skepu::DeviceMemPointer_CL< T > Class Template Reference

A class representing an OpenCL device memory allocation. More...

#include <device_mem_pointer_cl.h>

Public Member Functions
	DeviceMemPointer_CL (T *start, int numElements, Device_CL *device)
	~DeviceMemPointer_CL ()
void	copyHostToDevice (int numElements=-1, bool copyLast=false) const
void	copyDeviceToHost (int numElements=-1, bool copyLast=false) const
void	copyDeviceToDevice (cl_mem copyToPointer, int numElements, int dstOffset=0, int srcOffset=0) const
cl_mem	getDeviceDataPointer () const
void	changeDeviceData ()

Detailed Description

template<typename T>
class skepu::DeviceMemPointer_CL< T >

A class representing an OpenCL device memory allocation.

This class represents an OpenCL device memory allocation and controls the data transfers between host and device. Used rarely in this translation as data management is mostly done by StarPU.

Constructor & Destructor Documentation

template<typename T >

skepu::DeviceMemPointer_CL< T >::DeviceMemPointer_CL	(	T *	start,
		int	numElements,
		Device_CL *	device
	)

The constructor allocates a certain amount of space in device memory and stores a pointer to some data in host memory.

Parameters

start	Pointer to data in host memory.
numElements	Number of elements to allocate memory for.
device	Pointer to a valid device to allocate the space on.

References skepu::Device_CL::getContext(), and skepu::Device_CL::getQueue().

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template<typename T >

skepu::DeviceMemPointer_CL< T >::~DeviceMemPointer_CL

(

)

The destructor releases the allocated device memory.

Member Function Documentation

template<typename T >

void skepu::DeviceMemPointer_CL< T >::changeDeviceData

(

)

Marks the device data as changed.

template<typename T >

void skepu::DeviceMemPointer_CL< T >::copyDeviceToDevice	(	cl_mem	copyToPointer,
		int	numElements,
		int	dstOffset = 0,
		int	srcOffset = 0
	)		const

Copies data between device memory. Used internally.

Parameters

copyToPointer	the pointer from where to copy
numElements	Number of elements to copy, default value -1 = all elements.
dstOffset	Offset in the destination pointer.
srcOffset	Offset in the source pointer.

template<typename T >

void skepu::DeviceMemPointer_CL< T >::copyDeviceToHost	(	int	numElements = -1,
		bool	copyLast = false
	)		const

Copies data from device memory to host memory. Only copies if data on device has been marked as changed.

Parameters

numElements	Number of elements to copy, default value -1 = all elements.
copyLast	Specify whether should copy only the last allocated data.

template<typename T >

void skepu::DeviceMemPointer_CL< T >::copyHostToDevice	(	int	numElements = -1,
		bool	copyLast = false
	)		const

Copies data from host memory to device memory.

Parameters

numElements	Number of elements to copy, default value -1 = all elements.
copyLast	Specify whether should copy only the last allocated data.

template<typename T >

cl_mem skepu::DeviceMemPointer_CL< T >::getDeviceDataPointer

(

)

const

Returns

OpenCL memory object representing data on the device.

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

• include_starpu/skepu/src/device_mem_pointer_cl.h