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Comparing libev/ev.c (file contents):
Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC vs.
Revision 1.488 by root, Fri Dec 21 06:57:09 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
607 #define ECB_CLANG_EXTENSION(x) 0 609 #define ECB_CLANG_EXTENSION(x) 0
608#endif 610#endif
609 611
610#define ECB_CPP (__cplusplus+0) 612#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L) 613#define ECB_CPP11 (__cplusplus >= 201103L)
614#define ECB_CPP14 (__cplusplus >= 201402L)
615#define ECB_CPP17 (__cplusplus >= 201703L)
612 616
613#if ECB_CPP 617#if ECB_CPP
614 #define ECB_C 0 618 #define ECB_C 0
615 #define ECB_STDC_VERSION 0 619 #define ECB_STDC_VERSION 0
616#else 620#else
618 #define ECB_STDC_VERSION __STDC_VERSION__ 622 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif 623#endif
620 624
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 625#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 626#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
627#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
623 628
624#if ECB_CPP 629#if ECB_CPP
625 #define ECB_EXTERN_C extern "C" 630 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 631 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END } 632 #define ECB_EXTERN_C_END }
645#endif 650#endif
646 651
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ 652/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP 653#if __xlC__ && ECB_CPP
649 #include <builtins.h> 654 #include <builtins.h>
655#endif
656
657#if 1400 <= _MSC_VER
658 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
650#endif 659#endif
651 660
652#ifndef ECB_MEMORY_FENCE 661#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 662 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
654 #if __i386 || __i386__ 663 #if __i386 || __i386__
655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
656 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 665 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
658 #elif ECB_GCC_AMD64 667 #elif ECB_GCC_AMD64
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
662 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 671 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
673 #elif defined __ARM_ARCH_2__ \
674 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
675 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
676 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
677 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
678 || defined __ARM_ARCH_5TEJ__
679 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
664 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 680 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
665 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 681 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
682 || defined __ARM_ARCH_6T2__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
667 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 684 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
668 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 685 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 686 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
670 #elif __aarch64__ 687 #elif __aarch64__
671 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
672 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) 689 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
673 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
915#else 932#else
916 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); 933 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
917 ecb_function_ ecb_const int 934 ecb_function_ ecb_const int
918 ecb_ctz32 (uint32_t x) 935 ecb_ctz32 (uint32_t x)
919 { 936 {
937#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
938 unsigned long r;
939 _BitScanForward (&r, x);
940 return (int)r;
941#else
920 int r = 0; 942 int r = 0;
921 943
922 x &= ~x + 1; /* this isolates the lowest bit */ 944 x &= ~x + 1; /* this isolates the lowest bit */
923 945
924#if ECB_branchless_on_i386 946#if ECB_branchless_on_i386
934 if (x & 0xff00ff00) r += 8; 956 if (x & 0xff00ff00) r += 8;
935 if (x & 0xffff0000) r += 16; 957 if (x & 0xffff0000) r += 16;
936#endif 958#endif
937 959
938 return r; 960 return r;
961#endif
939 } 962 }
940 963
941 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); 964 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
942 ecb_function_ ecb_const int 965 ecb_function_ ecb_const int
943 ecb_ctz64 (uint64_t x) 966 ecb_ctz64 (uint64_t x)
944 { 967 {
968#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
969 unsigned long r;
970 _BitScanForward64 (&r, x);
971 return (int)r;
972#else
945 int shift = x & 0xffffffffU ? 0 : 32; 973 int shift = x & 0xffffffff ? 0 : 32;
946 return ecb_ctz32 (x >> shift) + shift; 974 return ecb_ctz32 (x >> shift) + shift;
975#endif
947 } 976 }
948 977
949 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); 978 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
950 ecb_function_ ecb_const int 979 ecb_function_ ecb_const int
951 ecb_popcount32 (uint32_t x) 980 ecb_popcount32 (uint32_t x)
959 } 988 }
960 989
961 ecb_function_ ecb_const int ecb_ld32 (uint32_t x); 990 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
962 ecb_function_ ecb_const int ecb_ld32 (uint32_t x) 991 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
963 { 992 {
993#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanReverse (&r, x);
996 return (int)r;
997#else
964 int r = 0; 998 int r = 0;
965 999
966 if (x >> 16) { x >>= 16; r += 16; } 1000 if (x >> 16) { x >>= 16; r += 16; }
967 if (x >> 8) { x >>= 8; r += 8; } 1001 if (x >> 8) { x >>= 8; r += 8; }
968 if (x >> 4) { x >>= 4; r += 4; } 1002 if (x >> 4) { x >>= 4; r += 4; }
969 if (x >> 2) { x >>= 2; r += 2; } 1003 if (x >> 2) { x >>= 2; r += 2; }
970 if (x >> 1) { r += 1; } 1004 if (x >> 1) { r += 1; }
971 1005
972 return r; 1006 return r;
1007#endif
973 } 1008 }
974 1009
975 ecb_function_ ecb_const int ecb_ld64 (uint64_t x); 1010 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
976 ecb_function_ ecb_const int ecb_ld64 (uint64_t x) 1011 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
977 { 1012 {
1013#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1014 unsigned long r;
1015 _BitScanReverse64 (&r, x);
1016 return (int)r;
1017#else
978 int r = 0; 1018 int r = 0;
979 1019
980 if (x >> 32) { x >>= 32; r += 32; } 1020 if (x >> 32) { x >>= 32; r += 32; }
981 1021
982 return r + ecb_ld32 (x); 1022 return r + ecb_ld32 (x);
1023#endif
983 } 1024 }
984#endif 1025#endif
985 1026
986ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); 1027ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
987ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1028ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1090#endif 1131#endif
1091 1132
1092/* try to tell the compiler that some condition is definitely true */ 1133/* try to tell the compiler that some condition is definitely true */
1093#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1134#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1094 1135
1095ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); 1136ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1096ecb_inline ecb_const unsigned char 1137ecb_inline ecb_const uint32_t
1097ecb_byteorder_helper (void) 1138ecb_byteorder_helper (void)
1098{ 1139{
1099 /* the union code still generates code under pressure in gcc, */ 1140 /* the union code still generates code under pressure in gcc, */
1100 /* but less than using pointers, and always seems to */ 1141 /* but less than using pointers, and always seems to */
1101 /* successfully return a constant. */ 1142 /* successfully return a constant. */
1102 /* the reason why we have this horrible preprocessor mess */ 1143 /* the reason why we have this horrible preprocessor mess */
1103 /* is to avoid it in all cases, at least on common architectures */ 1144 /* is to avoid it in all cases, at least on common architectures */
1104 /* or when using a recent enough gcc version (>= 4.6) */ 1145 /* or when using a recent enough gcc version (>= 4.6) */
1105#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1106 return 0x44;
1107#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1146#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1147 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1148 #define ECB_LITTLE_ENDIAN 1
1108 return 0x44; 1149 return 0x44332211;
1109#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1150#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1151 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1152 #define ECB_BIG_ENDIAN 1
1110 return 0x11; 1153 return 0x11223344;
1111#else 1154#else
1112 union 1155 union
1113 { 1156 {
1157 uint8_t c[4];
1114 uint32_t i; 1158 uint32_t u;
1115 uint8_t c;
1116 } u = { 0x11223344 }; 1159 } u = { 0x11, 0x22, 0x33, 0x44 };
1117 return u.c; 1160 return u.u;
1118#endif 1161#endif
1119} 1162}
1120 1163
