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Comparing libev/ev.c (file contents):
Revision 1.417 by root, Mon Apr 2 20:22:30 2012 UTC vs.
Revision 1.453 by root, Thu Feb 28 00:33:25 2013 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 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 *
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 0x00010002
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
528#endif 552#endif
529 553
530/* many compilers define _GNUC_ to some versions but then only implement 554/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 555 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 556 * causing enormous grief in return for some better fake benchmark numbers.
540 #else 564 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 565 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 566 #endif
543#endif 567#endif
544 568
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
570#define ECB_C99 (__STDC_VERSION__ >= 199901L)
571#define ECB_C11 (__STDC_VERSION__ >= 201112L)
572#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L)
574
575#if ECB_CPP
576 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END }
579#else
580 #define ECB_EXTERN_C extern
581 #define ECB_EXTERN_C_BEG
582 #define ECB_EXTERN_C_END
583#endif
584
545/*****************************************************************************/ 585/*****************************************************************************/
546 586
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 587/* 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 */ 588/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 589
550#if ECB_NO_THREADS 590#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 591 #define ECB_NO_SMP 1
552#endif 592#endif
553 593
554#if ECB_NO_THREADS || ECB_NO_SMP 594#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 595 #define ECB_MEMORY_FENCE do { } while (0)
556#endif 596#endif
557 597
558#ifndef ECB_MEMORY_FENCE 598#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__ 600 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 601 #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 */ 602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 606 #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 */ 607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 611 || 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") 612 #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__ \ 613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 616 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__ 620 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__ 622 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
584 #endif 631 #endif
585 #endif 632 #endif
586#endif 633#endif
587 634
588#ifndef ECB_MEMORY_FENCE 635#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
639
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model.
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */
648
589 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize () 650 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 651 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 653 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
607 #define ECB_MEMORY_FENCE __sync () 665 #define ECB_MEMORY_FENCE __sync ()
608 #endif 666 #endif
609#endif 667#endif
610 668
611#ifndef ECB_MEMORY_FENCE 669#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* we assume that these memory fences work on all variables/all memory accesses, */
672 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif
682#endif
683
684#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS 685 #if !ECB_AVOID_PTHREADS
613 /* 686 /*
614 * if you get undefined symbol references to pthread_mutex_lock, 687 * if you get undefined symbol references to pthread_mutex_lock,
615 * or failure to find pthread.h, then you should implement 688 * or failure to find pthread.h, then you should implement
616 * the ECB_MEMORY_FENCE operations for your cpu/compiler 689 * the ECB_MEMORY_FENCE operations for your cpu/compiler
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif 708#endif
636 709
637/*****************************************************************************/ 710/*****************************************************************************/
638 711
639#define ECB_C99 (__STDC_VERSION__ >= 199901L)
640
641#if __cplusplus 712#if __cplusplus
642 #define ecb_inline static inline 713 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5) 714#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__ 715 #define ecb_inline static __inline__
645#elif ECB_C99 716#elif ECB_C99
683#elif ECB_GCC_VERSION(3,0) 754#elif ECB_GCC_VERSION(3,0)
684 #define ecb_decltype(x) __typeof(x) 755 #define ecb_decltype(x) __typeof(x)
685#endif 756#endif
686 757
687#define ecb_noinline ecb_attribute ((__noinline__)) 758#define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__))
689#define ecb_unused ecb_attribute ((__unused__)) 759#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__)) 760#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__)) 761#define ecb_pure ecb_attribute ((__pure__))
762
763#if ECB_C11
764 #define ecb_noreturn _Noreturn
765#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif
692 768
693#if ECB_GCC_VERSION(4,3) 769#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__)) 770 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__)) 771 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__)) 772 #define ecb_cold ecb_attribute ((__cold__))
787 863
788 return r + ecb_ld32 (x); 864 return r + ecb_ld32 (x);
789 } 865 }
790#endif 866#endif
791 867
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
794{ 875{
795 return ( (x * 0x0802U & 0x22110U) 876 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
880 ecb_inline void ecb_unreachable (void) ecb_noreturn; 961 ecb_inline void ecb_unreachable (void) ecb_noreturn;
881 ecb_inline void ecb_unreachable (void) { } 962 ecb_inline void ecb_unreachable (void) { }
882#endif 963#endif
883 964
884/* try to tell the compiler that some condition is definitely true */ 965/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
886 967
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
888ecb_inline unsigned char 969ecb_inline unsigned char
889ecb_byteorder_helper (void) 970ecb_byteorder_helper (void)
890{ 971{
891 const uint32_t u = 0x11223344; 972 /* the union code still generates code under pressure in gcc, */
892 return *(unsigned char *)&u; 973 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11;
984#else
985 union
986 {
987 uint32_t i;
988 uint8_t c;
989 } u = { 0x11223344 };
990 return u.c;
991#endif
893} 992}
894 993
