… | |
… | |
357 | |
357 | |
358 | #ifndef EV_HEAP_CACHE_AT |
358 | #ifndef EV_HEAP_CACHE_AT |
359 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
359 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
360 | #endif |
360 | #endif |
361 | |
361 | |
|
|
362 | #ifdef ANDROID |
|
|
363 | /* supposedly, android doesn't typedef fd_mask */ |
|
|
364 | # undef EV_USE_SELECT |
|
|
365 | # define EV_USE_SELECT 0 |
|
|
366 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
|
|
367 | # undef EV_USE_CLOCK_SYSCALL |
|
|
368 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
369 | #endif |
|
|
370 | |
|
|
371 | /* aix's poll.h seems to cause lots of trouble */ |
|
|
372 | #ifdef _AIX |
|
|
373 | /* AIX has a completely broken poll.h header */ |
|
|
374 | # undef EV_USE_POLL |
|
|
375 | # define EV_USE_POLL 0 |
|
|
376 | #endif |
|
|
377 | |
362 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
378 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
363 | /* which makes programs even slower. might work on other unices, too. */ |
379 | /* which makes programs even slower. might work on other unices, too. */ |
364 | #if EV_USE_CLOCK_SYSCALL |
380 | #if EV_USE_CLOCK_SYSCALL |
365 | # include <sys/syscall.h> |
381 | # include <sys/syscall.h> |
366 | # ifdef SYS_clock_gettime |
382 | # ifdef SYS_clock_gettime |
… | |
… | |
372 | # define EV_USE_CLOCK_SYSCALL 0 |
388 | # define EV_USE_CLOCK_SYSCALL 0 |
373 | # endif |
389 | # endif |
374 | #endif |
390 | #endif |
375 | |
391 | |
376 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
392 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
377 | |
|
|
378 | #ifdef _AIX |
|
|
379 | /* AIX has a completely broken poll.h header */ |
|
|
380 | # undef EV_USE_POLL |
|
|
381 | # define EV_USE_POLL 0 |
|
|
382 | #endif |
|
|
383 | |
393 | |
384 | #ifndef CLOCK_MONOTONIC |
394 | #ifndef CLOCK_MONOTONIC |
385 | # undef EV_USE_MONOTONIC |
395 | # undef EV_USE_MONOTONIC |
386 | # define EV_USE_MONOTONIC 0 |
396 | # define EV_USE_MONOTONIC 0 |
387 | #endif |
397 | #endif |
… | |
… | |
505 | |
515 | |
506 | #ifndef ECB_H |
516 | #ifndef ECB_H |
507 | #define ECB_H |
517 | #define ECB_H |
508 | |
518 | |
509 | /* 16 bits major, 16 bits minor */ |
519 | /* 16 bits major, 16 bits minor */ |
510 | #define ECB_VERSION 0x00010001 |
520 | #define ECB_VERSION 0x00010003 |
511 | |
521 | |
512 | #ifdef _WIN32 |
522 | #ifdef _WIN32 |
513 | typedef signed char int8_t; |
523 | typedef signed char int8_t; |
514 | typedef unsigned char uint8_t; |
524 | typedef unsigned char uint8_t; |
515 | typedef signed short int16_t; |
525 | typedef signed short int16_t; |
… | |
… | |
530 | #else |
540 | #else |
531 | #define ECB_PTRSIZE 4 |
541 | #define ECB_PTRSIZE 4 |
532 | typedef uint32_t uintptr_t; |
542 | typedef uint32_t uintptr_t; |
533 | typedef int32_t intptr_t; |
543 | typedef int32_t intptr_t; |
534 | #endif |
544 | #endif |
535 | typedef intptr_t ptrdiff_t; |
|
|
536 | #else |
545 | #else |
537 | #include <inttypes.h> |
546 | #include <inttypes.h> |
538 | #if UINTMAX_MAX > 0xffffffffU |
547 | #if UINTMAX_MAX > 0xffffffffU |
539 | #define ECB_PTRSIZE 8 |
548 | #define ECB_PTRSIZE 8 |
540 | #else |
549 | #else |
541 | #define ECB_PTRSIZE 4 |
550 | #define ECB_PTRSIZE 4 |
|
|
551 | #endif |
|
|
552 | #endif |
|
|
553 | |
|
|
554 | /* work around x32 idiocy by defining proper macros */ |
|
|
555 | #if __x86_64 || _M_AMD64 |
|
|
556 | #if __ILP32 |
|
|
557 | #define ECB_AMD64_X32 1 |
|
|
558 | #else |
|
|
559 | #define ECB_AMD64 1 |
542 | #endif |
560 | #endif |
543 | #endif |
561 | #endif |
544 | |
562 | |
545 | /* many compilers define _GNUC_ to some versions but then only implement |
563 | /* many compilers define _GNUC_ to some versions but then only implement |
546 | * what their idiot authors think are the "more important" extensions, |
564 | * what their idiot authors think are the "more important" extensions, |
… | |
… | |
559 | |
577 | |
560 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
578 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
