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Comparing libev/ev.c (file contents):
Revision 1.419 by root, Thu Apr 12 04:10:15 2012 UTC vs.
Revision 1.457 by root, Thu Sep 5 18:45:29 2013 UTC

201# include <sys/wait.h> 201# include <sys/wait.h>
202# include <unistd.h> 202# include <unistd.h>
203#else 203#else
204# include <io.h> 204# include <io.h>
205# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
206# include <windows.h> 207# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
209# endif 210# endif
210# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
356 357
357#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 360#endif
360 361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 381# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
369# else 386# else
372# endif 389# endif
373#endif 390#endif
374 391
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 393
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 394#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 395# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 396# define EV_USE_MONOTONIC 0
386#endif 397#endif
387 398
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
412# endif 423# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 424#endif
418 425
419#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 428# include <stdint.h>
507 */ 514 */
508 515
509#ifndef ECB_H 516#ifndef ECB_H
510#define ECB_H 517#define ECB_H
511 518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
512#ifdef _WIN32 522#ifdef _WIN32
513 typedef signed char int8_t; 523 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 524 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 525 typedef signed short int16_t;
516 typedef unsigned short uint16_t; 526 typedef unsigned short uint16_t;
521 typedef unsigned long long uint64_t; 531 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 532 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 533 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 534 typedef unsigned __int64 uint64_t;
525 #endif 535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
526#else 545#else
527 #include <inttypes.h> 546 #include <inttypes.h>
547 #if UINTMAX_MAX > 0xffffffffU
548 #define ECB_PTRSIZE 8
549 #else
550 #define ECB_PTRSIZE 4
551 #endif
552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if __ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
560 #endif
528#endif 561#endif
529 562
530/* many compilers define _GNUC_ to some versions but then only implement 563/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 564 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 565 * causing enormous grief in return for some better fake benchmark numbers.
540 #else 573 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 575 #endif
543#endif 576#endif
544 577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
545/*****************************************************************************/ 594/*****************************************************************************/
546 595
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 598
550#if ECB_NO_THREADS 599#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 600 #define ECB_NO_SMP 1
552#endif 601#endif
553 602
554#if ECB_NO_THREADS || ECB_NO_SMP 603#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 604 #define ECB_MEMORY_FENCE do { } while (0)
556#endif 605#endif
557 606
558#ifndef ECB_MEMORY_FENCE 607#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__ 609 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 625 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__ 629 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__ 631 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force it's use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
584 #elif defined __alpha__ 635 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
639 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
640 #elif defined __ia64__
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
642 #elif defined __m68k__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
644 #elif defined __m88k__
645 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
646 #elif defined __sh__
647 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
586 #endif 648 #endif
587 #endif 649 #endif
588#endif 650#endif
589 651
590#ifndef ECB_MEMORY_FENCE 652#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(4,7)
654 /* see comment below (stdatomic.h) about the C11 memory model. */
655 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
656
657 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
658 * without risking compile time errors with other compilers. We *could*
659 * define our own ecb_clang_has_feature, but I just can't be bothered to work
660 * around this shit time and again.
661 * #elif defined __clang && __has_feature (cxx_atomic)
662 * // see comment below (stdatomic.h) about the C11 memory model.
663 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
664 */
665
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 666 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize () 667 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 668 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 669 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 670 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 671 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 672 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
609 #define ECB_MEMORY_FENCE __sync () 682 #define ECB_MEMORY_FENCE __sync ()
610 #endif 683 #endif
611#endif 684#endif
612 685
613#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
687 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
688 /* we assume that these memory fences work on all variables/all memory accesses, */
689 /* not just C11 atomics and atomic accesses */
690 #include <stdatomic.h>
691 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
692 /* any fence other than seq_cst, which isn't very efficient for us. */
693 /* Why that is, we don't know - either the C11 memory model is quite useless */
694 /* for most usages, or gcc and clang have a bug */
695 /* I *currently* lean towards the latter, and inefficiently implement */
696 /* all three of ecb's fences as a seq_cst fence */
697 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
698 #endif
699#endif
700
701#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS 702 #if !ECB_AVOID_PTHREADS
615 /* 703 /*
616 * if you get undefined symbol references to pthread_mutex_lock, 704 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement 705 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler 706 * the ECB_MEMORY_FENCE operations for your cpu/compiler
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 724 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif 725#endif
638 726
639/*****************************************************************************/ 727/*****************************************************************************/
640 728
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus 729#if __cplusplus
644 #define ecb_inline static inline 730 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5) 731#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__ 732 #define ecb_inline static __inline__
647#elif ECB_C99 733#elif ECB_C99
685#elif ECB_GCC_VERSION(3,0) 771#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x) 772 #define ecb_decltype(x) __typeof(x)
687#endif 773#endif
688 774
689#define ecb_noinline ecb_attribute ((__noinline__)) 775#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__)) 776#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__)) 777#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__)) 778#define ecb_pure ecb_attribute ((__pure__))
779
780#if ECB_C11
781 #define ecb_noreturn _Noreturn
782#else
783 #define ecb_noreturn ecb_attribute ((__noreturn__))
784#endif
694 785
695#if ECB_GCC_VERSION(4,3) 786#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__)) 787 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__)) 788 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__)) 789 #define ecb_cold ecb_attribute ((__cold__))
789 880
790 return r + ecb_ld32 (x); 881 return r + ecb_ld32 (x);
791 } 882 }
792#endif 883#endif
793 884
885ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
886ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
887ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
888ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
889
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 890ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 891ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{ 892{
797 return ( (x * 0x0802U & 0x22110U) 893 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 894 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