1121ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1164ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1122ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1165ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1123ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1166ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1124ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1167ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1125 1168
1126#if ECB_GCC_VERSION(3,0) || ECB_C99 1169#if ECB_GCC_VERSION(3,0) || ECB_C99
1127 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1170 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1128#else 1171#else
1129 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1172 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1153 return N; 1196 return N;
1154 } 1197 }
1155#else 1198#else
1156 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1199 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1157#endif 1200#endif
1201
1202ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1203ecb_function_ ecb_const uint32_t
1204ecb_binary16_to_binary32 (uint32_t x)
1205{
1206 unsigned int s = (x & 0x8000) << (31 - 15);
1207 int e = (x >> 10) & 0x001f;
1208 unsigned int m = x & 0x03ff;
1209
1210 if (ecb_expect_false (e == 31))
1211 /* infinity or NaN */
1212 e = 255 - (127 - 15);
1213 else if (ecb_expect_false (!e))
1214 {
1215 if (ecb_expect_true (!m))
1216 /* zero, handled by code below by forcing e to 0 */
1217 e = 0 - (127 - 15);
1218 else
1219 {
1220 /* subnormal, renormalise */
1221 unsigned int s = 10 - ecb_ld32 (m);
1222
1223 m = (m << s) & 0x3ff; /* mask implicit bit */
1224 e -= s - 1;
1225 }
1226 }
1227
1228 /* e and m now are normalised, or zero, (or inf or nan) */
1229 e += 127 - 15;
1230
1231 return s | (e << 23) | (m << (23 - 10));
1232}
1233
1234ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1235ecb_function_ ecb_const uint16_t
1236ecb_binary32_to_binary16 (uint32_t x)
1237{
1238 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1239 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1240 unsigned int m = x & 0x007fffff;
1241
1242 x &= 0x7fffffff;
1243
1244 /* if it's within range of binary16 normals, use fast path */
1245 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1246 {
1247 /* mantissa round-to-even */
1248 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1249
1250 /* handle overflow */
1251 if (ecb_expect_false (m >= 0x00800000))
1252 {
1253 m >>= 1;
1254 e += 1;
1255 }
1256
1257 return s | (e << 10) | (m >> (23 - 10));
1258 }
1259
1260 /* handle large numbers and infinity */
1261 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1262 return s | 0x7c00;
1263
1264 /* handle zero, subnormals and small numbers */
1265 if (ecb_expect_true (x < 0x38800000))
1266 {
1267 /* zero */
1268 if (ecb_expect_true (!x))
1269 return s;
1270
1271 /* handle subnormals */
1272
1273 /* too small, will be zero */
1274 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1275 return s;
1276
1277 m |= 0x00800000; /* make implicit bit explicit */
1278
1279 /* very tricky - we need to round to the nearest e (+10) bit value */
1280 {
1281 unsigned int bits = 14 - e;
1282 unsigned int half = (1 << (bits - 1)) - 1;
1283 unsigned int even = (m >> bits) & 1;
1284
1285 /* if this overflows, we will end up with a normalised number */
1286 m = (m + half + even) >> bits;
1287 }
1288
1289 return s | m;
1290 }
1291
1292 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1293 m >>= 13;
1294
1295 return s | 0x7c00 | m | !m;
1296}
1158 1297
1159/*******************************************************************************/ 1298/*******************************************************************************/
1160/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1299/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1161 1300
1162/* basically, everything uses "ieee pure-endian" floating point numbers */ 1301/* basically, everything uses "ieee pure-endian" floating point numbers */
1205 #else 1344 #else
1206 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) 1345 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1207 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) 1346 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1208 #endif 1347 #endif
1209 1348
1210 /* converts an ieee half/binary16 to a float */
1211 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1212 ecb_function_ ecb_const float
1213 ecb_binary16_to_float (uint16_t x)
1214 {
1215 int e = (x >> 10) & 0x1f;
1216 int m = x & 0x3ff;
1217 float r;
1218
1219 if (!e ) r = ecb_ldexpf (m , -24);
1220 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1221 else if (m ) r = ECB_NAN;
1222 else r = ECB_INFINITY;
1223
1224 return x & 0x8000 ? -r : r;
1225 }
1226
1227 /* convert a float to ieee single/binary32 */ 1349 /* convert a float to ieee single/binary32 */
1228 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); 1350 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1229 ecb_function_ ecb_const uint32_t 1351 ecb_function_ ecb_const uint32_t
1230 ecb_float_to_binary32 (float x) 1352 ecb_float_to_binary32 (float x)
1231 { 1353 {
1360 1482
1361 r = neg ? -r : r; 1483 r = neg ? -r : r;
1362 #endif 1484 #endif
1363 1485
1364 return r; 1486 return r;
1487 }
1488
1489 /* convert a float to ieee half/binary16 */
1490 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1491 ecb_function_ ecb_const uint16_t
1492 ecb_float_to_binary16 (float x)
1493 {
1494 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1495 }
1496
1497 /* convert an ieee half/binary16 to float */
1498 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1499 ecb_function_ ecb_const float
1500 ecb_binary16_to_float (uint16_t x)
1501 {
1502 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1365 } 1503 }
1366 1504
1367#endif 1505#endif
1368 1506
1369#endif 1507#endif
1394#define inline_size ecb_inline 1532#define inline_size ecb_inline
1395 1533
1396#if EV_FEATURE_CODE 1534#if EV_FEATURE_CODE
1397# define inline_speed ecb_inline 1535# define inline_speed ecb_inline
1398#else 1536#else
1399# define inline_speed static noinline 1537# define inline_speed noinline static
1400#endif 1538#endif
1401 1539
1402#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1540#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1403 1541
1404#if EV_MINPRI == EV_MAXPRI 1542#if EV_MINPRI == EV_MAXPRI
1451#else 1589#else
1452 1590
1453#include <float.h> 1591#include <float.h>
1454 1592
1455/* a floor() replacement function, should be independent of ev_tstamp type */ 1593/* a floor() replacement function, should be independent of ev_tstamp type */
1594noinline
1456static ev_tstamp noinline 1595static ev_tstamp
1457ev_floor (ev_tstamp v) 1596ev_floor (ev_tstamp v)
1458{ 1597{
1459 /* the choice of shift factor is not terribly important */ 1598 /* the choice of shift factor is not terribly important */
1460#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1599#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1461 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1600 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1493 1632
1494#ifdef __linux 1633#ifdef __linux
1495# include <sys/utsname.h> 1634# include <sys/utsname.h>
1496#endif 1635#endif
1497 1636
1498static unsigned int noinline ecb_cold 1637noinline ecb_cold
1638static unsigned int
1499ev_linux_version (void) 1639ev_linux_version (void)
1500{ 1640{
1501#ifdef __linux 1641#ifdef __linux
1502 unsigned int v = 0; 1642 unsigned int v = 0;
1503 struct utsname buf; 1643 struct utsname buf;
1532} 1672}
1533 1673
1534/*****************************************************************************/ 1674/*****************************************************************************/
1535 1675
1536#if EV_AVOID_STDIO 1676#if EV_AVOID_STDIO
1537static void noinline ecb_cold 1677noinline ecb_cold
1678static void
1538ev_printerr (const char *msg) 1679ev_printerr (const char *msg)
1539{ 1680{
1540 write (STDERR_FILENO, msg, strlen (msg)); 1681 write (STDERR_FILENO, msg, strlen (msg));
1541} 1682}
1542#endif 1683#endif
1543 1684
1544static void (*syserr_cb)(const char *msg) EV_THROW; 1685static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1545 1686
1546void ecb_cold 1687ecb_cold
1688void
1547ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1689ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1548{ 1690{
1549 syserr_cb = cb; 1691 syserr_cb = cb;
1550} 1692}
1551 1693
1552static void noinline ecb_cold 1694noinline ecb_cold
1695static void
1553ev_syserr (const char *msg) 1696ev_syserr (const char *msg)
1554{ 1697{
1555 if (!msg) 1698 if (!msg)
1556 msg = "(libev) system error"; 1699 msg = "(libev) system error";
1557 1700
1570 abort (); 1713 abort ();
1571 } 1714 }
1572} 1715}
1573 1716
1574static void * 1717static void *
1575ev_realloc_emul (void *ptr, long size) EV_THROW 1718ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1576{ 1719{
1577 /* some systems, notably openbsd and darwin, fail to properly 1720 /* some systems, notably openbsd and darwin, fail to properly
1578 * implement realloc (x, 0) (as required by both ansi c-89 and 1721 * implement realloc (x, 0) (as required by both ansi c-89 and
1579 * the single unix specification, so work around them here. 1722 * the single unix specification, so work around them here.
