#include </home/sspr/src/www/orocos-1.0/export/build/orocos-rtt-1.2.2/build/rtt/DataObjectInterfaces.hpp>
Inheritance diagram for DataObjectLocked:
It allows multiple read/write requests using a single lock. This is the in any case threadsafe implementation, and can be blocking in situations where you do not want that. Use the DataObjectPrioritySet and DataObjectPriorityGet classes for non blocking Set or Get operations.
Public Types | |
| typedef T | DataType |
| The type of the data. | |
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typedef boost::intrusive_ptr< DataObjectInterface< T > > | shared_ptr |
| If you plan to use a reference counted DataObject, use this type to store it and apply this->deref() to enable reference counting. | |
| typedef DataSource< T >::value_t | value_t |
| The bare type of T is extracted into value_t. | |
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typedef boost::call_traits< value_t >::param_type | param_t |
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typedef boost::call_traits< value_t >::reference | reference_t |
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typedef boost::call_traits< value_t >::const_reference | const_reference_t |
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typedef boost::remove_const < typename boost::call_traits< value_t >::param_type >::type | copy_t |
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typedef boost::intrusive_ptr< const AssignableDataSource< T > > | const_ptr |
| Use this type to store a const pointer to a DataSourceBase. | |
| typedef T | result_t |
Public Member Functions | |
| DataObjectLocked (const std::string &_name, const T &initial_value=T()) | |
| Construct a DataObjectLocked by name. | |
| const std::string & | getName () const |
| Return the name of this DataObject. | |
| void | setName (const std::string &_name) |
| void | Get (DataType &pull) const |
| Get a copy of the Data of the module. | |
| DataType | Get () const |
| Get a copy of the data of the module. | |
| void | Set (const DataType &push) |
| Set the data to a certain value. | |
| DataObjectLocked< DataType > * | clone () const |
| Return a shallow clone of this DataSource. | |
| DataObjectLocked< DataType > * | copy (std::map< const DataSourceBase *, DataSourceBase * > &) const |
| Create a deep copy of this DataSource, unless it is already cloned. | |
| DataSource< T >::result_t | value () const |
| Normally, value() does not trigger a get(), but for DataObjects, this is actually the sanest thing to do. | |
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virtual DataSource< DataType >::result_t | get () const |
| Return the data as type T. | |
| virtual void | set (typename AssignableDataSource< DataType >::param_t t) |
| virtual AssignableDataSource< DataType >::reference_t | set () |
| Get a reference (or null) to the value of this DataSource. | |
| virtual void | set (param_t t)=0 |
| Set this DataSource with a value. | |
| virtual AssignableDataSource< DataType >::const_reference_t | rvalue () const |
| Get a const reference (or null) to the value of this DataSource. | |
| virtual bool | update (DataSourceBase *other) |
| Update the value of this DataSource with the value of an other DataSource. | |
| virtual bool | update (const CORBA::Any &any) |
| Updates the value of this DataSource with the value of a CORBA Any object. | |
| virtual CommandInterface * | updateCommand (DataSourceBase *other) |
| Generate a CommandInterface object which will update this DataSource with the value of another DataSource when execute()'ed. | |
| virtual bool | evaluate () const |
| Force an evaluation of the DataSourceBase. | |
| virtual std::string | getType () const |
| Return useful type info in a human readable format. | |
| virtual const TypeInfo * | getTypeInfo () const |
| Return the Orocos type info object. | |
| virtual std::string | getTypeName () const |
| Return the Orocos type name, without const, pointer or reference qualifiers. | |
| virtual CORBA::Any * | createAny () |
| Creates a CORBA Any object with the current value of this DataSource. | |
| virtual CORBA::Any * | getAny () |
| Creates a CORBA Any object with the current value of this DataSource. | |
| void | ref () const |
| Increase the reference count by one. | |
| void | deref () const |
| Decrease the reference count by one and delete this on zero. | |
| virtual void | reset () |
| Reset the data to initial values. | |
| virtual void | updated () |
| In case the DataSource returns a 'reference' type, call this method to notify it that the data was updated in the course of an invocation of get(). | |
| virtual bool | updatePart (DataSourceBase *part, DataSourceBase *other) |
| Update part of the value of this DataSource with the value of an other DataSource. | |
| virtual CommandInterface * | updatePartCommand (DataSourceBase *part, DataSourceBase *other) |
| Generate a CommandInterface object which will partially update this DataSource with the value of another DataSource when execute()'ed. | |
| std::ostream & | write (std::ostream &os) |
| Stream the contents of this object. | |
| std::string | toString () |
| Get the contents of this object as a string. | |
| bool | decomposeType (PropertyBag &targetbag) |
| Decompose the contents of this object into properties. | |
| bool | composeType (DataSourceBase::shared_ptr source) |
| Compose the contents of this object from another datasource. | |
Static Public Member Functions | |
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static AssignableDataSource< T > * | narrow (DataSourceBase *db) |
| This method narrows a DataSourceBase to a typeded AssignableDataSource, possibly returning a new object. | |
| static std::string | GetType () |
| Return usefull type info in a human readable format. | |
| static const TypeInfo * | GetTypeInfo () |
| Return the Orocos type info. | |
| static std::string | GetTypeName () |
| Return the Orocos type name, without const, pointer or reference qualifiers. | |
Protected Attributes | |
| oro_atomic_t | refcount |
| We keep the refcount ourselves. | |
| DataObjectLocked | ( | const std::string & | _name, | |
| const T & | initial_value = T() | |||
| ) | [inline] |
| const std::string& getName | ( | ) | const [inline, virtual] |
| void Get | ( | DataType & | pull | ) | const [inline, virtual] |
Get a copy of the Data of the module.
