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Comparing libev/ev.c (file contents):
Revision 1.475 by sf-exg, Wed Apr 1 06:57:41 2015 UTC vs.
Revision 1.487 by root, Mon Oct 29 00:00:21 2018 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2018 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 *
162# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
163# endif 163# endif
164 164
165#endif 165#endif
166 166
167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
167#include <stdlib.h> 177#include <stdlib.h>
168#include <string.h> 178#include <string.h>
169#include <fcntl.h> 179#include <fcntl.h>
170#include <stddef.h> 180#include <stddef.h>
171 181
208# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
210# endif 220# endif
211# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
212#endif 222#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 223
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
223 225
224/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 227#if defined EV_NSIG
363 365
364#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif 368#endif
367 369
368#ifdef ANDROID 370#ifdef __ANDROID__
369/* supposedly, android doesn't typedef fd_mask */ 371/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT 372# undef EV_USE_SELECT
371# define EV_USE_SELECT 0 373# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL 375# undef EV_USE_CLOCK_SYSCALL
532 534
533#ifndef ECB_H 535#ifndef ECB_H
534#define ECB_H 536#define ECB_H
535 537
536/* 16 bits major, 16 bits minor */ 538/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010004 539#define ECB_VERSION 0x00010005
538 540
539#ifdef _WIN32 541#ifdef _WIN32
540 typedef signed char int8_t; 542 typedef signed char int8_t;
541 typedef unsigned char uint8_t; 543 typedef unsigned char uint8_t;
542 typedef signed short int16_t; 544 typedef signed short int16_t;
559 typedef uint32_t uintptr_t; 561 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t; 562 typedef int32_t intptr_t;
561 #endif 563 #endif
562#else 564#else
563 #include <inttypes.h> 565 #include <inttypes.h>
564 #if UINTMAX_MAX > 0xffffffffU 566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8 567 #define ECB_PTRSIZE 8
566 #else 568 #else
567 #define ECB_PTRSIZE 4 569 #define ECB_PTRSIZE 4
568 #endif 570 #endif
569#endif 571#endif
640 #define ECB_NO_SMP 1 642 #define ECB_NO_SMP 1
641#endif 643#endif
642 644
643#if ECB_NO_SMP 645#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0) 646 #define ECB_MEMORY_FENCE do { } while (0)
647#endif
648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
645#endif 656#endif
646 657
647#ifndef ECB_MEMORY_FENCE 658#ifndef ECB_MEMORY_FENCE
648 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
649 #if __i386 || __i386__ 660 #if __i386 || __i386__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
655 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
656 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
657 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
659 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
660 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
662 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
663 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
665 #elif __aarch64__ 684 #elif __aarch64__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
667 #elif (__sparc || __sparc__) && !__sparcv8 686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
671 #elif defined __s390__ || defined __s390x__ 690 #elif defined __s390__ || defined __s390x__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
844 #define ecb_deprecated __declspec (deprecated) 863 #define ecb_deprecated __declspec (deprecated)
845#else 864#else
846 #define ecb_deprecated ecb_attribute ((__deprecated__)) 865 #define ecb_deprecated ecb_attribute ((__deprecated__))
847#endif 866#endif
848 867
849#if __MSC_VER >= 1500 868#if _MSC_VER >= 1500
850 #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) 869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
851#elif ECB_GCC_VERSION(4,5) 870#elif ECB_GCC_VERSION(4,5)
852 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) 871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
853#else 872#else
854 #define ecb_deprecated_message(msg) ecb_deprecated 873 #define ecb_deprecated_message(msg) ecb_deprecated
863#define ecb_unused ecb_attribute ((__unused__)) 882#define ecb_unused ecb_attribute ((__unused__))
864#define ecb_const ecb_attribute ((__const__)) 883#define ecb_const ecb_attribute ((__const__))
865#define ecb_pure ecb_attribute ((__pure__)) 884#define ecb_pure ecb_attribute ((__pure__))
866 885
867#if ECB_C11 || __IBMC_NORETURN 886#if ECB_C11 || __IBMC_NORETURN
868 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */ 887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
869 #define ecb_noreturn _Noreturn 888 #define ecb_noreturn _Noreturn
870#elif ECB_CPP11 889#elif ECB_CPP11
871 #define ecb_noreturn [[noreturn]] 890 #define ecb_noreturn [[noreturn]]
872#elif _MSC_VER >= 1200 891#elif _MSC_VER >= 1200
873 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ 892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
910#else 929#else
911 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); 930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
912 ecb_function_ ecb_const int 931 ecb_function_ ecb_const int
913 ecb_ctz32 (uint32_t x) 932 ecb_ctz32 (uint32_t x)
914 { 933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
915 int r = 0; 939 int r = 0;
916 940
917 x &= ~x + 1; /* this isolates the lowest bit */ 941 x &= ~x + 1; /* this isolates the lowest bit */
918 942
919#if ECB_branchless_on_i386 943#if ECB_branchless_on_i386
929 if (x & 0xff00ff00) r += 8; 953 if (x & 0xff00ff00) r += 8;
930 if (x & 0xffff0000) r += 16; 954 if (x & 0xffff0000) r += 16;
931#endif 955#endif
932 956
933 return r; 957 return r;
958#endif
934 } 959 }
935 960
936 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); 961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
937 ecb_function_ ecb_const int 962 ecb_function_ ecb_const int
938 ecb_ctz64 (uint64_t x) 963 ecb_ctz64 (uint64_t x)
