
1038#if __GLIBC__
1039 return realloc (ptr, size);
1040#else
1041 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
1042 * 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
1043 * 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.
1044 */ 1720 */
1045 1721
1046 if (size) 1722 if (size)
1047 return realloc (ptr, size); 1723 return realloc (ptr, size);
1048 1724
1049 free (ptr); 1725 free (ptr);
1050 return 0; 1726 return 0;
1051#endif
1052} 1727}
1053 1728
1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1055 1730
1056void ecb_cold 1731ecb_cold
1732void
1057ev_set_allocator (void *(*cb)(void *ptr, long size)) 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1058{ 1734{
1059 alloc = cb; 1735 alloc = cb;
1060} 1736}
1061 1737
1062inline_speed void * 1738inline_speed void *
… …
1150 #undef VAR 1826 #undef VAR
1151 }; 1827 };
1152 #include "ev_wrap.h" 1828 #include "ev_wrap.h"
1153 1829
1154 static struct ev_loop default_loop_struct; 1830 static struct ev_loop default_loop_struct;
1155 struct ev_loop *ev_default_loop_ptr; 1831 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1156 1832
1157#else 1833#else
1158 1834
1159 ev_tstamp ev_rt_now; 1835 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1160 #define VAR(name,decl) static decl; 1836 #define VAR(name,decl) static decl;
1161 #include "ev_vars.h" 1837 #include "ev_vars.h"
1162 #undef VAR 1838 #undef VAR
1163 1839
1164 static int ev_default_loop_ptr; 1840 static int ev_default_loop_ptr;
… …
1179 1855
1180/*****************************************************************************/ 1856/*****************************************************************************/
1181 1857
1182#ifndef EV_HAVE_EV_TIME 1858#ifndef EV_HAVE_EV_TIME
1183ev_tstamp 1859ev_tstamp
1184ev_time (void) 1860ev_time (void) EV_THROW
1185{ 1861{
1186#if EV_USE_REALTIME 1862#if EV_USE_REALTIME
1187 if (expect_true (have_realtime)) 1863 if (expect_true (have_realtime))
1188 { 1864 {
1189 struct timespec ts; 1865 struct timespec ts;
… …
1213 return ev_time (); 1889 return ev_time ();
1214} 1890}
1215 1891
1216#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
1217ev_tstamp 1893ev_tstamp
1218ev_now (EV_P) 1894ev_now (EV_P) EV_THROW
1219{ 1895{
1220 return ev_rt_now; 1896 return ev_rt_now;
1221} 1897}
1222#endif 1898#endif
1223 1899
1224void 1900void
1225ev_sleep (ev_tstamp delay) 1901ev_sleep (ev_tstamp delay) EV_THROW
1226{ 1902{
1227 if (delay > 0.) 1903 if (delay > 0.)
1228 { 1904 {
1229#if EV_USE_NANOSLEEP 1905#if EV_USE_NANOSLEEP
1230 struct timespec ts; 1906 struct timespec ts;
1231 1907
1232 EV_TS_SET (ts, delay); 1908 EV_TS_SET (ts, delay);
1233 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
1234#elif defined(_WIN32) 1910#elif defined _WIN32
1235 Sleep ((unsigned long)(delay * 1e3)); 1911 Sleep ((unsigned long)(delay * 1e3));
1236#else 1912#else
1237 struct timeval tv; 1913 struct timeval tv;
1238 1914
1239 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1915 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1258 1934
1259 do 1935 do
1260 ncur <<= 1; 1936 ncur <<= 1;
1261 while (cnt > ncur); 1937 while (cnt > ncur);
1262 1938
1263 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1939 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1264 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1940 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1265 { 1941 {
1266 ncur *= elem; 1942 ncur *= elem;
1267 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1943 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1268 ncur = ncur - sizeof (void *) * 4; 1944 ncur = ncur - sizeof (void *) * 4;
… …
1270 } 1946 }
1271 1947
1272 return ncur; 1948 return ncur;
1273} 1949}
1274 1950
1275static void * noinline ecb_cold 1951noinline ecb_cold
1952static void *
1276array_realloc (int elem, void *base, int *cur, int cnt) 1953array_realloc (int elem, void *base, int *cur, int cnt)
1277{ 1954{
1278 *cur = array_nextsize (elem, *cur, cnt); 1955 *cur = array_nextsize (elem, *cur, cnt);
1279 return ev_realloc (base, elem * *cur); 1956 return ev_realloc (base, elem * *cur);
1280} 1957}
… …
1283 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1960 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1284 1961
1285#define array_needsize(type,base,cur,cnt,init) \ 1962#define array_needsize(type,base,cur,cnt,init) \
1286 if (expect_false ((cnt) > (cur))) \ 1963 if (expect_false ((cnt) > (cur))) \
1287 { \ 1964 { \
1288 int ecb_unused ocur_ = (cur); \ 1965 ecb_unused int ocur_ = (cur); \
1289 (base) = (type *)array_realloc \ 1966 (base) = (type *)array_realloc \
1290 (sizeof (type), (base), &(cur), (cnt)); \ 1967 (sizeof (type), (base), &(cur), (cnt)); \
1291 init ((base) + (ocur_), (cur) - ocur_); \ 1968 init ((base) + (ocur_), (cur) - ocur_); \
1292 } 1969 }
1293 1970
… …
1305 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1982 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1306 1983
1307/*****************************************************************************/ 1984/*****************************************************************************/
1308 1985
1309/* dummy callback for pending events */ 1986/* dummy callback for pending events */
1310static void noinline 1987noinline
1988static void
1311pendingcb (EV_P_ ev_prepare *w, int revents) 1989pendingcb (EV_P_ ev_prepare *w, int revents)
1312{ 1990{
1313} 1991}
1314 1992
1315void noinline 1993noinline
1994void
1316ev_feed_event (EV_P_ void *w, int revents) 1995ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1317{ 1996{
1318 W w_ = (W)w; 1997 W w_ = (W)w;
1319 int pri = ABSPRI (w_); 1998 int pri = ABSPRI (w_);
1320 1999
1321 if (expect_false (w_->pending)) 2000 if (expect_false (w_->pending))
… …
1325 w_->pending = ++pendingcnt [pri]; 2004 w_->pending = ++pendingcnt [pri];
1326 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2005 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1327 pendings [pri][w_->pending - 1].w = w_; 2006 pendings [pri][w_->pending - 1].w = w_;
1328 pendings [pri][w_->pending - 1].events = revents; 2007 pendings [pri][w_->pending - 1].events = revents;
1329 } 2008 }
2009
2010 pendingpri = NUMPRI - 1;
1330} 2011}
1331 2012
1332inline_speed void 2013inline_speed void
1333feed_reverse (EV_P_ W w) 2014feed_reverse (EV_P_ W w)
1334{ 2015{
… …
1380 if (expect_true (!anfd->reify)) 2061 if (expect_true (!anfd->reify))
1381 fd_event_nocheck (EV_A_ fd, revents); 2062 fd_event_nocheck (EV_A_ fd, revents);
1382} 2063}
1383 2064
1384void 2065void
1385ev_feed_fd_event (EV_P_ int fd, int revents) 2066ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1386{ 2067{
1387 if (fd >= 0 && fd < anfdmax) 2068 if (fd >= 0 && fd < anfdmax)
1388 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
1389} 2070}
1390 2071
… …
1448 2129
1449 fdchangecnt = 0; 2130 fdchangecnt = 0;
1450} 2131}
1451 2132
1452/* something about the given fd changed */ 2133/* something about the given fd changed */
1453inline_size void 2134inline_size
2135void
1454fd_change (EV_P_ int fd, int flags) 2136fd_change (EV_P_ int fd, int flags)
1455{ 2137{
1456 unsigned char reify = anfds [fd].reify; 2138 unsigned char reify = anfds [fd].reify;
1457 anfds [fd].reify |= flags; 2139 anfds [fd].reify |= flags;
1458 2140
… …
