pw::multibuf::v1_adapter::SingleChunkRegionTracker Class Reference

Overview

Helper type that creates a single OwnedChunk from a region of memory and mimics v1::SingleChunkRegionTracker.

This type can be used as a drop-in replacement for v1::SingleChunkRegionTracker while migrating to using pw_multibuf/v2.

Inheritance diagram for pw::multibuf::v1_adapter::SingleChunkRegionTracker:

Public Member Functions
	SingleChunkRegionTracker ()
	SingleChunkRegionTracker (ByteSpan region)
ByteSpan	Region () const
std::optional< OwnedChunk >	GetChunk (size_t size)

Constructor & Destructor Documentation

SingleChunkRegionTracker() [1/2]

pw::multibuf::v1_adapter::SingleChunkRegionTracker::SingleChunkRegionTracker ( )

inline

Default constructor.

Callers must call SetRegion before calling GetChunk.

SingleChunkRegionTracker() [2/2]

pw::multibuf::v1_adapter::SingleChunkRegionTracker::SingleChunkRegionTracker ( ByteSpan  region )

inlineexplicit

Constructs a region tracker with a single Chunk that maps to region, which must outlive this tracker and any OwnedChunk it creates.

Member Function Documentation

GetChunk()

std::optional< OwnedChunk > pw::multibuf::v1_adapter::SingleChunkRegionTracker::GetChunk ( size_t  size )

inline

Gets a Chunk of a given size, which must be less than or equal to the provided region.

Returns: An OwnedChunk if the Chunk is free, otherwise std::nullopt, in which case GetChunk() can be called again.

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

• pw_multibuf/v1_adapter/public/pw_multibuf/v1_adapter/single_chunk_region_tracker.h