561 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
579 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
562 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
580 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
563 | #define ECB_CPP (__cplusplus+0) |
581 | #define ECB_CPP (__cplusplus+0) |
564 | #define ECB_CPP98 (__cplusplus >= 199711L) |
|
|
565 | #define ECB_CPP11 (__cplusplus >= 201103L) |
582 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
583 | |
|
|
584 | #if ECB_CPP |
|
|
585 | #define ECB_EXTERN_C extern "C" |
|
|
586 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
587 | #define ECB_EXTERN_C_END } |
|
|
588 | #else |
|
|
589 | #define ECB_EXTERN_C extern |
|
|
590 | #define ECB_EXTERN_C_BEG |
|
|
591 | #define ECB_EXTERN_C_END |
|
|
592 | #endif |
566 | |
593 | |
567 | /*****************************************************************************/ |
594 | /*****************************************************************************/ |
568 | |
595 | |
569 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
596 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
570 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
597 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
… | |
… | |
600 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
627 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
601 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
628 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
602 | #elif defined __s390__ || defined __s390x__ |
629 | #elif defined __s390__ || defined __s390x__ |
603 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
630 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
604 | #elif defined __mips__ |
631 | #elif defined __mips__ |
|
|
632 | /* GNU/Linux emulates sync on mips1 architectures, so we force it's use */ |
|
|
633 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
605 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
634 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
606 | #elif defined __alpha__ |
635 | #elif defined __alpha__ |
607 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
636 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
608 | #elif defined __hppa__ |
637 | #elif defined __hppa__ |
609 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
638 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
610 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
639 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
611 | #elif defined __ia64__ |
640 | #elif defined __ia64__ |
612 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
641 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
642 | #elif defined __m68k__ |
|
|
643 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
644 | #elif defined __m88k__ |
|
|
645 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
646 | #elif defined __sh__ |
|
|
647 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
613 | #endif |
648 | #endif |
614 | #endif |
649 | #endif |
615 | #endif |
650 | #endif |
616 | |
651 | |
617 | #ifndef ECB_MEMORY_FENCE |
652 | #ifndef ECB_MEMORY_FENCE |
618 | #if ECB_GCC_VERSION(4,7) |
653 | #if ECB_GCC_VERSION(4,7) |
619 | /* see comment below about the C11 memory model. in short - avoid */ |
654 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
620 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
655 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
656 | |
|
|
657 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
|
|
658 | * without risking compile time errors with other compilers. We *could* |
|
|
659 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
|
|
660 | * around this shit time and again. |
621 | #elif defined __clang && __has_feature (cxx_atomic) |
661 | * #elif defined __clang && __has_feature (cxx_atomic) |
622 | /* see above */ |
662 | * // see comment below (stdatomic.h) about the C11 memory model. |
623 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
663 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