1580 * recently, also (at least) fedora and debian started breaking it, 1723 * recently, also (at least) fedora and debian started breaking it,
1586 1729
1587 free (ptr); 1730 free (ptr);
1588 return 0; 1731 return 0;
1589} 1732}
1590 1733
1591static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1734static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1592 1735
1593void ecb_cold 1736ecb_cold
1737void
1594ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1738ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1595{ 1739{
1596 alloc = cb; 1740 alloc = cb;
1597} 1741}
1598 1742
1599inline_speed void * 1743inline_speed void *
1716 1860
1717/*****************************************************************************/ 1861/*****************************************************************************/
1718 1862
1719#ifndef EV_HAVE_EV_TIME 1863#ifndef EV_HAVE_EV_TIME
1720ev_tstamp 1864ev_tstamp
1721ev_time (void) EV_THROW 1865ev_time (void) EV_NOEXCEPT
1722{ 1866{
1723#if EV_USE_REALTIME 1867#if EV_USE_REALTIME
1724 if (expect_true (have_realtime)) 1868 if (expect_true (have_realtime))
1725 { 1869 {
1726 struct timespec ts; 1870 struct timespec ts;
1750 return ev_time (); 1894 return ev_time ();
1751} 1895}
1752 1896
1753#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1754ev_tstamp 1898ev_tstamp
1755ev_now (EV_P) EV_THROW 1899ev_now (EV_P) EV_NOEXCEPT
1756{ 1900{
1757 return ev_rt_now; 1901 return ev_rt_now;
1758} 1902}
1759#endif 1903#endif
1760 1904
1761void 1905void
1762ev_sleep (ev_tstamp delay) EV_THROW 1906ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1763{ 1907{
1764 if (delay > 0.) 1908 if (delay > 0.)
1765 { 1909 {
1766#if EV_USE_NANOSLEEP 1910#if EV_USE_NANOSLEEP
1767 struct timespec ts; 1911 struct timespec ts;
1768 1912
1769 EV_TS_SET (ts, delay); 1913 EV_TS_SET (ts, delay);
1770 nanosleep (&ts, 0); 1914 nanosleep (&ts, 0);
1771#elif defined _WIN32 1915#elif defined _WIN32
1916 /* maybe this should round up, as ms is very low resolution */
1917 /* compared to select (µs) or nanosleep (ns) */
1772 Sleep ((unsigned long)(delay * 1e3)); 1918 Sleep ((unsigned long)(delay * 1e3));
1773#else 1919#else
1774 struct timeval tv; 1920 struct timeval tv;
1775 1921
1776 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1922 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1807 } 1953 }
1808 1954
1809 return ncur; 1955 return ncur;
1810} 1956}
1811 1957
1812static void * noinline ecb_cold 1958noinline ecb_cold
1959static void *
1813array_realloc (int elem, void *base, int *cur, int cnt) 1960array_realloc (int elem, void *base, int *cur, int cnt)
1814{ 1961{
1815 *cur = array_nextsize (elem, *cur, cnt); 1962 *cur = array_nextsize (elem, *cur, cnt);
1816 return ev_realloc (base, elem * *cur); 1963 return ev_realloc (base, elem * *cur);
1817} 1964}
1820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1967 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1821 1968
1822#define array_needsize(type,base,cur,cnt,init) \ 1969#define array_needsize(type,base,cur,cnt,init) \
1823 if (expect_false ((cnt) > (cur))) \ 1970 if (expect_false ((cnt) > (cur))) \
1824 { \ 1971 { \
1825 int ecb_unused ocur_ = (cur); \ 1972 ecb_unused int ocur_ = (cur); \
1826 (base) = (type *)array_realloc \ 1973 (base) = (type *)array_realloc \
1827 (sizeof (type), (base), &(cur), (cnt)); \ 1974 (sizeof (type), (base), &(cur), (cnt)); \
1828 init ((base) + (ocur_), (cur) - ocur_); \ 1975 init ((base) + (ocur_), (cur) - ocur_); \
1829 } 1976 }
1830 1977
1842 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1989 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1843 1990
1844/*****************************************************************************/ 1991/*****************************************************************************/
1845 1992
1846/* dummy callback for pending events */ 1993/* dummy callback for pending events */
1847static void noinline 1994noinline
1995static void
1848pendingcb (EV_P_ ev_prepare *w, int revents) 1996pendingcb (EV_P_ ev_prepare *w, int revents)
1849{ 1997{
1850} 1998}
1851 1999
1852void noinline 2000noinline
2001void
1853ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2002ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1854{ 2003{
1855 W w_ = (W)w; 2004 W w_ = (W)w;
1856 int pri = ABSPRI (w_); 2005 int pri = ABSPRI (w_);
1857 2006
1858 if (expect_false (w_->pending)) 2007 if (expect_false (w_->pending))
1919 if (expect_true (!anfd->reify)) 2068 if (expect_true (!anfd->reify))
1920 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
1921} 2070}
1922 2071
1923void 2072void
1924ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2073ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1925{ 2074{
1926 if (fd >= 0 && fd < anfdmax) 2075 if (fd >= 0 && fd < anfdmax)
1927 fd_event_nocheck (EV_A_ fd, revents); 2076 fd_event_nocheck (EV_A_ fd, revents);
1928} 2077}
1929 2078
1987 2136
1988 fdchangecnt = 0; 2137 fdchangecnt = 0;
1989} 2138}
1990 2139
1991/* something about the given fd changed */ 2140/* something about the given fd changed */
1992inline_size void 2141inline_size
2142void
1993fd_change (EV_P_ int fd, int flags) 2143fd_change (EV_P_ int fd, int flags)
1994{ 2144{
1995 unsigned char reify = anfds [fd].reify; 2145 unsigned char reify = anfds [fd].reify;
1996 anfds [fd].reify |= flags; 2146 anfds [fd].reify |= flags;
1997 2147
2002 fdchanges [fdchangecnt - 1] = fd; 2152 fdchanges [fdchangecnt - 1] = fd;
2003 } 2153 }
2004} 2154}
2005 2155
2006/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2156/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
2007inline_speed void ecb_cold 2157inline_speed ecb_cold void
2008fd_kill (EV_P_ int fd) 2158fd_kill (EV_P_ int fd)
2009{ 2159{
2010 ev_io *w; 2160 ev_io *w;
2011 2161
2012 while ((w = (ev_io *)anfds [fd].head)) 2162 while ((w = (ev_io *)anfds [fd].head))
2015 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2165 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
2016 } 2166 }
2017} 2167}
2018 2168
2019/* check whether the given fd is actually valid, for error recovery */ 2169/* check whether the given fd is actually valid, for error recovery */
2020inline_size int ecb_cold 2170inline_size ecb_cold int
2021fd_valid (int fd) 2171fd_valid (int fd)
2022{ 2172{
2023#ifdef _WIN32 2173#ifdef _WIN32
2024 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2174 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
2025#else 2175#else
2026 return fcntl (fd, F_GETFD) != -1; 2176 return fcntl (fd, F_GETFD) != -1;
2027#endif 2177#endif
2028} 2178}
2029 2179
2030/* called on EBADF to verify fds */ 2180/* called on EBADF to verify fds */
2031static void noinline ecb_cold 2181noinline ecb_cold
2182static void
2032fd_ebadf (EV_P) 2183fd_ebadf (EV_P)
2033{ 2184{
2034 int fd; 2185 int fd;
2035 2186
2036 for (fd = 0; fd < anfdmax; ++fd) 2187 for (fd = 0; fd < anfdmax; ++fd)
2038 if (!fd_valid (fd) && errno == EBADF) 2189 if (!fd_valid (fd) && errno == EBADF)
2039 fd_kill (EV_A_ fd); 2190 fd_kill (EV_A_ fd);
2040} 2191}
2041 2192
