wyhash_v6 is coming about wyhash HOT 9 CLOSED

done

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And I want to sincerely say some sorry to @Cyan4973. I am just a childish person at age of 40 ...

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it's time to copy a separate wyhash_v5.h ?

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done. and let's wait a few days to update the stream version.

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many warnings

from 'long unsigned int' to 'long long int' [-Wnarrowing]

should use explicit conversions instead, e.g. (int64_t)seed, (int64_t)secret[x]

PS: better to add v5 to benchmark, in some old hardwares, short keys seems faster on v5

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done.

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wyhash crash v6

Program received signal SIGSEGV, Segmentation fault.
_wyhash (key=, len=, seed=8383780068391013234, secret=secret@entry=0x44c860 <_wyp>) at wyhash.h:102
102 __m128i d[8]={_mm_loadu_si128((__m128i*)p),_mm_loadu_si128((__m128i*)(p+16)),_mm_loadu_si128((__m128i*)(p+32)),_mm_loadu_si128((__m128i*)(p+48)),
(gdb) bt
#0 _wyhash (key=, len=, seed=8383780068391013234, secret=secret@entry=0x44c860 <_wyp>) at wyhash.h:102
#1 0x000000000042ad03 in wyhash (seed=, len=, key=) at wyhash.h:123
#2 emhash6::HashMap<std::__cxx11::basic_string<char, std::char_traits, std::allocator >, int, std::hash<std::__cxx11::basic_string<char, std::char_traits, std::allocator > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits, std::allocator > > >::hash_bucket<std::__cxx11::basic_string<char, std::char_traits, std::allocator >, 0u> (key=<error: Cannot access memory at address 0xffffffffffffffff>, this=0x7fffffffe270) at hash_table56.hpp:1632
#3 emhash6::HashMap<std::__cxx11::basic_string<char, std::char_traits, std::allocator >, int, std::hash<std::__cxx11::basic_string<char, std::char_traits, std::allocator > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits, std::allocator > > >::rehash (this=this@entry=0x7fffffffe270,
required_buckets=required_buckets@entry=6) at hash_table56.hpp:1113
#4 0x00000000004053d5 in emhash6::HashMap<std::__cxx11::basic_string<char, std::char_traits, std::allocator >, int, std::hash<std::__cxx11::basic_string<char, std::char_traits, std::allocator > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits, std::allocator > > >::reserve (num_elems=4, this=0x7fffffffe270)
at hash_table56.hpp:1060
#5 emhash6::HashMap<std::__cxx11::basic_string<char, std::char_traits, std::allocator >, int, std::hash<std::__cxx11::basic_string<char, std::char_traits, std::allocator > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits, std::allocator > > >::init (load_factor=0.949999988, bucket=4, this=0x7fffffffe270)
at hash_table56.hpp:345
#6 emhash6::HashMap<std::__cxx11::basic_string<char, std::char_traits, std::allocator >, int, std::hash<std::__cxx11::basic_string<char, std::char_traits, std::allocator > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits, std::allocator > > >::HashMap (load_factor=0.949999988, bucket=4, this=0x7fffffffe270)
at hash_table56.hpp:350
#7 main (argc=1, argv=0x7fffffffe408) at mbench.cpp:970

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what does these information mean? could you explain it to us :-)

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wyhash v6 in used int my hash map. I change the code and use the follow:

static inline uint64_t wyhash(const void* key, uint64_t len, uint64_t seed){ uint64_t h=_wyhash(key,len,seed,_wyp)^len; return _wymum(h,h^_wyp[9]);}

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