open3d::core::MemoryManagerCached Class Reference

#include <MemoryManager.h>

Inheritance diagram for open3d::core::MemoryManagerCached:

Public Member Functions
	MemoryManagerCached (const std::shared_ptr< MemoryManagerDevice > &device_mm)
void *	Malloc (size_t byte_size, const Device &device) override
void	Free (void *ptr, const Device &device) override
	Frees previously allocated memory at address ptr on device device. More...
void	Memcpy (void *dst_ptr, const Device &dst_device, const void *src_ptr, const Device &src_device, size_t num_bytes) override
Public Member Functions inherited from open3d::core::MemoryManagerDevice
virtual	~MemoryManagerDevice ()=default
virtual void *	Malloc (size_t byte_size, const Device &device)=0
virtual void	Free (void *ptr, const Device &device)=0
	Frees previously allocated memory at address ptr on device device. More...
virtual void	Memcpy (void *dst_ptr, const Device &dst_device, const void *src_ptr, const Device &src_device, size_t num_bytes)=0

Static Public Member Functions
static void	ReleaseCache (const Device &device)
	Frees all releasable memory blocks on device device. More...
static void	ReleaseCache ()

Protected Attributes
std::shared_ptr< MemoryManagerDevice >	device_mm_

Detailed Description

Generic cached memory manager. This class can be used to speed-up memory allocations and deallocations from arbitrary direct memory managers.

• Successful queries, i.e. cache hits, will result in constant-time allocations, but small direct allocations might still be faster.
• Failed queries, i.e. cache misses, will result in direct allocations.
• Direct frees will be delayed until either the end of the program or a cache release is triggered.
• (Partial) cache releases will be triggered either manually by calling ReleaseCache or automatically if a direct allocation fails after observing a cache miss.

Constructor & Destructor Documentation

MemoryManagerCached()

open3d::core::MemoryManagerCached::MemoryManagerCached ( const std::shared_ptr< MemoryManagerDevice > &  device_mm )

explicit

Constructs a cached memory manager instance that wraps the existing direct memory manager device_mm.

Member Function Documentation

Free()

void open3d::core::MemoryManagerCached::Free ( void *  ptr, const Device &  device  )

overridevirtual

Frees previously allocated memory at address ptr on device device.

Implements open3d::core::MemoryManagerDevice.

Malloc()

void * open3d::core::MemoryManagerCached::Malloc ( size_t  byte_size, const Device &  device  )

overridevirtual

Allocates memory of byte_size bytes on device device and returns a pointer to the beginning of the allocated memory block.

Implements open3d::core::MemoryManagerDevice.

Memcpy()

void open3d::core::MemoryManagerCached::Memcpy ( void *  dst_ptr, const Device &  dst_device, const void *  src_ptr, const Device &  src_device, size_t  num_bytes  )

overridevirtual

Copies num_bytes bytes of memory at address src_ptr on device src_device to address dst_ptr on device dst_device.

Implements open3d::core::MemoryManagerDevice.

ReleaseCache() [1/2]

void open3d::core::MemoryManagerCached::ReleaseCache ( )

static

Frees all releasable memory blocks on all known devices. Note that this may also affect other instances of MemoryManagerCached.

ReleaseCache() [2/2]

void open3d::core::MemoryManagerCached::ReleaseCache ( const Device &  device )

static

Frees all releasable memory blocks on device device.

Field Documentation

device_mm_

std::shared_ptr<MemoryManagerDevice> open3d::core::MemoryManagerCached::device_mm_

protected

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

• cpp/open3d/core/MemoryManager.h
• cpp/open3d/core/MemoryManagerCached.cpp