Package org.eclipse.mat.inspections

Class ReferenceQuery

java.lang.Object

org.eclipse.mat.inspections.ReferenceQuery

All Implemented Interfaces:

IQuery

public class ReferenceQuery
extends Object
implements IQuery

Extract information about objects extending java.lang.ref.Reference, e.g. weak and soft references, and Finalizer.

Field Summary

Fields

Modifier and Type	Field	Description
IHeapObjectArgument	objects
String	referent_attribute
ISnapshot	snapshot

Constructor Summary

Constructors

Constructor	Description
ReferenceQuery()

Method Summary

Modifier and Type	Method	Description
static IResult	execute(String className, ISnapshot snapshot, String labelHistogramReferenced, String labelHistogramRetained, String labelHistogramStronglyRetainedReferents, IProgressListener listener)	Important: the className must point to java.lang.ref.Reference or one of its subclasses.
static CompositeResult	execute(ArrayInt instanceSet, SetInt referentSet, ISnapshot snapshot, String labelHistogramReferenced, String labelHistogramRetained, String labelHistogramStronglyRetainedReferents, String referentField, IProgressListener listener)
static CompositeResult	execute(ArrayInt instanceSet, SetInt referentSet, ISnapshot snapshot, String labelHistogramReferenced, String labelHistogramRetained, String labelHistogramStronglyRetainedReferents, IProgressListener listener)
IResult	execute(IProgressListener listener)	The execute method is called after all arguments have been injected into the query instance.
static ObjectReference	getReferent(IInstance instance)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

snapshot

public ISnapshot snapshot

objects

public IHeapObjectArgument objects

referent_attribute

public String referent_attribute

Constructor Details

ReferenceQuery

public ReferenceQuery()

Method Details

execute

public IResult execute(IProgressListener listener)
                throws Exception

Description copied from interface: IQuery

The execute method is called after all arguments have been injected into the query instance. Typical results are TextResult, CompositeResult, SectionSpec etc.

Specified by:

execute in interface IQuery

Parameters:

listener - Monitor to report progress and check for cancellation.

Returns:

The result of the query.

Throws:

Exception - if something went wrong running the query

execute

public static IResult execute(String className,
 ISnapshot snapshot,
 String labelHistogramReferenced,
 String labelHistogramRetained,
 String labelHistogramStronglyRetainedReferents,
 IProgressListener listener)
                       throws SnapshotException

Important: the className must point to java.lang.ref.Reference or one of its subclasses. It is not possible to check this, as some heap dumps lack class hierarchy information.

Throws:

SnapshotException

execute

public static CompositeResult execute(ArrayInt instanceSet,
 SetInt referentSet,
 ISnapshot snapshot,
 String labelHistogramReferenced,
 String labelHistogramRetained,
 String labelHistogramStronglyRetainedReferents,
 IProgressListener listener)
                               throws SnapshotException

Throws:

SnapshotException

execute

public static CompositeResult execute(ArrayInt instanceSet,
 SetInt referentSet,
 ISnapshot snapshot,
 String labelHistogramReferenced,
 String labelHistogramRetained,
 String labelHistogramStronglyRetainedReferents,
 String referentField,
 IProgressListener listener)
                               throws SnapshotException

Throws:

SnapshotException

getReferent

public static ObjectReference getReferent(IInstance instance)
                                   throws SnapshotException

Throws:

SnapshotException