939 { 964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
940 int shift = x & 0xffffffffU ? 0 : 32; 970 int shift = x & 0xffffffff ? 0 : 32;
941 return ecb_ctz32 (x >> shift) + shift; 971 return ecb_ctz32 (x >> shift) + shift;
972#endif
942 } 973 }
943 974
944 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); 975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
945 ecb_function_ ecb_const int 976 ecb_function_ ecb_const int
946 ecb_popcount32 (uint32_t x) 977 ecb_popcount32 (uint32_t x)
954 } 985 }
955 986
956 ecb_function_ ecb_const int ecb_ld32 (uint32_t x); 987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
957 ecb_function_ ecb_const int ecb_ld32 (uint32_t x) 988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
958 { 989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
959 int r = 0; 995 int r = 0;
960 996
961 if (x >> 16) { x >>= 16; r += 16; } 997 if (x >> 16) { x >>= 16; r += 16; }
962 if (x >> 8) { x >>= 8; r += 8; } 998 if (x >> 8) { x >>= 8; r += 8; }
963 if (x >> 4) { x >>= 4; r += 4; } 999 if (x >> 4) { x >>= 4; r += 4; }
964 if (x >> 2) { x >>= 2; r += 2; } 1000 if (x >> 2) { x >>= 2; r += 2; }
965 if (x >> 1) { r += 1; } 1001 if (x >> 1) { r += 1; }
966 1002
967 return r; 1003 return r;
1004#endif
968 } 1005 }
969 1006
970 ecb_function_ ecb_const int ecb_ld64 (uint64_t x); 1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
971 ecb_function_ ecb_const int ecb_ld64 (uint64_t x) 1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
972 { 1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
973 int r = 0; 1015 int r = 0;
974 1016
975 if (x >> 32) { x >>= 32; r += 32; } 1017 if (x >> 32) { x >>= 32; r += 32; }
976 1018
977 return r + ecb_ld32 (x); 1019 return r + ecb_ld32 (x);
1020#endif
978 } 1021 }
979#endif 1022#endif
980 1023
981ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); 1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
982ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1039ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1040ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1041ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1042 1085
1043#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) 1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
1044 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
1045 #define ecb_bswap32(x) __builtin_bswap32 (x) 1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
1046 #define ecb_bswap64(x) __builtin_bswap64 (x) 1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1047#else 1099#else
1048 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); 1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1049 ecb_function_ ecb_const uint16_t 1101 ecb_function_ ecb_const uint16_t
1050 ecb_bswap16 (uint16_t x) 1102 ecb_bswap16 (uint16_t x)
1051 { 1103 {
1076#endif 1128#endif
1077 1129
1078/* try to tell the compiler that some condition is definitely true */ 1130/* try to tell the compiler that some condition is definitely true */
1079#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1080 1132
1081ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); 1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1082ecb_inline ecb_const unsigned char 1134ecb_inline ecb_const uint32_t
1083ecb_byteorder_helper (void) 1135ecb_byteorder_helper (void)
1084{ 1136{
1085 /* the union code still generates code under pressure in gcc, */ 1137 /* the union code still generates code under pressure in gcc, */
1086 /* but less than using pointers, and always seems to */ 1138 /* but less than using pointers, and always seems to */
1087 /* successfully return a constant. */ 1139 /* successfully return a constant. */
1088 /* the reason why we have this horrible preprocessor mess */ 1140 /* the reason why we have this horrible preprocessor mess */
1089 /* is to avoid it in all cases, at least on common architectures */ 1141 /* is to avoid it in all cases, at least on common architectures */
1090 /* or when using a recent enough gcc version (>= 4.6) */ 1142 /* or when using a recent enough gcc version (>= 4.6) */
1091#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1092 return 0x44;
1093#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1094 return 0x44; 1146 return 0x44332211;
1095#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1096 return 0x11; 1150 return 0x11223344;
1097#else 1151#else
1098 union 1152 union
1099 { 1153 {
1154 uint8_t c[4];
1100 uint32_t i; 1155 uint32_t u;
1101 uint8_t c;
1102 } u = { 0x11223344 }; 1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1103 return u.c; 1157 return u.u;
1104#endif 1158#endif
1105} 1159}
1106 1160
1107ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1108ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1109ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1110ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1111 1165
1112#if ECB_GCC_VERSION(3,0) || ECB_C99 1166#if ECB_GCC_VERSION(3,0) || ECB_C99
1113 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1114#else 1168#else
1115 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1139 return N; 1193 return N;
1140 } 1194 }
1141#else 1195#else
1142 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1143#endif 1197#endif
1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1144 1294
1145/*******************************************************************************/ 1295/*******************************************************************************/
1146/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1147 1297
1148/* basically, everything uses "ieee pure-endian" floating point numbers */ 1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1185 #define ECB_NAN ECB_INFINITY 1335 #define ECB_NAN ECB_INFINITY
1186 #endif 1336 #endif
1187 1337
1188 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L 1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1189 #define ecb_ldexpf(x,e) ldexpf ((x), (e)) 1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1190 #else 1341 #else
1191 #define ecb_ldexpf(x,e) (float) ldexp ((float) (x), (e)) 1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1192 #endif 1344 #endif