882 ecb_inline void ecb_unreachable (void) ecb_noreturn; 978 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { } 979 ecb_inline void ecb_unreachable (void) { }
884#endif 980#endif
885 981
886/* try to tell the compiler that some condition is definitely true */ 982/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 983#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
888 984
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 985ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char 986ecb_inline unsigned char
891ecb_byteorder_helper (void) 987ecb_byteorder_helper (void)
892{ 988{
893 const uint32_t u = 0x11223344; 989 /* the union code still generates code under pressure in gcc, */
894 return *(unsigned char *)&u; 990 /* but less than using pointers, and always seems to */
991 /* successfully return a constant. */
992 /* the reason why we have this horrible preprocessor mess */
993 /* is to avoid it in all cases, at least on common architectures */
994 /* or when using a recent enough gcc version (>= 4.6) */
995#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
996 return 0x44;
997#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
998 return 0x44;
999#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1000 return 0x11;
1001#else
1002 union
1003 {
1004 uint32_t i;
1005 uint8_t c;
1006 } u = { 0x11223344 };
1007 return u.c;
1008#endif
895} 1009}
896 1010
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1011ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1012ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1013ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
930 } 1044 }
931#else 1045#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1046 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif 1047#endif
934 1048
1049/*******************************************************************************/
1050/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1051
1052/* basically, everything uses "ieee pure-endian" floating point numbers */
1053/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1054#if 0 \
1055 || __i386 || __i386__ \
1056 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1057 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1058 || defined __arm__ && defined __ARM_EABI__ \
1059 || defined __s390__ || defined __s390x__ \
1060 || defined __mips__ \
1061 || defined __alpha__ \
1062 || defined __hppa__ \
1063 || defined __ia64__ \
1064 || defined __m68k__ \
1065 || defined __m88k__ \
1066 || defined __sh__ \
1067 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1068 #define ECB_STDFP 1
1069 #include <string.h> /* for memcpy */
1070#else
1071 #define ECB_STDFP 0
1072 #include <math.h> /* for frexp*, ldexp* */
1073#endif
1074
1075#ifndef ECB_NO_LIBM
1076
1077 /* convert a float to ieee single/binary32 */
1078 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1079 ecb_function_ uint32_t
1080 ecb_float_to_binary32 (float x)
1081 {
1082 uint32_t r;
1083
1084 #if ECB_STDFP
1085 memcpy (&r, &x, 4);
1086 #else
1087 /* slow emulation, works for anything but -0 */
1088 uint32_t m;
1089 int e;
1090
1091 if (x == 0e0f ) return 0x00000000U;
1092 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1093 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1094 if (x != x ) return 0x7fbfffffU;
1095
1096 m = frexpf (x, &e) * 0x1000000U;
1097
1098 r = m & 0x80000000U;
1099
1100 if (r)
1101 m = -m;
1102
1103 if (e <= -126)
1104 {
1105 m &= 0xffffffU;
1106 m >>= (-125 - e);
1107 e = -126;
1108 }
1109
1110 r |= (e + 126) << 23;
1111 r |= m & 0x7fffffU;
1112 #endif
1113
1114 return r;
1115 }
1116
1117 /* converts an ieee single/binary32 to a float */
1118 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1119 ecb_function_ float
1120 ecb_binary32_to_float (uint32_t x)
1121 {
1122 float r;
1123
1124 #if ECB_STDFP
1125 memcpy (&r, &x, 4);
1126 #else
1127 /* emulation, only works for normals and subnormals and +0 */
1128 int neg = x >> 31;
1129 int e = (x >> 23) & 0xffU;
1130
1131 x &= 0x7fffffU;
1132
1133 if (e)
1134 x |= 0x800000U;
1135 else
1136 e = 1;
1137
1138 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1139 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1140
1141 r = neg ? -r : r;
1142 #endif
1143
1144 return r;
1145 }
1146
1147 /* convert a double to ieee double/binary64 */
1148 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1149 ecb_function_ uint64_t
1150 ecb_double_to_binary64 (double x)
1151 {
1152 uint64_t r;
1153
1154 #if ECB_STDFP
1155 memcpy (&r, &x, 8);
1156 #else
1157 /* slow emulation, works for anything but -0 */
1158 uint64_t m;
1159 int e;
1160
1161 if (x == 0e0 ) return 0x0000000000000000U;
1162 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1163 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1164 if (x != x ) return 0X7ff7ffffffffffffU;
1165
1166 m = frexp (x, &e) * 0x20000000000000U;
1167
1168 r = m & 0x8000000000000000;;
1169
1170 if (r)
1171 m = -m;
1172
1173 if (e <= -1022)
1174 {
1175 m &= 0x1fffffffffffffU;
1176 m >>= (-1021 - e);
1177 e = -1022;
1178 }
1179
1180 r |= ((uint64_t)(e + 1022)) << 52;
1181 r |= m & 0xfffffffffffffU;
1182 #endif
1183
1184 return r;
1185 }
1186
1187 /* converts an ieee double/binary64 to a double */
1188 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1189 ecb_function_ double
1190 ecb_binary64_to_double (uint64_t x)
1191 {
1192 double r;
1193
1194 #if ECB_STDFP
1195 memcpy (&r, &x, 8);
1196 #else
1197 /* emulation, only works for normals and subnormals and +0 */
1198 int neg = x >> 63;
1199 int e = (x >> 52) & 0x7ffU;
1200
1201 x &= 0xfffffffffffffU;
1202
1203 if (e)
1204 x |= 0x10000000000000U;
1205 else
1206 e = 1;
1207
1208 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1209 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1210
1211 r = neg ? -r : r;
1212 #endif
1213
1214 return r;
1215 }
1216
1217#endif
1218
935#endif 1219#endif
936 1220
937/* ECB.H END */ 1221/* ECB.H END */
938 1222
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1223#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1105{ 1389{
1106 write (STDERR_FILENO, msg, strlen (msg)); 1390 write (STDERR_FILENO, msg, strlen (msg));
1107} 1391}
1108#endif 1392#endif
1109 1393
1110static void (*syserr_cb)(const char *msg); 1394static void (*syserr_cb)(const char *msg) EV_THROW;
1111 1395
1112void ecb_cold 1396void ecb_cold
1113ev_set_syserr_cb (void (*cb)(const char *msg)) 1397ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1114{ 1398{
1115 syserr_cb = cb; 1399 syserr_cb = cb;
1116} 1400}
1117 1401
1118static void noinline ecb_cold 1402static void noinline ecb_cold
1136 abort (); 1420 abort ();
1137 } 1421 }
1138} 1422}
1139 1423
1140static void * 1424static void *
1141ev_realloc_emul (void *ptr, long size) 1425ev_realloc_emul (void *ptr, long size) EV_THROW
1142{ 1426{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
1146 /* some systems, notably openbsd and darwin, fail to properly 1427 /* some systems, notably openbsd and darwin, fail to properly
1147 * implement realloc (x, 0) (as required by both ansi c-89 and 1428 * implement realloc (x, 0) (as required by both ansi c-89 and
1148 * the single unix specification, so work around them here. 1429 * the single unix specification, so work around them here.
1430 * recently, also (at least) fedora and debian started breaking it,
1431 * despite documenting it otherwise.
1149 */ 1432 */
1150 1433
1151 if (size) 1434 if (size)
1152 return realloc (ptr, size); 1435 return realloc (ptr, size);
1153 1436
1154 free (ptr); 1437 free (ptr);
1155 return 0; 1438 return 0;
1156#endif
1157} 1439}
1158 1440
1159static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1441static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1160 1442
1161void ecb_cold 1443void ecb_cold
1162ev_set_allocator (void *(*cb)(void *ptr, long size)) 1444ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1163{ 1445{
1164 alloc = cb; 1446 alloc = cb;
1165} 1447}
1166 1448
1167inline_speed void * 1449inline_speed void *
1284 1566
1285/*****************************************************************************/ 1567/*****************************************************************************/
1286 1568
1287#ifndef EV_HAVE_EV_TIME 1569#ifndef EV_HAVE_EV_TIME
1288ev_tstamp 1570ev_tstamp
1289ev_time (void) 1571ev_time (void) EV_THROW
1290{ 1572{
1291#if EV_USE_REALTIME 1573#if EV_USE_REALTIME
1292 if (expect_true (have_realtime)) 1574 if (expect_true (have_realtime))
1293 { 1575 {
1294 struct timespec ts; 1576 struct timespec ts;
1318 return ev_time (); 1600 return ev_time ();
1319} 1601}
1320 1602
1321#if EV_MULTIPLICITY 1603#if EV_MULTIPLICITY
1322ev_tstamp 1604ev_tstamp
1323ev_now (EV_P) 1605ev_now (EV_P) EV_THROW
1324{ 1606{
1325 return ev_rt_now; 1607 return ev_rt_now;
1326} 1608}
1327#endif 1609#endif
1328 1610
1329void 1611void
1330ev_sleep (ev_tstamp delay) 1612ev_sleep (ev_tstamp delay) EV_THROW
1331{ 1613{
1332 if (delay > 0.) 1614 if (delay > 0.)