1463 fdchanges [fdchangecnt - 1] = fd; 2145 fdchanges [fdchangecnt - 1] = fd;
1464 } 2146 }
1465} 2147}
1466 2148
1467/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2149/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1468inline_speed void ecb_cold 2150inline_speed ecb_cold void
1469fd_kill (EV_P_ int fd) 2151fd_kill (EV_P_ int fd)
1470{ 2152{
1471 ev_io *w; 2153 ev_io *w;
1472 2154
1473 while ((w = (ev_io *)anfds [fd].head)) 2155 while ((w = (ev_io *)anfds [fd].head))
… …
1476 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2158 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1477 } 2159 }
1478} 2160}
1479 2161
1480/* check whether the given fd is actually valid, for error recovery */ 2162/* check whether the given fd is actually valid, for error recovery */
1481inline_size int ecb_cold 2163inline_size ecb_cold int
1482fd_valid (int fd) 2164fd_valid (int fd)
1483{ 2165{
1484#ifdef _WIN32 2166#ifdef _WIN32
1485 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2167 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1486#else 2168#else
1487 return fcntl (fd, F_GETFD) != -1; 2169 return fcntl (fd, F_GETFD) != -1;
1488#endif 2170#endif
1489} 2171}
1490 2172
1491/* called on EBADF to verify fds */ 2173/* called on EBADF to verify fds */
1492static void noinline ecb_cold 2174noinline ecb_cold
2175static void
1493fd_ebadf (EV_P) 2176fd_ebadf (EV_P)
1494{ 2177{
1495 int fd; 2178 int fd;
1496 2179
1497 for (fd = 0; fd < anfdmax; ++fd) 2180 for (fd = 0; fd < anfdmax; ++fd)
… …
1499 if (!fd_valid (fd) && errno == EBADF) 2182 if (!fd_valid (fd) && errno == EBADF)
1500 fd_kill (EV_A_ fd); 2183 fd_kill (EV_A_ fd);
1501} 2184}
1502 2185
1503/* called on ENOMEM in select/poll to kill some fds and retry */ 2186/* called on ENOMEM in select/poll to kill some fds and retry */
1504static void noinline ecb_cold 2187noinline ecb_cold
2188static void
1505fd_enomem (EV_P) 2189fd_enomem (EV_P)
1506{ 2190{
1507 int fd; 2191 int fd;
1508 2192
1509 for (fd = anfdmax; fd--; ) 2193 for (fd = anfdmax; fd--; )
… …
1513 break; 2197 break;
1514 } 2198 }
1515} 2199}
1516 2200
1517/* usually called after fork if backend needs to re-arm all fds from scratch */ 2201/* usually called after fork if backend needs to re-arm all fds from scratch */
1518static void noinline 2202noinline
2203static void
1519fd_rearm_all (EV_P) 2204fd_rearm_all (EV_P)
1520{ 2205{
1521 int fd; 2206 int fd;
1522 2207
1523 for (fd = 0; fd < anfdmax; ++fd) 2208 for (fd = 0; fd < anfdmax; ++fd)
… …
1704 2389
1705/*****************************************************************************/ 2390/*****************************************************************************/
1706 2391
1707#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2392#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1708 2393
1709static void noinline ecb_cold 2394noinline ecb_cold
2395static void
1710evpipe_init (EV_P) 2396evpipe_init (EV_P)
1711{ 2397{
1712 if (!ev_is_active (&pipe_w)) 2398 if (!ev_is_active (&pipe_w))
1713 { 2399 {
2400 int fds [2];
2401
1714# if EV_USE_EVENTFD 2402# if EV_USE_EVENTFD
2403 fds [0] = -1;
1715 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2404 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1716 if (evfd < 0 && errno == EINVAL) 2405 if (fds [1] < 0 && errno == EINVAL)
1717 evfd = eventfd (0, 0); 2406 fds [1] = eventfd (0, 0);
1718 2407
1719 if (evfd >= 0) 2408 if (fds [1] < 0)
2409# endif
1720 { 2410 {
2411 while (pipe (fds))
2412 ev_syserr ("(libev) error creating signal/async pipe");
2413
2414 fd_intern (fds [0]);
2415 }
2416
1721 evpipe [0] = -1; 2417 evpipe [0] = fds [0];
1722 fd_intern (evfd); /* doing it twice doesn't hurt */ 2418
1723 ev_io_set (&pipe_w, evfd, EV_READ); 2419 if (evpipe [1] < 0)
2420 evpipe [1] = fds [1]; /* first call, set write fd */
2421 else
2422 {
2423 /* on subsequent calls, do not change evpipe [1] */
2424 /* so that evpipe_write can always rely on its value. */
2425 /* this branch does not do anything sensible on windows, */
2426 /* so must not be executed on windows */
2427
2428 dup2 (fds [1], evpipe [1]);
2429 close (fds [1]);
2430 }
2431
2432 fd_intern (evpipe [1]);
2433
2434 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2435 ev_io_start (EV_A_ &pipe_w);
2436 ev_unref (EV_A); /* watcher should not keep loop alive */
2437 }
2438}
2439
2440inline_speed void
2441evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2442{
2443 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2444
2445 if (expect_true (*flag))
2446 return;
2447
2448 *flag = 1;
2449 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2450
2451 pipe_write_skipped = 1;
2452
2453 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2454
2455 if (pipe_write_wanted)
2456 {
2457 int old_errno;
2458
2459 pipe_write_skipped = 0;
2460 ECB_MEMORY_FENCE_RELEASE;
2461
2462 old_errno = errno; /* save errno because write will clobber it */
2463
2464#if EV_USE_EVENTFD
2465 if (evpipe [0] < 0)
2466 {
2467 uint64_t counter = 1;
2468 write (evpipe [1], &counter, sizeof (uint64_t));
1724 } 2469 }
1725 else 2470 else
1726# endif 2471#endif
1727 { 2472 {
1728 while (pipe (evpipe)) 2473#ifdef _WIN32
1729 ev_syserr ("(libev) error creating signal/async pipe"); 2474 WSABUF buf;
1730 2475 DWORD sent;
1731 fd_intern (evpipe [0]); 2476 buf.buf = &buf;
1732 fd_intern (evpipe [1]); 2477 buf.len = 1;
1733 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2478 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1734 } 2479#else
1735
1736 ev_io_start (EV_A_ &pipe_w);
1737 ev_unref (EV_A); /* watcher should not keep loop alive */
1738 }
1739}
1740
1741inline_speed void
1742evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1743{
1744 if (expect_true (*flag))
1745 return;
1746
1747 *flag = 1;
1748
1749 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1750
1751 pipe_write_skipped = 1;
1752
1753 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1754
1755 if (pipe_write_wanted)
1756 {
1757 int old_errno;
1758
1759 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1760
1761 old_errno = errno; /* save errno because write will clobber it */
1762
1763#if EV_USE_EVENTFD
1764 if (evfd >= 0)
1765 {
1766 uint64_t counter = 1;
1767 write (evfd, &counter, sizeof (uint64_t));
1768 }
1769 else
1770#endif
1771 {
1772 /* win32 people keep sending patches that change this write() to send() */
1773 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1774 /* so when you think this write should be a send instead, please find out */
1775 /* where your send() is from - it's definitely not the microsoft send, and */
1776 /* tell me. thank you. */
1777 write (evpipe [1], &(evpipe [1]), 1); 2480 write (evpipe [1], &(evpipe [1]), 1);
2481#endif
1778 } 2482 }
1779 2483
1780 errno = old_errno; 2484 errno = old_errno;
1781 } 2485 }
1782} 2486}
… …
1789 int i; 2493 int i;
1790 2494
1791 if (revents & EV_READ) 2495 if (revents & EV_READ)
1792 { 2496 {
1793#if EV_USE_EVENTFD 2497#if EV_USE_EVENTFD
1794 if (evfd >= 0) 2498 if (evpipe [0] < 0)
1795 { 2499 {
1796 uint64_t counter; 2500 uint64_t counter;
1797 read (evfd, &counter, sizeof (uint64_t)); 2501 read (evpipe [1], &counter, sizeof (uint64_t));
1798 } 2502 }
1799 else 2503 else
1800#endif 2504#endif
1801 { 2505 {
1802 char dummy; 2506 char dummy[4];
