openmsx::TigerTree Class Reference

Calculate a tiger-tree-hash. More...

#include <TigerTree.hh>

Public Member Functions
	TigerTree (TTData &data, size_t dataSize, const std::string &name)
	Create TigerTree calculator for the given (abstract) data block of given size.
const TigerHash &	calcHash (const std::function< void(size_t, size_t)> &progressCallback)
	Calculate the hash value.
void	notifyChange (size_t offset, size_t len, time_t time)
	Inform this calculator about changes in the input data.

Static Public Attributes
static constexpr size_t	BLOCK_SIZE = 1024

Detailed Description

Calculate a tiger-tree-hash.

Calculation can be done incrementally, so recalculating the hash after a (small) modification of the input is efficient.

Definition at line 72 of file TigerTree.hh.

Constructor & Destructor Documentation

TigerTree()

openmsx::TigerTree::TigerTree	(	TTData &	data,
		size_t	dataSize,
		const std::string &	name
	)

Create TigerTree calculator for the given (abstract) data block of given size.

Definition at line 47 of file TigerTree.cc.

Member Function Documentation

calcHash()

const TigerHash & openmsx::TigerTree::calcHash

(

const std::function< void(size_t, size_t)> &

progressCallback

)

Calculate the hash value.

Definition at line 54 of file TigerTree.cc.

References calcHash().

Referenced by calcHash(), and TEST_CASE().

notifyChange()

void openmsx::TigerTree::notifyChange	(	size_t	offset,
		size_t	len,
		time_t	time
	)

Inform this calculator about changes in the input data.

This is used to (not) skip re-calculations on future calcHash() calls. So it's crucial this calculator is informed about all changes in the input.

Definition at line 59 of file TigerTree.cc.

References BLOCK_SIZE, openmsx::TTCacheEntry::numNodesValid, openmsx::TTCacheEntry::time, and openmsx::TTCacheEntry::valid.

Referenced by TEST_CASE().

Member Data Documentation

BLOCK_SIZE

constexpr size_t openmsx::TigerTree::BLOCK_SIZE = 1024

staticconstexpr

Definition at line 75 of file TigerTree.hh.

Referenced by notifyChange(), and TEST_CASE().

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

• TigerTree.hh
• TigerTree.cc