2042/* called on ENOMEM in select/poll to kill some fds and retry */ 2193/* called on ENOMEM in select/poll to kill some fds and retry */
2043static void noinline ecb_cold 2194noinline ecb_cold
2195static void
2044fd_enomem (EV_P) 2196fd_enomem (EV_P)
2045{ 2197{
2046 int fd; 2198 int fd;
2047 2199
2048 for (fd = anfdmax; fd--; ) 2200 for (fd = anfdmax; fd--; )
2052 break; 2204 break;
2053 } 2205 }
2054} 2206}
2055 2207
2056/* usually called after fork if backend needs to re-arm all fds from scratch */ 2208/* usually called after fork if backend needs to re-arm all fds from scratch */
2057static void noinline 2209noinline
2210static void
2058fd_rearm_all (EV_P) 2211fd_rearm_all (EV_P)
2059{ 2212{
2060 int fd; 2213 int fd;
2061 2214
2062 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
2243 2396
2244/*****************************************************************************/ 2397/*****************************************************************************/
2245 2398
2246#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2399#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2247 2400
2248static void noinline ecb_cold 2401noinline ecb_cold
2402static void
2249evpipe_init (EV_P) 2403evpipe_init (EV_P)
2250{ 2404{
2251 if (!ev_is_active (&pipe_w)) 2405 if (!ev_is_active (&pipe_w))
2252 { 2406 {
2253 int fds [2]; 2407 int fds [2];
2324#endif 2478#endif
2325 { 2479 {
2326#ifdef _WIN32 2480#ifdef _WIN32
2327 WSABUF buf; 2481 WSABUF buf;
2328 DWORD sent; 2482 DWORD sent;
2329 buf.buf = &buf; 2483 buf.buf = (char *)&buf;
2330 buf.len = 1; 2484 buf.len = 1;
2331 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2485 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2332#else 2486#else
2333 write (evpipe [1], &(evpipe [1]), 1); 2487 write (evpipe [1], &(evpipe [1]), 1);
2334#endif 2488#endif
2406} 2560}
2407 2561
2408/*****************************************************************************/ 2562/*****************************************************************************/
2409 2563
2410void 2564void
2411ev_feed_signal (int signum) EV_THROW 2565ev_feed_signal (int signum) EV_NOEXCEPT
2412{ 2566{
2413#if EV_MULTIPLICITY 2567#if EV_MULTIPLICITY
2414 EV_P; 2568 EV_P;
2415 ECB_MEMORY_FENCE_ACQUIRE; 2569 ECB_MEMORY_FENCE_ACQUIRE;
2416 EV_A = signals [signum - 1].loop; 2570 EV_A = signals [signum - 1].loop;
2431#endif 2585#endif
2432 2586
2433 ev_feed_signal (signum); 2587 ev_feed_signal (signum);
2434} 2588}
2435 2589
2436void noinline 2590noinline
2591void
2437ev_feed_signal_event (EV_P_ int signum) EV_THROW 2592ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2438{ 2593{
2439 WL w; 2594 WL w;
2440 2595
2441 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2596 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2442 return; 2597 return;
2558#endif 2713#endif
2559#if EV_USE_SELECT 2714#if EV_USE_SELECT
2560# include "ev_select.c" 2715# include "ev_select.c"
2561#endif 2716#endif
2562 2717
2563int ecb_cold 2718ecb_cold int
2564ev_version_major (void) EV_THROW 2719ev_version_major (void) EV_NOEXCEPT
2565{ 2720{
2566 return EV_VERSION_MAJOR; 2721 return EV_VERSION_MAJOR;
2567} 2722}
2568 2723
2569int ecb_cold 2724ecb_cold int
2570ev_version_minor (void) EV_THROW 2725ev_version_minor (void) EV_NOEXCEPT
2571{ 2726{
2572 return EV_VERSION_MINOR; 2727 return EV_VERSION_MINOR;
2573} 2728}
2574 2729
2575/* return true if we are running with elevated privileges and should ignore env variables */ 2730/* return true if we are running with elevated privileges and should ignore env variables */
2576int inline_size ecb_cold 2731inline_size ecb_cold int
2577enable_secure (void) 2732enable_secure (void)
2578{ 2733{
2579#ifdef _WIN32 2734#ifdef _WIN32
2580 return 0; 2735 return 0;
2581#else 2736#else
2582 return getuid () != geteuid () 2737 return getuid () != geteuid ()
2583 || getgid () != getegid (); 2738 || getgid () != getegid ();
2584#endif 2739#endif
2585} 2740}
2586 2741
2587unsigned int ecb_cold 2742ecb_cold
2743unsigned int
2588ev_supported_backends (void) EV_THROW 2744ev_supported_backends (void) EV_NOEXCEPT
2589{ 2745{
2590 unsigned int flags = 0; 2746 unsigned int flags = 0;
2591 2747
2592 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2748 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2593 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2749 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
2596 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2752 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2597 2753
2598 return flags; 2754 return flags;
2599} 2755}
2600 2756
2601unsigned int ecb_cold 2757ecb_cold
2758unsigned int
2602ev_recommended_backends (void) EV_THROW 2759ev_recommended_backends (void) EV_NOEXCEPT
2603{ 2760{
2604 unsigned int flags = ev_supported_backends (); 2761 unsigned int flags = ev_supported_backends ();
2605 2762
2606#ifndef __NetBSD__ 2763#ifndef __NetBSD__
2607 /* kqueue is borked on everything but netbsd apparently */ 2764 /* kqueue is borked on everything but netbsd apparently */
2618#endif 2775#endif
2619 2776
2620 return flags; 2777 return flags;
2621} 2778}
2622 2779
2623unsigned int ecb_cold 2780ecb_cold
2781unsigned int
2624ev_embeddable_backends (void) EV_THROW 2782ev_embeddable_backends (void) EV_NOEXCEPT
2625{ 2783{
2626 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2784 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2627 2785
2628 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2786 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2629 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2787 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2631 2789
2632 return flags; 2790 return flags;
2633} 2791}
2634 2792
2635unsigned int 2793unsigned int
2636ev_backend (EV_P) EV_THROW 2794ev_backend (EV_P) EV_NOEXCEPT
2637{ 2795{
2638 return backend; 2796 return backend;
2639} 2797}
2640 2798
2641#if EV_FEATURE_API 2799#if EV_FEATURE_API
2642unsigned int 2800unsigned int
2643ev_iteration (EV_P) EV_THROW 2801ev_iteration (EV_P) EV_NOEXCEPT
2644{ 2802{
2645 return loop_count; 2803 return loop_count;
2646} 2804}
2647 2805
2648unsigned int 2806unsigned int
2649ev_depth (EV_P) EV_THROW 2807ev_depth (EV_P) EV_NOEXCEPT
2650{ 2808{
2651 return loop_depth; 2809 return loop_depth;
2652} 2810}
2653 2811
2654void 2812void
2655ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2813ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2656{ 2814{
2657 io_blocktime = interval; 2815 io_blocktime = interval;
2658} 2816}
2659 2817
2660void 2818void
2661ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2819ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2662{ 2820{
2663 timeout_blocktime = interval; 2821 timeout_blocktime = interval;
2664} 2822}
2665 2823
2666void 2824void
2667ev_set_userdata (EV_P_ void *data) EV_THROW 2825ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2668{ 2826{
2669 userdata = data; 2827 userdata = data;
2670} 2828}
2671 2829
2672void * 2830void *
2673ev_userdata (EV_P) EV_THROW 2831ev_userdata (EV_P) EV_NOEXCEPT
2674{ 2832{
2675 return userdata; 2833 return userdata;