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 994ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 996ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
928 } 1027 }
929#else 1028#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif 1030#endif
932 1031
1032/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034
1035/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \
1038 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \
1044 || defined __alpha__ \
1045 || defined __hppa__ \
1046 || defined __ia64__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1048 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else
1051 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif
1054
1055#ifndef ECB_NO_LIBM
1056
1057 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1059 ecb_function_ uint32_t
1060 ecb_float_to_binary32 (float x)
1061 {
1062 uint32_t r;
1063
1064 #if ECB_STDFP
1065 memcpy (&r, &x, 4);
1066 #else
1067 /* slow emulation, works for anything but -0 */
1068 uint32_t m;
1069 int e;
1070
1071 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU;
1075
1076 m = frexpf (x, &e) * 0x1000000U;
1077
1078 r = m & 0x80000000U;
1079
1080 if (r)
1081 m = -m;
1082
1083 if (e <= -126)
1084 {
1085 m &= 0xffffffU;
1086 m >>= (-125 - e);
1087 e = -126;
1088 }
1089
1090 r |= (e + 126) << 23;
1091 r |= m & 0x7fffffU;
1092 #endif
1093
1094 return r;
1095 }
1096
1097 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1099 ecb_function_ float
1100 ecb_binary32_to_float (uint32_t x)
1101 {
1102 float r;
1103
1104 #if ECB_STDFP
1105 memcpy (&r, &x, 4);
1106 #else
1107 /* emulation, only works for normals and subnormals and +0 */
1108 int neg = x >> 31;
1109 int e = (x >> 23) & 0xffU;
1110
1111 x &= 0x7fffffU;
1112
1113 if (e)
1114 x |= 0x800000U;
1115 else
1116 e = 1;
1117
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1120
1121 r = neg ? -r : r;
1122 #endif
1123
1124 return r;
1125 }
1126
1127 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1129 ecb_function_ uint64_t
1130 ecb_double_to_binary64 (double x)
1131 {
1132 uint64_t r;
1133
1134 #if ECB_STDFP
1135 memcpy (&r, &x, 8);
1136 #else
1137 /* slow emulation, works for anything but -0 */
1138 uint64_t m;
1139 int e;
1140
1141 if (x == 0e0 ) return 0x0000000000000000U;
1142 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1143 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1144 if (x != x ) return 0X7ff7ffffffffffffU;
1145
1146 m = frexp (x, &e) * 0x20000000000000U;
1147
1148 r = m & 0x8000000000000000;;
1149
1150 if (r)
1151 m = -m;
1152
1153 if (e <= -1022)
1154 {
1155 m &= 0x1fffffffffffffU;
1156 m >>= (-1021 - e);
1157 e = -1022;
1158 }
1159
1160 r |= ((uint64_t)(e + 1022)) << 52;
1161 r |= m & 0xfffffffffffffU;
1162 #endif
1163
1164 return r;
1165 }
1166
1167 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1169 ecb_function_ double
1170 ecb_binary64_to_double (uint64_t x)
1171 {
1172 double r;
1173
1174 #if ECB_STDFP
1175 memcpy (&r, &x, 8);
1176 #else
1177 /* emulation, only works for normals and subnormals and +0 */
1178 int neg = x >> 63;
1179 int e = (x >> 52) & 0x7ffU;
1180
1181 x &= 0xfffffffffffffU;
1182
1183 if (e)
1184 x |= 0x10000000000000U;
1185 else
1186 e = 1;
1187
1188 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1189 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1190
1191 r = neg ? -r : r;
1192 #endif
1193
1194 return r;
1195 }
1196
1197#endif
1198
933#endif 1199#endif
934 1200
935/* ECB.H END */ 1201/* ECB.H END */
936 1202
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1103{ 1369{
1104 write (STDERR_FILENO, msg, strlen (msg)); 1370 write (STDERR_FILENO, msg, strlen (msg));
1105} 1371}
1106#endif 1372#endif
1107 1373
1108static void (*syserr_cb)(const char *msg); 1374static void (*syserr_cb)(const char *msg) EV_THROW;
1109 1375
1110void ecb_cold 1376void ecb_cold
1111ev_set_syserr_cb (void (*cb)(const char *msg)) 1377ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1112{ 1378{
1113 syserr_cb = cb; 1379 syserr_cb = cb;
1114} 1380}
1115 1381
1116static void noinline ecb_cold 1382static void noinline ecb_cold
1134 abort (); 1400 abort ();
1135 } 1401 }
1136} 1402}
1137 1403
1138static void * 1404static void *
1139ev_realloc_emul (void *ptr, long size) 1405ev_realloc_emul (void *ptr, long size) EV_THROW
1140{ 1406{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
1144 /* some systems, notably openbsd and darwin, fail to properly 1407 /* some systems, notably openbsd and darwin, fail to properly
1145 * implement realloc (x, 0) (as required by both ansi c-89 and 1408 * implement realloc (x, 0) (as required by both ansi c-89 and
1146 * the single unix specification, so work around them here. 1409 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it,
1411 * despite documenting it otherwise.
1147 */ 1412 */
1148 1413
1149 if (size) 1414 if (size)
1150 return realloc (ptr, size); 1415 return realloc (ptr, size);
1151 1416
1152 free (ptr); 1417 free (ptr);
1153 return 0; 1418 return 0;
1154#endif
1155} 1419}
1156 1420
1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1158 1422
1159void ecb_cold 1423void ecb_cold
1160ev_set_allocator (void *(*cb)(void *ptr, long size)) 1424ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1161{ 1425{
1162 alloc = cb; 1426 alloc = cb;
1163} 1427}
1164 1428
1165inline_speed void * 1429inline_speed void *
1282 1546
1283/*****************************************************************************/ 1547/*****************************************************************************/
1284 1548
1285#ifndef EV_HAVE_EV_TIME 1549#ifndef EV_HAVE_EV_TIME
1286ev_tstamp 1550ev_tstamp
1287ev_time (void) 1551ev_time (void) EV_THROW
1288{ 1552{
1289#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
1290 if (expect_true (have_realtime)) 1554 if (expect_true (have_realtime))
1291 { 1555 {
1292 struct timespec ts; 1556 struct timespec ts;
1316 return ev_time (); 1580 return ev_time ();
1317} 1581}
1318 1582
1319#if EV_MULTIPLICITY 1583#if EV_MULTIPLICITY
1320ev_tstamp 1584ev_tstamp
1321ev_now (EV_P) 1585ev_now (EV_P) EV_THROW
1322{ 1586{
1323 return ev_rt_now; 1587 return ev_rt_now;
1324} 1588}
1325#endif 1589#endif
1326 1590
1327void 1591void
1328ev_sleep (ev_tstamp delay) 1592ev_sleep (ev_tstamp delay) EV_THROW
1329{ 1593{
1330 if (delay > 0.) 1594 if (delay > 0.)
1331 { 1595 {
1332#if EV_USE_NANOSLEEP 1596#if EV_USE_NANOSLEEP
1333 struct timespec ts; 1597 struct timespec ts;
1414pendingcb (EV_P_ ev_prepare *w, int revents) 1678pendingcb (EV_P_ ev_prepare *w, int revents)
1415{ 1679{
1416} 1680}
1417 1681
1418void noinline 1682void noinline
1419ev_feed_event (EV_P_ void *w, int revents) 1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1420{ 1684{