1193
1194 /* converts an ieee half/binary16 to a float */
1195 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1196 ecb_function_ ecb_const float
1197 ecb_binary16_to_float (uint16_t x)
1198 {
1199 int e = (x >> 10) & 0x1f;
1200 int m = x & 0x3ff;
1201 float r;
1202
1203 if (!e ) r = ecb_ldexpf (m , -24);
1204 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1205 else if (m ) r = ECB_NAN;
1206 else r = ECB_INFINITY;
1207
1208 return x & 0x8000 ? -r : r;
1209 }
1210 1345
1211 /* convert a float to ieee single/binary32 */ 1346 /* convert a float to ieee single/binary32 */
1212 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); 1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1213 ecb_function_ ecb_const uint32_t 1348 ecb_function_ ecb_const uint32_t
1214 ecb_float_to_binary32 (float x) 1349 ecb_float_to_binary32 (float x)
1225 if (x == 0e0f ) return 0x00000000U; 1360 if (x == 0e0f ) return 0x00000000U;
1226 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1227 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1228 if (x != x ) return 0x7fbfffffU; 1363 if (x != x ) return 0x7fbfffffU;
1229 1364
1230 m = frexpf (x, &e) * 0x1000000U; 1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1231 1366
1232 r = m & 0x80000000U; 1367 r = m & 0x80000000U;
1233 1368
1234 if (r) 1369 if (r)
1235 m = -m; 1370 m = -m;
1344 1479
1345 r = neg ? -r : r; 1480 r = neg ? -r : r;
1346 #endif 1481 #endif
1347 1482
1348 return r; 1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1349 } 1500 }
1350 1501
1351#endif 1502#endif
1352 1503
1353#endif 1504#endif
1378#define inline_size ecb_inline 1529#define inline_size ecb_inline
1379 1530
1380#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
1381# define inline_speed ecb_inline 1532# define inline_speed ecb_inline
1382#else 1533#else
1383# define inline_speed static noinline 1534# define inline_speed noinline static
1384#endif 1535#endif
1385 1536
1386#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1387 1538
1388#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
1435#else 1586#else
1436 1587
1437#include <float.h> 1588#include <float.h>
1438 1589
1439/* a floor() replacement function, should be independent of ev_tstamp type */ 1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1440static ev_tstamp noinline 1592static ev_tstamp
1441ev_floor (ev_tstamp v) 1593ev_floor (ev_tstamp v)
1442{ 1594{
1443 /* the choice of shift factor is not terribly important */ 1595 /* the choice of shift factor is not terribly important */
1444#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1445 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1477 1629
1478#ifdef __linux 1630#ifdef __linux
1479# include <sys/utsname.h> 1631# include <sys/utsname.h>
1480#endif 1632#endif
1481 1633
1482static unsigned int noinline ecb_cold 1634noinline ecb_cold
1635static unsigned int
1483ev_linux_version (void) 1636ev_linux_version (void)
1484{ 1637{
1485#ifdef __linux 1638#ifdef __linux
1486 unsigned int v = 0; 1639 unsigned int v = 0;
1487 struct utsname buf; 1640 struct utsname buf;
1516} 1669}
1517 1670
1518/*****************************************************************************/ 1671/*****************************************************************************/
1519 1672
1520#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
1521static void noinline ecb_cold 1674noinline ecb_cold
1675static void
1522ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
1523{ 1677{
1524 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
1525} 1679}
1526#endif 1680#endif
1527 1681
1528static void (*syserr_cb)(const char *msg) EV_THROW; 1682static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1529 1683
1530void ecb_cold 1684ecb_cold
1685void
1531ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1532{ 1687{
1533 syserr_cb = cb; 1688 syserr_cb = cb;
1534} 1689}
1535 1690
1536static void noinline ecb_cold 1691noinline ecb_cold
1692static void
1537ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
1538{ 1694{
1539 if (!msg) 1695 if (!msg)
1540 msg = "(libev) system error"; 1696 msg = "(libev) system error";
1541 1697
1554 abort (); 1710 abort ();
1555 } 1711 }
1556} 1712}
1557 1713
1558static void * 1714static void *
1559ev_realloc_emul (void *ptr, long size) EV_THROW 1715ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1560{ 1716{
1561 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
1562 * implement realloc (x, 0) (as required by both ansi c-89 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
1563 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1564 * recently, also (at least) fedora and debian started breaking it, 1720 * recently, also (at least) fedora and debian started breaking it,
1570 1726
1571 free (ptr); 1727 free (ptr);
1572 return 0; 1728 return 0;
1573} 1729}
1574 1730
1575static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1576 1732
1577void ecb_cold 1733ecb_cold
1734void
1578ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1579{ 1736{
1580 alloc = cb; 1737 alloc = cb;
1581} 1738}
1582 1739
1583inline_speed void * 1740inline_speed void *
1700 1857
1701/*****************************************************************************/ 1858/*****************************************************************************/
1702 1859
1703#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
1704ev_tstamp 1861ev_tstamp
1705ev_time (void) EV_THROW 1862ev_time (void) EV_NOEXCEPT
1706{ 1863{
1707#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
1708 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
1709 { 1866 {
1710 struct timespec ts; 1867 struct timespec ts;
1734 return ev_time (); 1891 return ev_time ();
1735} 1892}
1736 1893
1737#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
1738ev_tstamp 1895ev_tstamp
1739ev_now (EV_P) EV_THROW 1896ev_now (EV_P) EV_NOEXCEPT
1740{ 1897{
1741 return ev_rt_now; 1898 return ev_rt_now;
1742} 1899}
1743#endif 1900#endif
1744 1901
1745void 1902void
1746ev_sleep (ev_tstamp delay) EV_THROW 1903ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1747{ 1904{
1748 if (delay > 0.) 1905 if (delay > 0.)