2676} 2834}
2677 2835
2678void 2836void
2679ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 2837ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2680{ 2838{
2681 invoke_cb = invoke_pending_cb; 2839 invoke_cb = invoke_pending_cb;
2682} 2840}
2683 2841
2684void 2842void
2685ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 2843ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2686{ 2844{
2687 release_cb = release; 2845 release_cb = release;
2688 acquire_cb = acquire; 2846 acquire_cb = acquire;
2689} 2847}
2690#endif 2848#endif
2691 2849
2692/* initialise a loop structure, must be zero-initialised */ 2850/* initialise a loop structure, must be zero-initialised */
2693static void noinline ecb_cold 2851noinline ecb_cold
2852static void
2694loop_init (EV_P_ unsigned int flags) EV_THROW 2853loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2695{ 2854{
2696 if (!backend) 2855 if (!backend)
2697 { 2856 {
2698 origflags = flags; 2857 origflags = flags;
2699 2858
2785#endif 2944#endif
2786 } 2945 }
2787} 2946}
2788 2947
2789/* free up a loop structure */ 2948/* free up a loop structure */
2790void ecb_cold 2949ecb_cold
2950void
2791ev_loop_destroy (EV_P) 2951ev_loop_destroy (EV_P)
2792{ 2952{
2793 int i; 2953 int i;
2794 2954
2795#if EV_MULTIPLICITY 2955#if EV_MULTIPLICITY
2916#if EV_USE_INOTIFY 3076#if EV_USE_INOTIFY
2917 infy_fork (EV_A); 3077 infy_fork (EV_A);
2918#endif 3078#endif
2919 3079
2920#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3080#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2921 if (ev_is_active (&pipe_w)) 3081 if (ev_is_active (&pipe_w) && postfork != 2)
2922 { 3082 {
2923 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3083 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2924 3084
2925 ev_ref (EV_A); 3085 ev_ref (EV_A);
2926 ev_io_stop (EV_A_ &pipe_w); 3086 ev_io_stop (EV_A_ &pipe_w);
2937 postfork = 0; 3097 postfork = 0;
2938} 3098}
2939 3099
2940#if EV_MULTIPLICITY 3100#if EV_MULTIPLICITY
2941 3101
3102ecb_cold
2942struct ev_loop * ecb_cold 3103struct ev_loop *
2943ev_loop_new (unsigned int flags) EV_THROW 3104ev_loop_new (unsigned int flags) EV_NOEXCEPT
2944{ 3105{
2945 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3106 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2946 3107
2947 memset (EV_A, 0, sizeof (struct ev_loop)); 3108 memset (EV_A, 0, sizeof (struct ev_loop));
2948 loop_init (EV_A_ flags); 3109 loop_init (EV_A_ flags);
2955} 3116}
2956 3117
2957#endif /* multiplicity */ 3118#endif /* multiplicity */
2958 3119
2959#if EV_VERIFY 3120#if EV_VERIFY
2960static void noinline ecb_cold 3121noinline ecb_cold
3122static void
2961verify_watcher (EV_P_ W w) 3123verify_watcher (EV_P_ W w)
2962{ 3124{
2963 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2964 3126
2965 if (w->pending) 3127 if (w->pending)
2966 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2967} 3129}
2968 3130
2969static void noinline ecb_cold 3131noinline ecb_cold
3132static void
2970verify_heap (EV_P_ ANHE *heap, int N) 3133verify_heap (EV_P_ ANHE *heap, int N)
2971{ 3134{
2972 int i; 3135 int i;
2973 3136
2974 for (i = HEAP0; i < N + HEAP0; ++i) 3137 for (i = HEAP0; i < N + HEAP0; ++i)
2979 3142
2980 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2981 } 3144 }
2982} 3145}
2983 3146
2984static void noinline ecb_cold 3147noinline ecb_cold
3148static void
2985array_verify (EV_P_ W *ws, int cnt) 3149array_verify (EV_P_ W *ws, int cnt)
2986{ 3150{
2987 while (cnt--) 3151 while (cnt--)
2988 { 3152 {
2989 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2992} 3156}
2993#endif 3157#endif
2994 3158
2995#if EV_FEATURE_API 3159#if EV_FEATURE_API
2996void ecb_cold 3160void ecb_cold
2997ev_verify (EV_P) EV_THROW 3161ev_verify (EV_P) EV_NOEXCEPT
2998{ 3162{
2999#if EV_VERIFY 3163#if EV_VERIFY
3000 int i; 3164 int i;
3001 WL w, w2; 3165 WL w, w2;
3002 3166
3078#endif 3242#endif
3079} 3243}
3080#endif 3244#endif
3081 3245
3082#if EV_MULTIPLICITY 3246#if EV_MULTIPLICITY
3247ecb_cold
3083struct ev_loop * ecb_cold 3248struct ev_loop *
3084#else 3249#else
3085int 3250int
3086#endif 3251#endif
3087ev_default_loop (unsigned int flags) EV_THROW 3252ev_default_loop (unsigned int flags) EV_NOEXCEPT
3088{ 3253{
3089 if (!ev_default_loop_ptr) 3254 if (!ev_default_loop_ptr)
3090 { 3255 {
3091#if EV_MULTIPLICITY 3256#if EV_MULTIPLICITY
3092 EV_P = ev_default_loop_ptr = &default_loop_struct; 3257 EV_P = ev_default_loop_ptr = &default_loop_struct;
3111 3276
3112 return ev_default_loop_ptr; 3277 return ev_default_loop_ptr;
3113} 3278}
3114 3279
3115void 3280void
3116ev_loop_fork (EV_P) EV_THROW 3281ev_loop_fork (EV_P) EV_NOEXCEPT
3117{ 3282{
3118 postfork = 1; 3283 postfork = 1;
3119} 3284}
3120 3285
3121/*****************************************************************************/ 3286/*****************************************************************************/
3125{ 3290{
3126 EV_CB_INVOKE ((W)w, revents); 3291 EV_CB_INVOKE ((W)w, revents);
3127} 3292}
3128 3293
3129unsigned int 3294unsigned int
3130ev_pending_count (EV_P) EV_THROW 3295ev_pending_count (EV_P) EV_NOEXCEPT
3131{ 3296{
3132 int pri; 3297 int pri;
3133 unsigned int count = 0; 3298 unsigned int count = 0;
3134 3299
3135 for (pri = NUMPRI; pri--; ) 3300 for (pri = NUMPRI; pri--; )
3136 count += pendingcnt [pri]; 3301 count += pendingcnt [pri];
3137 3302
3138 return count; 3303 return count;
3139} 3304}
3140 3305
3141void noinline 3306noinline
3307void
3142ev_invoke_pending (EV_P) 3308ev_invoke_pending (EV_P)
3143{ 3309{
3144 pendingpri = NUMPRI; 3310 pendingpri = NUMPRI;
3145 3311
3146 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3312 do
3147 { 3313 {
3148 --pendingpri; 3314 --pendingpri;
3149 3315
3316 /* pendingpri possibly gets modified in the inner loop */
3150 while (pendingcnt [pendingpri]) 3317 while (pendingcnt [pendingpri])
3151 { 3318 {
3152 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3319 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3153 3320
3154 p->w->pending = 0; 3321 p->w->pending = 0;
3155 EV_CB_INVOKE (p->w, p->events); 3322 EV_CB_INVOKE (p->w, p->events);
3156 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
3157 } 3324 }
3158 } 3325 }
3326 while (pendingpri);
3159} 3327}
3160 3328
3161#if EV_IDLE_ENABLE 3329#if EV_IDLE_ENABLE
3162/* make idle watchers pending. this handles the "call-idle */ 3330/* make idle watchers pending. this handles the "call-idle */
3163/* only when higher priorities are idle" logic */ 3331/* only when higher priorities are idle" logic */
3221 } 3389 }
3222} 3390}
3223 3391
3224#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
3225 3393
3226static void noinline 3394noinline
3395static void
3227periodic_recalc (EV_P_ ev_periodic *w) 3396periodic_recalc (EV_P_ ev_periodic *w)
3228{ 3397{
3229 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3398 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3230 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3399 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3231 3400
3289 } 3458 }
3290} 3459}
3291 3460
