kfusion::cuda::DeviceMemory Class Reference

DeviceMemory class More...

#include <device_memory.hpp>

Inheritance diagram for kfusion::cuda::DeviceMemory:

Public Member Functions
void	copyTo (DeviceMemory &other) const
	Performs data copying. If destination size differs it will be reallocated. More...
void	create (size_t sizeBytes_arg)
	Allocates internal buffer in GPU memory. If internal buffer was created before the function recreates it with new size. If new and old sizes are equal it does nothing. More...
	DeviceMemory ()
	Empty constructor. More...
	DeviceMemory (size_t sizeBytes_arg)
	Allocates internal buffer in GPU memory. More...
	DeviceMemory (void *ptr_arg, size_t sizeBytes_arg)
	Initializes with user allocated buffer. Reference counting is disabled in this case. More...
	DeviceMemory (const DeviceMemory &other_arg)
	Copy constructor. Just increments reference counter. More...
void	download (void *host_ptr_arg) const
	Downloads data from internal buffer to CPU memory. More...
bool	empty () const
	Returns true if unallocated otherwise false. More...
template<class U >
	operator PtrSz< U > () const
	Conversion to PtrSz for passing to kernel functions. More...
DeviceMemory &	operator= (const DeviceMemory &other_arg)
	Assigment operator. Just increments reference counter. More...
template<class T >
T *	ptr ()
	Returns pointer for internal buffer in GPU memory. More...
template<class T >
const T *	ptr () const
	Returns constant pointer for internal buffer in GPU memory. More...
void	release ()
	Decrements reference counter and releases internal buffer if needed. More...
size_t	sizeBytes () const
void	swap (DeviceMemory &other_arg)
	Performs swap of data pointed with another device memory. More...
void	upload (const void *host_ptr_arg, size_t sizeBytes_arg)
	Uploads data to internal buffer in GPU memory. It calls create() inside to ensure that intenal buffer size is enough. More...
	~DeviceMemory ()
	Destructor. More...

Private Attributes
void *	data_
	Device pointer. More...
int *	refcount_
	Pointer to reference counter in CPU memory. More...
size_t	sizeBytes_
	Allocated size in bytes. More...

Detailed Description

DeviceMemory class

Note

This is a BLOB container class with reference counting for GPU memory.

Author

Anatoly Baksheev

Definition at line 21 of file device_memory.hpp.

Constructor & Destructor Documentation

DeviceMemory() [1/4]

kfusion::cuda::DeviceMemory::DeviceMemory

(

)

Empty constructor.

Definition at line 46 of file device_memory.cpp.

~DeviceMemory()

kfusion::cuda::DeviceMemory::~DeviceMemory

(

)

Destructor.

Definition at line 49 of file device_memory.cpp.

DeviceMemory() [2/4]

kfusion::cuda::DeviceMemory::DeviceMemory

(

size_t

sizeBytes_arg

)

Allocates internal buffer in GPU memory.

Parameters

sizeBytes_arg

amount of memory to allocate

Definition at line 48 of file device_memory.cpp.

DeviceMemory() [3/4]

kfusion::cuda::DeviceMemory::DeviceMemory	(	void *	ptr_arg,
		size_t	sizeBytes_arg
	)

Initializes with user allocated buffer. Reference counting is disabled in this case.

Parameters

ptr_arg	pointer to buffer
sizeBytes_arg	buffer size

Definition at line 47 of file device_memory.cpp.

DeviceMemory() [4/4]

kfusion::cuda::DeviceMemory::DeviceMemory

(

const DeviceMemory &

other_arg

)

Copy constructor. Just increments reference counter.

Definition at line 51 of file device_memory.cpp.

Member Function Documentation

copyTo()

void kfusion::cuda::DeviceMemory::copyTo

(

DeviceMemory &

other

)

const

Performs data copying. If destination size differs it will be reallocated.

Parameters

other_arg

destination container

Definition at line 93 of file device_memory.cpp.

create()

void kfusion::cuda::DeviceMemory::create

(

size_t

sizeBytes_arg

)

Allocates internal buffer in GPU memory. If internal buffer was created before the function recreates it with new size. If new and old sizes are equal it does nothing.

Parameters

sizeBytes_arg

buffer size

Definition at line 73 of file device_memory.cpp.

download()

void kfusion::cuda::DeviceMemory::download

(

void *

host_ptr_arg

)

const

Downloads data from internal buffer to CPU memory.

Parameters

host_ptr_arg

pointer to buffer to download

Definition at line 125 of file device_memory.cpp.

empty()

bool kfusion::cuda::DeviceMemory::empty

(

)

const

Returns true if unallocated otherwise false.

Definition at line 138 of file device_memory.cpp.

operator PtrSz< U >()

template<class U >

kfusion::cuda::DeviceMemory::operator PtrSz< U >

(

)

const

Conversion to PtrSz for passing to kernel functions.

operator=()

kfusion::cuda::DeviceMemory & kfusion::cuda::DeviceMemory::operator=

(

const DeviceMemory &

other_arg

)

Assigment operator. Just increments reference counter.

Definition at line 58 of file device_memory.cpp.

ptr() [1/2]

template<class T >

T * kfusion::cuda::DeviceMemory::ptr ( )

inline

Returns pointer for internal buffer in GPU memory.

Definition at line 226 of file device_memory.hpp.

ptr() [2/2]

template<class T >

const T * kfusion::cuda::DeviceMemory::ptr ( ) const

inline

Returns constant pointer for internal buffer in GPU memory.

Definition at line 227 of file device_memory.hpp.

release()

void kfusion::cuda::DeviceMemory::release

(

)

Decrements reference counter and releases internal buffer if needed.

Definition at line 105 of file device_memory.cpp.

sizeBytes()

size_t kfusion::cuda::DeviceMemory::sizeBytes

(

)

const

Definition at line 139 of file device_memory.cpp.

swap()

void kfusion::cuda::DeviceMemory::swap

(

DeviceMemory &

other_arg

)

Performs swap of data pointed with another device memory.

Parameters

other

device memory to swap with

Definition at line 131 of file device_memory.cpp.

upload()

void kfusion::cuda::DeviceMemory::upload	(	const void *	host_ptr_arg,
		size_t	sizeBytes_arg
	)

Uploads data to internal buffer in GPU memory. It calls create() inside to ensure that intenal buffer size is enough.

Parameters

host_ptr_arg	pointer to buffer to upload
sizeBytes_arg	buffer size

Definition at line 118 of file device_memory.cpp.

Member Data Documentation

data_

void* kfusion::cuda::DeviceMemory::data_

private

Device pointer.

Definition at line 92 of file device_memory.hpp.

refcount_

int* kfusion::cuda::DeviceMemory::refcount_

private

Pointer to reference counter in CPU memory.

Definition at line 98 of file device_memory.hpp.

sizeBytes_

size_t kfusion::cuda::DeviceMemory::sizeBytes_

private

Allocated size in bytes.

Definition at line 95 of file device_memory.hpp.

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

• device_memory.hpp
• device_memory.cpp