This template class implements a THREAD SAFE Ring Buffer AND it maintains/reports the number of elements stored in the ring buffer via a Model Point. More...

Detailed Description

template<class ITEM>
class Cpl::Container::RingBufferMP< ITEM >

This template class implements a THREAD SAFE Ring Buffer AND it maintains/reports the number of elements stored in the ring buffer via a Model Point.

The size of the ring buffer is limited by number of bits in platform's 'unsigned' data type.

Template Args: ITEM:= Type of the data stored in the Ring Buffer

#include <RingBufferMP.h>

Inheritance diagram for Cpl::Container::RingBufferMP< ITEM >:

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Collaboration diagram for Cpl::Container::RingBufferMP< ITEM >:

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Public Member Functions
	RingBufferMP (unsigned maxElements, ITEM memoryForElements[], Cpl::Dm::Mp::Uint32 &mpElementCount) noexcept
	Constructor.

bool	remove (ITEM &dst) noexcept
	See Cpl::Container::RingBuffer.

bool	remove (ITEM &dst, uint16_t &seqNum) noexcept
	Extends remove() to expose/return the MP's sequence number on the update.

bool	add (const ITEM &item) noexcept
	See Cpl::Container::RingBuffer.

bool	add (const ITEM &item, uint16_t &seqNum) noexcept
	Extends add() to expose/return the MP's sequence number on the update.

void	clearTheBuffer () noexcept
	See Cpl::Container::RingBuffer.

void	clearTheBuffer (uint16_t &seqNum) noexcept
	Extends add() to expose/return the MP's sequence number on the update.

Public Member Functions inherited from Cpl::Container::RingBufferMT< ITEM >
	RingBufferMT (unsigned maxElements, ITEM memoryForElements[]) noexcept
	Constructor.

bool	remove (ITEM &dst) noexcept
	See Cpl::Container::RingBuffer.

bool	add (const ITEM &item) noexcept
	See Cpl::Container::RingBuffer.

ITEM *	peekHead (void) const noexcept
	See Cpl::Container::RingBuffer.

ITEM *	peekTail (void) const noexcept
	See Cpl::Container::RingBuffer.

ITEM *	peekNextAddItems (unsigned &dstNumFlatElements) noexcept
	This method returns a pointer to the next item to be added.

void	addElements (unsigned numElementsAdded) noexcept
	This method 'adds' N elements - that were populated using the pointer returned from peekNextAddItems - to the ring buffer.

ITEM *	peekNextRemoveItems (unsigned &dstNumFlatElements) noexcept
	This method returns a pointer to the next item to be removed.

void	removeElements (unsigned numElementsToRemove) noexcept
	This method 'removes' N elements - that were removed using the pointer returned from peekNextRemoveItems - from the ring buffer.

bool	isEmpty (void) const noexcept
	See Cpl::Container::RingBuffer.

bool	isFull (void) const noexcept
	See Cpl::Container::RingBuffer.

unsigned	getNumItems (void) const noexcept
	See Cpl::Container::RingBuffer.

unsigned	getMaxItems (void) const noexcept
	See Cpl::Container::RingBuffer.

void	clearTheBuffer () noexcept
	See Cpl::Container::RingBuffer.

Public Member Functions inherited from Cpl::Container::RingBuffer< ITEM >
	RingBuffer (unsigned numElements, ITEM memoryForElements[]) noexcept
	Constructor.

bool	remove (ITEM &dst) noexcept
	Removes the first item in the Buffer.

bool	add (const ITEM &item) noexcept
	The contents of 'item' will be copied into the Ring Buffer as the 'last' item in the buffer.

ITEM *	peekHead (void) const noexcept
	Returns a pointer to the first item in the Buffer.

ITEM *	peekTail (void) const noexcept
	Returns a pointer to the last item in the Buffer.

bool	isEmpty (void) const noexcept
	This method returns true if the Ring Buffer is empty.

bool	isFull (void) const noexcept
	This method returns true if the Ring Buffer is full.

unsigned	getNumItems (void) const noexcept
	This method returns the current number of items in the Ring Buffer.

unsigned	getMaxItems (void) const noexcept
	This method returns the maximum number of items that can be stored in the Ring buffer.

void	clearTheBuffer () noexcept
	Empties the Ring Buffer.