1749 { 1906 {
1750#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
1751 struct timespec ts; 1908 struct timespec ts;
1752 1909
1753 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
1754 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
1755#elif defined _WIN32 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
1756 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
1757#else 1916#else
1758 struct timeval tv; 1917 struct timeval tv;
1759 1918
1760 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1791 } 1950 }
1792 1951
1793 return ncur; 1952 return ncur;
1794} 1953}
1795 1954
1796static void * noinline ecb_cold 1955noinline ecb_cold
1956static void *
1797array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
1798{ 1958{
1799 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
1800 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
1801} 1961}
1804 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1805 1965
1806#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
1807 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
1808 { \ 1968 { \
1809 int ecb_unused ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
1810 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
1811 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
1812 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
1813 } 1973 }
1814 1974
1826 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1827 1987
1828/*****************************************************************************/ 1988/*****************************************************************************/
1829 1989
1830/* dummy callback for pending events */ 1990/* dummy callback for pending events */
1831static void noinline 1991noinline
1992static void
1832pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
1833{ 1994{
1834} 1995}
1835 1996
1836void noinline 1997noinline
1998void
1837ev_feed_event (EV_P_ void *w, int revents) EV_THROW 1999ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1838{ 2000{
1839 W w_ = (W)w; 2001 W w_ = (W)w;
1840 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
1841 2003
1842 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
1903 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
1904 fd_event_nocheck (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
1905} 2067}
1906 2068
1907void 2069void
1908ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1909{ 2071{
1910 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
1911 fd_event_nocheck (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
1912} 2074}
1913 2075
1971 2133
1972 fdchangecnt = 0; 2134 fdchangecnt = 0;
1973} 2135}
1974 2136
1975/* something about the given fd changed */ 2137/* something about the given fd changed */
1976inline_size void 2138inline_size
2139void
1977fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1978{ 2141{
1979 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1980 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1981 2144
1986 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1987 } 2150 }
1988} 2151}
1989 2152
1990/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1991inline_speed void ecb_cold 2154inline_speed ecb_cold void
1992fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1993{ 2156{
1994 ev_io *w; 2157 ev_io *w;
1995 2158
1996 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
1999 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
2000 } 2163 }
2001} 2164}
2002 2165
2003/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
2004inline_size int ecb_cold 2167inline_size ecb_cold int
2005fd_valid (int fd) 2168fd_valid (int fd)
2006{ 2169{
2007#ifdef _WIN32 2170#ifdef _WIN32
2008 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
2009#else 2172#else
2010 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
2011#endif 2174#endif
2012} 2175}
2013 2176
2014/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
2015static void noinline ecb_cold 2178noinline ecb_cold
2179static void
2016fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
2017{ 2181{
2018 int fd; 2182 int fd;
2019 2183
2020 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
2022 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
2023 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
2024} 2188}
2025 2189
2026/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
2027static void noinline ecb_cold 2191noinline ecb_cold
2192static void
2028fd_enomem (EV_P) 2193fd_enomem (EV_P)
2029{ 2194{
2030 int fd; 2195 int fd;
2031 2196
2032 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
2036 break; 2201 break;
2037 } 2202 }
2038} 2203}
2039 2204
2040/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
2041static void noinline 2206noinline
2207static void
2042fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
2043{ 2209{
2044 int fd; 2210 int fd;
2045 2211
2046 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
2227 2393
2228/*****************************************************************************/ 2394/*****************************************************************************/
2229 2395
2230#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2231 2397
2232static void noinline ecb_cold 2398noinline ecb_cold
2399static void
2233evpipe_init (EV_P) 2400evpipe_init (EV_P)
2234{ 2401{
2235 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
2236 { 2403 {
2237 int fds [2]; 2404 int fds [2];
2308#endif 2475#endif
2309 { 2476 {
2310#ifdef _WIN32 2477#ifdef _WIN32
2311 WSABUF buf; 2478 WSABUF buf;
2312 DWORD sent; 2479 DWORD sent;
2313 buf.buf = &buf; 2480 buf.buf = (char *)&buf;
2314 buf.len = 1; 2481 buf.len = 1;
2315 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2316#else 2483#else
2317 write (evpipe [1], &(evpipe [1]), 1); 2484 write (evpipe [1], &(evpipe [1]), 1);
2318#endif 2485#endif
2390} 2557}
2391 2558
2392/*****************************************************************************/ 2559/*****************************************************************************/
2393 2560
2394void 2561void
2395ev_feed_signal (int signum) EV_THROW 2562ev_feed_signal (int signum) EV_NOEXCEPT
2396{ 2563{
2397#if EV_MULTIPLICITY 2564#if EV_MULTIPLICITY
2398 EV_P; 2565 EV_P;
2399 ECB_MEMORY_FENCE_ACQUIRE; 2566 ECB_MEMORY_FENCE_ACQUIRE;
2400 EV_A = signals [signum - 1].loop; 2567 EV_A = signals [signum - 1].loop;
2415#endif 2582#endif
2416 2583
2417 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
2418} 2585}
2419 2586
2420void noinline 2587noinline
2588void
2421ev_feed_signal_event (EV_P_ int signum) EV_THROW 2589ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2422{ 2590{
2423 WL w; 2591 WL w;
2424 2592
2425 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2426 return; 2594 return;
2542#endif 2710#endif
2543#if EV_USE_SELECT 2711#if EV_USE_SELECT
2544# include "ev_select.c" 2712# include "ev_select.c"
2545#endif 2713#endif
2546 2714
2547int ecb_cold 2715ecb_cold int
2548ev_version_major (void) EV_THROW 2716ev_version_major (void) EV_NOEXCEPT
2549{ 2717{
2550 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
2551} 2719}
2552 2720
2553int ecb_cold 2721ecb_cold int
