UniqueIdGenerator Class Reference

A generator for unique ids. More...

#include <OpenMS/CONCEPT/UniqueIdGenerator.h>

Static Public Member Functions
static UInt64	getUniqueId ()
	Returns a new unique id.
static std::string	getUUID ()
	Returns a new random UUID (version 4)
static void	setSeed (const UInt64)
	Initializes random generator using the given value.
static UInt64	getSeed ()
	Get the seed.

Protected Member Functions
	UniqueIdGenerator ()
	~UniqueIdGenerator ()

Private Member Functions
void	init_ ()
	UniqueIdGenerator (const UniqueIdGenerator &)

Static Private Member Functions
static UniqueIdGenerator &	getInstance_ ()

Static Private Attributes
static UInt64	seed_
static UniqueIdGenerator *	instance_
static std::mt19937_64 *	rng_

Detailed Description

A generator for unique ids.

The unique ids are 64-bit random unsigned random integers. The class is implemented as a singleton. The random generator is std::mt19937_64 (MT19937-64), whose output sequence is fully specified by the algorithm and therefore identical on every platform and standard library. Ids are the raw 64-bit engine output: drawing them through a uniform distribution over the complete UInt64 range would be the identity.

Constructor & Destructor Documentation

UniqueIdGenerator() [1/2]

UniqueIdGenerator ( )

protected

~UniqueIdGenerator()

~UniqueIdGenerator ( )

protected

UniqueIdGenerator() [2/2]

UniqueIdGenerator ( const UniqueIdGenerator &  )

private

Member Function Documentation

getInstance_()

static UniqueIdGenerator & getInstance_ ( )

staticprivate

getSeed()

static UInt64 getSeed ( )

static

Get the seed.

getUniqueId()

static UInt64 getUniqueId ( )

static

Returns a new unique id.

getUUID()

static std::string getUUID ( )

static

Returns a new random UUID (version 4)

Formatted as the standard 36-character string "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".

init_()

void init_ ( )

private

setSeed()

static void setSeed ( const UInt64  )

static

Initializes random generator using the given value.

Member Data Documentation

instance_

UniqueIdGenerator* instance_

staticprivate

rng_

std::mt19937_64* rng_

staticprivate

seed_

UInt64 seed_

staticprivate