ns3::Hash::Implementation Class Reference

Hash function implementation base class. More...

#include <hash-function.h>

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Public Member Functions
	Implementation ()
virtual	~Implementation ()
virtual void	clear (void)=0
virtual uint32_t	GetHash32 (const char *buffer, const size_t size)=0
virtual uint64_t	GetHash64 (const char *buffer, const size_t size)
Public Member Functions inherited from ns3::SimpleRefCount< Implementation >
	SimpleRefCount ()
	SimpleRefCount (const SimpleRefCount &o)
uint32_t	GetReferenceCount (void) const
SimpleRefCount &	operator= (const SimpleRefCount &o)
void	Ref (void) const
void	Unref (void) const

Additional Inherited Members
Static Public Member Functions inherited from ns3::SimpleRefCount< Implementation >
static void	Cleanup (void)

Detailed Description

Hash function implementation base class.

Definition at line 40 of file hash-function.h.

Constructor & Destructor Documentation

ns3::Hash::Implementation::Implementation ( )

inline

Constructor

Definition at line 82 of file hash-function.h.

virtual ns3::Hash::Implementation::~Implementation ( )

inlinevirtual

Destructor

Definition at line 86 of file hash-function.h.

Member Function Documentation

virtual void ns3::Hash::Implementation::clear ( void  )

pure virtual

Restore initial state

Implemented in ns3::Hash::Function::Hash64, ns3::Hash::Function::Hash32, ns3::Hash::Function::Fnv1a, and ns3::Hash::Function::Murmur3.

Referenced by ns3::Hasher::clear().

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virtual uint32_t ns3::Hash::Implementation::GetHash32 ( const char *  buffer, const size_t  size  )

pure virtual

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

Implemented in ns3::Hash::Function::Hash64, ns3::Hash::Function::Hash32, ns3::Hash::Function::Fnv1a, and ns3::Hash::Function::Murmur3.

Referenced by ns3::Hasher::GetHash32(), and GetHash64().

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uint64_t ns3::Hash::Implementation::GetHash64 ( const char *  buffer, const size_t  size  )

virtual

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 in ns3::Hash::Function::Hash64, ns3::Hash::Function::Fnv1a, and ns3::Hash::Function::Murmur3.

Definition at line 32 of file hash-function.cc.

References GetHash32(), and NS_LOG_WARN.

Referenced by ns3::Hasher::GetHash64().

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

• src/core/model/hash-function.h
• src/core/model/hash-function.cc