2554ev_version_minor (void) EV_THROW 2722ev_version_minor (void) EV_NOEXCEPT
2555{ 2723{
2556 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
2557} 2725}
2558 2726
2559/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
2560int inline_size ecb_cold 2728inline_size ecb_cold int
2561enable_secure (void) 2729enable_secure (void)
2562{ 2730{
2563#ifdef _WIN32 2731#ifdef _WIN32
2564 return 0; 2732 return 0;
2565#else 2733#else
2566 return getuid () != geteuid () 2734 return getuid () != geteuid ()
2567 || getgid () != getegid (); 2735 || getgid () != getegid ();
2568#endif 2736#endif
2569} 2737}
2570 2738
2571unsigned int ecb_cold 2739ecb_cold
2740unsigned int
2572ev_supported_backends (void) EV_THROW 2741ev_supported_backends (void) EV_NOEXCEPT
2573{ 2742{
2574 unsigned int flags = 0; 2743 unsigned int flags = 0;
2575 2744
2576 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2577 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
2580 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2581 2750
2582 return flags; 2751 return flags;
2583} 2752}
2584 2753
2585unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2586ev_recommended_backends (void) EV_THROW 2756ev_recommended_backends (void) EV_NOEXCEPT
2587{ 2757{
2588 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
2589 2759
2590#ifndef __NetBSD__ 2760#ifndef __NetBSD__
2591 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
2602#endif 2772#endif
2603 2773
2604 return flags; 2774 return flags;
2605} 2775}
2606 2776
2607unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2608ev_embeddable_backends (void) EV_THROW 2779ev_embeddable_backends (void) EV_NOEXCEPT
2609{ 2780{
2610 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2611 2782
2612 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2613 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2615 2786
2616 return flags; 2787 return flags;
2617} 2788}
2618 2789
2619unsigned int 2790unsigned int
2620ev_backend (EV_P) EV_THROW 2791ev_backend (EV_P) EV_NOEXCEPT
2621{ 2792{
2622 return backend; 2793 return backend;
2623} 2794}
2624 2795
2625#if EV_FEATURE_API 2796#if EV_FEATURE_API
2626unsigned int 2797unsigned int
2627ev_iteration (EV_P) EV_THROW 2798ev_iteration (EV_P) EV_NOEXCEPT
2628{ 2799{
2629 return loop_count; 2800 return loop_count;
2630} 2801}
2631 2802
2632unsigned int 2803unsigned int
2633ev_depth (EV_P) EV_THROW 2804ev_depth (EV_P) EV_NOEXCEPT
2634{ 2805{
2635 return loop_depth; 2806 return loop_depth;
2636} 2807}
2637 2808
2638void 2809void
2639ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2640{ 2811{
2641 io_blocktime = interval; 2812 io_blocktime = interval;
2642} 2813}
2643 2814
2644void 2815void
2645ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2646{ 2817{
2647 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
2648} 2819}
2649 2820
2650void 2821void
2651ev_set_userdata (EV_P_ void *data) EV_THROW 2822ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2652{ 2823{
2653 userdata = data; 2824 userdata = data;
2654} 2825}
2655 2826
2656void * 2827void *
2657ev_userdata (EV_P) EV_THROW 2828ev_userdata (EV_P) EV_NOEXCEPT
2658{ 2829{
2659 return userdata; 2830 return userdata;
2660} 2831}
2661 2832
2662void 2833void
2663ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2664{ 2835{
2665 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
2666} 2837}
2667 2838
2668void 2839void
2669ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2670{ 2841{
2671 release_cb = release; 2842 release_cb = release;
2672 acquire_cb = acquire; 2843 acquire_cb = acquire;
2673} 2844}
2674#endif 2845#endif
2675 2846
2676/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
2677static void noinline ecb_cold 2848noinline ecb_cold
2849static void
2678loop_init (EV_P_ unsigned int flags) EV_THROW 2850loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2679{ 2851{
2680 if (!backend) 2852 if (!backend)
2681 { 2853 {
2682 origflags = flags; 2854 origflags = flags;
2683 2855
2769#endif 2941#endif
2770 } 2942 }
2771} 2943}
2772 2944
2773/* free up a loop structure */ 2945/* free up a loop structure */
2774void ecb_cold 2946ecb_cold
2947void
2775ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
2776{ 2949{
2777 int i; 2950 int i;
2778 2951
2779#if EV_MULTIPLICITY 2952#if EV_MULTIPLICITY
2900#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
2901 infy_fork (EV_A); 3074 infy_fork (EV_A);
2902#endif 3075#endif
2903 3076
2904#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2905 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
2906 { 3079 {
2907 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2908 3081
2909 ev_ref (EV_A); 3082 ev_ref (EV_A);
2910 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
2921 postfork = 0; 3094 postfork = 0;
2922} 3095}
2923 3096
2924#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
2925 3098
3099ecb_cold
2926struct ev_loop * ecb_cold 3100struct ev_loop *
2927ev_loop_new (unsigned int flags) EV_THROW 3101ev_loop_new (unsigned int flags) EV_NOEXCEPT
2928{ 3102{
2929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2930 3104
2931 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
2932 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
2939} 3113}
2940 3114
2941#endif /* multiplicity */ 3115#endif /* multiplicity */
2942 3116
2943#if EV_VERIFY 3117#if EV_VERIFY
2944static void noinline ecb_cold 3118noinline ecb_cold
3119static void
2945verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
2946{ 3121{
2947 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2948 3123
2949 if (w->pending) 3124 if (w->pending)
2950 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2951} 3126}
2952 3127
2953static void noinline ecb_cold 3128noinline ecb_cold
3129static void
2954verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
2955{ 3131{
2956 int i; 3132 int i;
2957 3133
2958 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
2963 3139
2964 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2965 } 3141 }
2966} 3142}
2967 3143
2968static void noinline ecb_cold 3144noinline ecb_cold
3145static void
2969array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
2970{ 3147{
2971 while (cnt--) 3148 while (cnt--)
2972 { 3149 {
2973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2976} 3153}
2977#endif 3154#endif
2978 3155
2979#if EV_FEATURE_API 3156#if EV_FEATURE_API
2980void ecb_cold 3157void ecb_cold
2981ev_verify (EV_P) EV_THROW 3158ev_verify (EV_P) EV_NOEXCEPT
2982{ 3159{
2983#if EV_VERIFY 3160#if EV_VERIFY
2984 int i; 3161 int i;
2985 WL w, w2; 3162 WL w, w2;
2986 3163
3062#endif 3239#endif
3063} 3240}
3064#endif 3241#endif
3065 3242
3066#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
3067struct ev_loop * ecb_cold 3245struct ev_loop *
3068#else 3246#else
3069int 3247int
3070#endif 3248#endif
3071ev_default_loop (unsigned int flags) EV_THROW 3249ev_default_loop (unsigned int flags) EV_NOEXCEPT
3072{ 3250{
3073 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
3074 { 3252 {
3075#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
3076 EV_P = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
3095 3273
3096 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