1333 { 1615 {
1334#if EV_USE_NANOSLEEP 1616#if EV_USE_NANOSLEEP
1335 struct timespec ts; 1617 struct timespec ts;
1416pendingcb (EV_P_ ev_prepare *w, int revents) 1698pendingcb (EV_P_ ev_prepare *w, int revents)
1417{ 1699{
1418} 1700}
1419 1701
1420void noinline 1702void noinline
1421ev_feed_event (EV_P_ void *w, int revents) 1703ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1422{ 1704{
1423 W w_ = (W)w; 1705 W w_ = (W)w;
1424 int pri = ABSPRI (w_); 1706 int pri = ABSPRI (w_);
1425 1707
1426 if (expect_false (w_->pending)) 1708 if (expect_false (w_->pending))
1430 w_->pending = ++pendingcnt [pri]; 1712 w_->pending = ++pendingcnt [pri];
1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1713 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1432 pendings [pri][w_->pending - 1].w = w_; 1714 pendings [pri][w_->pending - 1].w = w_;
1433 pendings [pri][w_->pending - 1].events = revents; 1715 pendings [pri][w_->pending - 1].events = revents;
1434 } 1716 }
1717
1718 pendingpri = NUMPRI - 1;
1435} 1719}
1436 1720
1437inline_speed void 1721inline_speed void
1438feed_reverse (EV_P_ W w) 1722feed_reverse (EV_P_ W w)
1439{ 1723{
1485 if (expect_true (!anfd->reify)) 1769 if (expect_true (!anfd->reify))
1486 fd_event_nocheck (EV_A_ fd, revents); 1770 fd_event_nocheck (EV_A_ fd, revents);
1487} 1771}
1488 1772
1489void 1773void
1490ev_feed_fd_event (EV_P_ int fd, int revents) 1774ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1491{ 1775{
1492 if (fd >= 0 && fd < anfdmax) 1776 if (fd >= 0 && fd < anfdmax)
1493 fd_event_nocheck (EV_A_ fd, revents); 1777 fd_event_nocheck (EV_A_ fd, revents);
1494} 1778}
1495 1779
1814static void noinline ecb_cold 2098static void noinline ecb_cold
1815evpipe_init (EV_P) 2099evpipe_init (EV_P)
1816{ 2100{
1817 if (!ev_is_active (&pipe_w)) 2101 if (!ev_is_active (&pipe_w))
1818 { 2102 {
2103 int fds [2];
2104
1819# if EV_USE_EVENTFD 2105# if EV_USE_EVENTFD
2106 fds [0] = -1;
1820 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2107 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1821 if (evfd < 0 && errno == EINVAL) 2108 if (fds [1] < 0 && errno == EINVAL)
1822 evfd = eventfd (0, 0); 2109 fds [1] = eventfd (0, 0);
1823 2110
1824 if (evfd >= 0) 2111 if (fds [1] < 0)
2112# endif
1825 { 2113 {
2114 while (pipe (fds))
2115 ev_syserr ("(libev) error creating signal/async pipe");
2116
2117 fd_intern (fds [0]);
2118 }
2119
1826 evpipe [0] = -1; 2120 evpipe [0] = fds [0];
1827 fd_intern (evfd); /* doing it twice doesn't hurt */ 2121
1828 ev_io_set (&pipe_w, evfd, EV_READ); 2122 if (evpipe [1] < 0)
2123 evpipe [1] = fds [1]; /* first call, set write fd */
2124 else
2125 {
2126 /* on subsequent calls, do not change evpipe [1] */
2127 /* so that evpipe_write can always rely on its value. */
2128 /* this branch does not do anything sensible on windows, */
2129 /* so must not be executed on windows */
2130
2131 dup2 (fds [1], evpipe [1]);
2132 close (fds [1]);
2133 }
2134
2135 fd_intern (evpipe [1]);
2136
2137 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2138 ev_io_start (EV_A_ &pipe_w);
2139 ev_unref (EV_A); /* watcher should not keep loop alive */
2140 }
2141}
2142
2143inline_speed void
2144evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2145{
2146 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2147
2148 if (expect_true (*flag))
2149 return;
2150
2151 *flag = 1;
2152 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2153
2154 pipe_write_skipped = 1;
2155
2156 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2157
2158 if (pipe_write_wanted)
2159 {
2160 int old_errno;
2161
2162 pipe_write_skipped = 0;
2163 ECB_MEMORY_FENCE_RELEASE;
2164
2165 old_errno = errno; /* save errno because write will clobber it */
2166
2167#if EV_USE_EVENTFD
2168 if (evpipe [0] < 0)
2169 {
2170 uint64_t counter = 1;
2171 write (evpipe [1], &counter, sizeof (uint64_t));
1829 } 2172 }
1830 else 2173 else
1831# endif 2174#endif
1832 { 2175 {
1833 while (pipe (evpipe)) 2176#ifdef _WIN32
1834 ev_syserr ("(libev) error creating signal/async pipe"); 2177 WSABUF buf;
1835 2178 DWORD sent;
1836 fd_intern (evpipe [0]); 2179 buf.buf = &buf;
1837 fd_intern (evpipe [1]); 2180 buf.len = 1;
1838 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2181 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1839 } 2182#else
1840
1841 ev_io_start (EV_A_ &pipe_w);
1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1843 }
1844}
1845
1846inline_speed void
1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1848{
1849 if (expect_true (*flag))
1850 return;
1851
1852 *flag = 1;
1853
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1866 old_errno = errno; /* save errno because write will clobber it */
1867
1868#if EV_USE_EVENTFD
1869 if (evfd >= 0)
1870 {
1871 uint64_t counter = 1;
1872 write (evfd, &counter, sizeof (uint64_t));
1873 }
1874 else
1875#endif
1876 {
1877 /* win32 people keep sending patches that change this write() to send() */
1878 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1879 /* so when you think this write should be a send instead, please find out */
1880 /* where your send() is from - it's definitely not the microsoft send, and */
1881 /* tell me. thank you. */
1882 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883 /* check the ev documentation on how to use this flag */
1884 write (evpipe [1], &(evpipe [1]), 1); 2183 write (evpipe [1], &(evpipe [1]), 1);
2184#endif
1885 } 2185 }
1886 2186
1887 errno = old_errno; 2187 errno = old_errno;
1888 } 2188 }
1889} 2189}
1896 int i; 2196 int i;
1897 2197
1898 if (revents & EV_READ) 2198 if (revents & EV_READ)
1899 { 2199 {
1900#if EV_USE_EVENTFD 2200#if EV_USE_EVENTFD
1901 if (evfd >= 0) 2201 if (evpipe [0] < 0)
1902 { 2202 {
1903 uint64_t counter; 2203 uint64_t counter;
1904 read (evfd, &counter, sizeof (uint64_t)); 2204 read (evpipe [1], &counter, sizeof (uint64_t));
1905 } 2205 }
1906 else 2206 else
1907#endif 2207#endif
1908 { 2208 {
1909 char dummy; 2209 char dummy[4];
1910 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2210#ifdef _WIN32
2211 WSABUF buf;
2212 DWORD recvd;
2213 DWORD flags = 0;
2214 buf.buf = dummy;
2215 buf.len = sizeof (dummy);
2216 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2217#else
1911 read (evpipe [0], &dummy, 1); 2218 read (evpipe [0], &dummy, sizeof (dummy));
2219#endif
1912 } 2220 }
1913 } 2221 }
1914 2222
1915 pipe_write_skipped = 0; 2223 pipe_write_skipped = 0;
2224
2225 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1916 2226
1917#if EV_SIGNAL_ENABLE 2227#if EV_SIGNAL_ENABLE
1918 if (sig_pending) 2228 if (sig_pending)
1919 { 2229 {
1920 sig_pending = 0; 2230 sig_pending = 0;
2231
2232 ECB_MEMORY_FENCE;
1921 2233
1922 for (i = EV_NSIG - 1; i--; ) 2234 for (i = EV_NSIG - 1; i--; )
1923 if (expect_false (signals [i].pending)) 2235 if (expect_false (signals [i].pending))
