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HxDataObjectManager Class Reference

This class is responsible for server memory management: limit the amout of memory used by servants, or limit the number of servants in the server. More...

#include <HxDataObjectManager.h>

Inheritance diagram for HxDataObjectManager::

List of all members.

Public Methods
virtual	~HxDataObjectManager ()
virtual void	objectCreated (const PortableServer::ObjectId &oid)=0
	Called when an object is created. More...
virtual void	objectAccessed (const PortableServer::ObjectId &oid)=0
	Called before an operation is called in an object. More...
virtual void	objectUsed (const PortableServer::ObjectId &oid)=0
	Called after an operation has been called in an object. More...
virtual void	objectDeleted (const PortableServer::ObjectId &oid)=0
	Called when an object is deleted. More...
virtual void	setTotalLimit (HxString unit, int value)=0
	Set limit on given unit. More...
virtual int	getTotalLimit (HxString unit)=0
virtual void	setObjectLimit (HxString unit, int value)=0
	Set limit (per object) on given unit. More...
virtual int	getObjectLimit (HxString unit)=0
virtual int	getUsed (HxString unit)=0
virtual void	getUnitList (HxStringListBackInserter slPtr)=0
	List unit names that this manager can handle. More...
Static Public Methods
void	init (const char *poaName)
	Call this function before ORB_init to initialize all the DataObjectManager mechanism. More...
HxDataObjectManager *	getDefault ()
	Get default HxDataObjectManager. More...
HxDataObjectManager *	get (const char *name)
	Get manager for given object type. More...
void	getNameList (HxStringListBackInserter slPtr)
	Get list of types that have a specific HxDataObjectManager. More...
Static Protected Methods
void	put (HxDataObjectManager *mgr, const char *name)

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Detailed Description

This class is responsible for server memory management: limit the amout of memory used by servants, or limit the number of servants in the server.

Each time an object is created, accessed or deleted, the manager responsible for that type of objects is called. When the number of existing objects exceeds the specified limit, the manager removes some objects in order to stay within the limits. Least recently used objects are removed first.

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Constructor & Destructor Documentation

HxDataObjectManager::~HxDataObjectManager (    )  [virtual]

{ }

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Member Function Documentation

void HxDataObjectManager::init (  const char *    poaName )  [static]

Call this function before ORB_init to initialize all the DataObjectManager mechanism. { // Register the interceptor (through an ORB initializer) that will // call the DataObjectManagers PortableInterceptor::ORBInitializer_var initializer = new HxDataObjectInitializer(new HxDataObjectInterceptor(poaName)); PortableInterceptor::register_orb_initializer(initializer); // Instantiate managers for specific types: static HxImageRepManager imageMgr; }

HxDataObjectManager * HxDataObjectManager::getDefault (    )  [static]

Get default HxDataObjectManager. { return _default; }

HxDataObjectManager * HxDataObjectManager::get (  const char *    name )  [static]

Get manager for given object type. { Map::const_iterator ptr; ptr = _map.find(HxString(name)); if(ptr == _map.end()) return _default; return ptr->second; }

void HxDataObjectManager::getNameList (  HxStringListBackInserter    slPtr )  [static]

Get list of types that have a specific HxDataObjectManager. { Map::const_iterator ptr; for(ptr = _map.begin(); ptr != _map.end(); ptr++) *slPtr++ = ptr->first; }

virtual void HxDataObjectManager::objectCreated (  const PortableServer::ObjectId &    oid )  [pure virtual]

Called when an object is created. Reimplemented in HxDefaultDataObjectManager.

virtual void HxDataObjectManager::objectAccessed (  const PortableServer::ObjectId &    oid )  [pure virtual]

Called before an operation is called in an object. (Manager marks object as used) Reimplemented in HxDefaultDataObjectManager.

virtual void HxDataObjectManager::objectUsed (  const PortableServer::ObjectId &    oid )  [pure virtual]

Called after an operation has been called in an object. (Check if object has grown). Reimplemented in HxDefaultDataObjectManager.

virtual void HxDataObjectManager::objectDeleted (  const PortableServer::ObjectId &    oid )  [pure virtual]

Called when an object is deleted. Reimplemented in HxDefaultDataObjectManager.

virtual void HxDataObjectManager::setTotalLimit (  HxString    unit, int    value )  [pure virtual]

Set limit on given unit. All objects together don't have to exceed that limit. Reimplemented in HxDefaultDataObjectManager, and HxImageRepManager.

virtual int HxDataObjectManager::getTotalLimit (  HxString    unit )  [pure virtual]

Reimplemented in HxDefaultDataObjectManager, and HxImageRepManager.

virtual void HxDataObjectManager::setObjectLimit (  HxString    unit, int    value )  [pure virtual]

Set limit (per object) on given unit. Any object can exceed that limit. Reimplemented in HxDefaultDataObjectManager, and HxImageRepManager.

virtual int HxDataObjectManager::getObjectLimit (  HxString    unit )  [pure virtual]

Reimplemented in HxDefaultDataObjectManager, and HxImageRepManager.

virtual int HxDataObjectManager::getUsed (  HxString    unit )  [pure virtual]

Reimplemented in HxDefaultDataObjectManager, and HxImageRepManager.

virtual void HxDataObjectManager::getUnitList (  HxStringListBackInserter    slPtr )  [pure virtual]

List unit names that this manager can handle. Reimplemented in HxDefaultDataObjectManager, and HxImageRepManager.

void HxDataObjectManager::put (  HxDataObjectManager *    mgr, const char *    name )  [static, protected]

{ _map[HxString(name)] = mgr; }

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

• HxDataObjectManager.h
• HxDataObjectManager.c

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