1803 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2507#ifdef _WIN32
2508 WSABUF buf;
2509 DWORD recvd;
2510 DWORD flags = 0;
2511 buf.buf = dummy;
2512 buf.len = sizeof (dummy);
2513 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2514#else
1804 read (evpipe [0], &dummy, 1); 2515 read (evpipe [0], &dummy, sizeof (dummy));
2516#endif
1805 } 2517 }
1806 } 2518 }
1807 2519
1808 pipe_write_skipped = 0; 2520 pipe_write_skipped = 0;
2521
2522 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1809 2523
1810#if EV_SIGNAL_ENABLE 2524#if EV_SIGNAL_ENABLE
1811 if (sig_pending) 2525 if (sig_pending)
1812 { 2526 {
1813 sig_pending = 0; 2527 sig_pending = 0;
2528
2529 ECB_MEMORY_FENCE;
1814 2530
1815 for (i = EV_NSIG - 1; i--; ) 2531 for (i = EV_NSIG - 1; i--; )
1816 if (expect_false (signals [i].pending)) 2532 if (expect_false (signals [i].pending))
1817 ev_feed_signal_event (EV_A_ i + 1); 2533 ev_feed_signal_event (EV_A_ i + 1);
1818 } 2534 }
… …
1820 2536
1821#if EV_ASYNC_ENABLE 2537#if EV_ASYNC_ENABLE
1822 if (async_pending) 2538 if (async_pending)
1823 { 2539 {
1824 async_pending = 0; 2540 async_pending = 0;
2541
2542 ECB_MEMORY_FENCE;
1825 2543
1826 for (i = asynccnt; i--; ) 2544 for (i = asynccnt; i--; )
1827 if (asyncs [i]->sent) 2545 if (asyncs [i]->sent)
1828 { 2546 {
1829 asyncs [i]->sent = 0; 2547 asyncs [i]->sent = 0;
2548 ECB_MEMORY_FENCE_RELEASE;
1830 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2549 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1831 } 2550 }
1832 } 2551 }
1833#endif 2552#endif
1834} 2553}
1835 2554
1836/*****************************************************************************/ 2555/*****************************************************************************/
1837 2556
1838void 2557void
1839ev_feed_signal (int signum) 2558ev_feed_signal (int signum) EV_THROW
1840{ 2559{
1841#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
2561 EV_P;
2562 ECB_MEMORY_FENCE_ACQUIRE;
1842 EV_P = signals [signum - 1].loop; 2563 EV_A = signals [signum - 1].loop;
1843 2564
1844 if (!EV_A) 2565 if (!EV_A)
1845 return; 2566 return;
1846#endif 2567#endif
1847 2568
1848 if (!ev_active (&pipe_w))
1849 return;
1850
1851 signals [signum - 1].pending = 1; 2569 signals [signum - 1].pending = 1;
1852 evpipe_write (EV_A_ &sig_pending); 2570 evpipe_write (EV_A_ &sig_pending);
1853} 2571}
1854 2572
1855static void 2573static void
… …
1860#endif 2578#endif
1861 2579
1862 ev_feed_signal (signum); 2580 ev_feed_signal (signum);
1863} 2581}
1864 2582
1865void noinline 2583noinline
2584void
1866ev_feed_signal_event (EV_P_ int signum) 2585ev_feed_signal_event (EV_P_ int signum) EV_THROW
1867{ 2586{
1868 WL w; 2587 WL w;
1869 2588
1870 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2589 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1871 return; 2590 return;
1872 2591
1873 --signum; 2592 --signum;
1874 2593
1875#if EV_MULTIPLICITY 2594#if EV_MULTIPLICITY
… …
1879 if (expect_false (signals [signum].loop != EV_A)) 2598 if (expect_false (signals [signum].loop != EV_A))
1880 return; 2599 return;
1881#endif 2600#endif
1882 2601
1883 signals [signum].pending = 0; 2602 signals [signum].pending = 0;
2603 ECB_MEMORY_FENCE_RELEASE;
1884 2604
1885 for (w = signals [signum].head; w; w = w->next) 2605 for (w = signals [signum].head; w; w = w->next)
1886 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1887} 2607}
1888 2608
… …
1986#endif 2706#endif
1987#if EV_USE_SELECT 2707#if EV_USE_SELECT
1988# include "ev_select.c" 2708# include "ev_select.c"
1989#endif 2709#endif
1990 2710
1991int ecb_cold 2711ecb_cold int
1992ev_version_major (void) 2712ev_version_major (void) EV_THROW
1993{ 2713{
1994 return EV_VERSION_MAJOR; 2714 return EV_VERSION_MAJOR;
1995} 2715}
1996 2716
1997int ecb_cold 2717ecb_cold int
1998ev_version_minor (void) 2718ev_version_minor (void) EV_THROW
1999{ 2719{
2000 return EV_VERSION_MINOR; 2720 return EV_VERSION_MINOR;
2001} 2721}
2002 2722
2003/* return true if we are running with elevated privileges and should ignore env variables */ 2723/* return true if we are running with elevated privileges and should ignore env variables */
2004int inline_size ecb_cold 2724inline_size ecb_cold int
2005enable_secure (void) 2725enable_secure (void)
2006{ 2726{
2007#ifdef _WIN32 2727#ifdef _WIN32
2008 return 0; 2728 return 0;
2009#else 2729#else
2010 return getuid () != geteuid () 2730 return getuid () != geteuid ()
2011 || getgid () != getegid (); 2731 || getgid () != getegid ();
2012#endif 2732#endif
2013} 2733}
2014 2734
2015unsigned int ecb_cold 2735ecb_cold
2736unsigned int
2016ev_supported_backends (void) 2737ev_supported_backends (void) EV_THROW
2017{ 2738{
2018 unsigned int flags = 0; 2739 unsigned int flags = 0;
2019 2740
2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2021 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2742 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2024 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2025 2746
2026 return flags; 2747 return flags;
2027} 2748}
2028 2749
2029unsigned int ecb_cold 2750ecb_cold
2751unsigned int
2030ev_recommended_backends (void) 2752ev_recommended_backends (void) EV_THROW
2031{ 2753{
2032 unsigned int flags = ev_supported_backends (); 2754 unsigned int flags = ev_supported_backends ();
2033 2755
2034#ifndef __NetBSD__ 2756#ifndef __NetBSD__
2035 /* kqueue is borked on everything but netbsd apparently */ 2757 /* kqueue is borked on everything but netbsd apparently */
… …
2046#endif 2768#endif
2047 2769
2048 return flags; 2770 return flags;
2049} 2771}
2050 2772
2051unsigned int ecb_cold 2773ecb_cold
2774unsigned int
2052ev_embeddable_backends (void) 2775ev_embeddable_backends (void) EV_THROW
2053{ 2776{
2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2777 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2055 2778
2056 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2779 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2057 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2780 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2059 2782
2060 return flags; 2783 return flags;
2061} 2784}
2062 2785
2063unsigned int 2786unsigned int
2064ev_backend (EV_P) 2787ev_backend (EV_P) EV_THROW
2065{ 2788{
2066 return backend; 2789 return backend;
2067} 2790}
2068 2791
2069#if EV_FEATURE_API 2792#if EV_FEATURE_API
2070unsigned int 2793unsigned int
2071ev_iteration (EV_P) 2794ev_iteration (EV_P) EV_THROW
2072{ 2795{
2073 return loop_count; 2796 return loop_count;
2074} 2797}
2075 2798
2076unsigned int 2799unsigned int
2077ev_depth (EV_P) 2800ev_depth (EV_P) EV_THROW
2078{ 2801{
2079 return loop_depth; 2802 return loop_depth;
2080} 2803}
2081 2804
2082void 2805void
2083ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2806ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2084{ 2807{
2085 io_blocktime = interval; 2808 io_blocktime = interval;
2086} 2809}
2087 2810
2088void 2811void
2089ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2812ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2090{ 2813{
2091 timeout_blocktime = interval; 2814 timeout_blocktime = interval;
2092} 2815}
2093 2816
2094void 2817void
2095ev_set_userdata (EV_P_ void *data) 2818ev_set_userdata (EV_P_ void *data) EV_THROW
2096{ 2819{
2097 userdata = data; 2820 userdata = data;