1924 ev_feed_signal_event (EV_A_ i + 1); 2236 ev_feed_signal_event (EV_A_ i + 1);
1925 } 2237 }
1927 2239
1928#if EV_ASYNC_ENABLE 2240#if EV_ASYNC_ENABLE
1929 if (async_pending) 2241 if (async_pending)
1930 { 2242 {
1931 async_pending = 0; 2243 async_pending = 0;
2244
2245 ECB_MEMORY_FENCE;
1932 2246
1933 for (i = asynccnt; i--; ) 2247 for (i = asynccnt; i--; )
1934 if (asyncs [i]->sent) 2248 if (asyncs [i]->sent)
1935 { 2249 {
1936 asyncs [i]->sent = 0; 2250 asyncs [i]->sent = 0;
2251 ECB_MEMORY_FENCE_RELEASE;
1937 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2252 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1938 } 2253 }
1939 } 2254 }
1940#endif 2255#endif
1941} 2256}
1942 2257
1943/*****************************************************************************/ 2258/*****************************************************************************/
1944 2259
1945void 2260void
1946ev_feed_signal (int signum) 2261ev_feed_signal (int signum) EV_THROW
1947{ 2262{
1948#if EV_MULTIPLICITY 2263#if EV_MULTIPLICITY
2264 EV_P;
2265 ECB_MEMORY_FENCE_ACQUIRE;
1949 EV_P = signals [signum - 1].loop; 2266 EV_A = signals [signum - 1].loop;
1950 2267
1951 if (!EV_A) 2268 if (!EV_A)
1952 return; 2269 return;
1953#endif 2270#endif
1954 2271
1955 if (!ev_active (&pipe_w))
1956 return;
1957
1958 signals [signum - 1].pending = 1; 2272 signals [signum - 1].pending = 1;
1959 evpipe_write (EV_A_ &sig_pending); 2273 evpipe_write (EV_A_ &sig_pending);
1960} 2274}
1961 2275
1962static void 2276static void
1968 2282
1969 ev_feed_signal (signum); 2283 ev_feed_signal (signum);
1970} 2284}
1971 2285
1972void noinline 2286void noinline
1973ev_feed_signal_event (EV_P_ int signum) 2287ev_feed_signal_event (EV_P_ int signum) EV_THROW
1974{ 2288{
1975 WL w; 2289 WL w;
1976 2290
1977 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2291 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1978 return; 2292 return;
1979 2293
1980 --signum; 2294 --signum;
1981 2295
1982#if EV_MULTIPLICITY 2296#if EV_MULTIPLICITY
1986 if (expect_false (signals [signum].loop != EV_A)) 2300 if (expect_false (signals [signum].loop != EV_A))
1987 return; 2301 return;
1988#endif 2302#endif
1989 2303
1990 signals [signum].pending = 0; 2304 signals [signum].pending = 0;
2305 ECB_MEMORY_FENCE_RELEASE;
1991 2306
1992 for (w = signals [signum].head; w; w = w->next) 2307 for (w = signals [signum].head; w; w = w->next)
1993 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2308 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1994} 2309}
1995 2310
2094#if EV_USE_SELECT 2409#if EV_USE_SELECT
2095# include "ev_select.c" 2410# include "ev_select.c"
2096#endif 2411#endif
2097 2412
2098int ecb_cold 2413int ecb_cold
2099ev_version_major (void) 2414ev_version_major (void) EV_THROW
2100{ 2415{
2101 return EV_VERSION_MAJOR; 2416 return EV_VERSION_MAJOR;
2102} 2417}
2103 2418
2104int ecb_cold 2419int ecb_cold
2105ev_version_minor (void) 2420ev_version_minor (void) EV_THROW
2106{ 2421{
2107 return EV_VERSION_MINOR; 2422 return EV_VERSION_MINOR;
2108} 2423}
2109 2424
2110/* return true if we are running with elevated privileges and should ignore env variables */ 2425/* return true if we are running with elevated privileges and should ignore env variables */
2118 || getgid () != getegid (); 2433 || getgid () != getegid ();
2119#endif 2434#endif
2120} 2435}
2121 2436
2122unsigned int ecb_cold 2437unsigned int ecb_cold
2123ev_supported_backends (void) 2438ev_supported_backends (void) EV_THROW
2124{ 2439{
2125 unsigned int flags = 0; 2440 unsigned int flags = 0;
2126 2441
2127 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2442 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2128 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2443 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
2132 2447
2133 return flags; 2448 return flags;
2134} 2449}
2135 2450
2136unsigned int ecb_cold 2451unsigned int ecb_cold
2137ev_recommended_backends (void) 2452ev_recommended_backends (void) EV_THROW
2138{ 2453{
2139 unsigned int flags = ev_supported_backends (); 2454 unsigned int flags = ev_supported_backends ();
2140 2455
2141#ifndef __NetBSD__ 2456#ifndef __NetBSD__
2142 /* kqueue is borked on everything but netbsd apparently */ 2457 /* kqueue is borked on everything but netbsd apparently */
2154 2469
2155 return flags; 2470 return flags;
2156} 2471}
2157 2472
2158unsigned int ecb_cold 2473unsigned int ecb_cold
2159ev_embeddable_backends (void) 2474ev_embeddable_backends (void) EV_THROW
2160{ 2475{
2161 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2476 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2162 2477
2163 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2478 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2164 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2479 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2166 2481
2167 return flags; 2482 return flags;
2168} 2483}
2169 2484
2170unsigned int 2485unsigned int
2171ev_backend (EV_P) 2486ev_backend (EV_P) EV_THROW
2172{ 2487{
2173 return backend; 2488 return backend;
2174} 2489}
2175 2490
2176#if EV_FEATURE_API 2491#if EV_FEATURE_API
2177unsigned int 2492unsigned int
2178ev_iteration (EV_P) 2493ev_iteration (EV_P) EV_THROW
2179{ 2494{
2180 return loop_count; 2495 return loop_count;
2181} 2496}
2182 2497
2183unsigned int 2498unsigned int
2184ev_depth (EV_P) 2499ev_depth (EV_P) EV_THROW
2185{ 2500{
2186 return loop_depth; 2501 return loop_depth;
2187} 2502}
2188 2503
2189void 2504void
2190ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2505ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2191{ 2506{
2192 io_blocktime = interval; 2507 io_blocktime = interval;
2193} 2508}
2194 2509
2195void 2510void
2196ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2511ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2197{ 2512{
2198 timeout_blocktime = interval; 2513 timeout_blocktime = interval;
2199} 2514}
2200 2515
2201void 2516void
2202ev_set_userdata (EV_P_ void *data) 2517ev_set_userdata (EV_P_ void *data) EV_THROW
2203{ 2518{
2204 userdata = data; 2519 userdata = data;
2205} 2520}
2206 2521
2207void * 2522void *
2208ev_userdata (EV_P) 2523ev_userdata (EV_P) EV_THROW
2209{ 2524{
2210 return userdata; 2525 return userdata;
2211} 2526}
2212 2527
2213void 2528void
2214ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2529ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2215{ 2530{
2216 invoke_cb = invoke_pending_cb; 2531 invoke_cb = invoke_pending_cb;
2217} 2532}
2218 2533
2219void 2534void
2220ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2535ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2221{ 2536{
2222 release_cb = release; 2537 release_cb = release;
2223 acquire_cb = acquire; 2538 acquire_cb = acquire;
2224} 2539}
2225#endif 2540#endif
2226 2541
