ripple::NodeStore::uniformIntDistribution< IntType > Struct Template Reference

std::uniform_int_distribution is platform dependent. More...

Classes
struct	paramType

Public Types
using	resultType = IntType

Public Member Functions
	uniformIntDistribution (const resultType a=0, const resultType b=std::numeric_limits< resultType >::max())
	uniformIntDistribution (const paramType &params)
template<class Generator >
resultType	operator() (Generator &g) const
template<class Generator >
resultType	operator() (Generator &g, const paramType &params) const
resultType	a () const
resultType	b () const
resultType	min () const
resultType	max () const

Public Attributes
const resultType	A
const resultType	B

Private Member Functions
template<class Generator >
resultType	rnd (Generator &g, const resultType a, const resultType b) const

Detailed Description

template<class IntType = int>
struct ripple::NodeStore::uniformIntDistribution< IntType >

std::uniform_int_distribution is platform dependent.

Unit test for deterministic shards is the following: it generates predictable accounts and transactions, packs them into ledgers and makes the shard. The hash of this shard should be equal to the given value. On different platforms (precisely, Linux and Mac) hashes of the resulting shard was different. It was unvestigated that the problem is in the class std::uniform_int_distribution which generates different pseudorandom sequences on different platforms, but we need predictable sequence.

Definition at line 60 of file DatabaseShard_test.cpp.

Member Typedef Documentation

resultType

template<class IntType = int>

using ripple::NodeStore::uniformIntDistribution< IntType >::resultType = IntType

Definition at line 62 of file DatabaseShard_test.cpp.

Constructor & Destructor Documentation

uniformIntDistribution() [1/2]

template<class IntType = int>

ripple::NodeStore::uniformIntDistribution< IntType >::uniformIntDistribution ( const resultType  a = 0, const resultType  b = std::numeric_limits<resultType>::max()  )

explicit

Definition at line 75 of file DatabaseShard_test.cpp.

uniformIntDistribution() [2/2]

template<class IntType = int>

ripple::NodeStore::uniformIntDistribution< IntType >::uniformIntDistribution ( const paramType &  params )

explicit

Definition at line 82 of file DatabaseShard_test.cpp.

Member Function Documentation

operator()() [1/2]

template<class IntType = int>

template<class Generator >

resultType ripple::NodeStore::uniformIntDistribution< IntType >::operator()

(

Generator &

g

)

const

Definition at line 89 of file DatabaseShard_test.cpp.

operator()() [2/2]

template<class IntType = int>

template<class Generator >

resultType ripple::NodeStore::uniformIntDistribution< IntType >::operator()	(	Generator &	g,
		const paramType &	params
	)		const

Definition at line 96 of file DatabaseShard_test.cpp.

a()

template<class IntType = int>

resultType ripple::NodeStore::uniformIntDistribution< IntType >::a

(

)

const

Definition at line 102 of file DatabaseShard_test.cpp.

b()

template<class IntType = int>

resultType ripple::NodeStore::uniformIntDistribution< IntType >::b

(

)

const

Definition at line 108 of file DatabaseShard_test.cpp.

min()

template<class IntType = int>

resultType ripple::NodeStore::uniformIntDistribution< IntType >::min

(

)

const

Definition at line 114 of file DatabaseShard_test.cpp.

max()

template<class IntType = int>

resultType ripple::NodeStore::uniformIntDistribution< IntType >::max

(

)

const

Definition at line 120 of file DatabaseShard_test.cpp.

rnd()

template<class IntType = int>

template<class Generator >

resultType ripple::NodeStore::uniformIntDistribution< IntType >::rnd ( Generator &  g, const resultType  a, const resultType  b  ) const

private

Definition at line 128 of file DatabaseShard_test.cpp.

Member Data Documentation

A

template<class IntType = int>

const resultType ripple::NodeStore::uniformIntDistribution< IntType >::A

Definition at line 64 of file DatabaseShard_test.cpp.

B

template<class IntType = int>

const resultType ripple::NodeStore::uniformIntDistribution< IntType >::B

Definition at line 64 of file DatabaseShard_test.cpp.