Intermediate class between Standard_Transient and descendants. The abstract class TShared is the root class of managed objects. TShared objects are managed by a memory manager based on reference counting. They have handle semantics. In other words, the reference counter is transparently incremented and decremented according to the scope of handles. When all handles, which reference a single object are out of scope, the reference counter becomes null and the object is automatically deleted. The deallocated memory is not given back to the system though. It is reclaimed for new objects of the same size. Warning This memory management scheme does not work for cyclic data structures. In such cases (with back pointers for example), you should interrupt the cycle in a class by using a full C++ pointer instead of a handle. More...
#include <MMgt_TShared.hxx>
Inherits Standard_Transient.
Inherited by Adaptor2d_HCurve2d, Adaptor3d_HCurve, Adaptor3d_HSurface, Adaptor3d_HVertex, Adaptor3d_TopolTool, AIS_GlobalStatus, AIS_LocalContext, AIS_LocalStatus, AppDef_SmoothCriterion, Approx_CurvlinFunc, Approx_SweepFunction, Aspect_Grid, Aspect_Window, BinMDF_ADriver, BinMDF_ADriverTable, BOPDS_CommonBlock, BOPDS_PaveBlock, BRep_CurveRepresentation, BRep_PointRepresentation, BRepAlgo_AsDes, BRepAlgo_EdgeConnector, BRepApprox_ApproxLine, BRepBlend_Line, BRepBuilderAPI_Sewing, BRepCheck_Result, BRepFill_LocationLaw, BRepFill_PipeShell, BRepFill_SectionLaw, BRepTools_Modification, BRepTools_ReShape, ChFiDS_Spine, ChFiDS_Stripe, ChFiDS_SurfData, Contap_TheIWLineOfTheIWalking, DBRep_Edge, DBRep_Face, DDataStd_DrawDriver, DDF_Transaction, Draw_Drawable3D, Expr_GeneralExpression, Expr_GeneralFunction, Expr_GeneralRelation, ExprIntrp_Generator, FEmTool_Curve, FEmTool_ElementaryCriterion, FEmTool_SparseMatrix, Font_FontMgr, Font_SystemFont, GccInt_Bisec, Geom2d_Geometry, Geom2d_Transformation, Geom_Geometry, Geom_OsculatingSurface, GeomFill_Boundary, GeomFill_CoonsAlgPatch, GeomFill_Line, GeomFill_LocationLaw, GeomFill_SectionLaw, GeomFill_TgtField, GeomFill_TrihedronLaw, GeomPlate_CurveConstraint, GeomPlate_PointConstraint, GeomTools_UndefinedTypeHandler, Graphic3d_ArrayOfPrimitives, Graphic3d_DataStructureManager, Graphic3d_GraphicDriver, Graphic3d_Group, Graphic3d_Structure, Graphic3d_StructureManager, HeaderSection_FileDescription, HeaderSection_FileName, HeaderSection_FileSchema, HLRAlgo_EdgesBlock, HLRAlgo_PolyAlgo, HLRAlgo_PolyData, HLRAlgo_PolyInternalData, HLRAlgo_PolyInternalNode, HLRAlgo_PolyShellData, HLRAlgo_WiresBlock, HLRBRep_AreaLimit, HLRBRep_Data, HLRBRep_InternalAlgo, HLRBRep_PolyAlgo, HLRTest_ShapeData, HLRTopoBRep_OutLiner, IFSelect_Activator, IFSelect_AppliedModifiers, IFSelect_Dispatch, IFSelect_EditForm, IFSelect_Editor, IFSelect_GeneralModifier, IFSelect_IntParam, IFSelect_ListEditor, IFSelect_ModelCopier, IFSelect_PacketList, IFSelect_Selection, IFSelect_SessionDumper, IFSelect_ShareOut, IFSelect_SignatureList, IFSelect_Transformer, IFSelect_WorkSession, IGESBasic_HArray1OfHArray1OfIGESEntity, IGESBasic_HArray1OfHArray1OfInteger, IGESBasic_HArray1OfHArray1OfReal, IGESBasic_HArray1OfHArray1OfXY, IGESBasic_HArray1OfHArray1OfXYZ, IGESData_IGESEntity, IGESData_NodeOfSpecificLib, IGESData