| pull | A copy of the data. |
Implements DataObjectInterface.
| DataType Get | ( | ) | const [inline, virtual] |
Get a copy of the data of the module.
This method is thread-safe.
Implements DataObjectInterface.
| void Set | ( | const DataType & | push | ) | [inline, virtual] |
Set the data to a certain value.
| push | The data which must be set. |
Implements DataObjectInterface.
| DataObjectLocked<DataType>* clone | ( | ) | const [inline, virtual] |
Return a shallow clone of this DataSource.
This method returns a duplicate of this instance which re-uses the DataSources this DataSource holds reference to. The clone() function is thus a non-deep copy.
Implements AssignableDataSource.
| DataObjectLocked<DataType>* copy | ( | std::map< const DataSourceBase *, DataSourceBase * > & | ) | const [inline, virtual] |
Create a deep copy of this DataSource, unless it is already cloned.
Places the association (parent, clone) in alreadyCloned. If the DataSource is non-copyable (for example it represents the Property of a Task ), this may be returned.
Implements AssignableDataSource.
| virtual AssignableDataSource<DataType>::reference_t set | ( | ) | [inline, virtual, inherited] |
Get a reference (or null) to the value of this DataSource.
Getting a reference to an internal data structure is not thread-safe. DataSources which wish to protect their data from concurrent access may return the null reference with this method. All calls to set() must first check whether they do not return null.
Implements AssignableDataSource.
| virtual AssignableDataSource<DataType>::const_reference_t rvalue | ( | ) | const [inline, virtual, inherited] |
Get a const reference (or null) to the value of this DataSource.
Getting a reference to an internal data structure is not thread-safe. DataSources which wish to protect their data from concurrent access may return the null reference with this method. All calls to rvalue() must first check whether they do not return null.
Implements AssignableDataSource.
| bool update | ( | DataSourceBase * | other | ) | [virtual, inherited] |
Update the value of this DataSource with the value of an other DataSource.
Update does a full update of the value, adding extra information if necessary.
Reimplemented from DataSourceBase.
| bool update | ( | const CORBA::Any & | any | ) | [virtual, inherited] |
Updates the value of this DataSource with the value of a CORBA Any object.
| any | The value to update to. |
Reimplemented from DataSourceBase.
| CommandInterface * updateCommand | ( | DataSourceBase * | other | ) | [virtual, inherited] |
Generate a CommandInterface object which will update this DataSource with the value of another DataSource when execute()'ed.
Reimplemented from DataSourceBase.
Reimplemented in IndexedValueDataSource.
| bool evaluate | ( | ) | const [virtual, inherited] |
Force an evaluation of the DataSourceBase.
Implements DataSourceBase.
| CORBA::Any * createAny | ( | ) | [virtual, inherited] |
Creates a CORBA Any object with the current value of this DataSource.
This does not trigger the evaluation() of this data source.
Implements DataSourceBase.
| CORBA::Any * getAny | ( | ) | [virtual, inherited] |
Creates a CORBA Any object with the current value of this DataSource.
This does trigger the evaluation() of this data source.
Implements DataSourceBase.
| virtual bool updatePart | ( | DataSourceBase * | part, | |
| DataSourceBase * | other | |||
| ) | [virtual, inherited] |
Update part of the value of this DataSource with the value of an other DataSource.
Update does a partial update of the value, according to part, which is most likely an index or hash value of some type.
| virtual CommandInterface* updatePartCommand | ( | DataSourceBase * | part, | |
| DataSourceBase * | other | |||
| ) | [virtual, inherited] |
Generate a CommandInterface object which will partially update this DataSource with the value of another DataSource when execute()'ed.
part is an index or hash value of some type.
Reimplemented in IndexedValueDataSource.
| std::ostream& write | ( | std::ostream & | os | ) | [inherited] |
| std::string toString | ( | ) | [inherited] |
| bool decomposeType | ( | PropertyBag & | targetbag | ) | [inherited] |
| bool composeType | ( | DataSourceBase::shared_ptr | source | ) | [inherited] |
oro_atomic_t refcount [mutable, protected, inherited] |
We keep the refcount ourselves.
We aren't using boost::shared_ptr, because boost::intrusive_ptr is better, exactly because it can be used with refcounts that are stored in the class itself. Advantages are that the shared_ptr's for derived classes use the same refcount, which is of course very much desired, and that refcounting happens in an efficient way, which is also nice :)
1.5.1