ns3::Hash::Function::Hash64 Class Reference

Template for creating a Hash::Implementation from a 64-bit hash function. More...

#include "hash-function.h"

Inheritance diagram for ns3::Hash::Function::Hash64:

Collaboration diagram for ns3::Hash::Function::Hash64:

Public Member Functions
	Hash64 (Hash64Function_ptr hp)
	Constructor from a 64-bit hash function pointer. More...
void	clear () override
	Restore initial state. More...
uint32_t	GetHash32 (const char *buffer, const std::size_t size) override
	Compute 32-bit hash of a byte buffer. More...
uint64_t	GetHash64 (const char *buffer, const std::size_t size) override
	Compute 64-bit hash of a byte buffer. More...
Public Member Functions inherited from ns3::Hash::Implementation
	Implementation ()
	Constructor. More...
virtual	~Implementation ()
	Destructor. More...
Public Member Functions inherited from ns3::SimpleRefCount< Implementation >
	SimpleRefCount ()
	Default constructor. More...
	SimpleRefCount (const SimpleRefCount &o[[maybe_unused]])
	Copy constructor. More...
uint32_t	GetReferenceCount () const
	Get the reference count of the object. More...
SimpleRefCount &	operator= (const SimpleRefCount &o[[maybe_unused]])
	Assignment operator. More...
void	Ref () const
	Increment the reference count. More...
void	Unref () const
	Decrement the reference count. More...

Private Attributes
Hash64Function_ptr	m_fp
	The hash function. More...

Detailed Description

Template for creating a Hash::Implementation from a 64-bit hash function.

Definition at line 168 of file hash-function.h.

Constructor & Destructor Documentation

Hash64()

ns3::Hash::Function::Hash64::Hash64 ( Hash64Function_ptr  hp )

inline

Constructor from a 64-bit hash function pointer.

Parameters

[in]

hp

Function pointer to a 64-bit hash function.

Definition at line 176 of file hash-function.h.

Member Function Documentation

clear()

void ns3::Hash::Function::Hash64::clear ( )

inlineoverridevirtual

Restore initial state.

Implements ns3::Hash::Implementation.

Definition at line 195 of file hash-function.h.

GetHash32()

uint32_t ns3::Hash::Function::Hash64::GetHash32 ( const char *  buffer, const std::size_t  size  )

inlineoverridevirtual

Compute 32-bit hash of a byte buffer.

Call clear() between calls to GetHash32() to reset the internal state and hash each buffer separately.

If you don't call clear() between calls to GetHash32, you can hash successive buffers. The final return value will be the cumulative hash across all calls.

Parameters

[in]	buffer	Pointer to the beginning of the buffer.
[in]	size	Length of the buffer, in bytes.

Returns

32-bit hash of the buffer.

Implements ns3::Hash::Implementation.

Definition at line 186 of file hash-function.h.

References GetHash64().

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GetHash64()

uint64_t ns3::Hash::Function::Hash64::GetHash64 ( const char *  buffer, const std::size_t  size  )

inlineoverridevirtual

Compute 64-bit hash of a byte buffer.

Default implementation returns 32-bit hash, with a warning.

Call clear() between calls to GetHash64() to reset the internal state and hash each buffer separately.

If you don't call clear() between calls to GetHash64, you can hash successive buffers. The final return value will be the cumulative hash across all calls.

Parameters

[in]	buffer	Pointer to the beginning of the buffer.
[in]	size	Length of the buffer, in bytes.

Returns

64-bit hash of the buffer.

Reimplemented from ns3::Hash::Implementation.

Definition at line 181 of file hash-function.h.

References m_fp.

Referenced by GetHash32().

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Member Data Documentation

m_fp

Hash64Function_ptr ns3::Hash::Function::Hash64::m_fp

private

The hash function.

Definition at line 200 of file hash-function.h.

Referenced by GetHash64().

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

• src/core/model/hash-function.h