_NodeOfWriterLib, IGESData_ToolLocation, IGESDefs_HArray1OfHArray1OfTextDisplayTemplate, IGESSelect_ViewSorter, IGESToBRep_AlgoContainer, IGESToBRep_IGESBoundary, IGESToBRep_ToolContainer, Interface_Check, Interface_CopyControl, Interface_EntityCluster, Interface_FileReaderData, Interface_GeneralModule, Interface_GTool, Interface_HGraph, Interface_InterfaceModel, Interface_IntVal, Interface_NodeOfGeneralLib, Interface_NodeOfReaderLib, Interface_ParamList, Interface_ParamSet, Interface_Protocol, Interface_ReaderModule, Interface_ReportEntity, Interface_UndefinedContent, IntPatch_Line, IntPatch_TheIWLineOfTheIWalking, IntStart_SITopolTool, IntSurf_LineOn2S, IntTools_Context, Law_BSpline, Law_Function, LDOM_MemManager, LocOpe_GeneratedShape, LocOpe_WiresOnShape, MAT2d_Circuit, MAT2d_Connexion, MAT_Arc, MAT_BasicElt, MAT_Bisector, MAT_Edge, MAT_Graph, MAT_ListOfBisector, MAT_ListOfEdge, MAT_Node, MAT_TListNodeOfListOfBisector, MAT_TListNodeOfListOfEdge, MAT_Zone, MeshVS_DataSource, MeshVS_Drawer, MeshVS_PrsBuilder, Message_Algorithm, Message_Messenger, Message_Printer, Message_ProgressIndicator, MoniTool_CaseData, MoniTool_Element, MoniTool_IntVal, MoniTool_RealVal, MoniTool_SignText, MoniTool_Timer, MoniTool_TypedValue, NCollection_BaseAllocator, NLPlate_HGPPConstraint, OpenGl_Window, PLib_Base, Poly_Polygon2D, Poly_Polygon3D, Poly_PolygonOnTriangulation, Poly_Triangulation, Prs3d_BasicAspect, Prs3d_Drawer, Prs3d_PlaneSet, Prs3d_Projector, PrsMgr_PresentableObject, PrsMgr_Presentation, PrsMgr_PresentationManager, QANewModTopOpe_ReShaper, Resource_Manager, SelectBasics_EntityOwner, SelectBasics_SensitiveEntity, SelectMgr_Filter, SelectMgr_Selection, SelectMgr_SelectionManager, SelectMgr_ViewerSelector, ShapeAlgo_AlgoContainer, ShapeAlgo_ToolContainer, ShapeAnalysis_FreeBoundData, ShapeAnalysis_Surface, ShapeAnalysis_TransferParameters, ShapeAnalysis_Wire, ShapeConstruct_ProjectCurveOnSurface, ShapeCustom_RestrictionParameters, ShapeExtend_BasicMsgRegistrator, ShapeExtend_WireData, ShapeFix_Edge, ShapeFix_EdgeProjAux, ShapeFix_Root, ShapeProcess_Context, ShapeProcess_Operator, ShapeUpgrade_RemoveLocations, ShapeUpgrade_SplitCurve, ShapeUpgrade_SplitSurface, ShapeUpgrade_Tool, ShapeUpgrade_UnifySameDomain, StepAP242_IdAttribute, StepAP242_ItemIdentifiedRepresentationUsage, StepBasic_Action, StepBasic_ActionAssignment, StepBasic_ActionMethod, StepBasic_ActionRequestAssignment, StepBasic_ActionRequestSolution, StepBasic_Address, StepBasic_ApplicationContext, StepBasic_ApplicationContextElement, StepBasic_ApplicationProtocolDefinition, StepBasic_Approval, StepBasic_ApprovalAssignment, StepBasic_ApprovalDateTime, StepBasic_ApprovalPersonOrganization, StepBasic_ApprovalRelationship, StepBasic_ApprovalRole, StepBasic_ApprovalStatus, StepBasic_Certification, StepBasic_CertificationAssignment, StepBasic_CertificationType, StepBasic_CharacterizedObject, StepBasic_Contract, StepBasic_ContractAssignment, StepBasic_ContractType, StepBasic_CoordinatedUniversalTimeOffset, StepBasic_Date, StepBasic_DateAndTime, StepBasic_DateAndTimeAssignment, StepBasic_DateAssignment, StepBasic_DateRole, StepBasic_DateTimeRole, StepBasic_DerivedUnit, StepBasic_DerivedUnitElement, StepBasic_DimensionalExponents, StepBasic_Document, StepBasic_DocumentProductAssociation, StepBasic_DocumentReference, StepBasic_DocumentRelationship, StepBasic_DocumentRepresentationType, StepBasic_DocumentType, StepBasic_DocumentUsageConstraint, StepBasic_Effectivity, StepBasic_EffectivityAssignment, StepBasic_EulerAngles, StepBasic_ExternallyDefinedItem, StepBasic_ExternalSource, StepBasic_GeneralProperty, StepBasic_Group, StepBasic_GroupAssignment, StepBasic_GroupRelationship, StepBasic_IdentificationAssignment, StepBasic_IdentificationRole, StepBasic_LocalTime, StepBasic_MeasureWithUnit, StepBasic_NameAssignment, StepBasic_NamedUnit, StepBasic_ObjectRole, StepBasic_Organization, StepBasic_OrganizationAssignment, StepBasic_OrganizationRole, StepBasic_Person, StepBasic_PersonAndOrganization, StepBasic_PersonAndOrganizationAssignment, StepBasic_PersonAndOrganizationRole, StepBasic_Product, StepBasic_ProductCategory, StepBasic_ProductCategoryRelationship, StepBasic_ProductDefinition, StepBasic_ProductDefinitionFormation, StepBasic_ProductDefinitionFormationRelationship, StepBasic_ProductDefinitionReference, StepBasic_ProductDefinitionRelationship, StepBasic_RoleAssociation, StepBasic_SecurityClassification, StepBasic_SecurityClassificationAssignment, StepBasic_SecurityClassificationLevel, StepBasic_VersionedActionRequest, STEPCAFControl_ExternFile, StepData_Described, StepData_EDescr, StepData_FreeFormEntity, StepData_NodeOfWriterLib, StepData_PDescr, StepData_SelectMember, StepData_UndefinedEntity, StepDimTol_DatumReference, StepDimTol_DatumReferenceModifierWithValue, StepDimTol_GeometricTolerance, StepDimTol_GeometricToleranceRelationship, StepDimTol_RunoutZoneOrientation, StepDimTol_ToleranceZoneDefinition, StepDimTol_ToleranceZoneForm, StepElement_AnalysisItemWithinRepresentation, StepElement_CurveElementEndReleasePacket, StepElement_CurveElementSectionDefinition, StepElement_ElementDescriptor, StepElement_ElementMaterial, StepElement_SurfaceElementProperty, StepElement_SurfaceSection, StepElement_SurfaceSectionField, StepFEA_Curve3dElementProperty, StepFEA_CurveElementEndOffset, StepFEA_CurveElementEndRelease, StepFEA_CurveElementInterval, StepFEA_CurveElementLocation, StepFEA_ElementGeometricRelationship, StepFEA_FeaCurveSectionGeometricRelationship, StepFEA_FeaSurfaceSectionGeometricRelationship, StepFEA_FreedomAndCoefficient, StepFEA_FreedomsList, StepGeom_CompositeCurveSegment, StepGeom_SurfacePatch, StepRepr_AssemblyComponentUsageSubstitute, StepRepr_ConfigurationDesign, StepRepr_ConfigurationItem, StepRepr_DataEnvironment, StepRepr_FunctionallyDefinedTransformation, StepRepr_ItemDefinedTransformation, StepRepr_MaterialDesignation, StepRepr_ProductConcept, StepRepr_PropertyDefinition, StepRepr_PropertyDefinitionRelationship, StepRepr_PropertyDefinitionRepresentation, StepRepr_Representation, StepRepr_RepresentationContext, StepRepr_RepresentationItem, StepRepr_RepresentationMap, StepRepr_RepresentationRelationship, StepRepr_ShapeAspect, StepRepr_ShapeAspectRelationship, STEPSelections_AssemblyComponent, STEPSelections_AssemblyLink, StepShape_BoxDomain, StepShape_ContextDependentShapeRepresentation, StepShape_DimensionalCharacteristicRepresentation, StepShape_DimensionalSize, StepShape_LimitsAndFits, StepShape_MeasureQualification, StepShape_PlusMinusTolerance, StepShape_PrecisionQualifier, StepShape_ToleranceValue, StepShape_TypeQualifier, StepShape_ValueFormatTypeQualifier, StepVisual_AreaInSet, StepVisual_Colour, StepVisual_CurveStyle, StepVisual_CurveStyleFont, StepVisual_CurveStyleFontPattern, StepVisual_FillAreaStyle, StepVisual_FillAreaStyleColour, StepVisual_Invisibility, StepVisual_PointStyle, StepVisual_PreDefinedItem, StepVisual_PresentationLayerAssignment, StepVisual_PresentationLayerUsage, StepVisual_PresentationSet, StepVisual_PresentationSize, StepVisual_PresentationStyleAssignment, StepVisual_PresentedItem, StepVisual_PresentedItemRepresentation, StepVisual_SurfaceSideStyle, StepVisual_SurfaceStyleBoundary, StepVisual_SurfaceStyleControlGrid, StepVisual_SurfaceStyleFillArea, StepVisual_SurfaceStyleParameterLine, StepVisual_SurfaceStyleSegmentationCurve, StepVisual_SurfaceStyleSilhouette, StepVisual_SurfaceStyleUsage, StepVisual_TextStyle, StepVisual_TextStyleForDefinedFont, StepVisual_ViewVolume, StlMesh_Mesh, StlMesh_MeshDomain, StlMesh_MeshTriangle, Storage_CallBack, Storage_Data, Storage_HeaderData, Storage_InternalData, Storage_Root, Storage_RootData, Storage_Schema, Storage_TypeData, Storage_TypedCallBack, TCollection_HAsciiString, TCollection_HExtendedString, TCollection_MapNode, TCollection_SeqNode, TColStd_HPackedMapOfInteger, TDataStd_HDataMapOfStringByte, TDataStd_HDataMapOfStringHArray1OfInteger, TDataStd_HDataMapOfStringHArray1OfReal, TDataStd_HDataMapOfStringInteger, TDataStd_HDataMapOfStringReal, TDataStd_HDataMapOfStringString, TDF_Attribute, TDF_AttributeDelta, TDF_Data, TDF_DataSet, TDF_Delta, TDF_RelocationTable, TDocStd_ApplicationDelta, TDocStd_MultiTransactionManager, TFunction_Driver, TFunction_DriverTable, TNaming_TranslateTool, TObj_Model, TObj_Object, TObj_ObjectIterator, TopLoc_Datum3D, TopLoc_SListNodeOfItemLocation, TopoDS_HShape, TopoDS_TShape, TopOpeBRep_FFDumper, TopOpeBRep_Hctxee2d, TopOpeBRep_Hctxff2d, TopOpeBRepBuild_HBuilder, TopOpeBRepBuild_Loop, TopOpeBRepDS_Association, TopOpeBRepDS_Check, TopOpeBRepDS_GapTool, TopOpeBRepDS_HDataStructure, TopOpeBRepDS_Interference, TopOpeBRepDS_Marker, TopOpeBRepTool_HBoxTool, TPrsStd_Driver, TPrsStd_DriverTable, Transfer_ActorOfProcessForFinder, Transfer_ActorOfProcessForTransient, Transfer_Binder, Transfer_Finder, Transfer_MapContainer, Transfer_ProcessForFinder, Transfer_ProcessForTransient, Transfer_ResultFromModel, Transfer_ResultFromTransient, TransferBRep_TransferResultInfo, Units_Dimensions, Units_Lexicon, Units_Quantity, Units_Token, Units_Unit, Units_UnitsDictionary, Units_UnitsSystem, V3d_Light, V3d_Plane, V3d_View, ViewerTest_EventManager, Vrml_AsciiText, Vrml_Coordinate3, Vrml_IndexedFaceSet, Vrml_IndexedLineSet, Vrml_LOD, Vrml_Material, Vrml_Normal, Vrml_SFImage, Vrml_TextureCoordinate2, VrmlConverter_Drawer, VrmlConverter_LineAspect, VrmlConverter_PointAspect, VrmlConverter_Projector, VrmlConverter_ShadingAspect, XmlMDF_ADriver, XmlMDF_ADriverTable, XSAlgo_AlgoContainer, XSAlgo_ToolContainer, XSControl_Controller, XSControl_TransferReader, XSControl_TransferWriter, and XSControl_Vars.
Public Member Functions | |
| virtual void | Delete () const override |