2098} 2821}
2099 2822
2100void * 2823void *
2101ev_userdata (EV_P) 2824ev_userdata (EV_P) EV_THROW
2102{ 2825{
2103 return userdata; 2826 return userdata;
2104} 2827}
2105 2828
2106void 2829void
2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2830ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2108{ 2831{
2109 invoke_cb = invoke_pending_cb; 2832 invoke_cb = invoke_pending_cb;
2110} 2833}
2111 2834
2112void 2835void
2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2836ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2114{ 2837{
2115 release_cb = release; 2838 release_cb = release;
2116 acquire_cb = acquire; 2839 acquire_cb = acquire;
2117} 2840}
2118#endif 2841#endif
2119 2842
2120/* initialise a loop structure, must be zero-initialised */ 2843/* initialise a loop structure, must be zero-initialised */
2121static void noinline ecb_cold 2844noinline ecb_cold
2845static void
2122loop_init (EV_P_ unsigned int flags) 2846loop_init (EV_P_ unsigned int flags) EV_THROW
2123{ 2847{
2124 if (!backend) 2848 if (!backend)
2125 { 2849 {
2126 origflags = flags; 2850 origflags = flags;
2127 2851
… …
2172#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
2173 async_pending = 0; 2897 async_pending = 0;
2174#endif 2898#endif
2175 pipe_write_skipped = 0; 2899 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0; 2900 pipe_write_wanted = 0;
2901 evpipe [0] = -1;
2902 evpipe [1] = -1;
2177#if EV_USE_INOTIFY 2903#if EV_USE_INOTIFY
2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2904 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2179#endif 2905#endif
2180#if EV_USE_SIGNALFD 2906#if EV_USE_SIGNALFD
2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2907 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2211#endif 2937#endif
2212 } 2938 }
2213} 2939}
2214 2940
2215/* free up a loop structure */ 2941/* free up a loop structure */
2216void ecb_cold 2942ecb_cold
2943void
2217ev_loop_destroy (EV_P) 2944ev_loop_destroy (EV_P)
2218{ 2945{
2219 int i; 2946 int i;
2220 2947
2221#if EV_MULTIPLICITY 2948#if EV_MULTIPLICITY
… …
2232 EV_INVOKE_PENDING; 2959 EV_INVOKE_PENDING;
2233 } 2960 }
2234#endif 2961#endif
2235 2962
2236#if EV_CHILD_ENABLE 2963#if EV_CHILD_ENABLE
2237 if (ev_is_active (&childev)) 2964 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2238 { 2965 {
2239 ev_ref (EV_A); /* child watcher */ 2966 ev_ref (EV_A); /* child watcher */
2240 ev_signal_stop (EV_A_ &childev); 2967 ev_signal_stop (EV_A_ &childev);
2241 } 2968 }
2242#endif 2969#endif
… …
2244 if (ev_is_active (&pipe_w)) 2971 if (ev_is_active (&pipe_w))
2245 { 2972 {
2246 /*ev_ref (EV_A);*/ 2973 /*ev_ref (EV_A);*/
2247 /*ev_io_stop (EV_A_ &pipe_w);*/ 2974 /*ev_io_stop (EV_A_ &pipe_w);*/
2248 2975
2249#if EV_USE_EVENTFD
2250 if (evfd >= 0)
2251 close (evfd);
2252#endif
2253
2254 if (evpipe [0] >= 0)
2255 {
2256 EV_WIN32_CLOSE_FD (evpipe [0]); 2976 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2257 EV_WIN32_CLOSE_FD (evpipe [1]); 2977 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2258 }
2259 } 2978 }
2260 2979
2261#if EV_USE_SIGNALFD 2980#if EV_USE_SIGNALFD
2262 if (ev_is_active (&sigfd_w)) 2981 if (ev_is_active (&sigfd_w))
2263 close (sigfd); 2982 close (sigfd);
… …
2349#endif 3068#endif
2350#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
2351 infy_fork (EV_A); 3070 infy_fork (EV_A);
2352#endif 3071#endif
2353 3072
3073#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2354 if (ev_is_active (&pipe_w)) 3074 if (ev_is_active (&pipe_w) && postfork != 2)
2355 { 3075 {
2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2357 3077
2358 ev_ref (EV_A); 3078 ev_ref (EV_A);
2359 ev_io_stop (EV_A_ &pipe_w); 3079 ev_io_stop (EV_A_ &pipe_w);
2360 3080
2361#if EV_USE_EVENTFD
2362 if (evfd >= 0)
2363 close (evfd);
2364#endif
2365
2366 if (evpipe [0] >= 0) 3081 if (evpipe [0] >= 0)
2367 {
2368 EV_WIN32_CLOSE_FD (evpipe [0]); 3082 EV_WIN32_CLOSE_FD (evpipe [0]);
2369 EV_WIN32_CLOSE_FD (evpipe [1]);
2370 }
2371 3083
2372#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2373 evpipe_init (EV_A); 3084 evpipe_init (EV_A);
2374 /* now iterate over everything, in case we missed something */ 3085 /* iterate over everything, in case we missed something before */
2375 pipecb (EV_A_ &pipe_w, EV_READ); 3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2376#endif
2377 } 3087 }
3088#endif
2378 3089
2379 postfork = 0; 3090 postfork = 0;
2380} 3091}
2381 3092
2382#if EV_MULTIPLICITY 3093#if EV_MULTIPLICITY
2383 3094
3095ecb_cold
2384struct ev_loop * ecb_cold 3096struct ev_loop *
2385ev_loop_new (unsigned int flags) 3097ev_loop_new (unsigned int flags) EV_THROW
2386{ 3098{
2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3099 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2388 3100
2389 memset (EV_A, 0, sizeof (struct ev_loop)); 3101 memset (EV_A, 0, sizeof (struct ev_loop));
2390 loop_init (EV_A_ flags); 3102 loop_init (EV_A_ flags);
… …
2397} 3109}
2398 3110
2399#endif /* multiplicity */ 3111#endif /* multiplicity */
2400 3112
2401#if EV_VERIFY 3113#if EV_VERIFY
2402static void noinline ecb_cold 3114noinline ecb_cold
3115static void
2403verify_watcher (EV_P_ W w) 3116verify_watcher (EV_P_ W w)
2404{ 3117{
2405 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3118 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2406 3119
2407 if (w->pending) 3120 if (w->pending)
2408 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3121 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2409} 3122}
2410 3123
2411static void noinline ecb_cold 3124noinline ecb_cold
3125static void
2412verify_heap (EV_P_ ANHE *heap, int N) 3126verify_heap (EV_P_ ANHE *heap, int N)
2413{ 3127{
2414 int i; 3128 int i;
2415 3129
2416 for (i = HEAP0; i < N + HEAP0; ++i) 3130 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2421 3135
2422 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3136 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2423 } 3137 }
2424} 3138}
2425 3139
2426static void noinline ecb_cold 3140noinline ecb_cold
3141static void
2427array_verify (EV_P_ W *ws, int cnt) 3142array_verify (EV_P_ W *ws, int cnt)
2428{ 3143{
2429 while (cnt--) 3144 while (cnt--)
2430 { 3145 {
2431 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3146 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2434} 3149}
2435#endif 3150#endif
2436 3151
2437#if EV_FEATURE_API 3152#if EV_FEATURE_API
2438void ecb_cold 3153void ecb_cold
2439ev_verify (EV_P) 3154ev_verify (EV_P) EV_THROW
2440{ 3155{
2441#if EV_VERIFY 3156#if EV_VERIFY
2442 int i; 3157 int i;
2443 WL w; 3158 WL w, w2;
2444 3159
2445 assert (activecnt >= -1); 3160 assert (activecnt >= -1);
2446 3161
2447 assert (fdchangemax >= fdchangecnt); 3162 assert (fdchangemax >= fdchangecnt);
2448 for (i = 0; i < fdchangecnt; ++i) 3163 for (i = 0; i < fdchangecnt; ++i)
2449 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3164 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2450 3165
2451 assert (anfdmax >= 0); 3166 assert (anfdmax >= 0);
2452 for (i = 0; i < anfdmax; ++i) 3167 for (i = 0; i < anfdmax; ++i)
3168 {
3169 int j = 0;
3170
2453 for (w = anfds [i].head; w; w = w->next) 3171 for (w = w2 = anfds [i].head; w; w = w->next)
2454 { 3172 {
2455 verify_watcher (EV_A_ (W)w); 3173 verify_watcher (EV_A_ (W)w);