2227/* initialise a loop structure, must be zero-initialised */ 2542/* initialise a loop structure, must be zero-initialised */
2228static void noinline ecb_cold 2543static void noinline ecb_cold
2229loop_init (EV_P_ unsigned int flags) 2544loop_init (EV_P_ unsigned int flags) EV_THROW
2230{ 2545{
2231 if (!backend) 2546 if (!backend)
2232 { 2547 {
2233 origflags = flags; 2548 origflags = flags;
2234 2549
2279#if EV_ASYNC_ENABLE 2594#if EV_ASYNC_ENABLE
2280 async_pending = 0; 2595 async_pending = 0;
2281#endif 2596#endif
2282 pipe_write_skipped = 0; 2597 pipe_write_skipped = 0;
2283 pipe_write_wanted = 0; 2598 pipe_write_wanted = 0;
2599 evpipe [0] = -1;
2600 evpipe [1] = -1;
2284#if EV_USE_INOTIFY 2601#if EV_USE_INOTIFY
2285 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2602 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2286#endif 2603#endif
2287#if EV_USE_SIGNALFD 2604#if EV_USE_SIGNALFD
2288 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2605 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2339 EV_INVOKE_PENDING; 2656 EV_INVOKE_PENDING;
2340 } 2657 }
2341#endif 2658#endif
2342 2659
2343#if EV_CHILD_ENABLE 2660#if EV_CHILD_ENABLE
2344 if (ev_is_active (&childev)) 2661 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2345 { 2662 {
2346 ev_ref (EV_A); /* child watcher */ 2663 ev_ref (EV_A); /* child watcher */
2347 ev_signal_stop (EV_A_ &childev); 2664 ev_signal_stop (EV_A_ &childev);
2348 } 2665 }
2349#endif 2666#endif
2351 if (ev_is_active (&pipe_w)) 2668 if (ev_is_active (&pipe_w))
2352 { 2669 {
2353 /*ev_ref (EV_A);*/ 2670 /*ev_ref (EV_A);*/
2354 /*ev_io_stop (EV_A_ &pipe_w);*/ 2671 /*ev_io_stop (EV_A_ &pipe_w);*/
2355 2672
2356#if EV_USE_EVENTFD
2357 if (evfd >= 0)
2358 close (evfd);
2359#endif
2360
2361 if (evpipe [0] >= 0)
2362 {
2363 EV_WIN32_CLOSE_FD (evpipe [0]); 2673 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2364 EV_WIN32_CLOSE_FD (evpipe [1]); 2674 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2365 }
2366 } 2675 }
2367 2676
2368#if EV_USE_SIGNALFD 2677#if EV_USE_SIGNALFD
2369 if (ev_is_active (&sigfd_w)) 2678 if (ev_is_active (&sigfd_w))
2370 close (sigfd); 2679 close (sigfd);
2456#endif 2765#endif
2457#if EV_USE_INOTIFY 2766#if EV_USE_INOTIFY
2458 infy_fork (EV_A); 2767 infy_fork (EV_A);
2459#endif 2768#endif
2460 2769
2770#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2461 if (ev_is_active (&pipe_w)) 2771 if (ev_is_active (&pipe_w))
2462 { 2772 {
2463 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2773 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2464 2774
2465 ev_ref (EV_A); 2775 ev_ref (EV_A);
2466 ev_io_stop (EV_A_ &pipe_w); 2776 ev_io_stop (EV_A_ &pipe_w);
2467 2777
2468#if EV_USE_EVENTFD
2469 if (evfd >= 0)
2470 close (evfd);
2471#endif
2472
2473 if (evpipe [0] >= 0) 2778 if (evpipe [0] >= 0)
2474 {
2475 EV_WIN32_CLOSE_FD (evpipe [0]); 2779 EV_WIN32_CLOSE_FD (evpipe [0]);
2476 EV_WIN32_CLOSE_FD (evpipe [1]);
2477 }
2478 2780
2479#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2480 evpipe_init (EV_A); 2781 evpipe_init (EV_A);
2481 /* now iterate over everything, in case we missed something */ 2782 /* iterate over everything, in case we missed something before */
2482 pipecb (EV_A_ &pipe_w, EV_READ); 2783 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2483#endif
2484 } 2784 }
2785#endif
2485 2786
2486 postfork = 0; 2787 postfork = 0;
2487} 2788}
2488 2789
2489#if EV_MULTIPLICITY 2790#if EV_MULTIPLICITY
2490 2791
2491struct ev_loop * ecb_cold 2792struct ev_loop * ecb_cold
2492ev_loop_new (unsigned int flags) 2793ev_loop_new (unsigned int flags) EV_THROW
2493{ 2794{
2494 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2795 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2495 2796
2496 memset (EV_A, 0, sizeof (struct ev_loop)); 2797 memset (EV_A, 0, sizeof (struct ev_loop));
2497 loop_init (EV_A_ flags); 2798 loop_init (EV_A_ flags);
2541} 2842}
2542#endif 2843#endif
2543 2844
2544#if EV_FEATURE_API 2845#if EV_FEATURE_API
2545void ecb_cold 2846void ecb_cold
2546ev_verify (EV_P) 2847ev_verify (EV_P) EV_THROW
2547{ 2848{
2548#if EV_VERIFY 2849#if EV_VERIFY
2549 int i; 2850 int i;
2550 WL w; 2851 WL w, w2;
2551 2852
2552 assert (activecnt >= -1); 2853 assert (activecnt >= -1);
2553 2854
2554 assert (fdchangemax >= fdchangecnt); 2855 assert (fdchangemax >= fdchangecnt);
2555 for (i = 0; i < fdchangecnt; ++i) 2856 for (i = 0; i < fdchangecnt; ++i)
2556 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2857 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2557 2858
2558 assert (anfdmax >= 0); 2859 assert (anfdmax >= 0);
2559 for (i = 0; i < anfdmax; ++i) 2860 for (i = 0; i < anfdmax; ++i)
2861 {
2862 int j = 0;
2863
2560 for (w = anfds [i].head; w; w = w->next) 2864 for (w = w2 = anfds [i].head; w; w = w->next)
2561 { 2865 {
2562 verify_watcher (EV_A_ (W)w); 2866 verify_watcher (EV_A_ (W)w);
2867
2868 if (j++ & 1)
2869 {
2870 assert (("libev: io watcher list contains a loop", w != w2));
2871 w2 = w2->next;
2872 }
2873
2563 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2874 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2564 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2875 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2565 } 2876 }
2877 }
2566 2878
2567 assert (timermax >= timercnt); 2879 assert (timermax >= timercnt);
2568 verify_heap (EV_A_ timers, timercnt); 2880 verify_heap (EV_A_ timers, timercnt);
2569 2881
2570#if EV_PERIODIC_ENABLE 2882#if EV_PERIODIC_ENABLE
2620#if EV_MULTIPLICITY 2932#if EV_MULTIPLICITY
2621struct ev_loop * ecb_cold 2933struct ev_loop * ecb_cold
2622#else 2934#else
2623int 2935int
2624#endif 2936#endif
2625ev_default_loop (unsigned int flags) 2937ev_default_loop (unsigned int flags) EV_THROW
2626{ 2938{
2627 if (!ev_default_loop_ptr) 2939 if (!ev_default_loop_ptr)
2628 { 2940 {
2629#if EV_MULTIPLICITY 2941#if EV_MULTIPLICITY
2630 EV_P = ev_default_loop_ptr = &default_loop_struct; 2942 EV_P = ev_default_loop_ptr = &default_loop_struct;
2649 2961
2650 return ev_default_loop_ptr; 2962 return ev_default_loop_ptr;
2651} 2963}
2652 2964
2653void 2965void
2654ev_loop_fork (EV_P) 2966ev_loop_fork (EV_P) EV_THROW
2655{ 2967{
2656 postfork = 1; /* must be in line with ev_default_fork */ 2968 postfork = 1;
2657} 2969}
2658 2970
2659/*****************************************************************************/ 2971/*****************************************************************************/
2660 2972
2661void 2973void
2663{ 2975{
2664 EV_CB_INVOKE ((W)w, revents); 2976 EV_CB_INVOKE ((W)w, revents);
2665} 2977}
2666 2978
2667unsigned int 2979unsigned int
2668ev_pending_count (EV_P) 2980ev_pending_count (EV_P) EV_THROW
2669{ 2981{
2670 int pri; 2982 int pri;
2671 unsigned int count = 0; 2983 unsigned int count = 0;
2672 2984
2673 for (pri = NUMPRI; pri--; ) 2985 for (pri = NUMPRI; pri--; )
2677} 2989}
2678 2990
2679void noinline 2991void noinline