3292/* simply recalculate all periodics */ 3461/* simply recalculate all periodics */
3293/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3462/* TODO: maybe ensure that at least one event happens when jumping forward? */
3294static void noinline ecb_cold 3463noinline ecb_cold
3464static void
3295periodics_reschedule (EV_P) 3465periodics_reschedule (EV_P)
3296{ 3466{
3297 int i; 3467 int i;
3298 3468
3299 /* adjust periodics after time jump */ 3469 /* adjust periodics after time jump */
3312 reheap (periodics, periodiccnt); 3482 reheap (periodics, periodiccnt);
3313} 3483}
3314#endif 3484#endif
3315 3485
3316/* adjust all timers by a given offset */ 3486/* adjust all timers by a given offset */
3317static void noinline ecb_cold 3487noinline ecb_cold
3488static void
3318timers_reschedule (EV_P_ ev_tstamp adjust) 3489timers_reschedule (EV_P_ ev_tstamp adjust)
3319{ 3490{
3320 int i; 3491 int i;
3321 3492
3322 for (i = 0; i < timercnt; ++i) 3493 for (i = 0; i < timercnt; ++i)
3569 3740
3570 return activecnt; 3741 return activecnt;
3571} 3742}
3572 3743
3573void 3744void
3574ev_break (EV_P_ int how) EV_THROW 3745ev_break (EV_P_ int how) EV_NOEXCEPT
3575{ 3746{
3576 loop_done = how; 3747 loop_done = how;
3577} 3748}
3578 3749
3579void 3750void
3580ev_ref (EV_P) EV_THROW 3751ev_ref (EV_P) EV_NOEXCEPT
3581{ 3752{
3582 ++activecnt; 3753 ++activecnt;
3583} 3754}
3584 3755
3585void 3756void
3586ev_unref (EV_P) EV_THROW 3757ev_unref (EV_P) EV_NOEXCEPT
3587{ 3758{
3588 --activecnt; 3759 --activecnt;
3589} 3760}
3590 3761
3591void 3762void
3592ev_now_update (EV_P) EV_THROW 3763ev_now_update (EV_P) EV_NOEXCEPT
3593{ 3764{
3594 time_update (EV_A_ 1e100); 3765 time_update (EV_A_ 1e100);
3595} 3766}
3596 3767
3597void 3768void
3598ev_suspend (EV_P) EV_THROW 3769ev_suspend (EV_P) EV_NOEXCEPT
3599{ 3770{
3600 ev_now_update (EV_A); 3771 ev_now_update (EV_A);
3601} 3772}
3602 3773
3603void 3774void
3604ev_resume (EV_P) EV_THROW 3775ev_resume (EV_P) EV_NOEXCEPT
3605{ 3776{
3606 ev_tstamp mn_prev = mn_now; 3777 ev_tstamp mn_prev = mn_now;
3607 3778
3608 ev_now_update (EV_A); 3779 ev_now_update (EV_A);
3609 timers_reschedule (EV_A_ mn_now - mn_prev); 3780 timers_reschedule (EV_A_ mn_now - mn_prev);
3648 w->pending = 0; 3819 w->pending = 0;
3649 } 3820 }
3650} 3821}
3651 3822
3652int 3823int
3653ev_clear_pending (EV_P_ void *w) EV_THROW 3824ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3654{ 3825{
3655 W w_ = (W)w; 3826 W w_ = (W)w;
3656 int pending = w_->pending; 3827 int pending = w_->pending;
3657 3828
3658 if (expect_true (pending)) 3829 if (expect_true (pending))
3690 w->active = 0; 3861 w->active = 0;
3691} 3862}
3692 3863
3693/*****************************************************************************/ 3864/*****************************************************************************/
3694 3865
3695void noinline 3866noinline
3867void
3696ev_io_start (EV_P_ ev_io *w) EV_THROW 3868ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3697{ 3869{
3698 int fd = w->fd; 3870 int fd = w->fd;
3699 3871
3700 if (expect_false (ev_is_active (w))) 3872 if (expect_false (ev_is_active (w)))
3701 return; 3873 return;
3716 w->events &= ~EV__IOFDSET; 3888 w->events &= ~EV__IOFDSET;
3717 3889
3718 EV_FREQUENT_CHECK; 3890 EV_FREQUENT_CHECK;
3719} 3891}
3720 3892
3721void noinline 3893noinline
3894void
3722ev_io_stop (EV_P_ ev_io *w) EV_THROW 3895ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3723{ 3896{
3724 clear_pending (EV_A_ (W)w); 3897 clear_pending (EV_A_ (W)w);
3725 if (expect_false (!ev_is_active (w))) 3898 if (expect_false (!ev_is_active (w)))
3726 return; 3899 return;
3727 3900
3735 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3908 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3736 3909
3737 EV_FREQUENT_CHECK; 3910 EV_FREQUENT_CHECK;
3738} 3911}
3739 3912
3740void noinline 3913noinline
3914void
3741ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3915ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3742{ 3916{
3743 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
3744 return; 3918 return;
3745 3919
3746 ev_at (w) += mn_now; 3920 ev_at (w) += mn_now;
3759 EV_FREQUENT_CHECK; 3933 EV_FREQUENT_CHECK;
3760 3934
3761 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3935 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3762} 3936}
3763 3937
3764void noinline 3938noinline
3939void
3765ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3940ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3766{ 3941{
3767 clear_pending (EV_A_ (W)w); 3942 clear_pending (EV_A_ (W)w);
3768 if (expect_false (!ev_is_active (w))) 3943 if (expect_false (!ev_is_active (w)))
3769 return; 3944 return;
3770 3945
3789 ev_stop (EV_A_ (W)w); 3964 ev_stop (EV_A_ (W)w);
3790 3965
3791 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3792} 3967}
3793 3968
3794void noinline 3969noinline
3970void
3795ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3971ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3796{ 3972{
3797 EV_FREQUENT_CHECK; 3973 EV_FREQUENT_CHECK;
3798 3974
3799 clear_pending (EV_A_ (W)w); 3975 clear_pending (EV_A_ (W)w);
3800 3976
3817 3993
3818 EV_FREQUENT_CHECK; 3994 EV_FREQUENT_CHECK;
3819} 3995}
3820 3996
3821ev_tstamp 3997ev_tstamp
3822ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 3998ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3823{ 3999{
3824 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4000 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3825} 4001}
3826 4002
3827#if EV_PERIODIC_ENABLE 4003#if EV_PERIODIC_ENABLE
3828void noinline 4004noinline
4005void
3829ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4006ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3830{ 4007{
3831 if (expect_false (ev_is_active (w))) 4008 if (expect_false (ev_is_active (w)))
3832 return; 4009 return;
3833 4010
3834 if (w->reschedule_cb) 4011 if (w->reschedule_cb)
3853 EV_FREQUENT_CHECK; 4030 EV_FREQUENT_CHECK;
3854 4031
3855 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4032 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3856} 4033}
3857 4034
3858void noinline 4035noinline
4036void
3859ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4037ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3860{ 4038{
3861 clear_pending (EV_A_ (W)w); 4039 clear_pending (EV_A_ (W)w);
3862 if (expect_false (!ev_is_active (w))) 4040 if (expect_false (!ev_is_active (w)))
3863 return; 4041 return;
3864 4042
3881 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
3882 4060
3883 EV_FREQUENT_CHECK; 4061 EV_FREQUENT_CHECK;
3884} 4062}
3885 4063
3886void noinline 4064noinline
4065void
3887ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4066ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3888{ 4067{
3889 /* TODO: use adjustheap and recalculation */ 4068 /* TODO: use adjustheap and recalculation */
3890 ev_periodic_stop (EV_A_ w); 4069 ev_periodic_stop (EV_A_ w);
3891 ev_periodic_start (EV_A_ w); 4070 ev_periodic_start (EV_A_ w);
3892} 4071}
3896# define SA_RESTART 0 4075# define SA_RESTART 0
3897#endif 4076#endif
3898 4077
3899#if EV_SIGNAL_ENABLE 4078#if EV_SIGNAL_ENABLE