1421 W w_ = (W)w; 1685 W w_ = (W)w;
1422 int pri = ABSPRI (w_); 1686 int pri = ABSPRI (w_);
1423 1687
1424 if (expect_false (w_->pending)) 1688 if (expect_false (w_->pending))
1428 w_->pending = ++pendingcnt [pri]; 1692 w_->pending = ++pendingcnt [pri];
1429 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1430 pendings [pri][w_->pending - 1].w = w_; 1694 pendings [pri][w_->pending - 1].w = w_;
1431 pendings [pri][w_->pending - 1].events = revents; 1695 pendings [pri][w_->pending - 1].events = revents;
1432 } 1696 }
1697
1698 pendingpri = NUMPRI - 1;
1433} 1699}
1434 1700
1435inline_speed void 1701inline_speed void
1436feed_reverse (EV_P_ W w) 1702feed_reverse (EV_P_ W w)
1437{ 1703{
1483 if (expect_true (!anfd->reify)) 1749 if (expect_true (!anfd->reify))
1484 fd_event_nocheck (EV_A_ fd, revents); 1750 fd_event_nocheck (EV_A_ fd, revents);
1485} 1751}
1486 1752
1487void 1753void
1488ev_feed_fd_event (EV_P_ int fd, int revents) 1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1489{ 1755{
1490 if (fd >= 0 && fd < anfdmax) 1756 if (fd >= 0 && fd < anfdmax)
1491 fd_event_nocheck (EV_A_ fd, revents); 1757 fd_event_nocheck (EV_A_ fd, revents);
1492} 1758}
1493 1759
1812static void noinline ecb_cold 2078static void noinline ecb_cold
1813evpipe_init (EV_P) 2079evpipe_init (EV_P)
1814{ 2080{
1815 if (!ev_is_active (&pipe_w)) 2081 if (!ev_is_active (&pipe_w))
1816 { 2082 {
2083 int fds [2];
2084
1817# if EV_USE_EVENTFD 2085# if EV_USE_EVENTFD
2086 fds [0] = -1;
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2087 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL) 2088 if (fds [1] < 0 && errno == EINVAL)
1820 evfd = eventfd (0, 0); 2089 fds [1] = eventfd (0, 0);
1821 2090
1822 if (evfd >= 0) 2091 if (fds [1] < 0)
2092# endif
1823 { 2093 {
2094 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe");
2096
2097 fd_intern (fds [0]);
2098 }
2099
2100 fd_intern (fds [1]);
2101
1824 evpipe [0] = -1; 2102 evpipe [0] = fds [0];
1825 fd_intern (evfd); /* doing it twice doesn't hurt */ 2103
1826 ev_io_set (&pipe_w, evfd, EV_READ); 2104 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else
2107 {
2108 /* on subsequent calls, do not change evpipe [1] */
2109 /* so that evpipe_write can always rely on its value. */
2110 /* this branch does not do anything sensible on windows, */
2111 /* so must not be executed on windows */
2112
2113 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]);
2115 }
2116
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 }
2121}
2122
2123inline_speed void
2124evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2125{
2126 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2127
2128 if (expect_true (*flag))
2129 return;
2130
2131 *flag = 1;
2132 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2133
2134 pipe_write_skipped = 1;
2135
2136 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2137
2138 if (pipe_write_wanted)
2139 {
2140 int old_errno;
2141
2142 pipe_write_skipped = 0;
2143 ECB_MEMORY_FENCE_RELEASE;
2144
2145 old_errno = errno; /* save errno because write will clobber it */
2146
2147#if EV_USE_EVENTFD
2148 if (evpipe [0] < 0)
2149 {
2150 uint64_t counter = 1;
2151 write (evpipe [1], &counter, sizeof (uint64_t));
1827 } 2152 }
1828 else 2153 else
1829# endif 2154#endif
1830 { 2155 {
1831 while (pipe (evpipe)) 2156#ifdef _WIN32
1832 ev_syserr ("(libev) error creating signal/async pipe"); 2157 WSABUF buf;
1833 2158 DWORD sent;
1834 fd_intern (evpipe [0]); 2159 buf.buf = &buf;
1835 fd_intern (evpipe [1]); 2160 buf.len = 1;
1836 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2161 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1837 } 2162#else
1838
1839 ev_io_start (EV_A_ &pipe_w);
1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1841 }
1842}
1843
1844inline_speed void
1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1846{
1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1864 old_errno = errno; /* save errno because write will clobber it */
1865
1866#if EV_USE_EVENTFD
1867 if (evfd >= 0)
1868 {
1869 uint64_t counter = 1;
1870 write (evfd, &counter, sizeof (uint64_t));
1871 }
1872 else
1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
1882 write (evpipe [1], &(evpipe [1]), 1); 2163 write (evpipe [1], &(evpipe [1]), 1);
2164#endif
1883 } 2165 }
1884 2166
1885 errno = old_errno; 2167 errno = old_errno;
1886 } 2168 }
1887} 2169}
1894 int i; 2176 int i;
1895 2177
1896 if (revents & EV_READ) 2178 if (revents & EV_READ)
1897 { 2179 {
1898#if EV_USE_EVENTFD 2180#if EV_USE_EVENTFD
1899 if (evfd >= 0) 2181 if (evpipe [0] < 0)
1900 { 2182 {
1901 uint64_t counter; 2183 uint64_t counter;
1902 read (evfd, &counter, sizeof (uint64_t)); 2184 read (evpipe [1], &counter, sizeof (uint64_t));
1903 } 2185 }
1904 else 2186 else
1905#endif 2187#endif
1906 { 2188 {
1907 char dummy; 2189 char dummy[4];
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2190#ifdef _WIN32
2191 WSABUF buf;
2192 DWORD recvd;
2193 DWORD flags = 0;
2194 buf.buf = dummy;
2195 buf.len = sizeof (dummy);
2196 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2197#else
1909 read (evpipe [0], &dummy, 1); 2198 read (evpipe [0], &dummy, sizeof (dummy));
2199#endif
1910 } 2200 }
1911 } 2201 }
1912 2202
1913 pipe_write_skipped = 0; 2203 pipe_write_skipped = 0;
2204
2205 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1914 2206
1915#if EV_SIGNAL_ENABLE 2207#if EV_SIGNAL_ENABLE
1916 if (sig_pending) 2208 if (sig_pending)
1917 { 2209 {
1918 sig_pending = 0; 2210 sig_pending = 0;
2211
2212 ECB_MEMORY_FENCE;
1919 2213
1920 for (i = EV_NSIG - 1; i--; ) 2214 for (i = EV_NSIG - 1; i--; )
1921 if (expect_false (signals [i].pending)) 2215 if (expect_false (signals [i].pending))
1922 ev_feed_signal_event (EV_A_ i + 1); 2216 ev_feed_signal_event (EV_A_ i + 1);
1923 } 2217 }
1925 2219
1926#if EV_ASYNC_ENABLE 2220#if EV_ASYNC_ENABLE
1927 if (async_pending) 2221 if (async_pending)
1928 { 2222 {
1929 async_pending = 0; 2223 async_pending = 0;
2224
2225 ECB_MEMORY_FENCE;
1930 2226
1931 for (i = asynccnt; i--; ) 2227 for (i = asynccnt; i--; )
1932 if (asyncs [i]->sent) 2228 if (asyncs [i]->sent)
1933 { 2229 {
1934 asyncs [i]->sent = 0; 2230 asyncs [i]->sent = 0;
2231 ECB_MEMORY_FENCE_RELEASE;
1935 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2232 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1936 } 2233 }
1937 } 2234 }
1938#endif 2235#endif
1939} 2236}
1940 2237
1941/*****************************************************************************/ 2238/*****************************************************************************/
1942 2239
1943void 2240void