664 | */ |
|
|
665 | |
624 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
666 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
625 | #define ECB_MEMORY_FENCE __sync_synchronize () |
667 | #define ECB_MEMORY_FENCE __sync_synchronize () |
626 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
668 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
627 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
669 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
628 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
670 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
… | |
… | |
644 | #ifndef ECB_MEMORY_FENCE |
686 | #ifndef ECB_MEMORY_FENCE |
645 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
687 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
646 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
688 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
647 | /* not just C11 atomics and atomic accesses */ |
689 | /* not just C11 atomics and atomic accesses */ |
648 | #include <stdatomic.h> |
690 | #include <stdatomic.h> |
649 | /* unfortunately, the C11 memory model seems to be very limited, and unable to express */ |
691 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
650 | /* simple barrier semantics. That means we need to take out thor's hammer. */ |
692 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
693 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
694 | /* for most usages, or gcc and clang have a bug */ |
|
|
695 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
696 | /* all three of ecb's fences as a seq_cst fence */ |
651 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
697 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
652 | #endif |
698 | #endif |
653 | #endif |
699 | #endif |
654 | |
700 | |
655 | #ifndef ECB_MEMORY_FENCE |
701 | #ifndef ECB_MEMORY_FENCE |
… | |
… | |
932 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
978 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
933 | ecb_inline void ecb_unreachable (void) { } |
979 | ecb_inline void ecb_unreachable (void) { } |
934 | #endif |
980 | #endif |
935 | |
981 | |
936 | /* try to tell the compiler that some condition is definitely true */ |
982 | /* try to tell the compiler that some condition is definitely true */ |
937 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
983 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
938 | |
984 | |
939 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
985 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
940 | ecb_inline unsigned char |
986 | ecb_inline unsigned char |
941 | ecb_byteorder_helper (void) |
987 | ecb_byteorder_helper (void) |
942 | { |
988 | { |
943 | const uint32_t u = 0x11223344; |
989 | /* the union code still generates code under pressure in gcc, */ |
944 | return *(unsigned char *)&u; |
990 | /* but less than using pointers, and always seems to */ |
|
|
991 | /* successfully return a constant. */ |
|
|
992 | /* the reason why we have this horrible preprocessor mess */ |
|
|
993 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
994 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
995 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
996 | return 0x44; |
|
|
997 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
998 | return 0x44; |
|
|
999 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
1000 | return 0x11; |
|
|
1001 | #else |
|
|
1002 | union |
|
|
1003 | { |
|
|
1004 | uint32_t i; |
|
|
1005 | uint8_t c; |
|
|
1006 | } u = { 0x11223344 }; |
|
|
1007 | return u.c; |
|
|
1008 | #endif |
945 | } |
1009 | } |
946 | |
1010 | |
947 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
1011 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
948 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
1012 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
949 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
1013 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
… | |
… | |
980 | } |
1044 | } |
981 | #else |
1045 | #else |