3174
3175 if (j++ & 1)
3176 {
3177 assert (("libev: io watcher list contains a loop", w != w2));
3178 w2 = w2->next;
3179 }
3180
2456 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3181 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2457 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3182 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2458 } 3183 }
3184 }
2459 3185
2460 assert (timermax >= timercnt); 3186 assert (timermax >= timercnt);
2461 verify_heap (EV_A_ timers, timercnt); 3187 verify_heap (EV_A_ timers, timercnt);
2462 3188
2463#if EV_PERIODIC_ENABLE 3189#if EV_PERIODIC_ENABLE
… …
2509#endif 3235#endif
2510} 3236}
2511#endif 3237#endif
2512 3238
2513#if EV_MULTIPLICITY 3239#if EV_MULTIPLICITY
3240ecb_cold
2514struct ev_loop * ecb_cold 3241struct ev_loop *
2515#else 3242#else
2516int 3243int
2517#endif 3244#endif
2518ev_default_loop (unsigned int flags) 3245ev_default_loop (unsigned int flags) EV_THROW
2519{ 3246{
2520 if (!ev_default_loop_ptr) 3247 if (!ev_default_loop_ptr)
2521 { 3248 {
2522#if EV_MULTIPLICITY 3249#if EV_MULTIPLICITY
2523 EV_P = ev_default_loop_ptr = &default_loop_struct; 3250 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2542 3269
2543 return ev_default_loop_ptr; 3270 return ev_default_loop_ptr;
2544} 3271}
2545 3272
2546void 3273void
2547ev_loop_fork (EV_P) 3274ev_loop_fork (EV_P) EV_THROW
2548{ 3275{
2549 postfork = 1; /* must be in line with ev_default_fork */ 3276 postfork = 1;
2550} 3277}
2551 3278
2552/*****************************************************************************/ 3279/*****************************************************************************/
2553 3280
2554void 3281void
… …
2556{ 3283{
2557 EV_CB_INVOKE ((W)w, revents); 3284 EV_CB_INVOKE ((W)w, revents);
2558} 3285}
2559 3286
2560unsigned int 3287unsigned int
2561ev_pending_count (EV_P) 3288ev_pending_count (EV_P) EV_THROW
2562{ 3289{
2563 int pri; 3290 int pri;
2564 unsigned int count = 0; 3291 unsigned int count = 0;
2565 3292
2566 for (pri = NUMPRI; pri--; ) 3293 for (pri = NUMPRI; pri--; )
2567 count += pendingcnt [pri]; 3294 count += pendingcnt [pri];
2568 3295
2569 return count; 3296 return count;
2570} 3297}
2571 3298
2572void noinline 3299noinline
3300void
2573ev_invoke_pending (EV_P) 3301ev_invoke_pending (EV_P)
2574{ 3302{
2575 int pri; 3303 pendingpri = NUMPRI;
2576 3304
2577 for (pri = NUMPRI; pri--; ) 3305 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3306 {
3307 --pendingpri;
3308
2578 while (pendingcnt [pri]) 3309 while (pendingcnt [pendingpri])
2579 { 3310 {
2580 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3311 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2581 3312
2582 p->w->pending = 0; 3313 p->w->pending = 0;
2583 EV_CB_INVOKE (p->w, p->events); 3314 EV_CB_INVOKE (p->w, p->events);
2584 EV_FREQUENT_CHECK; 3315 EV_FREQUENT_CHECK;
2585 } 3316 }
3317 }
2586} 3318}
2587 3319
2588#if EV_IDLE_ENABLE 3320#if EV_IDLE_ENABLE
2589/* make idle watchers pending. this handles the "call-idle */ 3321/* make idle watchers pending. this handles the "call-idle */
2590/* only when higher priorities are idle" logic */ 3322/* only when higher priorities are idle" logic */
… …
2648 } 3380 }
2649} 3381}
2650 3382
2651#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
2652 3384
2653static void noinline 3385noinline
3386static void
2654periodic_recalc (EV_P_ ev_periodic *w) 3387periodic_recalc (EV_P_ ev_periodic *w)
2655{ 3388{
2656 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3389 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2657 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3390 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2658 3391
… …
2680{ 3413{
2681 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
2682 3415
2683 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3416 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2684 { 3417 {
2685 int feed_count = 0;
2686
2687 do 3418 do
2688 { 3419 {
2689 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3420 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2690 3421
2691 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3422 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2718 } 3449 }
2719} 3450}
2720 3451
2721/* simply recalculate all periodics */ 3452/* simply recalculate all periodics */
2722/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3453/* TODO: maybe ensure that at least one event happens when jumping forward? */
2723static void noinline ecb_cold 3454noinline ecb_cold
3455static void
2724periodics_reschedule (EV_P) 3456periodics_reschedule (EV_P)
2725{ 3457{
2726 int i; 3458 int i;
2727 3459
2728 /* adjust periodics after time jump */ 3460 /* adjust periodics after time jump */
… …
2741 reheap (periodics, periodiccnt); 3473 reheap (periodics, periodiccnt);
2742} 3474}
2743#endif 3475#endif
2744 3476
2745/* adjust all timers by a given offset */ 3477/* adjust all timers by a given offset */
2746static void noinline ecb_cold 3478noinline ecb_cold
3479static void
2747timers_reschedule (EV_P_ ev_tstamp adjust) 3480timers_reschedule (EV_P_ ev_tstamp adjust)
2748{ 3481{
2749 int i; 3482 int i;
2750 3483
2751 for (i = 0; i < timercnt; ++i) 3484 for (i = 0; i < timercnt; ++i)
… …
2825 3558
2826 mn_now = ev_rt_now; 3559 mn_now = ev_rt_now;
2827 } 3560 }
2828} 3561}
2829 3562
2830void 3563int
2831ev_run (EV_P_ int flags) 3564ev_run (EV_P_ int flags)
2832{ 3565{
2833#if EV_FEATURE_API 3566#if EV_FEATURE_API
2834 ++loop_depth; 3567 ++loop_depth;
2835#endif 3568#endif
… …
2948#endif 3681#endif
2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3682 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2950 backend_poll (EV_A_ waittime); 3683 backend_poll (EV_A_ waittime);
2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3684 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952 3685
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3686 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2954 3687
3688 ECB_MEMORY_FENCE_ACQUIRE;
2955 if (pipe_write_skipped) 3689 if (pipe_write_skipped)
2956 { 3690 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3691 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3692 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 } 3693 }
… …
2992 loop_done = EVBREAK_CANCEL; 3726 loop_done = EVBREAK_CANCEL;
2993 3727
2994#if EV_FEATURE_API 3728#if EV_FEATURE_API
2995 --loop_depth; 3729 --loop_depth;
2996#endif 3730#endif
2997}
2998 3731
3732 return activecnt;
3733}
3734
2999void 3735void
3000ev_break (EV_P_ int how) 3736ev_break (EV_P_ int how) EV_THROW
3001{ 3737{
3002 loop_done = how; 3738 loop_done = how;
3003} 3739}
3004 3740
3005void 3741void
3006ev_ref (EV_P) 3742ev_ref (EV_P) EV_THROW
3007{ 3743{
3008 ++activecnt; 3744 ++activecnt;
3009} 3745}
3010 3746
3011void 3747void
3012ev_unref (EV_P) 3748ev_unref (EV_P) EV_THROW
3013{ 3749{
3014 --activecnt; 3750 --activecnt;
3015} 3751}
3016 3752
3017void 3753void
3018ev_now_update (EV_P) 3754ev_now_update (EV_P) EV_THROW
3019{ 3755{
3020 time_update (EV_A_ 1e100); 3756 time_update (EV_A_ 1e100);
3021} 3757}
3022 3758
3023void 3759void
3024ev_suspend (EV_P) 3760ev_suspend (EV_P) EV_THROW
3025{ 3761{
3026 ev_now_update (EV_A); 3762 ev_now_update (EV_A);
3027} 3763}
3028 3764
3029void 3765void