1944ev_feed_signal (int signum) 2241ev_feed_signal (int signum) EV_THROW
1945{ 2242{
1946#if EV_MULTIPLICITY 2243#if EV_MULTIPLICITY
2244 EV_P;
2245 ECB_MEMORY_FENCE_ACQUIRE;
1947 EV_P = signals [signum - 1].loop; 2246 EV_A = signals [signum - 1].loop;
1948 2247
1949 if (!EV_A) 2248 if (!EV_A)
1950 return; 2249 return;
1951#endif 2250#endif
1952 2251
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1; 2252 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending); 2253 evpipe_write (EV_A_ &sig_pending);
1958} 2254}
1959 2255
1960static void 2256static void
1966 2262
1967 ev_feed_signal (signum); 2263 ev_feed_signal (signum);
1968} 2264}
1969 2265
1970void noinline 2266void noinline
1971ev_feed_signal_event (EV_P_ int signum) 2267ev_feed_signal_event (EV_P_ int signum) EV_THROW
1972{ 2268{
1973 WL w; 2269 WL w;
1974 2270
1975 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2271 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1976 return; 2272 return;
1977 2273
1978 --signum; 2274 --signum;
1979 2275
1980#if EV_MULTIPLICITY 2276#if EV_MULTIPLICITY
1984 if (expect_false (signals [signum].loop != EV_A)) 2280 if (expect_false (signals [signum].loop != EV_A))
1985 return; 2281 return;
1986#endif 2282#endif
1987 2283
1988 signals [signum].pending = 0; 2284 signals [signum].pending = 0;
2285 ECB_MEMORY_FENCE_RELEASE;
1989 2286
1990 for (w = signals [signum].head; w; w = w->next) 2287 for (w = signals [signum].head; w; w = w->next)
1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2288 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1992} 2289}
1993 2290
2092#if EV_USE_SELECT 2389#if EV_USE_SELECT
2093# include "ev_select.c" 2390# include "ev_select.c"
2094#endif 2391#endif
2095 2392
2096int ecb_cold 2393int ecb_cold
2097ev_version_major (void) 2394ev_version_major (void) EV_THROW
2098{ 2395{
2099 return EV_VERSION_MAJOR; 2396 return EV_VERSION_MAJOR;
2100} 2397}
2101 2398
2102int ecb_cold 2399int ecb_cold
2103ev_version_minor (void) 2400ev_version_minor (void) EV_THROW
2104{ 2401{
2105 return EV_VERSION_MINOR; 2402 return EV_VERSION_MINOR;
2106} 2403}
2107 2404
2108/* return true if we are running with elevated privileges and should ignore env variables */ 2405/* return true if we are running with elevated privileges and should ignore env variables */
2116 || getgid () != getegid (); 2413 || getgid () != getegid ();
2117#endif 2414#endif
2118} 2415}
2119 2416
2120unsigned int ecb_cold 2417unsigned int ecb_cold
2121ev_supported_backends (void) 2418ev_supported_backends (void) EV_THROW
2122{ 2419{
2123 unsigned int flags = 0; 2420 unsigned int flags = 0;
2124 2421
2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2422 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2126 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2423 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
2130 2427
2131 return flags; 2428 return flags;
2132} 2429}
2133 2430
2134unsigned int ecb_cold 2431unsigned int ecb_cold
2135ev_recommended_backends (void) 2432ev_recommended_backends (void) EV_THROW
2136{ 2433{
2137 unsigned int flags = ev_supported_backends (); 2434 unsigned int flags = ev_supported_backends ();
2138 2435
2139#ifndef __NetBSD__ 2436#ifndef __NetBSD__
2140 /* kqueue is borked on everything but netbsd apparently */ 2437 /* kqueue is borked on everything but netbsd apparently */
2152 2449
2153 return flags; 2450 return flags;
2154} 2451}
2155 2452
2156unsigned int ecb_cold 2453unsigned int ecb_cold
2157ev_embeddable_backends (void) 2454ev_embeddable_backends (void) EV_THROW
2158{ 2455{
2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2456 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2160 2457
2161 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2458 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2459 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2164 2461
2165 return flags; 2462 return flags;
2166} 2463}
2167 2464
2168unsigned int 2465unsigned int
2169ev_backend (EV_P) 2466ev_backend (EV_P) EV_THROW
2170{ 2467{
2171 return backend; 2468 return backend;
2172} 2469}
2173 2470
2174#if EV_FEATURE_API 2471#if EV_FEATURE_API
2175unsigned int 2472unsigned int
2176ev_iteration (EV_P) 2473ev_iteration (EV_P) EV_THROW
2177{ 2474{
2178 return loop_count; 2475 return loop_count;
2179} 2476}
2180 2477
2181unsigned int 2478unsigned int
2182ev_depth (EV_P) 2479ev_depth (EV_P) EV_THROW
2183{ 2480{
2184 return loop_depth; 2481 return loop_depth;
2185} 2482}
2186 2483
2187void 2484void
2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2485ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2189{ 2486{
2190 io_blocktime = interval; 2487 io_blocktime = interval;
2191} 2488}
2192 2489
2193void 2490void
2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2491ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2195{ 2492{
2196 timeout_blocktime = interval; 2493 timeout_blocktime = interval;
2197} 2494}
2198 2495
2199void 2496void
2200ev_set_userdata (EV_P_ void *data) 2497ev_set_userdata (EV_P_ void *data) EV_THROW
2201{ 2498{
2202 userdata = data; 2499 userdata = data;
2203} 2500}
2204 2501
2205void * 2502void *
2206ev_userdata (EV_P) 2503ev_userdata (EV_P) EV_THROW
2207{ 2504{
2208 return userdata; 2505 return userdata;
2209} 2506}
2210 2507
2211void 2508void
2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2509ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2213{ 2510{
2214 invoke_cb = invoke_pending_cb; 2511 invoke_cb = invoke_pending_cb;
2215} 2512}
2216 2513
2217void 2514void
2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2515ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2219{ 2516{
2220 release_cb = release; 2517 release_cb = release;
2221 acquire_cb = acquire; 2518 acquire_cb = acquire;
2222} 2519}
2223#endif 2520#endif
2224 2521
2225/* initialise a loop structure, must be zero-initialised */ 2522/* initialise a loop structure, must be zero-initialised */
2226static void noinline ecb_cold 2523static void noinline ecb_cold
2227loop_init (EV_P_ unsigned int flags) 2524loop_init (EV_P_ unsigned int flags) EV_THROW
2228{ 2525{
2229 if (!backend) 2526 if (!backend)
2230 { 2527 {
2231 origflags = flags; 2528 origflags = flags;
2232 2529
2277#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
2278 async_pending = 0; 2575 async_pending = 0;
2279#endif 2576#endif
2280 pipe_write_skipped = 0; 2577 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0; 2578 pipe_write_wanted = 0;
2579 evpipe [0] = -1;
2580 evpipe [1] = -1;
2282#if EV_USE_INOTIFY 2581#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif 2583#endif
2285#if EV_USE_SIGNALFD 2584#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2585 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2337 EV_INVOKE_PENDING; 2636 EV_INVOKE_PENDING;