3097} 3275}
3098 3276
3099void 3277void
3100ev_loop_fork (EV_P) EV_THROW 3278ev_loop_fork (EV_P) EV_NOEXCEPT
3101{ 3279{
3102 postfork = 1; 3280 postfork = 1;
3103} 3281}
3104 3282
3105/*****************************************************************************/ 3283/*****************************************************************************/
3109{ 3287{
3110 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
3111} 3289}
3112 3290
3113unsigned int 3291unsigned int
3114ev_pending_count (EV_P) EV_THROW 3292ev_pending_count (EV_P) EV_NOEXCEPT
3115{ 3293{
3116 int pri; 3294 int pri;
3117 unsigned int count = 0; 3295 unsigned int count = 0;
3118 3296
3119 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
3120 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
3121 3299
3122 return count; 3300 return count;
3123} 3301}
3124 3302
3125void noinline 3303noinline
3304void
3126ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
3127{ 3306{
3128 pendingpri = NUMPRI; 3307 pendingpri = NUMPRI;
3129 3308
3130 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3309 do
3131 { 3310 {
3132 --pendingpri; 3311 --pendingpri;
3133 3312
3313 /* pendingpri possibly gets modified in the inner loop */
3134 while (pendingcnt [pendingpri]) 3314 while (pendingcnt [pendingpri])
3135 { 3315 {
3136 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3137 3317
3138 p->w->pending = 0; 3318 p->w->pending = 0;
3139 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
3140 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
3141 } 3321 }
3142 } 3322 }
3323 while (pendingpri);
3143} 3324}
3144 3325
3145#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
3146/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
3147/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
3205 } 3386 }
3206} 3387}
3207 3388
3208#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
3209 3390
3210static void noinline 3391noinline
3392static void
3211periodic_recalc (EV_P_ ev_periodic *w) 3393periodic_recalc (EV_P_ ev_periodic *w)
3212{ 3394{
3213 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3214 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3396 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3215 3397
3273 } 3455 }
3274} 3456}
3275 3457
3276/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
3277/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3459/* TODO: maybe ensure that at least one event happens when jumping forward? */
3278static void noinline ecb_cold 3460noinline ecb_cold
3461static void
3279periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
3280{ 3463{
3281 int i; 3464 int i;
3282 3465
3283 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
3296 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
3297} 3480}
3298#endif 3481#endif
3299 3482
3300/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
3301static void noinline ecb_cold 3484noinline ecb_cold
3485static void
3302timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
3303{ 3487{
3304 int i; 3488 int i;
3305 3489
3306 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
3553 3737
3554 return activecnt; 3738 return activecnt;
3555} 3739}
3556 3740
3557void 3741void
3558ev_break (EV_P_ int how) EV_THROW 3742ev_break (EV_P_ int how) EV_NOEXCEPT
3559{ 3743{
3560 loop_done = how; 3744 loop_done = how;
3561} 3745}
3562 3746
3563void 3747void
3564ev_ref (EV_P) EV_THROW 3748ev_ref (EV_P) EV_NOEXCEPT
3565{ 3749{
3566 ++activecnt; 3750 ++activecnt;
3567} 3751}
3568 3752
3569void 3753void
3570ev_unref (EV_P) EV_THROW 3754ev_unref (EV_P) EV_NOEXCEPT
3571{ 3755{
3572 --activecnt; 3756 --activecnt;
3573} 3757}
3574 3758
3575void 3759void
3576ev_now_update (EV_P) EV_THROW 3760ev_now_update (EV_P) EV_NOEXCEPT
3577{ 3761{
3578 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
3579} 3763}
3580 3764
3581void 3765void
3582ev_suspend (EV_P) EV_THROW 3766ev_suspend (EV_P) EV_NOEXCEPT
3583{ 3767{
3584 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
3585} 3769}
3586 3770
3587void 3771void
3588ev_resume (EV_P) EV_THROW 3772ev_resume (EV_P) EV_NOEXCEPT
3589{ 3773{
3590 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
3591 3775
3592 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
3593 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
3632 w->pending = 0; 3816 w->pending = 0;
3633 } 3817 }
3634} 3818}
3635 3819
3636int 3820int
3637ev_clear_pending (EV_P_ void *w) EV_THROW 3821ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3638{ 3822{
3639 W w_ = (W)w; 3823 W w_ = (W)w;
3640 int pending = w_->pending; 3824 int pending = w_->pending;
3641 3825
3642 if (expect_true (pending)) 3826 if (expect_true (pending))
3674 w->active = 0; 3858 w->active = 0;
3675} 3859}
3676 3860
3677/*****************************************************************************/ 3861/*****************************************************************************/
3678 3862
3679void noinline 3863noinline
3864void
3680ev_io_start (EV_P_ ev_io *w) EV_THROW 3865ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3681{ 3866{
3682 int fd = w->fd; 3867 int fd = w->fd;
3683 3868
3684 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
3685 return; 3870 return;
3700 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
3701 3886
3702 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
3703} 3888}
3704 3889
3705void noinline 3890noinline
3891void
3706ev_io_stop (EV_P_ ev_io *w) EV_THROW 3892ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3707{ 3893{
3708 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
3709 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
3710 return; 3896 return;
3711 3897
3719 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3720 3906
3721 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
3722} 3908}
3723 3909
3724void noinline 3910noinline
3911void
3725ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3912ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3726{ 3913{
3727 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3728 return; 3915 return;
3729 3916
3730 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
3743 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
3744 3931
3745 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3932 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3746} 3933}
3747 3934
3748void noinline 3935noinline
3936void
3749ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3937ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3750{ 3938{
3751 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3752 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3753 return; 3941 return;
3754 3942
3773 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
3774 3962
3775 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
3776} 3964}
3777 3965
3778void noinline 3966noinline
3967void
3779ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3968ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3780{ 3969{
3781 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3782 3971
3783 clear_pending (EV_A_ (W)w); 3972 clear_pending (EV_A_ (W)w);
3784 3973
3801 3990
