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DeviceMemory class More...

#include </__w/1/s/gpu/containers/include/pcl/gpu/containers/device_memory.h>

Public Member Functions

DeviceMemory ()
Empty constructor. More...
~DeviceMemory ()
Destructor. More...
DeviceMemory (std::size_t sizeBytes_arg)
Allocates internal buffer in GPU memory. More...
DeviceMemory (void *ptr_arg, std::size_t sizeBytes_arg)
Initializes with user allocated buffer. More...
DeviceMemory (const DeviceMemory &other_arg)
Copy constructor. More...
DeviceMemory & operator= (const DeviceMemory &other_arg)
Assignment operator. More...
void create (std::size_t sizeBytes_arg)
Allocates internal buffer in GPU memory. More...
void release ()
Decrements reference counter and releases internal buffer if needed. More...
void copyTo (DeviceMemory &other) const
Performs data copying. More...
void upload (const void *host_ptr_arg, std::size_t sizeBytes_arg)
Uploads data to internal buffer in GPU memory. More...
bool upload (const void *host_ptr_arg, std::size_t device_begin_byte_offset, std::size_t num_bytes)
Uploads data from CPU memory to device array. More...
void download (void *host_ptr_arg) const
Downloads data from internal buffer to CPU memory. More...
bool download (void *host_ptr_arg, std::size_t device_begin_byte_offset, std::size_t num_bytes) const
Downloads data from internal buffer to CPU memory. More...
void swap (DeviceMemory &other_arg)
Performs swap of data pointed with another device memory. 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...
template<class U >
operator PtrSz< U > () const
Conversion to PtrSz for passing to kernel functions. More...
bool empty () const
Returns true if unallocated otherwise false. More...
std::size_t sizeBytes () const

Detailed Description

DeviceMemory class

Note
This is a BLOB container class with reference counting for GPU memory.
Author
Anatoly Baksheev

Definition at line 54 of file device_memory.h.

Constructor & Destructor Documentation

DeviceMemory() [1/4]

pcl::gpu::DeviceMemory::DeviceMemory ( )

Empty constructor.

~DeviceMemory()

pcl::gpu::DeviceMemory::~DeviceMemory ( )

Destructor.

DeviceMemory() [2/4]

pcl::gpu::DeviceMemory::DeviceMemory ( std::size_t sizeBytes_arg )

Allocates internal buffer in GPU memory.

Parameters
sizeBytes_arg amount of memory to allocate

DeviceMemory() [3/4]

pcl::gpu::DeviceMemory::DeviceMemory ( void * ptr_arg,
std::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

DeviceMemory() [4/4]

pcl::gpu::DeviceMemory::DeviceMemory ( const DeviceMemory & other_arg )

Copy constructor.

Just increments reference counter.

Member Function Documentation

copyTo()

void pcl::gpu::DeviceMemory::copyTo ( DeviceMemory & other ) const

Performs data copying.

If destination size differs it will be reallocated.

Parameters
other destination container

create()

void pcl::gpu::DeviceMemory::create ( std::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

download() [1/2]

void pcl::gpu::DeviceMemory::download ( void * host_ptr_arg ) const

Downloads data from internal buffer to CPU memory.

Parameters
host_ptr_arg pointer to buffer to download

download() [2/2]

bool pcl::gpu::DeviceMemory::download ( void * host_ptr_arg,
std::size_t device_begin_byte_offset,
std::size_t num_bytes
) const

Downloads data from internal buffer to CPU memory.

Returns
true if download successful
Parameters
host_ptr_arg pointer to buffer to download
device_begin_byte_offset first byte position to download
num_bytes number of bytes to download

empty()

bool pcl::gpu::DeviceMemory::empty ( ) const

Returns true if unallocated otherwise false.

Referenced by pcl::gpu::kinfuLS::StandaloneMarchingCubes< PointT >::convertTrianglesToMesh().

operator PtrSz< U >()

template<class U >
pcl::gpu::DeviceMemory::operator PtrSz< U >
inline

Conversion to PtrSz for passing to kernel functions.

Definition at line 60 of file device_memory.hpp.

References pcl::gpu::DevPtr< T >::data, and pcl::gpu::PtrSz< T >::size.

operator=()

DeviceMemory& pcl::gpu::DeviceMemory::operator= ( const DeviceMemory & other_arg )

Assignment operator.

Just increments reference counter.

ptr() [1/2]

template<class T >
T * pcl::gpu::DeviceMemory::ptr
inline

Returns pointer for internal buffer in GPU memory.

Definition at line 47 of file device_memory.hpp.

ptr() [2/2]

template<class T >
const T * pcl::gpu::DeviceMemory::ptr
inline

Returns constant pointer for internal buffer in GPU memory.

Definition at line 54 of file device_memory.hpp.

release()

void pcl::gpu::DeviceMemory::release ( )

Decrements reference counter and releases internal buffer if needed.

sizeBytes()

std::size_t pcl::gpu::DeviceMemory::sizeBytes ( ) const

Referenced by pcl::gpu::AsyncCopy< T >::download(), and pcl::gpu::TextureBinder::TextureBinder().

swap()

void pcl::gpu::DeviceMemory::swap ( DeviceMemory & other_arg )

Performs swap of data pointed with another device memory.

Parameters
other_arg device memory to swap with

upload() [1/2]

bool pcl::gpu::DeviceMemory::upload ( const void * host_ptr_arg,
std::size_t device_begin_byte_offset,
std::size_t num_bytes
)

Uploads data from CPU memory to device array.

Note
This overload never allocates memory in contrast to the other upload function.
Returns
true if upload successful
Parameters
host_ptr_arg pointer to buffer to upload
device_begin_byte_offset first byte position to upload to
num_bytes number of bytes to upload

upload() [2/2]

void pcl::gpu::DeviceMemory::upload ( const void * host_ptr_arg,
std::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
The documentation for this class was generated from the following files:

© 2009–2012, Willow Garage, Inc.
© 2012–, Open Perception, Inc.
Licensed under the BSD License.
https://pointclouds.org/documentation/classpcl_1_1gpu_1_1_device_memory.html