2338 } 2637 }
2339#endif 2638#endif
2340 2639
2341#if EV_CHILD_ENABLE 2640#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev)) 2641 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2343 { 2642 {
2344 ev_ref (EV_A); /* child watcher */ 2643 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev); 2644 ev_signal_stop (EV_A_ &childev);
2346 } 2645 }
2347#endif 2646#endif
2349 if (ev_is_active (&pipe_w)) 2648 if (ev_is_active (&pipe_w))
2350 { 2649 {
2351 /*ev_ref (EV_A);*/ 2650 /*ev_ref (EV_A);*/
2352 /*ev_io_stop (EV_A_ &pipe_w);*/ 2651 /*ev_io_stop (EV_A_ &pipe_w);*/
2353 2652
2354#if EV_USE_EVENTFD
2355 if (evfd >= 0)
2356 close (evfd);
2357#endif
2358
2359 if (evpipe [0] >= 0)
2360 {
2361 EV_WIN32_CLOSE_FD (evpipe [0]); 2653 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2362 EV_WIN32_CLOSE_FD (evpipe [1]); 2654 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2363 }
2364 } 2655 }
2365 2656
2366#if EV_USE_SIGNALFD 2657#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w)) 2658 if (ev_is_active (&sigfd_w))
2368 close (sigfd); 2659 close (sigfd);
2454#endif 2745#endif
2455#if EV_USE_INOTIFY 2746#if EV_USE_INOTIFY
2456 infy_fork (EV_A); 2747 infy_fork (EV_A);
2457#endif 2748#endif
2458 2749
2750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2459 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
2460 { 2752 {
2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2753 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2462 2754
2463 ev_ref (EV_A); 2755 ev_ref (EV_A);
2464 ev_io_stop (EV_A_ &pipe_w); 2756 ev_io_stop (EV_A_ &pipe_w);
2465 2757
2466#if EV_USE_EVENTFD
2467 if (evfd >= 0)
2468 close (evfd);
2469#endif
2470
2471 if (evpipe [0] >= 0) 2758 if (evpipe [0] >= 0)
2472 {
2473 EV_WIN32_CLOSE_FD (evpipe [0]); 2759 EV_WIN32_CLOSE_FD (evpipe [0]);
2474 EV_WIN32_CLOSE_FD (evpipe [1]);
2475 }
2476 2760
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2478 evpipe_init (EV_A); 2761 evpipe_init (EV_A);
2479 /* now iterate over everything, in case we missed something */ 2762 /* iterate over everything, in case we missed something before */
2480 pipecb (EV_A_ &pipe_w, EV_READ); 2763 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2481#endif
2482 } 2764 }
2765#endif
2483 2766
2484 postfork = 0; 2767 postfork = 0;
2485} 2768}
2486 2769
2487#if EV_MULTIPLICITY 2770#if EV_MULTIPLICITY
2488 2771
2489struct ev_loop * ecb_cold 2772struct ev_loop * ecb_cold
2490ev_loop_new (unsigned int flags) 2773ev_loop_new (unsigned int flags) EV_THROW
2491{ 2774{
2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2493 2776
2494 memset (EV_A, 0, sizeof (struct ev_loop)); 2777 memset (EV_A, 0, sizeof (struct ev_loop));
2495 loop_init (EV_A_ flags); 2778 loop_init (EV_A_ flags);
2539} 2822}
2540#endif 2823#endif
2541 2824
2542#if EV_FEATURE_API 2825#if EV_FEATURE_API
2543void ecb_cold 2826void ecb_cold
2544ev_verify (EV_P) 2827ev_verify (EV_P) EV_THROW
2545{ 2828{
2546#if EV_VERIFY 2829#if EV_VERIFY
2547 int i; 2830 int i;
2548 WL w; 2831 WL w, w2;
2549 2832
2550 assert (activecnt >= -1); 2833 assert (activecnt >= -1);
2551 2834
2552 assert (fdchangemax >= fdchangecnt); 2835 assert (fdchangemax >= fdchangecnt);
2553 for (i = 0; i < fdchangecnt; ++i) 2836 for (i = 0; i < fdchangecnt; ++i)
2554 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2837 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2555 2838
2556 assert (anfdmax >= 0); 2839 assert (anfdmax >= 0);
2557 for (i = 0; i < anfdmax; ++i) 2840 for (i = 0; i < anfdmax; ++i)
2841 {
2842 int j = 0;
2843
2558 for (w = anfds [i].head; w; w = w->next) 2844 for (w = w2 = anfds [i].head; w; w = w->next)
2559 { 2845 {
2560 verify_watcher (EV_A_ (W)w); 2846 verify_watcher (EV_A_ (W)w);
2847
2848 if (j++ & 1)
2849 {
2850 assert (("libev: io watcher list contains a loop", w != w2));
2851 w2 = w2->next;
2852 }
2853
2561 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2854 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2562 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2855 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2563 } 2856 }
2857 }
2564 2858
2565 assert (timermax >= timercnt); 2859 assert (timermax >= timercnt);
2566 verify_heap (EV_A_ timers, timercnt); 2860 verify_heap (EV_A_ timers, timercnt);
2567 2861
2568#if EV_PERIODIC_ENABLE 2862#if EV_PERIODIC_ENABLE
2618#if EV_MULTIPLICITY 2912#if EV_MULTIPLICITY
2619struct ev_loop * ecb_cold 2913struct ev_loop * ecb_cold
2620#else 2914#else
2621int 2915int
2622#endif 2916#endif
2623ev_default_loop (unsigned int flags) 2917ev_default_loop (unsigned int flags) EV_THROW
2624{ 2918{
2625 if (!ev_default_loop_ptr) 2919 if (!ev_default_loop_ptr)
2626 { 2920 {
2627#if EV_MULTIPLICITY 2921#if EV_MULTIPLICITY
2628 EV_P = ev_default_loop_ptr = &default_loop_struct; 2922 EV_P = ev_default_loop_ptr = &default_loop_struct;
2647 2941
2648 return ev_default_loop_ptr; 2942 return ev_default_loop_ptr;
2649} 2943}
2650 2944
2651void 2945void
2652ev_loop_fork (EV_P) 2946ev_loop_fork (EV_P) EV_THROW
2653{ 2947{
2654 postfork = 1; /* must be in line with ev_default_fork */ 2948 postfork = 1;
2655} 2949}
2656 2950
2657/*****************************************************************************/ 2951/*****************************************************************************/
2658 2952
2659void 2953void
2661{ 2955{
2662 EV_CB_INVOKE ((W)w, revents); 2956 EV_CB_INVOKE ((W)w, revents);
2663} 2957}
2664 2958
2665unsigned int 2959unsigned int
2666ev_pending_count (EV_P) 2960ev_pending_count (EV_P) EV_THROW
2667{ 2961{
2668 int pri; 2962 int pri;
2669 unsigned int count = 0; 2963 unsigned int count = 0;
2670 2964
2671 for (pri = NUMPRI; pri--; ) 2965 for (pri = NUMPRI; pri--; )
2675} 2969}
2676 2970
2677void noinline 2971void noinline
2678ev_invoke_pending (EV_P) 2972ev_invoke_pending (EV_P)
2679{ 2973{
2680 int pri; 2974 pendingpri = NUMPRI;
2681 2975
2682 for (pri = NUMPRI; pri--; ) 2976 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2977 {
2978 --pendingpri;
2979
2683 while (pendingcnt [pri]) 2980 while (pendingcnt [pendingpri])
2684 { 2981 {
2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2982 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2686 2983
2687 p->w->pending = 0; 2984 p->w->pending = 0;
2688 EV_CB_INVOKE (p->w, p->events); 2985 EV_CB_INVOKE (p->w, p->events);
2689 EV_FREQUENT_CHECK; 2986 EV_FREQUENT_CHECK;
2690 } 2987 }
2988 }
2691} 2989}
2692 2990
2693#if EV_IDLE_ENABLE 2991#if EV_IDLE_ENABLE
2694/* make idle watchers pending. this handles the "call-idle */ 2992/* make idle watchers pending. this handles the "call-idle */