3802 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
3803} 3992}
3804 3993
3805ev_tstamp 3994ev_tstamp
3806ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 3995ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3807{ 3996{
3808 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3809} 3998}
3810 3999
3811#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
3812void noinline 4001noinline
4002void
3813ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3814{ 4004{
3815 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
3816 return; 4006 return;
3817 4007
3818 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
3837 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3838 4028
3839 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4029 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3840} 4030}
3841 4031
3842void noinline 4032noinline
4033void
3843ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3844{ 4035{
3845 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
3846 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
3847 return; 4038 return;
3848 4039
3865 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
3866 4057
3867 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
3868} 4059}
3869 4060
3870void noinline 4061noinline
4062void
3871ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3872{ 4064{
3873 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
3874 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
3875 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
3876} 4068}
3880# define SA_RESTART 0 4072# define SA_RESTART 0
3881#endif 4073#endif
3882 4074
3883#if EV_SIGNAL_ENABLE 4075#if EV_SIGNAL_ENABLE
3884 4076
3885void noinline 4077noinline
4078void
3886ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4079ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3887{ 4080{
3888 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
3889 return; 4082 return;
3890 4083
3891 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4084 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3962 } 4155 }
3963 4156
3964 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3965} 4158}
3966 4159
3967void noinline 4160noinline
4161void
3968ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4162ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3969{ 4163{
3970 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
3971 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
3972 return; 4166 return;
3973 4167
4004#endif 4198#endif
4005 4199
4006#if EV_CHILD_ENABLE 4200#if EV_CHILD_ENABLE
4007 4201
4008void 4202void
4009ev_child_start (EV_P_ ev_child *w) EV_THROW 4203ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4010{ 4204{
4011#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
4012 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4206 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
4013#endif 4207#endif
4014 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
4021 4215
4022 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
4023} 4217}
4024 4218
4025void 4219void
4026ev_child_stop (EV_P_ ev_child *w) EV_THROW 4220ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4027{ 4221{
4028 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
4029 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
4030 return; 4224 return;
4031 4225
4048 4242
4049#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
4050#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4051#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
4052 4246
4053static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4054 4248
4055#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
4056 4250
4057/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4251/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4058# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4059 4253
4060static void noinline 4254noinline
4255static void
4061infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
4062{ 4257{
4063 w->wd = inotify_add_watch (fs_fd, w->path, 4258 w->wd = inotify_add_watch (fs_fd, w->path,
4064 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4065 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4260 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4129 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4130 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
4131 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4132} 4327}
4133 4328
4134static void noinline 4329noinline
4330static void
4135infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
4136{ 4332{
4137 int slot; 4333 int slot;
4138 int wd = w->wd; 4334 int wd = w->wd;
4139 4335
4146 4342
4147 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
4148 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
4149} 4345}
4150 4346
4151static void noinline 4347noinline
4348static void
4152infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4153{ 4350{
4154 if (slot < 0) 4351 if (slot < 0)
4155 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
4156 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
4192 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4193 ofs += sizeof (struct inotify_event) + ev->len; 4390 ofs += sizeof (struct inotify_event) + ev->len;
4194 } 4391 }
4195} 4392}
4196 4393
4197inline_size void ecb_cold 4394inline_size ecb_cold
4395void
4198ev_check_2625 (EV_P) 4396ev_check_2625 (EV_P)
4199{ 4397{
4200 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
4201 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4399 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4202 */ 4400 */
4292#else 4490#else
4293# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
4294#endif 4492#endif
4295 4493
4296void 4494void
4297ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4495ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4298{ 4496{
4299 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
4300 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
4301 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
4302 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
4303} 4501}
4304 4502
4305static void noinline 4503noinline
4504static void
4306stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4307{ 4506{
4308 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4309 4508
4310 ev_statdata prev = w->attr; 4509 ev_statdata prev = w->attr;
4341 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
4342 } 4541 }
4343} 4542}
4344 4543
4345void 4544void
4346ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4545ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4347{ 4546{
4348 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
4349 return; 4548 return;
4350 4549
4351 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
4372 4571
4373 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
4374} 4573}
4375 4574
4376void 4575void
4377ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4576ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4378{ 4577{
4379 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
4380 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
4381 return; 4580 return;
4382 4581
