RingBuffer Class Reference

Ring buffer operations on a device. More...

#include <cvb/driver/ring_buffer.hpp>

Inherits enable_shared_from_this< RingBuffer >.

Public Member Functions
DevicePtr	Parent () const noexcept
	Gets the parent device of this ring buffer.
RingBufferImagePtr	At (int bufferIndex) const
	Access to a single ring buffer image specified by its buffer index.
int	Count () const noexcept
	Number of buffers in the ring buffer.
RingBufferLockMode	LockMode () const noexcept
	Gets the current lock mode.
void	SetLockMode (RingBufferLockMode ringBufferLockMode)
	Sets the current lock mode.
void	ChangeCount (int numBuffers, DeviceUpdateMode mode)
	Changes the number of buffers in this ring buffer.

Detailed Description

Ring buffer operations on a device.

Member Function Documentation

At()

RingBufferImagePtr At ( int bufferIndex ) const

inline

Access to a single ring buffer image specified by its buffer index.

Parameters

[in]

bufferIndex

Image index of the ring buffer image to access.

Returns

A pointer to the requested image.

Exceptions

Any	exception derived from std::exception including CvbException.

ChangeCount()

void ChangeCount ( int numBuffers, DeviceUpdateMode mode )

inline

Changes the number of buffers in this ring buffer.

Parameters

[in]	numBuffers	New number of buffers in the ring buffer.
[in]	mode	Defines how to handle device images.

Exceptions

Any	exception derived from std::exception including CvbException.

If you are unsure about the mode, simply use DeviceUpdateMode::UpdateDeviceImage.

Attention

Calling ChangeCount in DeviceUpdateMode::UpdateDeviceImage mode will discared all buffers with which the device was created with and free the memory ONLY if no NotifyObservablePtr are held.

Count()

int Count ( ) const

inlinenoexcept

Number of buffers in the ring buffer.

Returns

Number of buffers.

Exceptions

Does	not throw any exception.

LockMode()

RingBufferLockMode LockMode ( ) const

inlinenoexcept

Gets the current lock mode.

Returns

The current lock mode.

Exceptions

Does	not throw any exception.

Parent()

DevicePtr Parent ( ) const

inlinenoexcept

Gets the parent device of this ring buffer.

Returns

The parent device pointer.

Exceptions

Does	not throw any exception.

SetLockMode()

void SetLockMode ( RingBufferLockMode ringBufferLockMode )

inline

Sets the current lock mode.

Parameters

[in]

ringBufferLockMode

The new lock mode.

Exceptions

Any	exception derived from std::exception including CvbException.