This class defines a thread-safe dictionary of objects. More...

#include <safecoll.h>

Inheritance diagram for PSafeDictionaryBase< Coll, Key, Base >:

Collaboration diagram for PSafeDictionaryBase< Coll, Key, Base >:

Public Member Functions
Construction
	PSafeDictionaryBase ()
	Create a safe dictionary wrapper around the real collection. More...

	PSafeDictionaryBase (const PSafeDictionaryBase &other)
	Copy constructor for safe collection. More...

PSafeDictionaryBase &	operator= (const PSafeDictionaryBase &other)
	Assign one safe collection to another. More...

Operations
virtual void	SetAt (const Key &key, Base *obj)
	Add an object to the collection. More...

virtual PBoolean	RemoveAt (const Key &key)
	Remove an object to the collection. More...

virtual PBoolean	Contains (const Key &key)
	Determine of the dictionary contains an entry for the key. More...

virtual PSafePtr< Base >	GetAt (PINDEX idx, PSafetyMode mode=PSafeReadWrite)
	Get the instance in the collection of the index. More...

virtual PSafePtr< Base >	FindWithLock (const Key &key, PSafetyMode mode=PSafeReadWrite) const
	Find the instance in the collection of an object with the same value. More...

virtual bool	Move (const Key &from, const Key &to)
	Move an object from one key location to another. More...

PArray< Key >	GetKeys () const
	Get an array containing all the keys for the dictionary. More...

Public Member Functions inherited from PSafeCollection
	PSafeCollection (PCollection *collection)
	Create a thread safe collection of objects. More...

	~PSafeCollection ()
	Destroy the thread safe collection. More...

virtual void	PrintOn (ostream &strm) const
	Output the contents of the object to the stream. More...

virtual void	RemoveAll (PBoolean synchronous=false)
	Remove all objects in collection. More...

void	AllowDeleteObjects (PBoolean yes=true)
	Disallow the automatic delete any objects that have been removed. More...

void	DisallowDeleteObjects ()
	Disallow the automatic delete any objects that have been removed. More...

virtual PBoolean	DeleteObjectsToBeRemoved ()
	Delete any objects that have been removed. More...

virtual void	DeleteObject (PObject *object) const
	Delete an objects that has been removed. More...

virtual void	SetAutoDeleteObjects ()
	Start a timer to automatically call DeleteObjectsToBeRemoved(). More...

PINDEX	GetSize () const
	Get the current size of the collection. More...

PBoolean	IsEmpty () const
	Determine if the collection is empty. More...

const PMutex &	GetMutex () const
	Get the mutex for the collection. More...

PMutex &	GetMutex ()

Public Member Functions inherited from PObject
unsigned	GetTraceContextIdentifier () const
	Get PTRACE context identifier. More...

void	SetTraceContextIdentifier (unsigned id)

void	GetTraceContextIdentifier (PObject &obj)

void	GetTraceContextIdentifier (PObject *obj)

void	SetTraceContextIdentifier (const PObject &obj)

void	SetTraceContextIdentifier (const PObject *obj)

virtual	~PObject ()

virtual PObject *	Clone () const
	Create a copy of the class on the heap. More...

template<class CLS >
CLS *	CloneAs () const
	As for Clone() but converts to specified type. More...

virtual PINDEX	HashFunction () const
	This function yields a hash value required by the `PDictionary` class. More...

virtual const char *	GetClass (unsigned ancestor=0) const
	Get the current dynamic type of the object instance. More...

PBoolean	IsClass (const char *cls) const

virtual PBoolean	InternalIsDescendant (const char *clsName) const
	Determine if the dynamic type of the current instance is a descendent of the specified class. More...

__inline const PObject *	PTraceObjectInstance () const

virtual Comparison	Compare (const PObject &obj) const
	Compare the two objects and return their relative rank. More...

virtual Comparison	CompareObjectMemoryDirect (const PObject &obj) const
	Determine the byte wise comparison of two objects. More...

bool	operator== (const PObject &obj) const
	Compare the two objects. More...

bool	operator!= (const PObject &obj) const
	Compare the two objects. More...

bool	operator< (const PObject &obj) const
	Compare the two objects. More...

bool	operator> (const PObject &obj) const
	Compare the two objects. More...

bool	operator<= (const PObject &obj) const
	Compare the two objects. More...

bool	operator>= (const PObject &obj) const
	Compare the two objects. More...

virtual void	ReadFrom (istream &strm)
	Input the contents of the object from the stream. More...

Additional Inherited Members
Public Types inherited from PObject
enum	Comparison { LessThan = -1, EqualTo = 0, GreaterThan = 1 }
	Result of the comparison operation performed by the `Compare()` function. More...

Static Public Member Functions inherited from PObject
static const char *	Class ()
	Get the name of the class as a C string. More...

static __inline const PObject *	PTraceObjectInstance (const char *)

static __inline const PObject *	PTraceObjectInstance (const PObject *obj)

static Comparison	InternalCompareObjectMemoryDirect (const PObject obj1, const PObject obj2, PINDEX size)
	Internal function caled from CompareObjectMemoryDirect() More...