2695/* only when higher priorities are idle" logic */ 2993/* only when higher priorities are idle" logic */
2785{ 3083{
2786 EV_FREQUENT_CHECK; 3084 EV_FREQUENT_CHECK;
2787 3085
2788 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3086 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2789 { 3087 {
2790 int feed_count = 0;
2791
2792 do 3088 do
2793 { 3089 {
2794 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3090 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2795 3091
2796 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3092 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2930 3226
2931 mn_now = ev_rt_now; 3227 mn_now = ev_rt_now;
2932 } 3228 }
2933} 3229}
2934 3230
2935void 3231int
2936ev_run (EV_P_ int flags) 3232ev_run (EV_P_ int flags)
2937{ 3233{
2938#if EV_FEATURE_API 3234#if EV_FEATURE_API
2939 ++loop_depth; 3235 ++loop_depth;
2940#endif 3236#endif
3055 backend_poll (EV_A_ waittime); 3351 backend_poll (EV_A_ waittime);
3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3352 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057 3353
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3354 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059 3355
3356 ECB_MEMORY_FENCE_ACQUIRE;
3060 if (pipe_write_skipped) 3357 if (pipe_write_skipped)
3061 { 3358 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3359 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3360 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 } 3361 }
3097 loop_done = EVBREAK_CANCEL; 3394 loop_done = EVBREAK_CANCEL;
3098 3395
3099#if EV_FEATURE_API 3396#if EV_FEATURE_API
3100 --loop_depth; 3397 --loop_depth;
3101#endif 3398#endif
3399
3400 return activecnt;
3102} 3401}
3103 3402
3104void 3403void
3105ev_break (EV_P_ int how) 3404ev_break (EV_P_ int how) EV_THROW
3106{ 3405{
3107 loop_done = how; 3406 loop_done = how;
3108} 3407}
3109 3408
3110void 3409void
3111ev_ref (EV_P) 3410ev_ref (EV_P) EV_THROW
3112{ 3411{
3113 ++activecnt; 3412 ++activecnt;
3114} 3413}
3115 3414
3116void 3415void
3117ev_unref (EV_P) 3416ev_unref (EV_P) EV_THROW
3118{ 3417{
3119 --activecnt; 3418 --activecnt;
3120} 3419}
3121 3420
3122void 3421void
3123ev_now_update (EV_P) 3422ev_now_update (EV_P) EV_THROW
3124{ 3423{
3125 time_update (EV_A_ 1e100); 3424 time_update (EV_A_ 1e100);
3126} 3425}
3127 3426
3128void 3427void
3129ev_suspend (EV_P) 3428ev_suspend (EV_P) EV_THROW
3130{ 3429{
3131 ev_now_update (EV_A); 3430 ev_now_update (EV_A);
3132} 3431}
3133 3432
3134void 3433void
3135ev_resume (EV_P) 3434ev_resume (EV_P) EV_THROW
3136{ 3435{
3137 ev_tstamp mn_prev = mn_now; 3436 ev_tstamp mn_prev = mn_now;
3138 3437
3139 ev_now_update (EV_A); 3438 ev_now_update (EV_A);
3140 timers_reschedule (EV_A_ mn_now - mn_prev); 3439 timers_reschedule (EV_A_ mn_now - mn_prev);
3179 w->pending = 0; 3478 w->pending = 0;
3180 } 3479 }
3181} 3480}
3182 3481
3183int 3482int
3184ev_clear_pending (EV_P_ void *w) 3483ev_clear_pending (EV_P_ void *w) EV_THROW
3185{ 3484{
3186 W w_ = (W)w; 3485 W w_ = (W)w;
3187 int pending = w_->pending; 3486 int pending = w_->pending;
3188 3487
3189 if (expect_true (pending)) 3488 if (expect_true (pending))
3222} 3521}
3223 3522
3224/*****************************************************************************/ 3523/*****************************************************************************/
3225 3524
3226void noinline 3525void noinline
3227ev_io_start (EV_P_ ev_io *w) 3526ev_io_start (EV_P_ ev_io *w) EV_THROW
3228{ 3527{
3229 int fd = w->fd; 3528 int fd = w->fd;
3230 3529
3231 if (expect_false (ev_is_active (w))) 3530 if (expect_false (ev_is_active (w)))
3232 return; 3531 return;
3238 3537
3239 ev_start (EV_A_ (W)w, 1); 3538 ev_start (EV_A_ (W)w, 1);
3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3539 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3241 wlist_add (&anfds[fd].head, (WL)w); 3540 wlist_add (&anfds[fd].head, (WL)w);
3242 3541
3542 /* common bug, apparently */
3543 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3544
3243 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3545 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3244 w->events &= ~EV__IOFDSET; 3546 w->events &= ~EV__IOFDSET;
3245 3547
3246 EV_FREQUENT_CHECK; 3548 EV_FREQUENT_CHECK;
3247} 3549}
3248 3550
3249void noinline 3551void noinline
3250ev_io_stop (EV_P_ ev_io *w) 3552ev_io_stop (EV_P_ ev_io *w) EV_THROW
3251{ 3553{
3252 clear_pending (EV_A_ (W)w); 3554 clear_pending (EV_A_ (W)w);
3253 if (expect_false (!ev_is_active (w))) 3555 if (expect_false (!ev_is_active (w)))
3254 return; 3556 return;
3255 3557
3264 3566
3265 EV_FREQUENT_CHECK; 3567 EV_FREQUENT_CHECK;
3266} 3568}
3267 3569
3268void noinline 3570void noinline
3269ev_timer_start (EV_P_ ev_timer *w) 3571ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3270{ 3572{
3271 if (expect_false (ev_is_active (w))) 3573 if (expect_false (ev_is_active (w)))
3272 return; 3574 return;
3273 3575
3274 ev_at (w) += mn_now; 3576 ev_at (w) += mn_now;
3288 3590
3289 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3591 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3290} 3592}
3291 3593
3292void noinline 3594void noinline
3293ev_timer_stop (EV_P_ ev_timer *w) 3595ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3294{ 3596{
3295 clear_pending (EV_A_ (W)w); 3597 clear_pending (EV_A_ (W)w);
3296 if (expect_false (!ev_is_active (w))) 3598 if (expect_false (!ev_is_active (w)))
3297 return; 3599 return;
3298 3600
3318 3620
3319 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
3320} 3622}
3321 3623
3322void noinline 3624void noinline
3323ev_timer_again (EV_P_ ev_timer *w) 3625ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3324{ 3626{
3325 EV_FREQUENT_CHECK; 3627 EV_FREQUENT_CHECK;
3326 3628
3327 clear_pending (EV_A_ (W)w); 3629 clear_pending (EV_A_ (W)w);
3328 3630
3345 3647
3346 EV_FREQUENT_CHECK; 3648 EV_FREQUENT_CHECK;
3347} 3649}
3348 3650
3349ev_tstamp 3651ev_tstamp
3350ev_timer_remaining (EV_P_ ev_timer *w) 3652ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3351{ 3653{
3352 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3654 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3353} 3655}
3354 3656
3355#if EV_PERIODIC_ENABLE 3657#if EV_PERIODIC_ENABLE
3356void noinline 3658void noinline
3357ev_periodic_start (EV_P_ ev_periodic *w) 3659ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3358{ 3660{
3359 if (expect_false (ev_is_active (w))) 3661 if (expect_false (ev_is_active (w)))
3360 return; 3662 return;
3361 3663
3362 if (w->reschedule_cb) 3664 if (w->reschedule_cb)
3382 3684
3383 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3685 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3384} 3686}
