absl::hash_internal::MixingHashState Class Reference

#include <hash.h>

Inheritance diagram for absl::hash_internal::MixingHashState:

Public Member Functions
	MixingHashState (MixingHashState &&)=default
MixingHashState &	operator= (MixingHashState &&)=default

Static Public Member Functions
static MixingHashState	combine_contiguous (MixingHashState hash_state, const unsigned char *first, size_t size)
template<typename T , absl::enable_if_t<!IntegralFastPath< T >::value, int > = 0>
static size_t	hash (const T &value)
template<typename T , absl::enable_if_t< IntegralFastPath< T >::value, int > = 0>
static size_t	hash (T value)
Static Public Member Functions inherited from absl::hash_internal::HashStateBase< MixingHashState >
static MixingHashState	combine (MixingHashState state)
static MixingHashState	combine (MixingHashState state)
static MixingHashState	combine (MixingHashState state, const T &value, const Ts &... values)
static MixingHashState	combine (MixingHashState state, const T &value, const Ts &... values)
static MixingHashState	combine_contiguous (MixingHashState state, const T *data, size_t size)
static MixingHashState	combine_contiguous (MixingHashState state, const T *data, size_t size)
static MixingHashState	combine_unordered (MixingHashState state, I begin, I end)

Private Types
template<typename T >
using	IntegralFastPath = conjunction< std::is_integral< T >, is_uniquely_represented< T > >
using	uint128 = absl::uint128

Private Member Functions
	MixingHashState ()
	MixingHashState (const MixingHashState &)=default
	MixingHashState (uint64_t state)

Static Private Member Functions
static uint64_t	CombineContiguousImpl (uint64_t state, const unsigned char *first, size_t len, std::integral_constant< int, 4 >)
static uint64_t	CombineContiguousImpl (uint64_t state, const unsigned char *first, size_t len, std::integral_constant< int, 8 >)
static uint64_t	CombineLargeContiguousImpl32 (uint64_t state, const unsigned char *first, size_t len)
static uint64_t	CombineLargeContiguousImpl64 (uint64_t state, const unsigned char *first, size_t len)
static ABSL_ATTRIBUTE_ALWAYS_INLINE uint64_t	Hash64 (const unsigned char *data, size_t len)
static uint64_t	LowLevelHashImpl (const unsigned char *data, size_t len)
static ABSL_ATTRIBUTE_ALWAYS_INLINE uint64_t	Mix (uint64_t state, uint64_t v)
static uint32_t	Read1To3 (const unsigned char *p, size_t len)
static uint64_t	Read4To8 (const unsigned char *p, size_t len)
static std::pair< uint64_t, uint64_t >	Read9To16 (const unsigned char *p, size_t len)
template<typename CombinerT >
static MixingHashState	RunCombineUnordered (MixingHashState state, CombinerT combiner)
static ABSL_ATTRIBUTE_ALWAYS_INLINE uint64_t	Seed ()

Private Attributes
uint64_t	state_

Static Private Attributes
static constexpr uint64_t	kMul
static const void *const	kSeed = &kSeed

Friends
class	absl::HashState
class	MixingHashState::HashStateBase

Additional Inherited Members
Public Types inherited from absl::hash_internal::HashStateBase< MixingHashState >
using	AbslInternalPiecewiseCombiner = PiecewiseCombiner
using	AbslInternalPiecewiseCombiner = PiecewiseCombiner
using	is_hashable = absl::hash_internal::is_hashable< T >

Detailed Description

Definition at line 927 of file abseil-cpp/absl/hash/internal/hash.h.

Member Typedef Documentation

IntegralFastPath

template<typename T >

using absl::hash_internal::MixingHashState::IntegralFastPath = conjunction<std::is_integral<T>, is_uniquely_represented<T> >

private

Definition at line 942 of file abseil-cpp/absl/hash/internal/hash.h.

uint128

using absl::hash_internal::MixingHashState::uint128 = absl::uint128

private

Definition at line 933 of file abseil-cpp/absl/hash/internal/hash.h.

Constructor & Destructor Documentation

MixingHashState() [1/4]

absl::hash_internal::MixingHashState::MixingHashState ( MixingHashState &&  )

default

MixingHashState() [2/4]

absl::hash_internal::MixingHashState::MixingHashState ( )

inlineprivate

Definition at line 983 of file abseil-cpp/absl/hash/internal/hash.h.

MixingHashState() [3/4]

absl::hash_internal::MixingHashState::MixingHashState ( const MixingHashState &  )

privatedefault

MixingHashState() [4/4]

absl::hash_internal::MixingHashState::MixingHashState ( uint64_t  state )

inlineexplicitprivate

Definition at line 1016 of file abseil-cpp/absl/hash/internal/hash.h.

Member Function Documentation

combine_contiguous()

static MixingHashState absl::hash_internal::MixingHashState::combine_contiguous ( MixingHashState  hash_state, const unsigned char *  first, size_t  size  )

inlinestatic

Definition at line 953 of file abseil-cpp/absl/hash/internal/hash.h.

CombineContiguousImpl() [1/2]

uint64_t absl::hash_internal::MixingHashState::CombineContiguousImpl ( uint64_t  state, const unsigned char *  first, size_t  len, std::integral_constant< int, 4 >    )

inlinestaticprivate

Definition at line 1151 of file abseil-cpp/absl/hash/internal/hash.h.