2680ev_invoke_pending (EV_P) 2992ev_invoke_pending (EV_P)
2681{ 2993{
2682 int pri; 2994 pendingpri = NUMPRI;
2683 2995
2684 for (pri = NUMPRI; pri--; ) 2996 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2997 {
2998 --pendingpri;
2999
2685 while (pendingcnt [pri]) 3000 while (pendingcnt [pendingpri])
2686 { 3001 {
2687 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3002 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2688 3003
2689 p->w->pending = 0; 3004 p->w->pending = 0;
2690 EV_CB_INVOKE (p->w, p->events); 3005 EV_CB_INVOKE (p->w, p->events);
2691 EV_FREQUENT_CHECK; 3006 EV_FREQUENT_CHECK;
2692 } 3007 }
3008 }
2693} 3009}
2694 3010
2695#if EV_IDLE_ENABLE 3011#if EV_IDLE_ENABLE
2696/* make idle watchers pending. this handles the "call-idle */ 3012/* make idle watchers pending. this handles the "call-idle */
2697/* only when higher priorities are idle" logic */ 3013/* only when higher priorities are idle" logic */
2787{ 3103{
2788 EV_FREQUENT_CHECK; 3104 EV_FREQUENT_CHECK;
2789 3105
2790 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3106 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2791 { 3107 {
2792 int feed_count = 0;
2793
2794 do 3108 do
2795 { 3109 {
2796 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3110 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2797 3111
2798 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3112 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
3057 backend_poll (EV_A_ waittime); 3371 backend_poll (EV_A_ waittime);
3058 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3372 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059 3373
3060 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3374 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061 3375
3376 ECB_MEMORY_FENCE_ACQUIRE;
3062 if (pipe_write_skipped) 3377 if (pipe_write_skipped)
3063 { 3378 {
3064 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3379 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3380 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066 } 3381 }
3104 3419
3105 return activecnt; 3420 return activecnt;
3106} 3421}
3107 3422
3108void 3423void
3109ev_break (EV_P_ int how) 3424ev_break (EV_P_ int how) EV_THROW
3110{ 3425{
3111 loop_done = how; 3426 loop_done = how;
3112} 3427}
3113 3428
3114void 3429void
3115ev_ref (EV_P) 3430ev_ref (EV_P) EV_THROW
3116{ 3431{
3117 ++activecnt; 3432 ++activecnt;
3118} 3433}
3119 3434
3120void 3435void
3121ev_unref (EV_P) 3436ev_unref (EV_P) EV_THROW
3122{ 3437{
3123 --activecnt; 3438 --activecnt;
3124} 3439}
3125 3440
3126void 3441void
3127ev_now_update (EV_P) 3442ev_now_update (EV_P) EV_THROW
3128{ 3443{
3129 time_update (EV_A_ 1e100); 3444 time_update (EV_A_ 1e100);
3130} 3445}
3131 3446
3132void 3447void
3133ev_suspend (EV_P) 3448ev_suspend (EV_P) EV_THROW
3134{ 3449{
3135 ev_now_update (EV_A); 3450 ev_now_update (EV_A);
3136} 3451}
3137 3452
3138void 3453void
3139ev_resume (EV_P) 3454ev_resume (EV_P) EV_THROW
3140{ 3455{
3141 ev_tstamp mn_prev = mn_now; 3456 ev_tstamp mn_prev = mn_now;
3142 3457
3143 ev_now_update (EV_A); 3458 ev_now_update (EV_A);
3144 timers_reschedule (EV_A_ mn_now - mn_prev); 3459 timers_reschedule (EV_A_ mn_now - mn_prev);
3183 w->pending = 0; 3498 w->pending = 0;
3184 } 3499 }
3185} 3500}
3186 3501
3187int 3502int
3188ev_clear_pending (EV_P_ void *w) 3503ev_clear_pending (EV_P_ void *w) EV_THROW
3189{ 3504{
3190 W w_ = (W)w; 3505 W w_ = (W)w;
3191 int pending = w_->pending; 3506 int pending = w_->pending;
3192 3507
3193 if (expect_true (pending)) 3508 if (expect_true (pending))
3226} 3541}
3227 3542
3228/*****************************************************************************/ 3543/*****************************************************************************/
3229 3544
3230void noinline 3545void noinline
3231ev_io_start (EV_P_ ev_io *w) 3546ev_io_start (EV_P_ ev_io *w) EV_THROW
3232{ 3547{
3233 int fd = w->fd; 3548 int fd = w->fd;
3234 3549
3235 if (expect_false (ev_is_active (w))) 3550 if (expect_false (ev_is_active (w)))
3236 return; 3551 return;
3242 3557
3243 ev_start (EV_A_ (W)w, 1); 3558 ev_start (EV_A_ (W)w, 1);
3244 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3559 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3245 wlist_add (&anfds[fd].head, (WL)w); 3560 wlist_add (&anfds[fd].head, (WL)w);
3246 3561
3562 /* common bug, apparently */
3563 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3564
3247 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3565 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3248 w->events &= ~EV__IOFDSET; 3566 w->events &= ~EV__IOFDSET;
3249 3567
3250 EV_FREQUENT_CHECK; 3568 EV_FREQUENT_CHECK;
3251} 3569}
3252 3570
3253void noinline 3571void noinline
3254ev_io_stop (EV_P_ ev_io *w) 3572ev_io_stop (EV_P_ ev_io *w) EV_THROW
3255{ 3573{
3256 clear_pending (EV_A_ (W)w); 3574 clear_pending (EV_A_ (W)w);
3257 if (expect_false (!ev_is_active (w))) 3575 if (expect_false (!ev_is_active (w)))
3258 return; 3576 return;
3259 3577
3268 3586
3269 EV_FREQUENT_CHECK; 3587 EV_FREQUENT_CHECK;
3270} 3588}
3271 3589
3272void noinline 3590void noinline
3273ev_timer_start (EV_P_ ev_timer *w) 3591ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3274{ 3592{
3275 if (expect_false (ev_is_active (w))) 3593 if (expect_false (ev_is_active (w)))
3276 return; 3594 return;
3277 3595
3278 ev_at (w) += mn_now; 3596 ev_at (w) += mn_now;
3292 3610
3293 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3611 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3294} 3612}
3295 3613
3296void noinline 3614void noinline
3297ev_timer_stop (EV_P_ ev_timer *w) 3615ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3298{ 3616{
3299 clear_pending (EV_A_ (W)w); 3617 clear_pending (EV_A_ (W)w);
3300 if (expect_false (!ev_is_active (w))) 3618 if (expect_false (!ev_is_active (w)))
3301 return; 3619 return;
3302 3620
3322 3640
3323 EV_FREQUENT_CHECK; 3641 EV_FREQUENT_CHECK;
3324} 3642}
3325 3643
3326void noinline 3644void noinline
3327ev_timer_again (EV_P_ ev_timer *w) 3645ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3328{ 3646{
3329 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
3330 3648
3331 clear_pending (EV_A_ (W)w); 3649 clear_pending (EV_A_ (W)w);
3332 3650
3349 3667
3350 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
3351} 3669}
3352 3670
3353ev_tstamp 3671ev_tstamp
3354ev_timer_remaining (EV_P_ ev_timer *w) 3672ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3355{ 3673{
3356 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3674 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3357} 3675}
3358 3676
3359#if EV_PERIODIC_ENABLE 3677#if EV_PERIODIC_ENABLE
3360void noinline 3678void noinline
3361ev_periodic_start (EV_P_ ev_periodic *w) 3679ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3362{ 3680{
3363 if (expect_false (ev_is_active (w))) 3681 if (expect_false (ev_is_active (w)))
