com.jrockit.memleak.util
Class DummyClassInfo

java.lang.Object
  com.jrockit.memleak.util.DummyClassInfo

All Implemented Interfaces:

IAccessibleInfo, IClassInfo, IClassRef, INamedType, ITypeSpecifier, IDummy

public class DummyClassInfo
extends java.lang.Object
implements IClassInfo, IDummy

Dummy implementation of IClassInfo.

Author:

mpersson

Field Summary

Fields inherited from interface com.jrockit.memleak.IClassInfo

ANNOTATION, CLASS_TYPE_NAME, EMPTY_ARRAY, ENUM

Fields inherited from interface com.jrockit.memleak.IAccessibleInfo

SYNTHETIC, UNKNOWN_MODIFIERS

Constructor Summary

DummyClassInfo(java.lang.String name, IObjectInfo classLoader)

Method Summary

static DummyClassInfo	createNested(java.lang.String name, int depth) Create a dummy IClassInfo with a dummy IObjectInfo as class loader, both with the display name name.
int	getClassId()
IObjectInfo	getClassLoaderInfo(Policy policy) Get the class loader of this class, or null if it is the boot class loader.
IObjectSpecifier	getClassLoaderSpec() Get the class loader of this class, or null if it is the boot class loader.
IObjectInfo	getClassObjectInfo(Policy policy) For implementations with Feature.CLASS_IDS_ARE_OBJECT_IDS this should never return null (when called with a blocking policy).
IObjectSpecifier	getClassObjectSpec() For implementations with Feature.CLASS_IDS_ARE_OBJECT_IDS this should never return null.
int	getModifiers()
java.lang.String	getName() Returns the name of the entity (class, interface, array class, primitive type, or void) represented by this IClassInfo object.
int	getNumDeclaredStaticFields()
int	getNumInstanceFields()
java.lang.String	getSourceFileName() Returns the name of the source file for this class.
boolean	isArrayClass()
boolean	isDiscarded()
<T> T	select(ITypeResolver<T> resolver) Select the type or types using operations on resolver.

Methods inherited from class java.lang.Object

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

Constructor Detail

DummyClassInfo

public DummyClassInfo(java.lang.String name,
                      IObjectInfo classLoader)

Parameters:

name -

classLoader -

Method Detail

createNested

public static final DummyClassInfo createNested(java.lang.String name,
                                                int depth)

Create a dummy IClassInfo with a dummy IObjectInfo as class loader, both with the display name name. The class loader will also have a class, which will have a class loader and so forth, until depth dummy instances have been created.

Note that a similar effect could be produced by circular references, but it isn't recommended since that wouldn't be possible in a real JVM. Also someone might attempt to navigate this structure until the bootstrap class loader, normally designated by null, is found. (Although that type of navigation should stop once it sees anything implementing IDummy.)

Parameters:

name - the display name to use for classes and class loaders

depth - the total number of dummy instances to create

Returns:

a IClassInfo or null if depth is zero.

getClassLoaderSpec

public IObjectSpecifier getClassLoaderSpec()

Description copied from interface: IClassInfo

Get the class loader of this class, or null if it is the boot class loader. Implementations without Feature.CLASS_LOADERS may also return null.

Specified by:

getClassLoaderSpec in interface IClassInfo

Returns:

Returns the IObjectSpecifier of the class loader that loaded this class.

getClassLoaderInfo

public IObjectInfo getClassLoaderInfo(Policy policy)

Description copied from interface: IClassInfo

Get the class loader of this class, or null if it is the boot class loader. Null may also be returned if the value is not yet available, according to policy. Finally, implementations without Feature.CLASS_LOADERS may also return null.

Specified by:

getClassLoaderInfo in interface IClassInfo

Returns:

Returns the IObjectInfo of the class loader that loaded this class, or null.

getClassObjectSpec

public IObjectSpecifier getClassObjectSpec()

Description copied from interface: IClassInfo

For implementations with Feature.CLASS_IDS_ARE_OBJECT_IDS this should never return null. Other implementations might.

Specified by:

getClassObjectSpec in interface IClassInfo

Returns:

Returns the IObjectSpecifier of the Class instance that corresponds to this class, or null.

getClassObjectInfo

public IObjectInfo getClassObjectInfo(Policy policy)

Description copied from interface: IClassInfo

For implementations with Feature.CLASS_IDS_ARE_OBJECT_IDS this should never return null (when called with a blocking policy). Other implementations might.

Specified by:

getClassObjectInfo in interface IClassInfo

Returns:

Returns the IObjectInfo of the Class instance that corresponds to this class, or null.

getModifiers

public int getModifiers()

Specified by:

getModifiers in interface IAccessibleInfo

Returns:

access modifiers for the entity

See Also:

Modifier

getName

public java.lang.String getName()

Description copied from interface: IClassInfo

Returns the name of the entity (class, interface, array class, primitive type, or void) represented by this IClassInfo object.

Specified by:

getName in interface IClassInfo

Specified by:

getName in interface INamedType

Returns:

the name of the class represented by this IClassInfo object.

See Also:

Class.getName()

getNumDeclaredStaticFields

public int getNumDeclaredStaticFields()

Specified by:

getNumDeclaredStaticFields in interface IClassInfo

Returns:

the number of declared static fields in this class.

getNumInstanceFields

public int getNumInstanceFields()

Specified by:

getNumInstanceFields in interface IClassInfo

Returns:

the number of instance fields, including all inherited instance fields from super classes.

getSourceFileName

public java.lang.String getSourceFileName()

Description copied from interface: IClassInfo

Returns the name of the source file for this class. Generally, this corresponds to the SourceFile attribute of the relevant class file (as per The Java Virtual Machine Specification, Section 4.7.7).

Specified by:

getSourceFileName in interface IClassInfo

Returns:

the name of the source file, or null if this information is unavailable.

isArrayClass

public boolean isArrayClass()

Specified by:

isArrayClass in interface IClassInfo

Returns:

true of this is an array class, false otherwise.

getClassId

public int getClassId()

Specified by:

getClassId in interface IClassRef

Returns:

Returns the class ID.

isDiscarded

public boolean isDiscarded()

Specified by:

isDiscarded in interface IClassInfo

Returns:

true iff the class is known to have been garbage collected.

select

public <T> T select(ITypeResolver<T> resolver)

Description copied from interface: ITypeSpecifier

Select the type or types using operations on resolver.

NOTE: It is strictly forbidden to keep a reference to the given resolver (including weak references etc.) as well as any type of caching based on values returned from the resolver. Only the resolver itself is capable of determining if results may be cached.

Specified by:

select in interface ITypeSpecifier

Returns:

a resolved type