DataBuffer2< sz, Pool > Class Template Reference

Inheritance diagram for DataBuffer2< sz, Pool >:

Collaboration diagram for DataBuffer2< sz, Pool >:

Classes
struct	ConstDataBufferIterator
struct	DataBufferIterator
struct	Head
struct	HeadPOD
struct	Segment

Public Types
typedef Pool	DataBufferPool
typedef DataBufferIterator	Iterator

Public Member Functions
	DataBuffer2 (DataBufferPool &)
bool	seize (Uint32 n)
void	release ()
Uint32	getSize () const
bool	isEmpty () const
void	print (FILE *) const
bool	first (DataBufferIterator &)
bool	next (DataBufferIterator &)
bool	next (DataBufferIterator &, Uint32 hops)
bool	nextPool (DataBufferIterator &)
bool	position (DataBufferIterator &it, Uint32 pos)
bool	first (ConstDataBufferIterator &) const
bool	next (ConstDataBufferIterator &) const
bool	next (ConstDataBufferIterator &, Uint32 hops) const
bool	nextPool (ConstDataBufferIterator &) const
bool	importable (const DataBufferIterator, Uint32 len)
bool	import (const DataBufferIterator &, const Uint32 *src, Uint32 len)
bool	append (const Uint32 *src, Uint32 len)

Static Public Member Functions
static Uint32	getSegmentSize ()
static void	createRecordInfo (Record_info &ri, Uint32 type_id)

Protected Attributes
Head	head
DataBufferPool &	thePool

Detailed Description

template<Uint32 sz, typename Pool>
class DataBuffer2< sz, Pool >

Definition at line 28 of file DataBuffer2.hpp.

Constructor & Destructor Documentation

template<Uint32 sz, typename Pool >

DataBuffer2< sz, Pool >::DataBuffer2 ( DataBufferPool &  p )

inline

Constructor

Definition at line 322 of file DataBuffer2.hpp.

Member Function Documentation

template<Uint32 sz, typename Pool >

bool DataBuffer2< sz, Pool >::append ( const Uint32 *  src, Uint32  len  )

inline

Increases size with appends len words

Returns

true if success, false otherwise.

Definition at line 271 of file DataBuffer2.hpp.

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template<Uint32 sz, typename Pool >

bool DataBuffer2< sz, Pool >::first ( DataBufferIterator &  it )

inline

Iterator hops Number of words to jump forward

Note

DataBuffer::next returns false if applied to last word.

Definition at line 441 of file DataBuffer2.hpp.

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template<Uint32 sz, typename Pool >

bool DataBuffer2< sz, Pool >::first ( ConstDataBufferIterator &  it ) const

inline

Iterator

Definition at line 474 of file DataBuffer2.hpp.

template<Uint32 sz, typename Pool >

Uint32 DataBuffer2< sz, Pool >::getSegmentSize ( )

inlinestatic

Get segment size in words (template argument)

Definition at line 434 of file DataBuffer2.hpp.

template<Uint32 sz, typename Pool >

Uint32 DataBuffer2< sz, Pool >::getSize ( ) const

inline

Get size of databuffer, in words

Definition at line 563 of file DataBuffer2.hpp.

template<Uint32 sz, typename Pool >

bool DataBuffer2< sz, Pool >::import ( const DataBufferIterator &  it, const Uint32 *  src, Uint32  len  )

inline

Stores len no of words starting at location src in databuffer at position given in iterator.

Returns

true if success, false otherwise.

Note

Iterator is not advanced.

Definition at line 234 of file DataBuffer2.hpp.

template<Uint32 sz, typename Pool >

bool DataBuffer2< sz, Pool >::importable ( const DataBufferIterator  it, Uint32  len  )

inline

Returns true if it is possible to store len no of words at position given in iterator.

Definition at line 213 of file DataBuffer2.hpp.

template<Uint32 sz, typename Pool >

bool DataBuffer2< sz, Pool >::isEmpty ( ) const

inline

Check if buffer is empty

Definition at line 570 of file DataBuffer2.hpp.

template<Uint32 sz, typename Pool >

bool DataBuffer2< sz, Pool >::position ( DataBufferIterator &  it, Uint32  pos  )

inline

Set iterator to position

Definition at line 219 of file DataBuffer2.hpp.

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template<Uint32 sz, typename Pool >

bool DataBuffer2< sz, Pool >::seize ( Uint32  n )

inline

Seize n words, Release

Definition at line 328 of file DataBuffer2.hpp.

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

• storage/ndb/src/kernel/vm/DataBuffer2.hpp