ITEM *	peekNextRemoveItems (unsigned &dstNumFlatElements) noexcept
	This method returns a pointer to the next item to be removed.

void	removeElements (unsigned numElementsToRemove) noexcept
	This method 'removes' N elements - that were removed using the pointer returned from peekNextRemoveItems - from the ring buffer.

ITEM *	peekNextAddItems (unsigned &dstNumFlatElements) noexcept
	This method returns a pointer to the next item to be added.

void	addElements (unsigned numElementsAdded) noexcept
	This method 'adds' N elements - that were populated using the pointer returned from peekNextAddItems - to the ring buffer.

Public Attributes
Cpl::Dm::Mp::Uint32 &	m_mpElementCount
	Model point to report my element count. NOTE: Public access is allowed to simply the application subscribing/accessing the MP.

Protected Member Functions
uint16_t	incrementMp () noexcept
	helper method to increment the MP

uint16_t	decrementMp () noexcept
	helper method to decrement the MP

Additional Inherited Members
Protected Attributes inherited from Cpl::Container::RingBufferMT< ITEM >
Cpl::System::Mutex	m_lock
	Mutex for critical sections.

Constructor & Destructor Documentation

◆ RingBufferMP()

template<class ITEM >

Cpl::Container::RingBufferMP< ITEM >::RingBufferMP	(	unsigned	maxElements,
		ITEM	memoryForElements[],
		Cpl::Dm::Mp::Uint32 &	mpElementCount )

inlinenoexcept

Constructor.

The application is responsible for providing the memory for the Ring Buffer. The argument ''maxElements' is the number of items that will fit in the memory allocated by 'memoryForElements' - it is NOT the number of bytes of 'memoryForElements'.

Member Function Documentation

◆ add() [1/2]

template<class ITEM >

bool Cpl::Container::RingBufferMP< ITEM >::add ( const ITEM & item )

inlinenoexcept

See Cpl::Container::RingBuffer.

◆ add() [2/2]

template<class ITEM >

bool Cpl::Container::RingBufferMP< ITEM >::add	(	const ITEM &	item,
		uint16_t &	seqNum )

inlinenoexcept

Extends add() to expose/return the MP's sequence number on the update.

◆ clearTheBuffer() [1/2]

template<class ITEM >

void Cpl::Container::RingBufferMP< ITEM >::clearTheBuffer ( )

inlinenoexcept

See Cpl::Container::RingBuffer.

◆ clearTheBuffer() [2/2]

template<class ITEM >

void Cpl::Container::RingBufferMP< ITEM >::clearTheBuffer ( uint16_t & seqNum )

inlinenoexcept

Extends add() to expose/return the MP's sequence number on the update.

◆ decrementMp()

template<class ITEM >

uint16_t Cpl::Container::RingBufferMP< ITEM >::decrementMp ( )

inlineprotectednoexcept

helper method to decrement the MP

◆ incrementMp()

template<class ITEM >

uint16_t Cpl::Container::RingBufferMP< ITEM >::incrementMp ( )

inlineprotectednoexcept

helper method to increment the MP

◆ remove() [1/2]

template<class ITEM >

bool Cpl::Container::RingBufferMP< ITEM >::remove ( ITEM & dst )

inlinenoexcept

See Cpl::Container::RingBuffer.

◆ remove() [2/2]

template<class ITEM >

bool Cpl::Container::RingBufferMP< ITEM >::remove	(	ITEM &	dst,
		uint16_t &	seqNum )

inlinenoexcept

Extends remove() to expose/return the MP's sequence number on the update.

Member Data Documentation

◆ m_mpElementCount

template<class ITEM >

Cpl::Dm::Mp::Uint32& Cpl::Container::RingBufferMP< ITEM >::m_mpElementCount

Model point to report my element count. NOTE: Public access is allowed to simply the application subscribing/accessing the MP.

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

Cpl/Container/RingBufferMP.h

Detailed Description

Public Member Functions

Public Attributes

Protected Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ RingBufferMP()

Member Function Documentation

◆ add() [1/2]

◆ add() [2/2]

◆ clearTheBuffer() [1/2]

◆ clearTheBuffer() [2/2]

◆ decrementMp()

◆ incrementMp()

◆ remove() [1/2]

◆ remove() [2/2]

Member Data Documentation

◆ m_mpElementCount