3385 3687
3386void noinline 3688void noinline
3387ev_periodic_stop (EV_P_ ev_periodic *w) 3689ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3388{ 3690{
3389 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
3390 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
3391 return; 3693 return;
3392 3694
3410 3712
3411 EV_FREQUENT_CHECK; 3713 EV_FREQUENT_CHECK;
3412} 3714}
3413 3715
3414void noinline 3716void noinline
3415ev_periodic_again (EV_P_ ev_periodic *w) 3717ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3416{ 3718{
3417 /* TODO: use adjustheap and recalculation */ 3719 /* TODO: use adjustheap and recalculation */
3418 ev_periodic_stop (EV_A_ w); 3720 ev_periodic_stop (EV_A_ w);
3419 ev_periodic_start (EV_A_ w); 3721 ev_periodic_start (EV_A_ w);
3420} 3722}
3425#endif 3727#endif
3426 3728
3427#if EV_SIGNAL_ENABLE 3729#if EV_SIGNAL_ENABLE
3428 3730
3429void noinline 3731void noinline
3430ev_signal_start (EV_P_ ev_signal *w) 3732ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3431{ 3733{
3432 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
3433 return; 3735 return;
3434 3736
3435 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3737 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3437#if EV_MULTIPLICITY 3739#if EV_MULTIPLICITY
3438 assert (("libev: a signal must not be attached to two different loops", 3740 assert (("libev: a signal must not be attached to two different loops",
3439 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3741 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3440 3742
3441 signals [w->signum - 1].loop = EV_A; 3743 signals [w->signum - 1].loop = EV_A;
3744 ECB_MEMORY_FENCE_RELEASE;
3442#endif 3745#endif
3443 3746
3444 EV_FREQUENT_CHECK; 3747 EV_FREQUENT_CHECK;
3445 3748
3446#if EV_USE_SIGNALFD 3749#if EV_USE_SIGNALFD
3506 3809
3507 EV_FREQUENT_CHECK; 3810 EV_FREQUENT_CHECK;
3508} 3811}
3509 3812
3510void noinline 3813void noinline
3511ev_signal_stop (EV_P_ ev_signal *w) 3814ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3512{ 3815{
3513 clear_pending (EV_A_ (W)w); 3816 clear_pending (EV_A_ (W)w);
3514 if (expect_false (!ev_is_active (w))) 3817 if (expect_false (!ev_is_active (w)))
3515 return; 3818 return;
3516 3819
3547#endif 3850#endif
3548 3851
3549#if EV_CHILD_ENABLE 3852#if EV_CHILD_ENABLE
3550 3853
3551void 3854void
3552ev_child_start (EV_P_ ev_child *w) 3855ev_child_start (EV_P_ ev_child *w) EV_THROW
3553{ 3856{
3554#if EV_MULTIPLICITY 3857#if EV_MULTIPLICITY
3555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3858 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3556#endif 3859#endif
3557 if (expect_false (ev_is_active (w))) 3860 if (expect_false (ev_is_active (w)))
3564 3867
3565 EV_FREQUENT_CHECK; 3868 EV_FREQUENT_CHECK;
3566} 3869}
3567 3870
3568void 3871void
3569ev_child_stop (EV_P_ ev_child *w) 3872ev_child_stop (EV_P_ ev_child *w) EV_THROW
3570{ 3873{
3571 clear_pending (EV_A_ (W)w); 3874 clear_pending (EV_A_ (W)w);
3572 if (expect_false (!ev_is_active (w))) 3875 if (expect_false (!ev_is_active (w)))
3573 return; 3876 return;
3574 3877
3601# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3904# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3602 3905
3603static void noinline 3906static void noinline
3604infy_add (EV_P_ ev_stat *w) 3907infy_add (EV_P_ ev_stat *w)
3605{ 3908{
3606 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); 3909 w->wd = inotify_add_watch (fs_fd, w->path,
3910 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3911 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3912 | IN_DONT_FOLLOW | IN_MASK_ADD);
3607 3913
3608 if (w->wd >= 0) 3914 if (w->wd >= 0)
3609 { 3915 {
3610 struct statfs sfs; 3916 struct statfs sfs;
3611 3917
3615 3921
3616 if (!fs_2625) 3922 if (!fs_2625)
3617 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3923 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3618 else if (!statfs (w->path, &sfs) 3924 else if (!statfs (w->path, &sfs)
3619 && (sfs.f_type == 0x1373 /* devfs */ 3925 && (sfs.f_type == 0x1373 /* devfs */
3926 || sfs.f_type == 0x4006 /* fat */
3927 || sfs.f_type == 0x4d44 /* msdos */
3620 || sfs.f_type == 0xEF53 /* ext2/3 */ 3928 || sfs.f_type == 0xEF53 /* ext2/3 */
3929 || sfs.f_type == 0x72b6 /* jffs2 */
3930 || sfs.f_type == 0x858458f6 /* ramfs */
3931 || sfs.f_type == 0x5346544e /* ntfs */
3621 || sfs.f_type == 0x3153464a /* jfs */ 3932 || sfs.f_type == 0x3153464a /* jfs */
3933 || sfs.f_type == 0x9123683e /* btrfs */
3622 || sfs.f_type == 0x52654973 /* reiser3 */ 3934 || sfs.f_type == 0x52654973 /* reiser3 */
3623 || sfs.f_type == 0x01021994 /* tempfs */ 3935 || sfs.f_type == 0x01021994 /* tmpfs */
3624 || sfs.f_type == 0x58465342 /* xfs */)) 3936 || sfs.f_type == 0x58465342 /* xfs */))
3625 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3937 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3626 else 3938 else
3627 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3939 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3628 } 3940 }
3826#else 4138#else
3827# define EV_LSTAT(p,b) lstat (p, b) 4139# define EV_LSTAT(p,b) lstat (p, b)
3828#endif 4140#endif
3829 4141
3830void 4142void
3831ev_stat_stat (EV_P_ ev_stat *w) 4143ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3832{ 4144{
3833 if (lstat (w->path, &w->attr) < 0) 4145 if (lstat (w->path, &w->attr) < 0)
3834 w->attr.st_nlink = 0; 4146 w->attr.st_nlink = 0;
3835 else if (!w->attr.st_nlink) 4147 else if (!w->attr.st_nlink)
3836 w->attr.st_nlink = 1; 4148 w->attr.st_nlink = 1;
3875 ev_feed_event (EV_A_ w, EV_STAT); 4187 ev_feed_event (EV_A_ w, EV_STAT);
3876 } 4188 }
3877} 4189}
3878 4190
3879void 4191void
3880ev_stat_start (EV_P_ ev_stat *w) 4192ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3881{ 4193{
3882 if (expect_false (ev_is_active (w))) 4194 if (expect_false (ev_is_active (w)))
3883 return; 4195 return;
3884 4196
3885 ev_stat_stat (EV_A_ w); 4197 ev_stat_stat (EV_A_ w);
3906 4218
3907 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
3908} 4220}
3909 4221
3910void 4222void
3911ev_stat_stop (EV_P_ ev_stat *w) 4223ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3912{ 4224{
3913 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
3914 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
3915 return; 4227 return;
3916 4228
3932} 4244}
3933#endif 4245#endif
3934 4246
3935#if EV_IDLE_ENABLE 4247#if EV_IDLE_ENABLE
3936void 4248void
3937ev_idle_start (EV_P_ ev_idle *w) 4249ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3938{ 4250{
3939 if (expect_false (ev_is_active (w))) 4251 if (expect_false (ev_is_active (w)))
3940 return; 4252 return;
3941 4253
3942 pri_adjust (EV_A_ (W)w); 4254 pri_adjust (EV_A_ (W)w);