3900 4079
3901void noinline 4080noinline
4081void
3902ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4082ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3903{ 4083{
3904 if (expect_false (ev_is_active (w))) 4084 if (expect_false (ev_is_active (w)))
3905 return; 4085 return;
3906 4086
3907 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4087 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3978 } 4158 }
3979 4159
3980 EV_FREQUENT_CHECK; 4160 EV_FREQUENT_CHECK;
3981} 4161}
3982 4162
3983void noinline 4163noinline
4164void
3984ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4165ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3985{ 4166{
3986 clear_pending (EV_A_ (W)w); 4167 clear_pending (EV_A_ (W)w);
3987 if (expect_false (!ev_is_active (w))) 4168 if (expect_false (!ev_is_active (w)))
3988 return; 4169 return;
3989 4170
4020#endif 4201#endif
4021 4202
4022#if EV_CHILD_ENABLE 4203#if EV_CHILD_ENABLE
4023 4204
4024void 4205void
4025ev_child_start (EV_P_ ev_child *w) EV_THROW 4206ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4026{ 4207{
4027#if EV_MULTIPLICITY 4208#if EV_MULTIPLICITY
4028 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4209 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
4029#endif 4210#endif
4030 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
4037 4218
4038 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
4039} 4220}
4040 4221
4041void 4222void
4042ev_child_stop (EV_P_ ev_child *w) EV_THROW 4223ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4043{ 4224{
4044 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
4045 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
4046 return; 4227 return;
4047 4228
4064 4245
4065#define DEF_STAT_INTERVAL 5.0074891 4246#define DEF_STAT_INTERVAL 5.0074891
4066#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4247#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4067#define MIN_STAT_INTERVAL 0.1074891 4248#define MIN_STAT_INTERVAL 0.1074891
4068 4249
4069static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4250noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4070 4251
4071#if EV_USE_INOTIFY 4252#if EV_USE_INOTIFY
4072 4253
4073/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4254/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4074# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4255# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4075 4256
4076static void noinline 4257noinline
4258static void
4077infy_add (EV_P_ ev_stat *w) 4259infy_add (EV_P_ ev_stat *w)
4078{ 4260{
4079 w->wd = inotify_add_watch (fs_fd, w->path, 4261 w->wd = inotify_add_watch (fs_fd, w->path,
4080 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4262 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4081 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4263 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4145 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4327 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4146 ev_timer_again (EV_A_ &w->timer); 4328 ev_timer_again (EV_A_ &w->timer);
4147 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4329 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4148} 4330}
4149 4331
4150static void noinline 4332noinline
4333static void
4151infy_del (EV_P_ ev_stat *w) 4334infy_del (EV_P_ ev_stat *w)
4152{ 4335{
4153 int slot; 4336 int slot;
4154 int wd = w->wd; 4337 int wd = w->wd;
4155 4338
4162 4345
4163 /* remove this watcher, if others are watching it, they will rearm */ 4346 /* remove this watcher, if others are watching it, they will rearm */
4164 inotify_rm_watch (fs_fd, wd); 4347 inotify_rm_watch (fs_fd, wd);
4165} 4348}
4166 4349
4167static void noinline 4350noinline
4351static void
4168infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4352infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4169{ 4353{
4170 if (slot < 0) 4354 if (slot < 0)
4171 /* overflow, need to check for all hash slots */ 4355 /* overflow, need to check for all hash slots */
4172 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4356 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
4208 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4392 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4209 ofs += sizeof (struct inotify_event) + ev->len; 4393 ofs += sizeof (struct inotify_event) + ev->len;
4210 } 4394 }
4211} 4395}
4212 4396
4213inline_size void ecb_cold 4397inline_size ecb_cold
4398void
4214ev_check_2625 (EV_P) 4399ev_check_2625 (EV_P)
4215{ 4400{
4216 /* kernels < 2.6.25 are borked 4401 /* kernels < 2.6.25 are borked
4217 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4402 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4218 */ 4403 */
4308#else 4493#else
4309# define EV_LSTAT(p,b) lstat (p, b) 4494# define EV_LSTAT(p,b) lstat (p, b)
4310#endif 4495#endif
4311 4496
4312void 4497void
4313ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4498ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4314{ 4499{
4315 if (lstat (w->path, &w->attr) < 0) 4500 if (lstat (w->path, &w->attr) < 0)
4316 w->attr.st_nlink = 0; 4501 w->attr.st_nlink = 0;
4317 else if (!w->attr.st_nlink) 4502 else if (!w->attr.st_nlink)
4318 w->attr.st_nlink = 1; 4503 w->attr.st_nlink = 1;
4319} 4504}
4320 4505
4321static void noinline 4506noinline
4507static void
4322stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4508stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4323{ 4509{
4324 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4510 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4325 4511
4326 ev_statdata prev = w->attr; 4512 ev_statdata prev = w->attr;
4357 ev_feed_event (EV_A_ w, EV_STAT); 4543 ev_feed_event (EV_A_ w, EV_STAT);
4358 } 4544 }
4359} 4545}
4360 4546
4361void 4547void
4362ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4548ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4363{ 4549{
4364 if (expect_false (ev_is_active (w))) 4550 if (expect_false (ev_is_active (w)))
4365 return; 4551 return;
4366 4552
4367 ev_stat_stat (EV_A_ w); 4553 ev_stat_stat (EV_A_ w);
4388 4574
4389 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
4390} 4576}
4391 4577
4392void 4578void
4393ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4579ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4394{ 4580{
4395 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
4396 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
4397 return; 4583 return;
4398 4584
4414} 4600}
4415#endif 4601#endif
4416 4602
4417#if EV_IDLE_ENABLE 4603#if EV_IDLE_ENABLE
4418void 4604void
4419ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4605ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4420{ 4606{
4421 if (expect_false (ev_is_active (w))) 4607 if (expect_false (ev_is_active (w)))
4422 return; 4608 return;
4423 4609
4424 pri_adjust (EV_A_ (W)w); 4610 pri_adjust (EV_A_ (W)w);
4437 4623
4438 EV_FREQUENT_CHECK; 4624 EV_FREQUENT_CHECK;
4439} 4625}
4440 4626
4441void 4627void
4442ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4628ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4443{ 4629{