4398} 4597}
4399#endif 4598#endif
4400 4599
4401#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
4402void 4601void
4403ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4602ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4404{ 4603{
4405 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
4406 return; 4605 return;
4407 4606
4408 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
4421 4620
4422 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
4423} 4622}
4424 4623
4425void 4624void
4426ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4625ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4427{ 4626{
4428 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
4429 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
4430 return; 4629 return;
4431 4630
4445} 4644}
4446#endif 4645#endif
4447 4646
4448#if EV_PREPARE_ENABLE 4647#if EV_PREPARE_ENABLE
4449void 4648void
4450ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4451{ 4650{
4452 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
4453 return; 4652 return;
4454 4653
4455 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
4460 4659
4461 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
4462} 4661}
4463 4662
4464void 4663void
4465ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4466{ 4665{
4467 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
4468 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
4469 return; 4668 return;
4470 4669
4483} 4682}
4484#endif 4683#endif
4485 4684
4486#if EV_CHECK_ENABLE 4685#if EV_CHECK_ENABLE
4487void 4686void
4488ev_check_start (EV_P_ ev_check *w) EV_THROW 4687ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4489{ 4688{
4490 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
4491 return; 4690 return;
4492 4691
4493 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
4498 4697
4499 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
4500} 4699}
4501 4700
4502void 4701void
4503ev_check_stop (EV_P_ ev_check *w) EV_THROW 4702ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4504{ 4703{
4505 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
4506 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
4507 return; 4706 return;
4508 4707
4520 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
4521} 4720}
4522#endif 4721#endif
4523 4722
4524#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
4525void noinline 4724noinline
4725void
4526ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4527{ 4727{
4528 ev_run (w->other, EVRUN_NOWAIT); 4728 ev_run (w->other, EVRUN_NOWAIT);
4529} 4729}
4530 4730
4531static void 4731static void
4579 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
4580} 4780}
4581#endif 4781#endif
4582 4782
4583void 4783void
4584ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4784ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4585{ 4785{
4586 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
4587 return; 4787 return;
4588 4788
4589 { 4789 {
4610 4810
4611 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
4612} 4812}
4613 4813
4614void 4814void
4615ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4815ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4616{ 4816{
4617 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
4618 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
4619 return; 4819 return;
4620 4820
4630} 4830}
4631#endif 4831#endif
4632 4832
4633#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
4634void 4834void
4635ev_fork_start (EV_P_ ev_fork *w) EV_THROW 4835ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4636{ 4836{
4637 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
4638 return; 4838 return;
4639 4839
4640 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
4645 4845
4646 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
4647} 4847}
4648 4848
4649void 4849void
4650ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 4850ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4651{ 4851{
4652 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
4653 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
4654 return; 4854 return;
4655 4855
4668} 4868}
4669#endif 4869#endif
4670 4870
4671#if EV_CLEANUP_ENABLE 4871#if EV_CLEANUP_ENABLE
4672void 4872void
4673ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4674{ 4874{
4675 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
4676 return; 4876 return;
4677 4877
4678 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
4685 ev_unref (EV_A); 4885 ev_unref (EV_A);
4686 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
4687} 4887}
4688 4888
4689void 4889void
4690ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4691{ 4891{
4692 clear_pending (EV_A_ (W)w); 4892 clear_pending (EV_A_ (W)w);
4693 if (expect_false (!ev_is_active (w))) 4893 if (expect_false (!ev_is_active (w)))
4694 return; 4894 return;
4695 4895
4709} 4909}
4710#endif 4910#endif
4711 4911
4712#if EV_ASYNC_ENABLE 4912#if EV_ASYNC_ENABLE
4713void 4913void
4714ev_async_start (EV_P_ ev_async *w) EV_THROW 4914ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4715{ 4915{
4716 if (expect_false (ev_is_active (w))) 4916 if (expect_false (ev_is_active (w)))
4717 return; 4917 return;
4718 4918
4719 w->sent = 0; 4919 w->sent = 0;
4728 4928
4729 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
4730} 4930}
4731 4931
4732void 4932void
4733ev_async_stop (EV_P_ ev_async *w) EV_THROW 4933ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4734{ 4934{
4735 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
4736 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
4737 return; 4937 return;
4738 4938
4749 4949
4750 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
4751} 4951}
4752 4952
4753void 4953void
4754ev_async_send (EV_P_ ev_async *w) EV_THROW 4954ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4755{ 4955{
4756 w->sent = 1; 4956 w->sent = 1;
4757 evpipe_write (EV_A_ &async_pending); 4957 evpipe_write (EV_A_ &async_pending);
4758} 4958}
4759#endif 4959#endif
4796 4996
4797 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4997 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4798} 4998}
4799 4999
4800void 5000void
4801ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5001ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4802{ 5002{
4803 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5003 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4804 5004
4805 if (expect_false (!once)) 5005 if (expect_false (!once))
4806 { 5006 {
4827} 5027}
4828 5028
4829/*****************************************************************************/ 5029/*****************************************************************************/
4830 5030
4831#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
4832void ecb_cold 5032ecb_cold
5033void
4833ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5034ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4834{ 5035{
4835 int i, j; 5036 int i, j;
4836 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
4837 5038
4838 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))

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