3030ev_resume (EV_P) 3766ev_resume (EV_P) EV_THROW
3031{ 3767{
3032 ev_tstamp mn_prev = mn_now; 3768 ev_tstamp mn_prev = mn_now;
3033 3769
3034 ev_now_update (EV_A); 3770 ev_now_update (EV_A);
3035 timers_reschedule (EV_A_ mn_now - mn_prev); 3771 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3074 w->pending = 0; 3810 w->pending = 0;
3075 } 3811 }
3076} 3812}
3077 3813
3078int 3814int
3079ev_clear_pending (EV_P_ void *w) 3815ev_clear_pending (EV_P_ void *w) EV_THROW
3080{ 3816{
3081 W w_ = (W)w; 3817 W w_ = (W)w;
3082 int pending = w_->pending; 3818 int pending = w_->pending;
3083 3819
3084 if (expect_true (pending)) 3820 if (expect_true (pending))
… …
3116 w->active = 0; 3852 w->active = 0;
3117} 3853}
3118 3854
3119/*****************************************************************************/ 3855/*****************************************************************************/
3120 3856
3121void noinline 3857noinline
3858void
3122ev_io_start (EV_P_ ev_io *w) 3859ev_io_start (EV_P_ ev_io *w) EV_THROW
3123{ 3860{
3124 int fd = w->fd; 3861 int fd = w->fd;
3125 3862
3126 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
3127 return; 3864 return;
… …
3133 3870
3134 ev_start (EV_A_ (W)w, 1); 3871 ev_start (EV_A_ (W)w, 1);
3135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3872 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3136 wlist_add (&anfds[fd].head, (WL)w); 3873 wlist_add (&anfds[fd].head, (WL)w);
3137 3874
3875 /* common bug, apparently */
3876 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3877
3138 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3878 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3139 w->events &= ~EV__IOFDSET; 3879 w->events &= ~EV__IOFDSET;
3140 3880
3141 EV_FREQUENT_CHECK; 3881 EV_FREQUENT_CHECK;
3142} 3882}
3143 3883
3144void noinline 3884noinline
3885void
3145ev_io_stop (EV_P_ ev_io *w) 3886ev_io_stop (EV_P_ ev_io *w) EV_THROW
3146{ 3887{
3147 clear_pending (EV_A_ (W)w); 3888 clear_pending (EV_A_ (W)w);
3148 if (expect_false (!ev_is_active (w))) 3889 if (expect_false (!ev_is_active (w)))
3149 return; 3890 return;
3150 3891
… …
3158 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3899 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3159 3900
3160 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
3161} 3902}
3162 3903
3163void noinline 3904noinline
3905void
3164ev_timer_start (EV_P_ ev_timer *w) 3906ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3165{ 3907{
3166 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
3167 return; 3909 return;
3168 3910
3169 ev_at (w) += mn_now; 3911 ev_at (w) += mn_now;
… …
3182 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
3183 3925
3184 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3926 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3185} 3927}
3186 3928
3187void noinline 3929noinline
3930void
3188ev_timer_stop (EV_P_ ev_timer *w) 3931ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3189{ 3932{
3190 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
3192 return; 3935 return;
3193 3936
… …
3212 ev_stop (EV_A_ (W)w); 3955 ev_stop (EV_A_ (W)w);
3213 3956
3214 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
3215} 3958}
3216 3959
3217void noinline 3960noinline
3961void
3218ev_timer_again (EV_P_ ev_timer *w) 3962ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3219{ 3963{
3220 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3965
3966 clear_pending (EV_A_ (W)w);
3221 3967
3222 if (ev_is_active (w)) 3968 if (ev_is_active (w))
3223 { 3969 {
3224 if (w->repeat) 3970 if (w->repeat)
3225 { 3971 {
… …
3238 3984
3239 EV_FREQUENT_CHECK; 3985 EV_FREQUENT_CHECK;
3240} 3986}
3241 3987
3242ev_tstamp 3988ev_tstamp
3243ev_timer_remaining (EV_P_ ev_timer *w) 3989ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3244{ 3990{
3245 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3991 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3246} 3992}
3247 3993
3248#if EV_PERIODIC_ENABLE 3994#if EV_PERIODIC_ENABLE
3249void noinline 3995noinline
3996void
3250ev_periodic_start (EV_P_ ev_periodic *w) 3997ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3251{ 3998{
3252 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
3253 return; 4000 return;
3254 4001
3255 if (w->reschedule_cb) 4002 if (w->reschedule_cb)
… …
3274 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
3275 4022
3276 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4023 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3277} 4024}
3278 4025
3279void noinline 4026noinline
4027void
3280ev_periodic_stop (EV_P_ ev_periodic *w) 4028ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3281{ 4029{
3282 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4031 if (expect_false (!ev_is_active (w)))
3284 return; 4032 return;
3285 4033
… …
3302 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
3303 4051
3304 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3305} 4053}
3306 4054
3307void noinline 4055noinline
4056void
3308ev_periodic_again (EV_P_ ev_periodic *w) 4057ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3309{ 4058{
3310 /* TODO: use adjustheap and recalculation */ 4059 /* TODO: use adjustheap and recalculation */
3311 ev_periodic_stop (EV_A_ w); 4060 ev_periodic_stop (EV_A_ w);
3312 ev_periodic_start (EV_A_ w); 4061 ev_periodic_start (EV_A_ w);
3313} 4062}
… …
3317# define SA_RESTART 0 4066# define SA_RESTART 0
3318#endif 4067#endif
3319 4068
3320#if EV_SIGNAL_ENABLE 4069#if EV_SIGNAL_ENABLE
3321 4070
3322void noinline 4071noinline
4072void
3323ev_signal_start (EV_P_ ev_signal *w) 4073ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3324{ 4074{
3325 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
3326 return; 4076 return;
3327 4077
3328 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4078 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3330#if EV_MULTIPLICITY 4080#if EV_MULTIPLICITY
3331 assert (("libev: a signal must not be attached to two different loops", 4081 assert (("libev: a signal must not be attached to two different loops",
3332 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4082 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3333 4083
3334 signals [w->signum - 1].loop = EV_A; 4084 signals [w->signum - 1].loop = EV_A;
4085 ECB_MEMORY_FENCE_RELEASE;
3335#endif 4086#endif
3336 4087
3337 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
3338 4089
3339#if EV_USE_SIGNALFD 4090#if EV_USE_SIGNALFD
… …
3398 } 4149 }
3399 4150
3400 EV_FREQUENT_CHECK; 4151 EV_FREQUENT_CHECK;
3401} 4152}
3402 4153
3403void noinline 4154noinline
4155void
3404ev_signal_stop (EV_P_ ev_signal *w) 4156ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3405{ 4157{
3406 clear_pending (EV_A_ (W)w); 4158 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4159 if (expect_false (!ev_is_active (w)))
3408 return; 4160 return;
3409 4161
… …
3440#endif 4192#endif
3441 4193
3442#if EV_CHILD_ENABLE 4194#if EV_CHILD_ENABLE
3443 4195
3444void 4196void
3445ev_child_start (EV_P_ ev_child *w) 4197ev_child_start (EV_P_ ev_child *w) EV_THROW
3446{ 4198{
3447#if EV_MULTIPLICITY 4199#if EV_MULTIPLICITY
3448 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4200 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3449#endif 4201#endif