982 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
1046 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
983 | #endif |
1047 | #endif |
984 | |
1048 | |
|
|
1049 | /*******************************************************************************/ |
|
|
1050 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1051 | |
|
|
1052 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1053 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1054 | #if 0 \ |
|
|
1055 | || __i386 || __i386__ \ |
|
|
1056 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
|
|
1057 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1058 | || defined __arm__ && defined __ARM_EABI__ \ |
|
|
1059 | || defined __s390__ || defined __s390x__ \ |
|
|
1060 | || defined __mips__ \ |
|
|
1061 | || defined __alpha__ \ |
|
|
1062 | || defined __hppa__ \ |
|
|
1063 | || defined __ia64__ \ |
|
|
1064 | || defined __m68k__ \ |
|
|
1065 | || defined __m88k__ \ |
|
|
1066 | || defined __sh__ \ |
|
|
1067 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 |
|
|
1068 | #define ECB_STDFP 1 |
|
|
1069 | #include <string.h> /* for memcpy */ |
|
|
1070 | #else |
|
|
1071 | #define ECB_STDFP 0 |
|
|
1072 | #include <math.h> /* for frexp*, ldexp* */ |
|
|
1073 | #endif |
|
|
1074 | |
|
|
1075 | #ifndef ECB_NO_LIBM |
|
|
1076 | |
|
|
1077 | /* convert a float to ieee single/binary32 */ |
|
|
1078 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
|
|
1079 | ecb_function_ uint32_t |
|
|
1080 | ecb_float_to_binary32 (float x) |
|
|
1081 | { |
|
|
1082 | uint32_t r; |
|
|
1083 | |
|
|
1084 | #if ECB_STDFP |
|
|
1085 | memcpy (&r, &x, 4); |
|
|
1086 | #else |
|
|
1087 | /* slow emulation, works for anything but -0 */ |
|
|
1088 | uint32_t m; |
|
|
1089 | int e; |
|
|
1090 | |
|
|
1091 | if (x == 0e0f ) return 0x00000000U; |
|
|
1092 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1093 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1094 | if (x != x ) return 0x7fbfffffU; |
|
|
1095 | |
|
|
1096 | m = frexpf (x, &e) * 0x1000000U; |
|
|
1097 | |
|
|
1098 | r = m & 0x80000000U; |
|
|
1099 | |
|
|
1100 | if (r) |
|
|
1101 | m = -m; |
|
|
1102 | |
|
|
1103 | if (e <= -126) |
|
|
1104 | { |
|
|
1105 | m &= 0xffffffU; |
|
|
1106 | m >>= (-125 - e); |
|
|
1107 | e = -126; |
|
|
1108 | } |
|
|
1109 | |
|
|
1110 | r |= (e + 126) << 23; |
|
|
1111 | r |= m & 0x7fffffU; |
|
|
1112 | #endif |
|
|
1113 | |
|
|
1114 | return r; |
|
|
1115 | } |
|
|
1116 | |
|
|
1117 | /* converts an ieee single/binary32 to a float */ |
|
|
1118 | ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; |
|
|
1119 | ecb_function_ float |
|
|
1120 | ecb_binary32_to_float (uint32_t x) |
|
|
1121 | { |
|
|
1122 | float r; |
|
|
1123 | |
|
|
1124 | #if ECB_STDFP |
|
|
1125 | memcpy (&r, &x, 4); |
|
|
1126 | #else |
|
|
1127 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1128 | int neg = x >> 31; |
|
|
1129 | int e = (x >> 23) & 0xffU; |
|
|
1130 | |
|
|
1131 | x &= 0x7fffffU; |
|
|
1132 | |
|
|
1133 | if (e) |
|
|
1134 | x |= 0x800000U; |
|
|
1135 | else |
|
|
1136 | e = 1; |
|
|
1137 | |
|
|
1138 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1139 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1140 | |
|
|
1141 | r = neg ? -r : r; |
|
|
1142 | #endif |
|
|
1143 | |
|
|
1144 | return r; |
|
|
1145 | } |
|
|
1146 | |
|
|
1147 | /* convert a double to ieee double/binary64 */ |
|
|
1148 | ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; |
|
|
1149 | ecb_function_ uint64_t |
|
|
1150 | ecb_double_to_binary64 (double x) |
|
|
1151 | { |
|
|
1152 | uint64_t r; |
|
|
1153 | |
|
|
1154 | #if ECB_STDFP |
|
|
1155 | memcpy (&r, &x, 8); |
|
|
1156 | #else |
|
|
1157 | /* slow emulation, works for anything but -0 */ |
|
|
1158 | uint64_t m; |
|
|
1159 | int e; |
|
|
1160 | |
|
|
1161 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1162 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1163 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1164 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1165 | |
|
|
