esphome::SmallInlineBuffer< InlineSize > Class Template Reference

Small buffer optimization - stores data inline when small, heap-allocates for large data This avoids heap fragmentation for common small allocations while supporting arbitrary sizes. More...

#include <helpers.h>

Public Member Functions
	SmallInlineBuffer ()=default
	~SmallInlineBuffer ()
	SmallInlineBuffer (SmallInlineBuffer &&other) noexcept
SmallInlineBuffer &	operator= (SmallInlineBuffer &&other) noexcept
	SmallInlineBuffer (const SmallInlineBuffer &)=delete
SmallInlineBuffer &	operator= (const SmallInlineBuffer &)=delete
void	set (const uint8_t *src, size_t size)
	Set buffer contents, allocating heap if needed.
uint8_t *	data ()
const uint8_t *	data () const
size_t	size () const

Protected Member Functions
bool	is_inline_ () const

Protected Attributes
size_t	len_ {0}
union {
uint8_t   inline_ [InlineSize] {}
uint8_t *   heap_
};

Detailed Description

template<size_t InlineSize = 8>
class esphome::SmallInlineBuffer< InlineSize >

Small buffer optimization - stores data inline when small, heap-allocates for large data This avoids heap fragmentation for common small allocations while supporting arbitrary sizes.

Memory management is encapsulated - callers just use set() and data().

Definition at line 139 of file helpers.h.

Constructor & Destructor Documentation

SmallInlineBuffer() [1/3]

template<size_t InlineSize = 8>

esphome::SmallInlineBuffer< InlineSize >::SmallInlineBuffer ( )

default

~SmallInlineBuffer()

template<size_t InlineSize = 8>

esphome::SmallInlineBuffer< InlineSize >::~SmallInlineBuffer ( )

inline

Definition at line 142 of file helpers.h.

SmallInlineBuffer() [2/3]

template<size_t InlineSize = 8>

esphome::SmallInlineBuffer< InlineSize >::SmallInlineBuffer ( SmallInlineBuffer< InlineSize > && other )

inlinenoexcept

Definition at line 148 of file helpers.h.

SmallInlineBuffer() [3/3]

template<size_t InlineSize = 8>

esphome::SmallInlineBuffer< InlineSize >::SmallInlineBuffer ( const SmallInlineBuffer< InlineSize > & )

delete

Member Function Documentation

data() [1/2]

template<size_t InlineSize = 8>

uint8_t * esphome::SmallInlineBuffer< InlineSize >::data ( )

inline

Definition at line 194 of file helpers.h.

data() [2/2]

template<size_t InlineSize = 8>

const uint8_t * esphome::SmallInlineBuffer< InlineSize >::data ( ) const

inline

Definition at line 195 of file helpers.h.

is_inline_()

template<size_t InlineSize = 8>

bool esphome::SmallInlineBuffer< InlineSize >::is_inline_ ( ) const

inlineprotected

Definition at line 199 of file helpers.h.

operator=() [1/2]

template<size_t InlineSize = 8>

SmallInlineBuffer & esphome::SmallInlineBuffer< InlineSize >::operator= ( const SmallInlineBuffer< InlineSize > & )

delete

operator=() [2/2]

template<size_t InlineSize = 8>

SmallInlineBuffer & esphome::SmallInlineBuffer< InlineSize >::operator= ( SmallInlineBuffer< InlineSize > && other )

inlinenoexcept

Definition at line 159 of file helpers.h.

set()

template<size_t InlineSize = 8>

void esphome::SmallInlineBuffer< InlineSize >::set ( const uint8_t * src, size_t size )

inline

Set buffer contents, allocating heap if needed.

Definition at line 180 of file helpers.h.

size()

template<size_t InlineSize = 8>

size_t esphome::SmallInlineBuffer< InlineSize >::size ( ) const

inline

Definition at line 196 of file helpers.h.

Field Documentation

[union]

union { ... } esphome::SmallInlineBuffer< InlineSize >

heap_

template<size_t InlineSize = 8>

uint8_t* esphome::SmallInlineBuffer< InlineSize >::heap_

Definition at line 204 of file helpers.h.

inline_

template<size_t InlineSize = 8>

uint8_t esphome::SmallInlineBuffer< InlineSize >::inline_[InlineSize] {}

Definition at line 203 of file helpers.h.

len_

template<size_t InlineSize = 8>

size_t esphome::SmallInlineBuffer< InlineSize >::len_ {0}

protected

Definition at line 201 of file helpers.h.

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

• esphome/core/helpers.h