Protected Member Functions inherited from PSafeCollection
void	CopySafeCollection (PCollection *other)

void	CopySafeDictionary (PAbstractDictionary *other)

bool	SafeAddObject (PSafeObject obj, PSafeObject old)

void	SafeRemoveObject (PSafeObject *obj)

	PDECLARE_NOTIFIER (PTimer, PSafeCollection, DeleteObjectsTimeout)

virtual PBoolean	SafeRemove (PSafeObject *obj)
	Remove an object to the collection. More...

virtual PBoolean	SafeRemoveAt (PINDEX idx)
	Remove an object to the collection. More...

Protected Attributes inherited from PSafeCollection
PCollection *	collection

PMutex	collectionMutex

bool	deleteObjects

PList< PSafeObject >	toBeRemoved

PMutex	removalMutex

PTimer *	m_deleteObjectsTimer

Friends inherited from PObject

Detailed Description

template<class Coll, class Key, class Base>
class PSafeDictionaryBase< Coll, Key, Base >

This class defines a thread-safe dictionary of objects.

This is part of a set of classes to solve the general problem of a collection (eg a PList or PDictionary) of objects that needs to be a made thread safe. Any thread can add, read, write or remove an object with both the object and the database of objects itself kept thread safe.

See the PSafeObject class for more details. Especially in regard to enumeration of collections.

Constructor & Destructor Documentation

template<class Coll, class Key, class Base>

PSafeDictionaryBase< Coll, Key, Base >::PSafeDictionaryBase ( )

inline

Create a safe dictionary wrapper around the real collection.

template<class Coll, class Key, class Base>

PSafeDictionaryBase< Coll, Key, Base >::PSafeDictionaryBase ( const PSafeDictionaryBase< Coll, Key, Base > & other )

inline

Copy constructor for safe collection.

Note the left hand side will always have DisallowDeleteObjects() set.

Member Function Documentation

template<class Coll, class Key, class Base>

virtual PBoolean PSafeDictionaryBase< Coll, Key, Base >::Contains ( const Key & key )

inlinevirtual

Determine of the dictionary contains an entry for the key.

template<class Coll, class Key, class Base>

virtual PSafePtr<Base> PSafeDictionaryBase< Coll, Key, Base >::FindWithLock	(	const Key &	key,
		PSafetyMode	mode = `PSafeReadWrite`
	)		const

inlinevirtual

Find the instance in the collection of an object with the same value.

The returned safe pointer will increment the reference count on the PSafeObject and lock to the object in the mode specified. The lock will remain until the PSafePtr goes out of scope.

Referenced by PSafeDictionary< K, D >::iterator_base::SetPosition().

template<class Coll, class Key, class Base>

virtual PSafePtr<Base> PSafeDictionaryBase< Coll, Key, Base >::GetAt	(	PINDEX	idx,
		PSafetyMode	mode = `PSafeReadWrite`
	)

inlinevirtual

Get the instance in the collection of the index.

The returned safe pointer will increment the reference count on the PSafeObject and lock to the object in the mode specified. The lock will remain until the PSafePtr goes out of scope.

template<class Coll, class Key, class Base>

PArray<Key> PSafeDictionaryBase< Coll, Key, Base >::GetKeys ( ) const

inline

Get an array containing all the keys for the dictionary.

template<class Coll, class Key, class Base>

virtual bool PSafeDictionaryBase< Coll, Key, Base >::Move	(	const Key &	from,
		const Key &	to
	)

inlinevirtual

Move an object from one key location to another.

Parameters

from	Key to find object to move
to	Key to place found object

template<class Coll, class Key, class Base>

PSafeDictionaryBase& PSafeDictionaryBase< Coll, Key, Base >::operator= ( const PSafeDictionaryBase< Coll, Key, Base > & other )

inline

Assign one safe collection to another.

Note the left hand side will always have DisallowDeleteObjects() set.

template<class Coll, class Key, class Base>

virtual PBoolean PSafeDictionaryBase< Coll, Key, Base >::RemoveAt ( const Key & key )

inlinevirtual

Remove an object to the collection.

This function removes the object from the collection itself, but does not actually delete the object. It simply moves the object to a list of objects to be garbage collected at a later time.

As for Append() full mutual exclusion locking on the collection itself is maintained.

Parameters

key	Key to find object to delete

template<class Coll, class Key, class Base>

virtual void PSafeDictionaryBase< Coll, Key, Base >::SetAt	(	const Key &	key,
		Base *	obj
	)

inlinevirtual

Add an object to the collection.

This uses the PCollection::Append() function to add the object to the collection, with full mutual exclusion locking on the collection.

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

safecoll.h

Public Member Functions

Additional Inherited Members

Detailed Description

template<class Coll, class Key, class Base> class PSafeDictionaryBase< Coll, Key, Base >

Constructor & Destructor Documentation

Member Function Documentation

template<class Coll, class Key, class Base>
class PSafeDictionaryBase< Coll, Key, Base >