1166 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1167 | |
|
|
1168 | r = m & 0x8000000000000000;; |
|
|
1169 | |
|
|
1170 | if (r) |
|
|
1171 | m = -m; |
|
|
1172 | |
|
|
1173 | if (e <= -1022) |
|
|
1174 | { |
|
|
1175 | m &= 0x1fffffffffffffU; |
|
|
1176 | m >>= (-1021 - e); |
|
|
1177 | e = -1022; |
|
|
1178 | } |
|
|
1179 | |
|
|
1180 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1181 | r |= m & 0xfffffffffffffU; |
|
|
1182 | #endif |
|
|
1183 | |
|
|
1184 | return r; |
|
|
1185 | } |
|
|
1186 | |
|
|
1187 | /* converts an ieee double/binary64 to a double */ |
|
|
1188 | ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; |
|
|
1189 | ecb_function_ double |
|
|
1190 | ecb_binary64_to_double (uint64_t x) |
|
|
1191 | { |
|
|
1192 | double r; |
|
|
1193 | |
|
|
1194 | #if ECB_STDFP |
|
|
1195 | memcpy (&r, &x, 8); |
|
|
1196 | #else |
|
|
1197 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1198 | int neg = x >> 63; |
|
|
1199 | int e = (x >> 52) & 0x7ffU; |
|
|
1200 | |
|
|
1201 | x &= 0xfffffffffffffU; |
|
|
1202 | |
|
|
1203 | if (e) |
|
|
1204 | x |= 0x10000000000000U; |
|
|
1205 | else |
|
|
1206 | e = 1; |
|
|
1207 | |
|
|
1208 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1209 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1210 | |
|
|
1211 | r = neg ? -r : r; |
|
|
1212 | #endif |
|
|
1213 | |
|
|
1214 | return r; |
|
|
1215 | } |
|
|
1216 | |
|
|
1217 | #endif |
|
|
1218 | |
985 | #endif |
1219 | #endif |
986 | |
1220 | |
987 | /* ECB.H END */ |
1221 | /* ECB.H END */ |
988 | |
1222 | |
989 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
1223 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
… | |
… | |
1188 | } |
1422 | } |
1189 | |
1423 | |
1190 | static void * |
1424 | static void * |
1191 | ev_realloc_emul (void *ptr, long size) EV_THROW |
1425 | ev_realloc_emul (void *ptr, long size) EV_THROW |
1192 | { |
1426 | { |
1193 | #if __GLIBC__ |
|
|
1194 | return realloc (ptr, size); |
|
|
1195 | #else |
|
|
1196 | /* some systems, notably openbsd and darwin, fail to properly |
1427 | /* some systems, notably openbsd and darwin, fail to properly |
1197 | * implement realloc (x, 0) (as required by both ansi c-89 and |
1428 | * implement realloc (x, 0) (as required by both ansi c-89 and |
1198 | * the single unix specification, so work around them here. |
1429 | * the single unix specification, so work around them here. |
|
|
1430 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1431 | * despite documenting it otherwise. |
1199 | */ |
1432 | */ |
1200 | |
1433 | |
1201 | if (size) |
1434 | if (size) |
1202 | return realloc (ptr, size); |
1435 | return realloc (ptr, size); |
1203 | |
1436 | |
1204 | free (ptr); |
1437 | free (ptr); |
1205 | return 0; |
1438 | return 0; |
1206 | #endif |
|
|
1207 | } |
1439 | } |
1208 | |
1440 | |
1209 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
1441 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
1210 | |
1442 | |
1211 | void ecb_cold |
1443 | void ecb_cold |
… | |
… | |
1866 | static void noinline ecb_cold |
2098 | static void noinline ecb_cold |
1867 | evpipe_init (EV_P) |
2099 | evpipe_init (EV_P) |
1868 | { |
2100 | { |
1869 | if (!ev_is_active (&pipe_w)) |
2101 | if (!ev_is_active (&pipe_w)) |
1870 | { |
2102 | { |
|
|
2103 | int fds [2]; |
|
|
2104 | |
1871 | # if EV_USE_EVENTFD |
2105 | # if EV_USE_EVENTFD |
|
|
2106 | fds [0] = -1; |
1872 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
2107 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1873 | if (evfd < 0 && errno == EINVAL) |
2108 | if (fds [1] < 0 && errno == EINVAL) |
1874 | evfd = eventfd (0, 0); |
2109 | fds [1] = eventfd (0, 0); |
1875 | |
2110 | |
1876 | if (evfd >= 0) |
2111 | if (fds [1] < 0) |
1877 | { |
|
|
1878 | evpipe [0] = -1; |
|
|
1879 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1880 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1881 | } |
|
|
1882 | else |
|
|
1883 | # endif |
2112 | # endif |
1884 | { |
2113 | { |
1885 | while (pipe (evpipe)) |
2114 | while (pipe (fds)) |