4444 clear_pending (EV_A_ (W)w); 4630 clear_pending (EV_A_ (W)w);
4445 if (expect_false (!ev_is_active (w))) 4631 if (expect_false (!ev_is_active (w)))
4446 return; 4632 return;
4447 4633
4461} 4647}
4462#endif 4648#endif
4463 4649
4464#if EV_PREPARE_ENABLE 4650#if EV_PREPARE_ENABLE
4465void 4651void
4466ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4652ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4467{ 4653{
4468 if (expect_false (ev_is_active (w))) 4654 if (expect_false (ev_is_active (w)))
4469 return; 4655 return;
4470 4656
4471 EV_FREQUENT_CHECK; 4657 EV_FREQUENT_CHECK;
4476 4662
4477 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
4478} 4664}
4479 4665
4480void 4666void
4481ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4667ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4482{ 4668{
4483 clear_pending (EV_A_ (W)w); 4669 clear_pending (EV_A_ (W)w);
4484 if (expect_false (!ev_is_active (w))) 4670 if (expect_false (!ev_is_active (w)))
4485 return; 4671 return;
4486 4672
4499} 4685}
4500#endif 4686#endif
4501 4687
4502#if EV_CHECK_ENABLE 4688#if EV_CHECK_ENABLE
4503void 4689void
4504ev_check_start (EV_P_ ev_check *w) EV_THROW 4690ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4505{ 4691{
4506 if (expect_false (ev_is_active (w))) 4692 if (expect_false (ev_is_active (w)))
4507 return; 4693 return;
4508 4694
4509 EV_FREQUENT_CHECK; 4695 EV_FREQUENT_CHECK;
4514 4700
4515 EV_FREQUENT_CHECK; 4701 EV_FREQUENT_CHECK;
4516} 4702}
4517 4703
4518void 4704void
4519ev_check_stop (EV_P_ ev_check *w) EV_THROW 4705ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4520{ 4706{
4521 clear_pending (EV_A_ (W)w); 4707 clear_pending (EV_A_ (W)w);
4522 if (expect_false (!ev_is_active (w))) 4708 if (expect_false (!ev_is_active (w)))
4523 return; 4709 return;
4524 4710
4536 EV_FREQUENT_CHECK; 4722 EV_FREQUENT_CHECK;
4537} 4723}
4538#endif 4724#endif
4539 4725
4540#if EV_EMBED_ENABLE 4726#if EV_EMBED_ENABLE
4541void noinline 4727noinline
4728void
4542ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4729ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4543{ 4730{
4544 ev_run (w->other, EVRUN_NOWAIT); 4731 ev_run (w->other, EVRUN_NOWAIT);
4545} 4732}
4546 4733
4547static void 4734static void
4595 ev_idle_stop (EV_A_ idle); 4782 ev_idle_stop (EV_A_ idle);
4596} 4783}
4597#endif 4784#endif
4598 4785
4599void 4786void
4600ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4787ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4601{ 4788{
4602 if (expect_false (ev_is_active (w))) 4789 if (expect_false (ev_is_active (w)))
4603 return; 4790 return;
4604 4791
4605 { 4792 {
4626 4813
4627 EV_FREQUENT_CHECK; 4814 EV_FREQUENT_CHECK;
4628} 4815}
4629 4816
4630void 4817void
4631ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4818ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4632{ 4819{
4633 clear_pending (EV_A_ (W)w); 4820 clear_pending (EV_A_ (W)w);
4634 if (expect_false (!ev_is_active (w))) 4821 if (expect_false (!ev_is_active (w)))
4635 return; 4822 return;
4636 4823
4646} 4833}
4647#endif 4834#endif
4648 4835
4649#if EV_FORK_ENABLE 4836#if EV_FORK_ENABLE
4650void 4837void
4651ev_fork_start (EV_P_ ev_fork *w) EV_THROW 4838ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4652{ 4839{
4653 if (expect_false (ev_is_active (w))) 4840 if (expect_false (ev_is_active (w)))
4654 return; 4841 return;
4655 4842
4656 EV_FREQUENT_CHECK; 4843 EV_FREQUENT_CHECK;
4661 4848
4662 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
4663} 4850}
4664 4851
4665void 4852void
4666ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 4853ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4667{ 4854{
4668 clear_pending (EV_A_ (W)w); 4855 clear_pending (EV_A_ (W)w);
4669 if (expect_false (!ev_is_active (w))) 4856 if (expect_false (!ev_is_active (w)))
4670 return; 4857 return;
4671 4858
4684} 4871}
4685#endif 4872#endif
4686 4873
4687#if EV_CLEANUP_ENABLE 4874#if EV_CLEANUP_ENABLE
4688void 4875void
4689ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 4876ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4690{ 4877{
4691 if (expect_false (ev_is_active (w))) 4878 if (expect_false (ev_is_active (w)))
4692 return; 4879 return;
4693 4880
4694 EV_FREQUENT_CHECK; 4881 EV_FREQUENT_CHECK;
4701 ev_unref (EV_A); 4888 ev_unref (EV_A);
4702 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
4703} 4890}
4704 4891
4705void 4892void
4706ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 4893ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4707{ 4894{
4708 clear_pending (EV_A_ (W)w); 4895 clear_pending (EV_A_ (W)w);
4709 if (expect_false (!ev_is_active (w))) 4896 if (expect_false (!ev_is_active (w)))
4710 return; 4897 return;
4711 4898
4725} 4912}
4726#endif 4913#endif
4727 4914
4728#if EV_ASYNC_ENABLE 4915#if EV_ASYNC_ENABLE
4729void 4916void
4730ev_async_start (EV_P_ ev_async *w) EV_THROW 4917ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4731{ 4918{
4732 if (expect_false (ev_is_active (w))) 4919 if (expect_false (ev_is_active (w)))
4733 return; 4920 return;
4734 4921
4735 w->sent = 0; 4922 w->sent = 0;
4744 4931
4745 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
4746} 4933}
4747 4934
4748void 4935void
4749ev_async_stop (EV_P_ ev_async *w) EV_THROW 4936ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4750{ 4937{
4751 clear_pending (EV_A_ (W)w); 4938 clear_pending (EV_A_ (W)w);
4752 if (expect_false (!ev_is_active (w))) 4939 if (expect_false (!ev_is_active (w)))
4753 return; 4940 return;
4754 4941
4765 4952
4766 EV_FREQUENT_CHECK; 4953 EV_FREQUENT_CHECK;
4767} 4954}
4768 4955
4769void 4956void
4770ev_async_send (EV_P_ ev_async *w) EV_THROW 4957ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4771{ 4958{
4772 w->sent = 1; 4959 w->sent = 1;
4773 evpipe_write (EV_A_ &async_pending); 4960 evpipe_write (EV_A_ &async_pending);
4774} 4961}
4775#endif 4962#endif
4812 4999
4813 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5000 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4814} 5001}
4815 5002
4816void 5003void
4817ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5004ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4818{ 5005{
4819 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5006 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4820 5007
4821 if (expect_false (!once)) 5008 if (expect_false (!once))
4822 { 5009 {
4843} 5030}
4844 5031
4845/*****************************************************************************/ 5032/*****************************************************************************/
4846 5033
4847#if EV_WALK_ENABLE 5034#if EV_WALK_ENABLE
4848void ecb_cold 5035ecb_cold
5036void
4849ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5037ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4850{ 5038{
4851 int i, j; 5039 int i, j;
4852 ev_watcher_list *wl, *wn; 5040 ev_watcher_list *wl, *wn;
4853 5041
4854 if (types & (EV_IO | EV_EMBED)) 5042 if (types & (EV_IO | EV_EMBED))

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