3364 return; 3682 return;
3365 3683
3366 if (w->reschedule_cb) 3684 if (w->reschedule_cb)
3386 3704
3387 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3388} 3706}
3389 3707
3390void noinline 3708void noinline
3391ev_periodic_stop (EV_P_ ev_periodic *w) 3709ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3392{ 3710{
3393 clear_pending (EV_A_ (W)w); 3711 clear_pending (EV_A_ (W)w);
3394 if (expect_false (!ev_is_active (w))) 3712 if (expect_false (!ev_is_active (w)))
3395 return; 3713 return;
3396 3714
3414 3732
3415 EV_FREQUENT_CHECK; 3733 EV_FREQUENT_CHECK;
3416} 3734}
3417 3735
3418void noinline 3736void noinline
3419ev_periodic_again (EV_P_ ev_periodic *w) 3737ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3420{ 3738{
3421 /* TODO: use adjustheap and recalculation */ 3739 /* TODO: use adjustheap and recalculation */
3422 ev_periodic_stop (EV_A_ w); 3740 ev_periodic_stop (EV_A_ w);
3423 ev_periodic_start (EV_A_ w); 3741 ev_periodic_start (EV_A_ w);
3424} 3742}
3429#endif 3747#endif
3430 3748
3431#if EV_SIGNAL_ENABLE 3749#if EV_SIGNAL_ENABLE
3432 3750
3433void noinline 3751void noinline
3434ev_signal_start (EV_P_ ev_signal *w) 3752ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3435{ 3753{
3436 if (expect_false (ev_is_active (w))) 3754 if (expect_false (ev_is_active (w)))
3437 return; 3755 return;
3438 3756
3439 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3441#if EV_MULTIPLICITY 3759#if EV_MULTIPLICITY
3442 assert (("libev: a signal must not be attached to two different loops", 3760 assert (("libev: a signal must not be attached to two different loops",
3443 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3761 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3444 3762
3445 signals [w->signum - 1].loop = EV_A; 3763 signals [w->signum - 1].loop = EV_A;
3764 ECB_MEMORY_FENCE_RELEASE;
3446#endif 3765#endif
3447 3766
3448 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
3449 3768
3450#if EV_USE_SIGNALFD 3769#if EV_USE_SIGNALFD
3510 3829
3511 EV_FREQUENT_CHECK; 3830 EV_FREQUENT_CHECK;
3512} 3831}
3513 3832
3514void noinline 3833void noinline
3515ev_signal_stop (EV_P_ ev_signal *w) 3834ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3516{ 3835{
3517 clear_pending (EV_A_ (W)w); 3836 clear_pending (EV_A_ (W)w);
3518 if (expect_false (!ev_is_active (w))) 3837 if (expect_false (!ev_is_active (w)))
3519 return; 3838 return;
3520 3839
3551#endif 3870#endif
3552 3871
3553#if EV_CHILD_ENABLE 3872#if EV_CHILD_ENABLE
3554 3873
3555void 3874void
3556ev_child_start (EV_P_ ev_child *w) 3875ev_child_start (EV_P_ ev_child *w) EV_THROW
3557{ 3876{
3558#if EV_MULTIPLICITY 3877#if EV_MULTIPLICITY
3559 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3560#endif 3879#endif
3561 if (expect_false (ev_is_active (w))) 3880 if (expect_false (ev_is_active (w)))
3568 3887
3569 EV_FREQUENT_CHECK; 3888 EV_FREQUENT_CHECK;
3570} 3889}
3571 3890
3572void 3891void
3573ev_child_stop (EV_P_ ev_child *w) 3892ev_child_stop (EV_P_ ev_child *w) EV_THROW
3574{ 3893{
3575 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
3576 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
3577 return; 3896 return;
3578 3897
3605# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3606 3925
3607static void noinline 3926static void noinline
3608infy_add (EV_P_ ev_stat *w) 3927infy_add (EV_P_ ev_stat *w)
3609{ 3928{
3610 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); 3929 w->wd = inotify_add_watch (fs_fd, w->path,
3930 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3931 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3932 | IN_DONT_FOLLOW | IN_MASK_ADD);
3611 3933
3612 if (w->wd >= 0) 3934 if (w->wd >= 0)
3613 { 3935 {
3614 struct statfs sfs; 3936 struct statfs sfs;
3615 3937
3619 3941
3620 if (!fs_2625) 3942 if (!fs_2625)
3621 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3943 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622 else if (!statfs (w->path, &sfs) 3944 else if (!statfs (w->path, &sfs)
3623 && (sfs.f_type == 0x1373 /* devfs */ 3945 && (sfs.f_type == 0x1373 /* devfs */
3946 || sfs.f_type == 0x4006 /* fat */
3947 || sfs.f_type == 0x4d44 /* msdos */
3624 || sfs.f_type == 0xEF53 /* ext2/3 */ 3948 || sfs.f_type == 0xEF53 /* ext2/3 */
3949 || sfs.f_type == 0x72b6 /* jffs2 */
3950 || sfs.f_type == 0x858458f6 /* ramfs */
3951 || sfs.f_type == 0x5346544e /* ntfs */
3625 || sfs.f_type == 0x3153464a /* jfs */ 3952 || sfs.f_type == 0x3153464a /* jfs */
3953 || sfs.f_type == 0x9123683e /* btrfs */
3626 || sfs.f_type == 0x52654973 /* reiser3 */ 3954 || sfs.f_type == 0x52654973 /* reiser3 */
3627 || sfs.f_type == 0x01021994 /* tempfs */ 3955 || sfs.f_type == 0x01021994 /* tmpfs */
3628 || sfs.f_type == 0x58465342 /* xfs */)) 3956 || sfs.f_type == 0x58465342 /* xfs */))
3629 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3957 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630 else 3958 else
3631 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3959 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3632 } 3960 }
3830#else 4158#else
3831# define EV_LSTAT(p,b) lstat (p, b) 4159# define EV_LSTAT(p,b) lstat (p, b)
3832#endif 4160#endif
3833 4161
3834void 4162void
3835ev_stat_stat (EV_P_ ev_stat *w) 4163ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3836{ 4164{
3837 if (lstat (w->path, &w->attr) < 0) 4165 if (lstat (w->path, &w->attr) < 0)
3838 w->attr.st_nlink = 0; 4166 w->attr.st_nlink = 0;
3839 else if (!w->attr.st_nlink) 4167 else if (!w->attr.st_nlink)
3840 w->attr.st_nlink = 1; 4168 w->attr.st_nlink = 1;
3879 ev_feed_event (EV_A_ w, EV_STAT); 4207 ev_feed_event (EV_A_ w, EV_STAT);
3880 } 4208 }
3881} 4209}
3882 4210
3883void 4211void
3884ev_stat_start (EV_P_ ev_stat *w) 4212ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3885{ 4213{
3886 if (expect_false (ev_is_active (w))) 4214 if (expect_false (ev_is_active (w)))
3887 return; 4215 return;
3888 4216
3889 ev_stat_stat (EV_A_ w); 4217 ev_stat_stat (EV_A_ w);
3910 4238
3911 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
3912} 4240}
3913 4241
3914void 4242void
3915ev_stat_stop (EV_P_ ev_stat *w) 4243ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3916{ 4244{
3917 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
3918 if (expect_false (!ev_is_active (w))) 4246 if (expect_false (!ev_is_active (w)))
3919 return; 4247 return;
3920 4248
3936} 4264}
3937#endif 4265#endif
3938 4266
3939#if EV_IDLE_ENABLE 4267#if EV_IDLE_ENABLE
3940void 4268void
3941ev_idle_start (EV_P_ ev_idle *w) 4269ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3942{ 4270{
3943 if (expect_false (ev_is_active (w))) 4271 if (expect_false (ev_is_active (w)))
3944 return; 4272 return;
3945 4273
3946 pri_adjust (EV_A_ (W)w); 4274 pri_adjust (EV_A_ (W)w);
3959 4287
3960 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3961} 4289}