CombineContiguousImpl() [2/2]

uint64_t absl::hash_internal::MixingHashState::CombineContiguousImpl ( uint64_t  state, const unsigned char *  first, size_t  len, std::integral_constant< int, 8 >    )

inlinestaticprivate

Definition at line 1174 of file abseil-cpp/absl/hash/internal/hash.h.

CombineLargeContiguousImpl32()

uint64_t absl::hash_internal::MixingHashState::CombineLargeContiguousImpl32 ( uint64_t  state, const unsigned char *  first, size_t  len  )

staticprivate

Definition at line 21 of file abseil-cpp/absl/hash/internal/hash.cc.

CombineLargeContiguousImpl64()

uint64_t absl::hash_internal::MixingHashState::CombineLargeContiguousImpl64 ( uint64_t  state, const unsigned char *  first, size_t  len  )

staticprivate

Definition at line 35 of file abseil-cpp/absl/hash/internal/hash.cc.

hash() [1/2]

template<typename T , absl::enable_if_t<!IntegralFastPath< T >::value, int > = 0>

static size_t absl::hash_internal::MixingHashState::hash ( const T &  value )

inlinestatic

Definition at line 976 of file abseil-cpp/absl/hash/internal/hash.h.

hash() [2/2]

template<typename T , absl::enable_if_t< IntegralFastPath< T >::value, int > = 0>

static size_t absl::hash_internal::MixingHashState::hash ( T  value )

inlinestatic

Definition at line 970 of file abseil-cpp/absl/hash/internal/hash.h.

Hash64()

static ABSL_ATTRIBUTE_ALWAYS_INLINE uint64_t absl::hash_internal::MixingHashState::Hash64 ( const unsigned char *  data, size_t  len  )

inlinestaticprivate

Definition at line 1110 of file abseil-cpp/absl/hash/internal/hash.h.

LowLevelHashImpl()

uint64_t absl::hash_internal::MixingHashState::LowLevelHashImpl ( const unsigned char *  data, size_t  len  )

staticprivate

Definition at line 62 of file abseil-cpp/absl/hash/internal/hash.cc.

Mix()

static ABSL_ATTRIBUTE_ALWAYS_INLINE uint64_t absl::hash_internal::MixingHashState::Mix ( uint64_t  state, uint64_t  v  )

inlinestaticprivate

Definition at line 1092 of file abseil-cpp/absl/hash/internal/hash.h.

operator=()

MixingHashState& absl::hash_internal::MixingHashState::operator= ( MixingHashState &&  )

default

Read1To3()

static uint32_t absl::hash_internal::MixingHashState::Read1To3 ( const unsigned char *  p, size_t  len  )

inlinestaticprivate

Definition at line 1074 of file abseil-cpp/absl/hash/internal/hash.h.

Read4To8()

static uint64_t absl::hash_internal::MixingHashState::Read4To8 ( const unsigned char *  p, size_t  len  )

inlinestaticprivate

Definition at line 1059 of file abseil-cpp/absl/hash/internal/hash.h.

Read9To16()

static std::pair<uint64_t, uint64_t> absl::hash_internal::MixingHashState::Read9To16 ( const unsigned char *  p, size_t  len  )

inlinestaticprivate

Definition at line 1044 of file abseil-cpp/absl/hash/internal/hash.h.

RunCombineUnordered()

template<typename CombinerT >

static MixingHashState absl::hash_internal::MixingHashState::RunCombineUnordered ( MixingHashState  state, CombinerT  combiner  )

inlinestaticprivate

Definition at line 988 of file abseil-cpp/absl/hash/internal/hash.h.

Seed()

static ABSL_ATTRIBUTE_ALWAYS_INLINE uint64_t absl::hash_internal::MixingHashState::Seed ( )

inlinestaticprivate

Definition at line 1135 of file abseil-cpp/absl/hash/internal/hash.h.

Friends And Related Function Documentation

absl::HashState

friend class absl::HashState

friend

Definition at line 1008 of file abseil-cpp/absl/hash/internal/hash.h.

MixingHashState::HashStateBase

friend class MixingHashState::HashStateBase

friend

Definition at line 985 of file abseil-cpp/absl/hash/internal/hash.h.

Member Data Documentation

kMul

constexpr uint64_t absl::hash_internal::MixingHashState::kMul

staticconstexprprivate

Initial value:

=
      sizeof(size_t) == 4 ? uint64_t{0xcc9e2d51}
                          : uint64_t{0x9ddfea08eb382d69}

Definition at line 936 of file abseil-cpp/absl/hash/internal/hash.h.

kSeed

const ABSL_CONST_INIT void *const absl::hash_internal::MixingHashState::kSeed = &kSeed

staticprivate

Definition at line 1145 of file abseil-cpp/absl/hash/internal/hash.h.

state_

uint64_t absl::hash_internal::MixingHashState::state_

private

Definition at line 1147 of file abseil-cpp/absl/hash/internal/hash.h.

---

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

• abseil-cpp/absl/hash/internal/hash.h
• abseil-cpp/absl/hash/internal/hash.cc