MMappedBlocks Class Reference

#include <IIOMMap.H>

Collaboration diagram for MMappedBlocks:

Public Member Functions
	MMappedBlocks ()
	~MMappedBlocks ()
	Destructor. More...
int	reset (int fdIn)
int	reset (int fdIn, int count, int size)

Public Attributes
vector< struct block >	blocks
	The block information and address. More...

Private Member Functions
int	allocate ()
void	deAllocate ()
int	memoryMap ()
void	memoryUnmap ()

Private Attributes
int	fd
	The file descriptior of the device. More...
struct iio_buffer_block_alloc_req	req

Detailed Description

Memory map multiple blocks for the IIO read subsystem.

Definition at line 65 of file IIOMMap.H.

Constructor & Destructor Documentation

MMappedBlocks()

MMappedBlocks::MMappedBlocks ( )

inline

Constructor.

Definition at line 135 of file IIOMMap.H.

~MMappedBlocks()

MMappedBlocks::~MMappedBlocks ( )

inline

Destructor.

Definition at line 142 of file IIOMMap.H.

Member Function Documentation

allocate()

int MMappedBlocks::allocate ( )

inlineprivate

Method to get the kernel to allocate memory blocks.

Returns

Returns <0 on error.

Definition at line 72 of file IIOMMap.H.

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deAllocate()

void MMappedBlocks::deAllocate ( )

inlineprivate

Deallocate kernel space memory.

Definition at line 84 of file IIOMMap.H.

memoryMap()

int MMappedBlocks::memoryMap ( )

inlineprivate

Memory map the blocks to the device.

Returns

Returns !=0 on error.

Definition at line 92 of file IIOMMap.H.

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memoryUnmap()

void MMappedBlocks::memoryUnmap ( )

inlineprivate

unmap memory blocks.

Definition at line 124 of file IIOMMap.H.

reset() [1/2]

int MMappedBlocks::reset ( int  fdIn )

inline

Setup the mmap blocks. Uses DEFAULT_BLOCK_COUNT and DEFAULT_BLOCK_SIZE for the count and size respectively.

Parameters

fdIn	The open file descriptor of the IIO device to be read from.

Returns

NO_ERROR or appropriate error

Definition at line 151 of file IIOMMap.H.

reset() [2/2]

int MMappedBlocks::reset ( int  fdIn, int  count, int  size  )

inline

Setup the mmap blocks

Parameters

fdIn	The open file descriptor of the IIO device to be read from.
count	The number of blocks to use.
size	The size of each block (in bytes).

Returns

NO_ERROR or appropriate error

Definition at line 161 of file IIOMMap.H.

Member Data Documentation

blocks

vector<struct block> MMappedBlocks::blocks

The block information and address.

Definition at line 131 of file IIOMMap.H.

fd

int MMappedBlocks::fd

private

The file descriptior of the device.

Definition at line 66 of file IIOMMap.H.

req

struct iio_buffer_block_alloc_req MMappedBlocks::req

private

Definition at line 67 of file IIOMMap.H.

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

• /tmp/gtkiostream/include/IIO/IIOMMap.H