FXxHash128 Struct Reference

#include <xxhash.h>

Public Member Functions
void	ToByteArray (uint8(&Bytes)[sizeof(uint64[2])]) const
bool	operator== (const FXxHash128 &B) const
bool	operator!= (const FXxHash128 &B) const
bool	operator< (const FXxHash128 &B) const
bool	IsZero () const

Static Public Member Functions
static CORE_API FXxHash128	HashBuffer (FMemoryView View)
static CORE_API FXxHash128	HashBuffer (const void *Data, uint64 Size)
static CORE_API FXxHash128	HashBuffer (const FCompositeBuffer &Buffer)
static CORE_API FXxHash128	HashBufferChunked (FMemoryView View, uint64 ChunkSize)
static CORE_API FXxHash128	HashBufferChunked (const void *Data, uint64 Size, uint64 ChunkSize)
static FXxHash128	FromByteArray (const uint8(&Bytes)[sizeof(uint64[2])])

Public Attributes
uint64	HashLow {}
uint64	HashHigh {}

Friends
uint32	GetTypeHash (const FXxHash128 &Hash)
FArchive &	operator<< (FArchive &Ar, FXxHash128 &Hash)
template<typename CharType >
TStringBuilderBase< CharType > &	operator<< (TStringBuilderBase< CharType > &Builder, const FXxHash128 &Hash)

Detailed Description

A 128-bit hash from XXH128.

Member Function Documentation

FromByteArray()

static FXxHash128 FXxHash128::FromByteArray ( const uint8(&)  Bytes[sizeof(uint64[2] )

inlinestatic

Load the hash from its canonical (big-endian) representation.

HashBuffer() [1/3]

FXxHash128 FXxHash128::HashBuffer ( const FCompositeBuffer &  Buffer )

static

HashBuffer() [2/3]

FXxHash128 FXxHash128::HashBuffer ( const void *  Data, uint64  Size  )

static

HashBuffer() [3/3]

FXxHash128 FXxHash128::HashBuffer ( FMemoryView  View )

static

HashBufferChunked() [1/2]

FXxHash128 FXxHash128::HashBufferChunked ( const void *  Data, uint64  Size, uint64  ChunkSize  )

static

HashBufferChunked() [2/2]

FXxHash128 FXxHash128::HashBufferChunked ( FMemoryView  View, uint64  ChunkSize  )

static

Hash the buffer in parallel in independent chunks, and hash those hashes.

Use a ChunkSize large enough to cover task overhead, e.g., 256+ KiB. Hashing the same buffer with different chunk sizes produces a different output hash.

IsZero()

bool FXxHash128::IsZero ( ) const

inline

operator!=()

bool FXxHash128::operator!= ( const FXxHash128 &  B ) const

inline

operator<()

bool FXxHash128::operator< ( const FXxHash128 &  B ) const

inline

operator==()

bool FXxHash128::operator== ( const FXxHash128 &  B ) const

inline

ToByteArray()

void FXxHash128::ToByteArray ( uint8(&)  Bytes[sizeof(uint64[2] ) const

inline

Store the hash to its canonical (big-endian) representation.

Friends And Related Symbol Documentation

GetTypeHash

uint32 GetTypeHash ( const FXxHash128 &  Hash )

friend

operator<< [1/2]

FArchive & operator<< ( FArchive &  Ar, FXxHash128 &  Hash  )

friend

operator<< [2/2]

template<typename CharType >

TStringBuilderBase< CharType > & operator<< ( TStringBuilderBase< CharType > &  Builder, const FXxHash128 &  Hash  )

friend

Member Data Documentation

HashHigh

uint64 FXxHash128::HashHigh {}

The high 64 bits of the hash in its native representation.

Use the canonical representation from ToByteArray to serialize or display the hash.

HashLow

uint64 FXxHash128::HashLow {}

The low 64 bits of the hash in its native representation.

Use the canonical representation from ToByteArray to serialize or display the hash.

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The documentation for this struct was generated from the following files:

• Engine/Source/Runtime/Core/Public/Hash/xxhash.h
• Engine/Source/Runtime/Core/Private/Hash/xxhash.cpp