3962 4290
3963void 4291void
3964ev_idle_stop (EV_P_ ev_idle *w) 4292ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3965{ 4293{
3966 clear_pending (EV_A_ (W)w); 4294 clear_pending (EV_A_ (W)w);
3967 if (expect_false (!ev_is_active (w))) 4295 if (expect_false (!ev_is_active (w)))
3968 return; 4296 return;
3969 4297
3983} 4311}
3984#endif 4312#endif
3985 4313
3986#if EV_PREPARE_ENABLE 4314#if EV_PREPARE_ENABLE
3987void 4315void
3988ev_prepare_start (EV_P_ ev_prepare *w) 4316ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3989{ 4317{
3990 if (expect_false (ev_is_active (w))) 4318 if (expect_false (ev_is_active (w)))
3991 return; 4319 return;
3992 4320
3993 EV_FREQUENT_CHECK; 4321 EV_FREQUENT_CHECK;
3998 4326
3999 EV_FREQUENT_CHECK; 4327 EV_FREQUENT_CHECK;
4000} 4328}
4001 4329
4002void 4330void
4003ev_prepare_stop (EV_P_ ev_prepare *w) 4331ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
4004{ 4332{
4005 clear_pending (EV_A_ (W)w); 4333 clear_pending (EV_A_ (W)w);
4006 if (expect_false (!ev_is_active (w))) 4334 if (expect_false (!ev_is_active (w)))
4007 return; 4335 return;
4008 4336
4021} 4349}
4022#endif 4350#endif
4023 4351
4024#if EV_CHECK_ENABLE 4352#if EV_CHECK_ENABLE
4025void 4353void
4026ev_check_start (EV_P_ ev_check *w) 4354ev_check_start (EV_P_ ev_check *w) EV_THROW
4027{ 4355{
4028 if (expect_false (ev_is_active (w))) 4356 if (expect_false (ev_is_active (w)))
4029 return; 4357 return;
4030 4358
4031 EV_FREQUENT_CHECK; 4359 EV_FREQUENT_CHECK;
4036 4364
4037 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
4038} 4366}
4039 4367
4040void 4368void
4041ev_check_stop (EV_P_ ev_check *w) 4369ev_check_stop (EV_P_ ev_check *w) EV_THROW
4042{ 4370{
4043 clear_pending (EV_A_ (W)w); 4371 clear_pending (EV_A_ (W)w);
4044 if (expect_false (!ev_is_active (w))) 4372 if (expect_false (!ev_is_active (w)))
4045 return; 4373 return;
4046 4374
4059} 4387}
4060#endif 4388#endif
4061 4389
4062#if EV_EMBED_ENABLE 4390#if EV_EMBED_ENABLE
4063void noinline 4391void noinline
4064ev_embed_sweep (EV_P_ ev_embed *w) 4392ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4065{ 4393{
4066 ev_run (w->other, EVRUN_NOWAIT); 4394 ev_run (w->other, EVRUN_NOWAIT);
4067} 4395}
4068 4396
4069static void 4397static void
4117 ev_idle_stop (EV_A_ idle); 4445 ev_idle_stop (EV_A_ idle);
4118} 4446}
4119#endif 4447#endif
4120 4448
4121void 4449void
4122ev_embed_start (EV_P_ ev_embed *w) 4450ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4123{ 4451{
4124 if (expect_false (ev_is_active (w))) 4452 if (expect_false (ev_is_active (w)))
4125 return; 4453 return;
4126 4454
4127 { 4455 {
4148 4476
4149 EV_FREQUENT_CHECK; 4477 EV_FREQUENT_CHECK;
4150} 4478}
4151 4479
4152void 4480void
4153ev_embed_stop (EV_P_ ev_embed *w) 4481ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4154{ 4482{
4155 clear_pending (EV_A_ (W)w); 4483 clear_pending (EV_A_ (W)w);
4156 if (expect_false (!ev_is_active (w))) 4484 if (expect_false (!ev_is_active (w)))
4157 return; 4485 return;
4158 4486
4168} 4496}
4169#endif 4497#endif
4170 4498
4171#if EV_FORK_ENABLE 4499#if EV_FORK_ENABLE
4172void 4500void
4173ev_fork_start (EV_P_ ev_fork *w) 4501ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4174{ 4502{
4175 if (expect_false (ev_is_active (w))) 4503 if (expect_false (ev_is_active (w)))
4176 return; 4504 return;
4177 4505
4178 EV_FREQUENT_CHECK; 4506 EV_FREQUENT_CHECK;
4183 4511
4184 EV_FREQUENT_CHECK; 4512 EV_FREQUENT_CHECK;
4185} 4513}
4186 4514
4187void 4515void
4188ev_fork_stop (EV_P_ ev_fork *w) 4516ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4189{ 4517{
4190 clear_pending (EV_A_ (W)w); 4518 clear_pending (EV_A_ (W)w);
4191 if (expect_false (!ev_is_active (w))) 4519 if (expect_false (!ev_is_active (w)))
4192 return; 4520 return;
4193 4521
4206} 4534}
4207#endif 4535#endif
4208 4536
4209#if EV_CLEANUP_ENABLE 4537#if EV_CLEANUP_ENABLE
4210void 4538void
4211ev_cleanup_start (EV_P_ ev_cleanup *w) 4539ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4212{ 4540{
4213 if (expect_false (ev_is_active (w))) 4541 if (expect_false (ev_is_active (w)))
4214 return; 4542 return;
4215 4543
4216 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
4223 ev_unref (EV_A); 4551 ev_unref (EV_A);
4224 EV_FREQUENT_CHECK; 4552 EV_FREQUENT_CHECK;
4225} 4553}
4226 4554
4227void 4555void
4228ev_cleanup_stop (EV_P_ ev_cleanup *w) 4556ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4229{ 4557{
4230 clear_pending (EV_A_ (W)w); 4558 clear_pending (EV_A_ (W)w);
4231 if (expect_false (!ev_is_active (w))) 4559 if (expect_false (!ev_is_active (w)))
4232 return; 4560 return;
4233 4561
4247} 4575}
4248#endif 4576#endif
4249 4577
4250#if EV_ASYNC_ENABLE 4578#if EV_ASYNC_ENABLE
4251void 4579void
4252ev_async_start (EV_P_ ev_async *w) 4580ev_async_start (EV_P_ ev_async *w) EV_THROW
4253{ 4581{
4254 if (expect_false (ev_is_active (w))) 4582 if (expect_false (ev_is_active (w)))
4255 return; 4583 return;
4256 4584
4257 w->sent = 0; 4585 w->sent = 0;
4266 4594
4267 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
4268} 4596}
4269 4597
4270void 4598void
4271ev_async_stop (EV_P_ ev_async *w) 4599ev_async_stop (EV_P_ ev_async *w) EV_THROW
4272{ 4600{
4273 clear_pending (EV_A_ (W)w); 4601 clear_pending (EV_A_ (W)w);
4274 if (expect_false (!ev_is_active (w))) 4602 if (expect_false (!ev_is_active (w)))
4275 return; 4603 return;
4276 4604
4287 4615
4288 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
4289} 4617}
4290 4618
4291void 4619void
4292ev_async_send (EV_P_ ev_async *w) 4620ev_async_send (EV_P_ ev_async *w) EV_THROW
4293{ 4621{
4294 w->sent = 1; 4622 w->sent = 1;
4295 evpipe_write (EV_A_ &async_pending); 4623 evpipe_write (EV_A_ &async_pending);
4296} 4624}
4297#endif 4625#endif
4334 4662
4335 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4663 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4336} 4664}
4337 4665
4338void 4666void
4339ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4667ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4340{ 4668{
4341 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4669 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4342 4670
4343 if (expect_false (!once)) 4671 if (expect_false (!once))
4344 { 4672 {
4366 4694
4367/*****************************************************************************/ 4695/*****************************************************************************/
4368 4696
4369#if EV_WALK_ENABLE 4697#if EV_WALK_ENABLE
4370void ecb_cold 4698void ecb_cold
4371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4699ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4372{ 4700{
4373 int i, j; 4701 int i, j;
4374 ev_watcher_list *wl, *wn; 4702 ev_watcher_list *wl, *wn;
4375 4703
4376 if (types & (EV_IO | EV_EMBED)) 4704 if (types & (EV_IO | EV_EMBED))

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