1886 | ev_syserr ("(libev) error creating signal/async pipe"); |
2115 | ev_syserr ("(libev) error creating signal/async pipe"); |
1887 | |
2116 | |
1888 | fd_intern (evpipe [0]); |
2117 | fd_intern (fds [0]); |
1889 | fd_intern (evpipe [1]); |
|
|
1890 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1891 | } |
2118 | } |
1892 | |
2119 | |
|
|
2120 | evpipe [0] = fds [0]; |
|
|
2121 | |
|
|
2122 | if (evpipe [1] < 0) |
|
|
2123 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2124 | else |
|
|
2125 | { |
|
|
2126 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2127 | /* so that evpipe_write can always rely on its value. */ |
|
|
2128 | /* this branch does not do anything sensible on windows, */ |
|
|
2129 | /* so must not be executed on windows */ |
|
|
2130 | |
|
|
2131 | dup2 (fds [1], evpipe [1]); |
|
|
2132 | close (fds [1]); |
|
|
2133 | } |
|
|
2134 | |
|
|
2135 | fd_intern (evpipe [1]); |
|
|
2136 | |
|
|
2137 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
1893 | ev_io_start (EV_A_ &pipe_w); |
2138 | ev_io_start (EV_A_ &pipe_w); |
1894 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
2139 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1895 | } |
2140 | } |
1896 | } |
2141 | } |
1897 | |
2142 | |
… | |
… | |
1918 | ECB_MEMORY_FENCE_RELEASE; |
2163 | ECB_MEMORY_FENCE_RELEASE; |
1919 | |
2164 | |
1920 | old_errno = errno; /* save errno because write will clobber it */ |
2165 | old_errno = errno; /* save errno because write will clobber it */ |
1921 | |
2166 | |
1922 | #if EV_USE_EVENTFD |
2167 | #if EV_USE_EVENTFD |
1923 | if (evfd >= 0) |
2168 | if (evpipe [0] < 0) |
1924 | { |
2169 | { |
1925 | uint64_t counter = 1; |
2170 | uint64_t counter = 1; |
1926 | write (evfd, &counter, sizeof (uint64_t)); |
2171 | write (evpipe [1], &counter, sizeof (uint64_t)); |
1927 | } |
2172 | } |
1928 | else |
2173 | else |
1929 | #endif |
2174 | #endif |
1930 | { |
2175 | { |
1931 | #ifdef _WIN32 |
2176 | #ifdef _WIN32 |
… | |
… | |
1951 | int i; |
2196 | int i; |
1952 | |
2197 | |
1953 | if (revents & EV_READ) |
2198 | if (revents & EV_READ) |
1954 | { |
2199 | { |
1955 | #if EV_USE_EVENTFD |
2200 | #if EV_USE_EVENTFD |
1956 | if (evfd >= 0) |
2201 | if (evpipe [0] < 0) |
1957 | { |
2202 | { |
1958 | uint64_t counter; |
2203 | uint64_t counter; |
1959 | read (evfd, &counter, sizeof (uint64_t)); |
2204 | read (evpipe [1], &counter, sizeof (uint64_t)); |
1960 | } |
2205 | } |
1961 | else |
2206 | else |
1962 | #endif |
2207 | #endif |
1963 | { |
2208 | { |
1964 | char dummy[4]; |
2209 | char dummy[4]; |
… | |
… | |
2014 | |
2259 | |
2015 | void |
2260 | void |
2016 | ev_feed_signal (int signum) EV_THROW |
2261 | ev_feed_signal (int signum) EV_THROW |
2017 | { |
2262 | { |
2018 | #if EV_MULTIPLICITY |
2263 | #if EV_MULTIPLICITY |
|
|
2264 | EV_P; |
|
|
2265 | ECB_MEMORY_FENCE_ACQUIRE; |
2019 | EV_P = signals [signum - 1].loop; |
2266 | EV_A = signals [signum - 1].loop; |
2020 | |
2267 | |
2021 | if (!EV_A) |
2268 | if (!EV_A) |
2022 | return; |
2269 | return; |
2023 | #endif |
2270 | #endif |
2024 | |
2271 | |
2025 | if (!ev_active (&pipe_w)) |
|
|
2026 | return; |
|
|
2027 | |
|
|
2028 | signals [signum - 1].pending = 1; |
2272 | signals [signum - 1].pending = 1; |
2029 | evpipe_write (EV_A_ &sig_pending); |
2273 | evpipe_write (EV_A_ &sig_pending); |
2030 | } |
2274 | } |
2031 | |
2275 | |
2032 | static void |
2276 | static void |
… | |
… | |
2042 | void noinline |
2286 | void noinline |
2043 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
2287 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
2044 | { |
2288 | { |
2045 | WL w; |
2289 | WL w; |
2046 | |
2290 | |
2047 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
2291 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
2048 | return; |
2292 | return; |
2049 | |
2293 | |
2050 | --signum; |
2294 | --signum; |
2051 | |
2295 | |
2052 | #if EV_MULTIPLICITY |
2296 | #if EV_MULTIPLICITY |
… | |
… | |
2350 | #if EV_ASYNC_ENABLE |
2594 | #if EV_ASYNC_ENABLE |
2351 | async_pending = 0; |