3450 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
… …
3457 4209
3458 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
3459} 4211}
3460 4212
3461void 4213void
3462ev_child_stop (EV_P_ ev_child *w) 4214ev_child_stop (EV_P_ ev_child *w) EV_THROW
3463{ 4215{
3464 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
3465 if (expect_false (!ev_is_active (w))) 4217 if (expect_false (!ev_is_active (w)))
3466 return; 4218 return;
3467 4219
… …
3484 4236
3485#define DEF_STAT_INTERVAL 5.0074891 4237#define DEF_STAT_INTERVAL 5.0074891
3486#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4238#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3487#define MIN_STAT_INTERVAL 0.1074891 4239#define MIN_STAT_INTERVAL 0.1074891
3488 4240
3489static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4241noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3490 4242
3491#if EV_USE_INOTIFY 4243#if EV_USE_INOTIFY
3492 4244
3493/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4245/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3494# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4246# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3495 4247
3496static void noinline 4248noinline
4249static void
3497infy_add (EV_P_ ev_stat *w) 4250infy_add (EV_P_ ev_stat *w)
3498{ 4251{
3499 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); 4252 w->wd = inotify_add_watch (fs_fd, w->path,
4253 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4254 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4255 | IN_DONT_FOLLOW | IN_MASK_ADD);
3500 4256
3501 if (w->wd >= 0) 4257 if (w->wd >= 0)
3502 { 4258 {
3503 struct statfs sfs; 4259 struct statfs sfs;
3504 4260
… …
3508 4264
3509 if (!fs_2625) 4265 if (!fs_2625)
3510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4266 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3511 else if (!statfs (w->path, &sfs) 4267 else if (!statfs (w->path, &sfs)
3512 && (sfs.f_type == 0x1373 /* devfs */ 4268 && (sfs.f_type == 0x1373 /* devfs */
4269 || sfs.f_type == 0x4006 /* fat */
4270 || sfs.f_type == 0x4d44 /* msdos */
3513 || sfs.f_type == 0xEF53 /* ext2/3 */ 4271 || sfs.f_type == 0xEF53 /* ext2/3 */
4272 || sfs.f_type == 0x72b6 /* jffs2 */
4273 || sfs.f_type == 0x858458f6 /* ramfs */
4274 || sfs.f_type == 0x5346544e /* ntfs */
3514 || sfs.f_type == 0x3153464a /* jfs */ 4275 || sfs.f_type == 0x3153464a /* jfs */
4276 || sfs.f_type == 0x9123683e /* btrfs */
3515 || sfs.f_type == 0x52654973 /* reiser3 */ 4277 || sfs.f_type == 0x52654973 /* reiser3 */
3516 || sfs.f_type == 0x01021994 /* tempfs */ 4278 || sfs.f_type == 0x01021994 /* tmpfs */
3517 || sfs.f_type == 0x58465342 /* xfs */)) 4279 || sfs.f_type == 0x58465342 /* xfs */))
3518 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4280 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3519 else 4281 else
3520 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4282 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3521 } 4283 }
… …
3556 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4318 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3557 ev_timer_again (EV_A_ &w->timer); 4319 ev_timer_again (EV_A_ &w->timer);
3558 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3559} 4321}
3560 4322
3561static void noinline 4323noinline
4324static void
3562infy_del (EV_P_ ev_stat *w) 4325infy_del (EV_P_ ev_stat *w)
3563{ 4326{
3564 int slot; 4327 int slot;
3565 int wd = w->wd; 4328 int wd = w->wd;
3566 4329
… …
3573 4336
3574 /* remove this watcher, if others are watching it, they will rearm */ 4337 /* remove this watcher, if others are watching it, they will rearm */
3575 inotify_rm_watch (fs_fd, wd); 4338 inotify_rm_watch (fs_fd, wd);
3576} 4339}
3577 4340
3578static void noinline 4341noinline
4342static void
3579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4343infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3580{ 4344{
3581 if (slot < 0) 4345 if (slot < 0)
3582 /* overflow, need to check for all hash slots */ 4346 /* overflow, need to check for all hash slots */
3583 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4347 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3619 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4383 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3620 ofs += sizeof (struct inotify_event) + ev->len; 4384 ofs += sizeof (struct inotify_event) + ev->len;
3621 } 4385 }
3622} 4386}
3623 4387
3624inline_size void ecb_cold 4388inline_size ecb_cold
4389void
3625ev_check_2625 (EV_P) 4390ev_check_2625 (EV_P)
3626{ 4391{
3627 /* kernels < 2.6.25 are borked 4392 /* kernels < 2.6.25 are borked
3628 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4393 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3629 */ 4394 */
… …
3634} 4399}
3635 4400
3636inline_size int 4401inline_size int
3637infy_newfd (void) 4402infy_newfd (void)
3638{ 4403{
3639#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4404#if defined IN_CLOEXEC && defined IN_NONBLOCK
3640 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4405 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3641 if (fd >= 0) 4406 if (fd >= 0)
3642 return fd; 4407 return fd;
3643#endif 4408#endif
3644 return inotify_init (); 4409 return inotify_init ();
… …
3719#else 4484#else
3720# define EV_LSTAT(p,b) lstat (p, b) 4485# define EV_LSTAT(p,b) lstat (p, b)
3721#endif 4486#endif
3722 4487
3723void 4488void
3724ev_stat_stat (EV_P_ ev_stat *w) 4489ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3725{ 4490{
3726 if (lstat (w->path, &w->attr) < 0) 4491 if (lstat (w->path, &w->attr) < 0)
3727 w->attr.st_nlink = 0; 4492 w->attr.st_nlink = 0;
3728 else if (!w->attr.st_nlink) 4493 else if (!w->attr.st_nlink)
3729 w->attr.st_nlink = 1; 4494 w->attr.st_nlink = 1;
3730} 4495}
3731 4496
3732static void noinline 4497noinline
4498static void
3733stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4499stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3734{ 4500{
3735 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4501 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3736 4502
3737 ev_statdata prev = w->attr; 4503 ev_statdata prev = w->attr;
… …
3768 ev_feed_event (EV_A_ w, EV_STAT); 4534 ev_feed_event (EV_A_ w, EV_STAT);
3769 } 4535 }
3770} 4536}
3771 4537
3772void 4538void
3773ev_stat_start (EV_P_ ev_stat *w) 4539ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3774{ 4540{
3775 if (expect_false (ev_is_active (w))) 4541 if (expect_false (ev_is_active (w)))
3776 return; 4542 return;
3777 4543
3778 ev_stat_stat (EV_A_ w); 4544 ev_stat_stat (EV_A_ w);
… …
3799 4565
3800 EV_FREQUENT_CHECK; 4566 EV_FREQUENT_CHECK;
3801} 4567}
3802 4568
3803void 4569void
3804ev_stat_stop (EV_P_ ev_stat *w) 4570ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3805{ 4571{
3806 clear_pending (EV_A_ (W)w); 4572 clear_pending (EV_A_ (W)w);
3807 if (expect_false (!ev_is_active (w))) 4573 if (expect_false (!ev_is_active (w)))
3808 return; 4574 return;
3809 4575
… …
3825} 4591}
3826#endif 4592#endif
3827 4593
3828#if EV_IDLE_ENABLE 4594#if EV_IDLE_ENABLE
3829void 4595void
3830ev_idle_start (EV_P_ ev_idle *w) 4596ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3831{ 4597{
3832 if (expect_false (ev_is_active (w))) 4598 if (expect_false (ev_is_active (w)))
