epics::pvData::Field Class Reference

This class implements introspection object for field. More...

#include "pvIntrospect.h"

Inheritance diagram for epics::pvData::Field:

Collaboration diagram for epics::pvData::Field:

Classes
struct	Helper

Public Types
enum	{ isField =1 }

Public Member Functions
	POINTER_DEFINITIONS (Field)
virtual	~Field ()
Type	getType () const
virtual std::string	getID () const =0
virtual std::ostream &	dump (std::ostream &o) const =0
std::tr1::shared_ptr< PVField >	build () const
Public Member Functions inherited from epics::pvData::Serializable
virtual	~Serializable ()
virtual void	serialize (ByteBuffer *buffer, SerializableControl *flusher) const =0
virtual void	deserialize (ByteBuffer *buffer, DeserializableControl *flusher)=0

Static Public Attributes
static size_t	num_instances

Protected Member Functions
	Field (Type type)
void	cacheCleanup ()

Friends
struct	Helper
class	StructureArray
class	Structure
class	PVFieldPvt
class	StandardField
class	BasePVStructureArray
class	FieldCreate

Detailed Description

This class implements introspection object for field.

Definition at line 336 of file pvIntrospect.h.

Member Enumeration Documentation

anonymous enum

Enumerator
isField

Definition at line 366 of file pvIntrospect.h.

{isField=1};

Constructor & Destructor Documentation

epics::pvData::Field::~Field ( )

virtual

Definition at line 88 of file FieldCreateFactory.cpp.

              {
    REFTRACE_DECREMENT(num_instances);
}

epics::pvData::Field::Field ( Type  type )

protected

Constructor

Parameters

type	The field type.

Definition at line 81 of file FieldCreateFactory.cpp.

    : m_fieldType(type)
    , m_hash(0)
{
    REFTRACE_INCREMENT(num_instances);
}

Member Function Documentation

std::tr1::shared_ptr< PVField > epics::pvData::Field::build

(

)

const

Allocate a new instance

Version

Added after 7.0.0

Definition at line 108 of file FieldCreateFactory.cpp.

{
    FieldConstPtr self(shared_from_this());
    return getPVDataCreate()->createPVField(self);
}

void epics::pvData::Field::cacheCleanup ( )

protected

Definition at line 92 of file FieldCreateFactory.cpp.

{
    const FieldCreatePtr& create(getFieldCreate());

    Lock G(create->mutex);

    std::pair<FieldCreate::cache_t::iterator, FieldCreate::cache_t::iterator> itp(create->cache.equal_range(m_hash));
    for(; itp.first!=itp.second; ++itp.first) {
        Field* cent(itp.first->second);
        if(cent==this) {
            create->cache.erase(itp.first);
            return;
        }
    }
}

virtual std::ostream& epics::pvData::Field::dump ( std::ostream &  o ) const

pure virtual

Puts the string representation to the stream.

Parameters

o	output stream.

Returns

The output stream.

Implemented in epics::pvData::Union, epics::pvData::Structure, epics::pvData::UnionArray, epics::pvData::StructureArray, epics::pvData::ScalarArray, and epics::pvData::Scalar.

virtual std::string epics::pvData::Field::getID ( ) const

pure virtual

Get the identification string.

Returns

The identification string, can be empty.

Implemented in epics::pvData::Union, epics::pvData::Structure, epics::pvData::UnionArray, epics::pvData::StructureArray, epics::pvData::FixedScalarArray, epics::pvData::BoundedScalarArray, epics::pvData::ScalarArray, epics::pvData::BoundedString, and epics::pvData::Scalar.

Type epics::pvData::Field::getType ( ) const

inline

Get the field type.

Returns

The type.

Definition at line 348 of file pvIntrospect.h.

{return m_fieldType;}

epics::pvData::Field::POINTER_DEFINITIONS

(

Field

)

Friends And Related Function Documentation

friend class BasePVStructureArray

friend

Definition at line 385 of file pvIntrospect.h.

friend class FieldCreate

friend

Definition at line 386 of file pvIntrospect.h.

friend struct Helper

friend

Definition at line 378 of file pvIntrospect.h.

friend class PVFieldPvt

friend

Definition at line 383 of file pvIntrospect.h.

friend class StandardField

friend

Definition at line 384 of file pvIntrospect.h.

friend class Structure

friend

Definition at line 382 of file pvIntrospect.h.

friend class StructureArray

friend

Definition at line 381 of file pvIntrospect.h.

Member Data Documentation

size_t epics::pvData::Field::num_instances

static

Definition at line 340 of file pvIntrospect.h.

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

• modules/pvData/src/pv/pvIntrospect.h
• modules/pvData/src/factory/FieldCreateFactory.cpp