2595 | async_pending = 0; |
2352 | #endif |
2596 | #endif |
2353 | pipe_write_skipped = 0; |
2597 | pipe_write_skipped = 0; |
2354 | pipe_write_wanted = 0; |
2598 | pipe_write_wanted = 0; |
|
|
2599 | evpipe [0] = -1; |
|
|
2600 | evpipe [1] = -1; |
2355 | #if EV_USE_INOTIFY |
2601 | #if EV_USE_INOTIFY |
2356 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2602 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2357 | #endif |
2603 | #endif |
2358 | #if EV_USE_SIGNALFD |
2604 | #if EV_USE_SIGNALFD |
2359 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2605 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
… | |
… | |
2422 | if (ev_is_active (&pipe_w)) |
2668 | if (ev_is_active (&pipe_w)) |
2423 | { |
2669 | { |
2424 | /*ev_ref (EV_A);*/ |
2670 | /*ev_ref (EV_A);*/ |
2425 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2671 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2426 | |
2672 | |
2427 | #if EV_USE_EVENTFD |
|
|
2428 | if (evfd >= 0) |
|
|
2429 | close (evfd); |
|
|
2430 | #endif |
|
|
2431 | |
|
|
2432 | if (evpipe [0] >= 0) |
|
|
2433 | { |
|
|
2434 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2673 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
2435 | EV_WIN32_CLOSE_FD (evpipe [1]); |
2674 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
2436 | } |
|
|
2437 | } |
2675 | } |
2438 | |
2676 | |
2439 | #if EV_USE_SIGNALFD |
2677 | #if EV_USE_SIGNALFD |
2440 | if (ev_is_active (&sigfd_w)) |
2678 | if (ev_is_active (&sigfd_w)) |
2441 | close (sigfd); |
2679 | close (sigfd); |
… | |
… | |
2527 | #endif |
2765 | #endif |
2528 | #if EV_USE_INOTIFY |
2766 | #if EV_USE_INOTIFY |
2529 | infy_fork (EV_A); |
2767 | infy_fork (EV_A); |
2530 | #endif |
2768 | #endif |
2531 | |
2769 | |
|
|
2770 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2532 | if (ev_is_active (&pipe_w)) |
2771 | if (ev_is_active (&pipe_w)) |
2533 | { |
2772 | { |
2534 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2773 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2535 | |
2774 | |
2536 | ev_ref (EV_A); |
2775 | ev_ref (EV_A); |
2537 | ev_io_stop (EV_A_ &pipe_w); |
2776 | ev_io_stop (EV_A_ &pipe_w); |
2538 | |
2777 | |
2539 | #if EV_USE_EVENTFD |
|
|
2540 | if (evfd >= 0) |
|
|
2541 | close (evfd); |
|
|
2542 | #endif |
|
|
2543 | |
|
|
2544 | if (evpipe [0] >= 0) |
2778 | if (evpipe [0] >= 0) |
2545 | { |
|
|
2546 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2779 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2547 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2548 | } |
|
|
2549 | |
2780 | |
2550 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2551 | evpipe_init (EV_A); |
2781 | evpipe_init (EV_A); |
2552 | /* now iterate over everything, in case we missed something */ |
2782 | /* iterate over everything, in case we missed something before */ |
2553 | pipecb (EV_A_ &pipe_w, EV_READ); |
2783 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
2554 | #endif |
|
|
2555 | } |
2784 | } |
|
|
2785 | #endif |
2556 | |
2786 | |
2557 | postfork = 0; |
2787 | postfork = 0; |
2558 | } |
2788 | } |
2559 | |
2789 | |
2560 | #if EV_MULTIPLICITY |
2790 | #if EV_MULTIPLICITY |
… | |
… | |
2759 | } |
2989 | } |
2760 | |
2990 | |
2761 | void noinline |
2991 | void noinline |
2762 | ev_invoke_pending (EV_P) |
2992 | ev_invoke_pending (EV_P) |
2763 | { |
2993 | { |
2764 | for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ |
2994 | pendingpri = NUMPRI; |
|
|
2995 | |
|
|
2996 | while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ |
|
|
2997 | { |
|
|
2998 | --pendingpri; |
|
|
2999 | |
2765 | while (pendingcnt [pendingpri]) |
3000 | while (pendingcnt [pendingpri]) |
2766 | { |
3001 | { |
2767 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
3002 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
2768 | |
3003 | |
2769 | p->w->pending = 0; |
3004 | p->w->pending = 0; |
2770 | EV_CB_INVOKE (p->w, p->events); |
3005 | EV_CB_INVOKE (p->w, p->events); |
2771 | EV_FREQUENT_CHECK; |
3006 | EV_FREQUENT_CHECK; |
2772 | } |
3007 | } |
|
|