3833 return; 4599 return;
3834 4600
3835 pri_adjust (EV_A_ (W)w); 4601 pri_adjust (EV_A_ (W)w);
… …
3848 4614
3849 EV_FREQUENT_CHECK; 4615 EV_FREQUENT_CHECK;
3850} 4616}
3851 4617
3852void 4618void
3853ev_idle_stop (EV_P_ ev_idle *w) 4619ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3854{ 4620{
3855 clear_pending (EV_A_ (W)w); 4621 clear_pending (EV_A_ (W)w);
3856 if (expect_false (!ev_is_active (w))) 4622 if (expect_false (!ev_is_active (w)))
3857 return; 4623 return;
3858 4624
… …
3872} 4638}
3873#endif 4639#endif
3874 4640
3875#if EV_PREPARE_ENABLE 4641#if EV_PREPARE_ENABLE
3876void 4642void
3877ev_prepare_start (EV_P_ ev_prepare *w) 4643ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3878{ 4644{
3879 if (expect_false (ev_is_active (w))) 4645 if (expect_false (ev_is_active (w)))
3880 return; 4646 return;
3881 4647
3882 EV_FREQUENT_CHECK; 4648 EV_FREQUENT_CHECK;
… …
3887 4653
3888 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3889} 4655}
3890 4656
3891void 4657void
3892ev_prepare_stop (EV_P_ ev_prepare *w) 4658ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3893{ 4659{
3894 clear_pending (EV_A_ (W)w); 4660 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 4661 if (expect_false (!ev_is_active (w)))
3896 return; 4662 return;
3897 4663
… …
3910} 4676}
3911#endif 4677#endif
3912 4678
3913#if EV_CHECK_ENABLE 4679#if EV_CHECK_ENABLE
3914void 4680void
3915ev_check_start (EV_P_ ev_check *w) 4681ev_check_start (EV_P_ ev_check *w) EV_THROW
3916{ 4682{
3917 if (expect_false (ev_is_active (w))) 4683 if (expect_false (ev_is_active (w)))
3918 return; 4684 return;
3919 4685
3920 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
… …
3925 4691
3926 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
3927} 4693}
3928 4694
3929void 4695void
3930ev_check_stop (EV_P_ ev_check *w) 4696ev_check_stop (EV_P_ ev_check *w) EV_THROW
3931{ 4697{
3932 clear_pending (EV_A_ (W)w); 4698 clear_pending (EV_A_ (W)w);
3933 if (expect_false (!ev_is_active (w))) 4699 if (expect_false (!ev_is_active (w)))
3934 return; 4700 return;
3935 4701
… …
3947 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3948} 4714}
3949#endif 4715#endif
3950 4716
3951#if EV_EMBED_ENABLE 4717#if EV_EMBED_ENABLE
3952void noinline 4718noinline
4719void
3953ev_embed_sweep (EV_P_ ev_embed *w) 4720ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3954{ 4721{
3955 ev_run (w->other, EVRUN_NOWAIT); 4722 ev_run (w->other, EVRUN_NOWAIT);
3956} 4723}
3957 4724
3958static void 4725static void
… …
4006 ev_idle_stop (EV_A_ idle); 4773 ev_idle_stop (EV_A_ idle);
4007} 4774}
4008#endif 4775#endif
4009 4776
4010void 4777void
4011ev_embed_start (EV_P_ ev_embed *w) 4778ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4012{ 4779{
4013 if (expect_false (ev_is_active (w))) 4780 if (expect_false (ev_is_active (w)))
4014 return; 4781 return;
4015 4782
4016 { 4783 {
… …
4037 4804
4038 EV_FREQUENT_CHECK; 4805 EV_FREQUENT_CHECK;
4039} 4806}
4040 4807
4041void 4808void
4042ev_embed_stop (EV_P_ ev_embed *w) 4809ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4043{ 4810{
4044 clear_pending (EV_A_ (W)w); 4811 clear_pending (EV_A_ (W)w);
4045 if (expect_false (!ev_is_active (w))) 4812 if (expect_false (!ev_is_active (w)))
4046 return; 4813 return;
4047 4814
… …
4057} 4824}
4058#endif 4825#endif
4059 4826
4060#if EV_FORK_ENABLE 4827#if EV_FORK_ENABLE
4061void 4828void
4062ev_fork_start (EV_P_ ev_fork *w) 4829ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4063{ 4830{
4064 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
4065 return; 4832 return;
4066 4833
4067 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
… …
4072 4839
4073 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
4074} 4841}
4075 4842
4076void 4843void
4077ev_fork_stop (EV_P_ ev_fork *w) 4844ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4078{ 4845{
4079 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
4080 if (expect_false (!ev_is_active (w))) 4847 if (expect_false (!ev_is_active (w)))
4081 return; 4848 return;
4082 4849
… …
4095} 4862}
4096#endif 4863#endif
4097 4864
4098#if EV_CLEANUP_ENABLE 4865#if EV_CLEANUP_ENABLE
4099void 4866void
4100ev_cleanup_start (EV_P_ ev_cleanup *w) 4867ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4101{ 4868{
4102 if (expect_false (ev_is_active (w))) 4869 if (expect_false (ev_is_active (w)))
4103 return; 4870 return;
4104 4871
4105 EV_FREQUENT_CHECK; 4872 EV_FREQUENT_CHECK;
… …
4112 ev_unref (EV_A); 4879 ev_unref (EV_A);
4113 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
4114} 4881}
4115 4882
4116void 4883void
4117ev_cleanup_stop (EV_P_ ev_cleanup *w) 4884ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4118{ 4885{
4119 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w))) 4887 if (expect_false (!ev_is_active (w)))
4121 return; 4888 return;
4122 4889
… …
4136} 4903}
4137#endif 4904#endif
4138 4905
4139#if EV_ASYNC_ENABLE 4906#if EV_ASYNC_ENABLE
4140void 4907void
4141ev_async_start (EV_P_ ev_async *w) 4908ev_async_start (EV_P_ ev_async *w) EV_THROW
4142{ 4909{
4143 if (expect_false (ev_is_active (w))) 4910 if (expect_false (ev_is_active (w)))
4144 return; 4911 return;
4145 4912
4146 w->sent = 0; 4913 w->sent = 0;
… …
4155 4922
4156 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
4157} 4924}
4158 4925
4159void 4926void
4160ev_async_stop (EV_P_ ev_async *w) 4927ev_async_stop (EV_P_ ev_async *w) EV_THROW
4161{ 4928{
4162 clear_pending (EV_A_ (W)w); 4929 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 4930 if (expect_false (!ev_is_active (w)))
4164 return; 4931 return;
4165 4932
… …
4176 4943
4177 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
4178} 4945}
4179 4946
4180void 4947void
4181ev_async_send (EV_P_ ev_async *w) 4948ev_async_send (EV_P_ ev_async *w) EV_THROW
4182{ 4949{
4183 w->sent = 1; 4950 w->sent = 1;
4184 evpipe_write (EV_A_ &async_pending); 4951 evpipe_write (EV_A_ &async_pending);
4185} 4952}
4186#endif 4953#endif
… …
4223 4990
4224 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4991 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4225} 4992}
4226 4993
4227void 4994void
4228ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4995ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4229{ 4996{
4230 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4997 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4231 4998
4232 if (expect_false (!once)) 4999 if (expect_false (!once))
4233 { 5000 {
… …
4254} 5021}
4255 5022
4256/*****************************************************************************/ 5023/*****************************************************************************/
4257 5024
4258#if EV_WALK_ENABLE 5025#if EV_WALK_ENABLE
4259void ecb_cold 5026ecb_cold
5027void
4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5028ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4261{ 5029{
4262 int i, j; 5030 int i, j;
4263 ev_watcher_list *wl, *wn; 5031 ev_watcher_list *wl, *wn;
4264 5032
4265 if (types & (EV_IO | EV_EMBED)) 5033 if (types & (EV_IO | EV_EMBED))
… …
4371 5139
4372#if EV_MULTIPLICITY 5140#if EV_MULTIPLICITY
4373 #include "ev_wrap.h" 5141 #include "ev_wrap.h"
4374#endif 5142#endif
4375 5143
4376EV_CPP(})
4377

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