open3d::core::MemoryCache Class Reference

Public Member Functions
	MemoryCache ()=default
	MemoryCache (const MemoryCache &)=delete
MemoryCache &	operator= (const MemoryCache &)=delete
void *	Malloc (size_t byte_size)
void	Free (void *ptr)
void	Acquire (void *ptr, size_t byte_size, const std::shared_ptr< MemoryManagerDevice > &device_mm)
	Acquires ownership of the new real allocated blocks. More...
std::vector< std::pair< void *, std::shared_ptr< MemoryManagerDevice > > >	Release (size_t byte_size)
std::vector< std::pair< void *, std::shared_ptr< MemoryManagerDevice > > >	ReleaseAll ()
	Releases ownership of all unused real allocated blocks. More...
size_t	Size () const
	Returns the number of allocated real blocks. More...
bool	Empty () const
	True if the set of allocated real blocks is empty, false otherwise. More...

Static Public Member Functions
static size_t	AlignByteSize (size_t byte_size, size_t alignment=8)

Constructor & Destructor Documentation

MemoryCache() [1/2]

open3d::core::MemoryCache::MemoryCache ( )

default

MemoryCache() [2/2]

open3d::core::MemoryCache::MemoryCache ( const MemoryCache &  )

delete

Member Function Documentation

Acquire()

void open3d::core::MemoryCache::Acquire ( void *  ptr, size_t  byte_size, const std::shared_ptr< MemoryManagerDevice > &  device_mm  )

inline

Acquires ownership of the new real allocated blocks.

AlignByteSize()

static size_t open3d::core::MemoryCache::AlignByteSize ( size_t  byte_size, size_t  alignment = 8  )

inlinestatic

Computes an internal byte size that ensures a proper alignment of the real and virtual blocks.

Empty()

bool open3d::core::MemoryCache::Empty ( ) const

inline

True if the set of allocated real blocks is empty, false otherwise.

Free()

void open3d::core::MemoryCache::Free ( void *  ptr )

inline

Frees memory by moving the corresponding block to the set of free virtual blocks. Consecutive free virtual blocks belonging to the same real block are merged together.

Malloc()

void* open3d::core::MemoryCache::Malloc ( size_t  byte_size )

inline

Allocates memory from the set of free virtual blocks. Returns nullptr if no suitable block was found.

operator=()

MemoryCache& open3d::core::MemoryCache::operator= ( const MemoryCache &  )

delete

Release()

std::vector<std::pair<void*, std::shared_ptr<MemoryManagerDevice> > > open3d::core::MemoryCache::Release ( size_t  byte_size )

inline

Releases ownership of unused real allocated blocks whose sizes sum up to the requested byte size. Strategy:

• Best single fit: argmin_x { x.byte_size_ >= byte_size }.
• If not found, use next-best fit and repeat.

ReleaseAll()

std::vector<std::pair<void*, std::shared_ptr<MemoryManagerDevice> > > open3d::core::MemoryCache::ReleaseAll ( )

inline

Releases ownership of all unused real allocated blocks.

Size()

size_t open3d::core::MemoryCache::Size ( ) const

inline

Returns the number of allocated real blocks.

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

• /home/runner/work/Open3D/Open3D/cpp/open3d/core/MemoryManagerCached.cpp (5c982c7 (Thu Apr 18 12:15:13 2024 -0700))