3008 | } |
2773 | } |
3009 | } |
2774 | |
3010 | |
2775 | #if EV_IDLE_ENABLE |
3011 | #if EV_IDLE_ENABLE |
2776 | /* make idle watchers pending. this handles the "call-idle */ |
3012 | /* make idle watchers pending. this handles the "call-idle */ |
2777 | /* only when higher priorities are idle" logic */ |
3013 | /* only when higher priorities are idle" logic */ |
… | |
… | |
3135 | backend_poll (EV_A_ waittime); |
3371 | backend_poll (EV_A_ waittime); |
3136 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3372 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3137 | |
3373 | |
3138 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
3374 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
3139 | |
3375 | |
|
|
3376 | ECB_MEMORY_FENCE_ACQUIRE; |
3140 | if (pipe_write_skipped) |
3377 | if (pipe_write_skipped) |
3141 | { |
3378 | { |
3142 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
3379 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
3143 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3380 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3144 | } |
3381 | } |
… | |
… | |
3522 | #if EV_MULTIPLICITY |
3759 | #if EV_MULTIPLICITY |
3523 | assert (("libev: a signal must not be attached to two different loops", |
3760 | assert (("libev: a signal must not be attached to two different loops", |
3524 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3761 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3525 | |
3762 | |
3526 | signals [w->signum - 1].loop = EV_A; |
3763 | signals [w->signum - 1].loop = EV_A; |
|
|
3764 | ECB_MEMORY_FENCE_RELEASE; |
3527 | #endif |
3765 | #endif |
3528 | |
3766 | |
3529 | EV_FREQUENT_CHECK; |
3767 | EV_FREQUENT_CHECK; |
3530 | |
3768 | |
3531 | #if EV_USE_SIGNALFD |
3769 | #if EV_USE_SIGNALFD |
… | |
… | |
3686 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
3924 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
3687 | |
3925 | |
3688 | static void noinline |
3926 | static void noinline |
3689 | infy_add (EV_P_ ev_stat *w) |
3927 | infy_add (EV_P_ ev_stat *w) |
3690 | { |
3928 | { |
3691 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
3929 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
3930 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
3931 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
3932 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
3692 | |
3933 | |
3693 | if (w->wd >= 0) |
3934 | if (w->wd >= 0) |
3694 | { |
3935 | { |
3695 | struct statfs sfs; |
3936 | struct statfs sfs; |
3696 | |
3937 | |
… | |
… | |
3700 | |
3941 | |
3701 | if (!fs_2625) |
3942 | if (!fs_2625) |
3702 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3943 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3703 | else if (!statfs (w->path, &sfs) |
3944 | else if (!statfs (w->path, &sfs) |
3704 | && (sfs.f_type == 0x1373 /* devfs */ |
3945 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
3946 | || sfs.f_type == 0x4006 /* fat */ |
|
|
3947 | || sfs.f_type == 0x4d44 /* msdos */ |
3705 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
3948 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
3949 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
3950 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
3951 | || sfs.f_type == 0x5346544e /* ntfs */ |
3706 | || sfs.f_type == 0x3153464a /* jfs */ |
3952 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
3953 | || sfs.f_type == 0x9123683e /* btrfs */ |
3707 | || sfs.f_type == 0x52654973 /* reiser3 */ |
3954 | || sfs.f_type == 0x52654973 /* reiser3 */ |
3708 | || sfs.f_type == 0x01021994 /* tempfs */ |
3955 | || sfs.f_type == 0x01021994 /* tmpfs */ |
3709 | || sfs.f_type == 0x58465342 /* xfs */)) |
3956 | || sfs.f_type == 0x58465342 /* xfs */)) |
3710 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
3957 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
3711 | else |
3958 | else |
3712 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
3959 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
3713 | } |
3960 | } |