3955 4267
3956 EV_FREQUENT_CHECK; 4268 EV_FREQUENT_CHECK;
3957} 4269}
3958 4270
3959void 4271void
3960ev_idle_stop (EV_P_ ev_idle *w) 4272ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3961{ 4273{
3962 clear_pending (EV_A_ (W)w); 4274 clear_pending (EV_A_ (W)w);
3963 if (expect_false (!ev_is_active (w))) 4275 if (expect_false (!ev_is_active (w)))
3964 return; 4276 return;
3965 4277
3979} 4291}
3980#endif 4292#endif
3981 4293
3982#if EV_PREPARE_ENABLE 4294#if EV_PREPARE_ENABLE
3983void 4295void
3984ev_prepare_start (EV_P_ ev_prepare *w) 4296ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3985{ 4297{
3986 if (expect_false (ev_is_active (w))) 4298 if (expect_false (ev_is_active (w)))
3987 return; 4299 return;
3988 4300
3989 EV_FREQUENT_CHECK; 4301 EV_FREQUENT_CHECK;
3994 4306
3995 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
3996} 4308}
3997 4309
3998void 4310void
3999ev_prepare_stop (EV_P_ ev_prepare *w) 4311ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
4000{ 4312{
4001 clear_pending (EV_A_ (W)w); 4313 clear_pending (EV_A_ (W)w);
4002 if (expect_false (!ev_is_active (w))) 4314 if (expect_false (!ev_is_active (w)))
4003 return; 4315 return;
4004 4316
4017} 4329}
4018#endif 4330#endif
4019 4331
4020#if EV_CHECK_ENABLE 4332#if EV_CHECK_ENABLE
4021void 4333void
4022ev_check_start (EV_P_ ev_check *w) 4334ev_check_start (EV_P_ ev_check *w) EV_THROW
4023{ 4335{
4024 if (expect_false (ev_is_active (w))) 4336 if (expect_false (ev_is_active (w)))
4025 return; 4337 return;
4026 4338
4027 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
4032 4344
4033 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
4034} 4346}
4035 4347
4036void 4348void
4037ev_check_stop (EV_P_ ev_check *w) 4349ev_check_stop (EV_P_ ev_check *w) EV_THROW
4038{ 4350{
4039 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
4040 if (expect_false (!ev_is_active (w))) 4352 if (expect_false (!ev_is_active (w)))
4041 return; 4353 return;
4042 4354
4055} 4367}
4056#endif 4368#endif
4057 4369
4058#if EV_EMBED_ENABLE 4370#if EV_EMBED_ENABLE
4059void noinline 4371void noinline
4060ev_embed_sweep (EV_P_ ev_embed *w) 4372ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4061{ 4373{
4062 ev_run (w->other, EVRUN_NOWAIT); 4374 ev_run (w->other, EVRUN_NOWAIT);
4063} 4375}
4064 4376
4065static void 4377static void
4113 ev_idle_stop (EV_A_ idle); 4425 ev_idle_stop (EV_A_ idle);
4114} 4426}
4115#endif 4427#endif
4116 4428
4117void 4429void
4118ev_embed_start (EV_P_ ev_embed *w) 4430ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4119{ 4431{
4120 if (expect_false (ev_is_active (w))) 4432 if (expect_false (ev_is_active (w)))
4121 return; 4433 return;
4122 4434
4123 { 4435 {
4144 4456
4145 EV_FREQUENT_CHECK; 4457 EV_FREQUENT_CHECK;
4146} 4458}
4147 4459
4148void 4460void
4149ev_embed_stop (EV_P_ ev_embed *w) 4461ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4150{ 4462{
4151 clear_pending (EV_A_ (W)w); 4463 clear_pending (EV_A_ (W)w);
4152 if (expect_false (!ev_is_active (w))) 4464 if (expect_false (!ev_is_active (w)))
4153 return; 4465 return;
4154 4466
4164} 4476}
4165#endif 4477#endif
4166 4478
4167#if EV_FORK_ENABLE 4479#if EV_FORK_ENABLE
4168void 4480void
4169ev_fork_start (EV_P_ ev_fork *w) 4481ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4170{ 4482{
4171 if (expect_false (ev_is_active (w))) 4483 if (expect_false (ev_is_active (w)))
4172 return; 4484 return;
4173 4485
4174 EV_FREQUENT_CHECK; 4486 EV_FREQUENT_CHECK;
4179 4491
4180 EV_FREQUENT_CHECK; 4492 EV_FREQUENT_CHECK;
4181} 4493}
4182 4494
4183void 4495void
4184ev_fork_stop (EV_P_ ev_fork *w) 4496ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4185{ 4497{
4186 clear_pending (EV_A_ (W)w); 4498 clear_pending (EV_A_ (W)w);
4187 if (expect_false (!ev_is_active (w))) 4499 if (expect_false (!ev_is_active (w)))
4188 return; 4500 return;
4189 4501
4202} 4514}
4203#endif 4515#endif
4204 4516
4205#if EV_CLEANUP_ENABLE 4517#if EV_CLEANUP_ENABLE
4206void 4518void
4207ev_cleanup_start (EV_P_ ev_cleanup *w) 4519ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4208{ 4520{
4209 if (expect_false (ev_is_active (w))) 4521 if (expect_false (ev_is_active (w)))
4210 return; 4522 return;
4211 4523
4212 EV_FREQUENT_CHECK; 4524 EV_FREQUENT_CHECK;
4219 ev_unref (EV_A); 4531 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK; 4532 EV_FREQUENT_CHECK;
4221} 4533}
4222 4534
4223void 4535void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w) 4536ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4225{ 4537{
4226 clear_pending (EV_A_ (W)w); 4538 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w))) 4539 if (expect_false (!ev_is_active (w)))
4228 return; 4540 return;
4229 4541
4243} 4555}
4244#endif 4556#endif
4245 4557
4246#if EV_ASYNC_ENABLE 4558#if EV_ASYNC_ENABLE
4247void 4559void
4248ev_async_start (EV_P_ ev_async *w) 4560ev_async_start (EV_P_ ev_async *w) EV_THROW
4249{ 4561{
4250 if (expect_false (ev_is_active (w))) 4562 if (expect_false (ev_is_active (w)))
4251 return; 4563 return;
4252 4564
4253 w->sent = 0; 4565 w->sent = 0;
4262 4574
4263 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
4264} 4576}
4265 4577
4266void 4578void
4267ev_async_stop (EV_P_ ev_async *w) 4579ev_async_stop (EV_P_ ev_async *w) EV_THROW
4268{ 4580{
4269 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
4270 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
4271 return; 4583 return;
4272 4584
4283 4595
4284 EV_FREQUENT_CHECK; 4596 EV_FREQUENT_CHECK;
4285} 4597}
4286 4598
4287void 4599void
4288ev_async_send (EV_P_ ev_async *w) 4600ev_async_send (EV_P_ ev_async *w) EV_THROW
4289{ 4601{
4290 w->sent = 1; 4602 w->sent = 1;
4291 evpipe_write (EV_A_ &async_pending); 4603 evpipe_write (EV_A_ &async_pending);
4292} 4604}
4293#endif 4605#endif
4330 4642
4331 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4332} 4644}
4333 4645
4334void 4646void
4335ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4336{ 4648{
4337 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4338 4650
4339 if (expect_false (!once)) 4651 if (expect_false (!once))
4340 { 4652 {
4362 4674
4363/*****************************************************************************/ 4675/*****************************************************************************/
4364 4676
4365#if EV_WALK_ENABLE 4677#if EV_WALK_ENABLE
4366void ecb_cold 4678void ecb_cold
4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4368{ 4680{
4369 int i, j; 4681 int i, j;
4370 ev_watcher_list *wl, *wn; 4682 ev_watcher_list *wl, *wn;
4371 4683
4372 if (types & (EV_IO | EV_EMBED)) 4684 if (types & (EV_IO | EV_EMBED))

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