GlobalDcmDataDictionary Class Reference

encapsulates a data dictionary with access methods which allow safe read and write access from multiple threads in parallel. More...

List of all members.

Public Member Functions
	GlobalDcmDataDictionary ()
	constructor.
	~GlobalDcmDataDictionary ()
	destructor
const DcmDataDictionary &	rdlock ()
	acquires a read lock and returns a const reference to the dictionary.
DcmDataDictionary &	wrlock ()
	acquires a write lock and returns a non-const reference to the dictionary.
void	unlock ()
	unlocks the read or write lock which must have been acquired previously.
OFBool	isDictionaryLoaded ()
	checks if a data dictionary has been loaded.
void	clear ()
	erases the contents of the dictionary.
Private Member Functions
GlobalDcmDataDictionary &	operator= (const GlobalDcmDataDictionary &)
	private undefined assignment operator
	GlobalDcmDataDictionary (const GlobalDcmDataDictionary &)
	private undefined copy constructor
void	createDataDict ()
	create the data dictionary instance for this class.
Private Attributes
DcmDataDictionary *	dataDict
	the data dictionary managed by this class

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Detailed Description

encapsulates a data dictionary with access methods which allow safe read and write access from multiple threads in parallel.

A read/write lock is used to protect threads from each other. This allows parallel read-only access by multiple threads, which is the most common case.

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Member Function Documentation

void GlobalDcmDataDictionary::clear

(

)

erases the contents of the dictionary.

This method acquires and releases a write lock. It must not be called with another lock on the dictionary being held by the calling thread. This method is intended as a help for debugging memory leaks.

void GlobalDcmDataDictionary::createDataDict

(

)

[private]

create the data dictionary instance for this class.

The caller must not have dataDictLock locked.

OFBool GlobalDcmDataDictionary::isDictionaryLoaded

(

)

checks if a data dictionary has been loaded.

This method acquires and releases a read lock. It must not be called with another lock on the dictionary being held by the calling thread.

Returns:

OFTrue if dictionary has been loaded, OFFalse otherwise.

const DcmDataDictionary& GlobalDcmDataDictionary::rdlock

(

)

acquires a read lock and returns a const reference to the dictionary.

Returns:

const reference to dictionary

DcmDataDictionary& GlobalDcmDataDictionary::wrlock

(

)

acquires a write lock and returns a non-const reference to the dictionary.

Returns:

non-const reference to dictionary.

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

• dcmdata/include/dcmtk/dcmdata/dcdict.h