| Memory deallocator for transient classes. More... | |
 Public Member Functions inherited from Standard_Transient | |
| Standard_Transient () | |
| Empty constructor. More... | |
| Standard_Transient (const Standard_Transient &) | |
| Copy constructor – does nothing. More... | |
| Standard_Transient & | operator= (const Standard_Transient &) |
| Assignment operator, needed to avoid copying reference counter. More... | |
| virtual | ~Standard_Transient () |
| Destructor must be virtual. More... | |
| virtual const opencascade::handle< Standard_Type > & | DynamicType () const |
| Returns a type descriptor about this object. More... | |
| Standard_Boolean | IsInstance (const opencascade::handle< Standard_Type > &theType) const |
| Returns a true value if this is an instance of Type. More... | |
| Standard_Boolean | IsInstance (const Standard_CString theTypeName) const |
| Returns a true value if this is an instance of TypeName. More... | |
| Standard_Boolean | IsKind (const opencascade::handle< Standard_Type > &theType) const |
| Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More... | |
| Standard_Boolean | IsKind (const Standard_CString theTypeName) const |
| Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More... | |
| Standard_Transient * | This () const |
| Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. More... | |
| Standard_Integer | GetRefCount () const |
| Get the reference counter of this object. More... | |
| void | IncrementRefCounter () const |
| Increments the reference counter of this object. More... | |
| Standard_Integer | DecrementRefCounter () const |
| Decrements the reference counter of this object; returns the decremented value. More... | |
Additional Inherited Members | |
| Public Types inherited from Standard_Transient | |
| typedef void | base_type |
| Returns a type descriptor about this object. More... | |
| Static Public Member Functions inherited from Standard_Transient | |
| static const char * | get_type_name () |
| Returns a type descriptor about this object. More... | |
| static const opencascade::handle< Standard_Type > & | get_type_descriptor () |
| Returns type descriptor of Standard_Transient class. More... | |
Detailed Description
Intermediate class between Standard_Transient and descendants. The abstract class TShared is the root class of managed objects. TShared objects are managed by a memory manager based on reference counting. They have handle semantics. In other words, the reference counter is transparently incremented and decremented according to the scope of handles. When all handles, which reference a single object are out of scope, the reference counter becomes null and the object is automatically deleted. The deallocated memory is not given back to the system though. It is reclaimed for new objects of the same size. Warning This memory management scheme does not work for cyclic data structures. In such cases (with back pointers for example), you should interrupt the cycle in a class by using a full C++ pointer instead of a handle.
Member Function Documentation
|
overridevirtual |
Memory deallocator for transient classes.
Reimplemented from Standard_Transient.
The documentation for this class was generated from the following file:
