DcmTempFileHandler Class Reference

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

Public Member Functions
DcmInputStream *	create () const
	create an input stream that permits reading from the temporary file More...
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. More...

Private Member Functions
	DcmTempFileHandler (const OFFilename &filename)
	private constructor. More...
virtual	~DcmTempFileHandler ()
	private destructor. More...
	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. More...
OFMutex	mutex_
	mutex for MT-safe reference counting More...
OFFilename	filename_
	path to temporary file

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.

Constructor & Destructor Documentation

DcmTempFileHandler()

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)

~DcmTempFileHandler()

virtual DcmTempFileHandler::~DcmTempFileHandler ( )

privatevirtual

private destructor.

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

Member Function Documentation

create()

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.

newInstance()

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)

Member Data Documentation

mutex_

OFMutex DcmTempFileHandler::mutex_

private

mutex for MT-safe reference counting

Remarks

this member is only available if DCMTK is compiled with thread support enabled.

refCount_

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