DcmTempFileHandler Class Reference

class that manages the life cycle of a temporary file. More...

List of all members.

Public Member Functions
DcmInputStream *	create () const
	create an input stream that permits reading from the temporary file
void	increaseRefCount ()
	increase reference counter for this object
void	decreaseRefCount ()
	decreases reference counter for this object and deletes the temporary file and this object if the reference counter becomes zero.
Static Public Member Functions
static DcmTempFileHandler *	newInstance (const OFFilename &filename)
	static method that permits creation of instances of this class (only) on the heap, never on the stack.
Private Member Functions
	DcmTempFileHandler (const OFFilename &filename)
	private constructor.
virtual	~DcmTempFileHandler ()
	private destructor.
	DcmTempFileHandler (const DcmTempFileHandler &arg)
	private undefined copy constructor
DcmTempFileHandler &	operator= (const DcmTempFileHandler &arg)
	private undefined copy assignment operator
Private Attributes
size_t	refCount_
	number of references to temporary file.
OFFilename	filename_
	path to temporary file

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Detailed Description

class that manages the life cycle of a temporary file.

It maintains a thread-safe reference counter, and when this counter is decreased to zero, unlinks (deletes) the file and then the handler object itself.

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Constructor & Destructor Documentation

DcmTempFileHandler::DcmTempFileHandler

(

const OFFilename &

filename

)

[private]

private constructor.

Instances of this class are always created through newInstance().

Parameters:

filename

path to temporary file (may contain wide chars if support enabled)

virtual DcmTempFileHandler::~DcmTempFileHandler

(

)

[private, virtual]

private destructor.

Instances of this class are always deleted through the reference counting methods

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Member Function Documentation

DcmInputStream* DcmTempFileHandler::create

(

)

const

create an input stream that permits reading from the temporary file

Returns:

pointer to input stream. Note that there is no guarantee that the input stream actually permits reading, i.e. the presence of the temporary file is not checked.

static DcmTempFileHandler* DcmTempFileHandler::newInstance

(

const OFFilename &

filename

)

[static]

static method that permits creation of instances of this class (only) on the heap, never on the stack.

A newly created instance always has a reference counter of 1.

Parameters:

filename

path to temporary file (may contain wide chars if support enabled)

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Member Data Documentation

size_t DcmTempFileHandler::refCount_ [private]

number of references to temporary file.

Default initialized to 1 upon construction of this object

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

• dcmdata/include/dcmtk/dcmdata/dcistrmf.h