Modifier and Type	Class and Description
pack-priv static class	CleanerImpl.CleanerCleanable A PhantomCleanable implementation for tracking the Cleaner itself.
pack-priv static class	CleanerImpl.InnocuousThreadFactory A ThreadFactory for InnocuousThreads.
public static class	CleanerImpl.PhantomCleanableRef Perform cleaning on an unreachable PhantomReference.

Modifier and Type	Field and Description
private static Function<Cleaner, CleanerImpl>	cleanerImplAccess An object to access the CleanerImpl from a Cleaner; set by Cleaner init.
pack-priv final PhantomCleanable<?>	phantomCleanableList Heads of a CleanableList for each reference type.
pack-priv final ReferenceQueue<Object>	queue

Access	Constructor and Description
public	CleanerImpl() Constructor for CleanerImpl.

Method Summary

Modifier and Type	Method and Description
pack-priv static CleanerImpl	Returns: the corresponding CleanerImpl getCleanerImpl(Cleaner the cleaner cleaner) Called to get the CleanerImpl for a Cleaner.
public void	run() Implements java.lang.Runnable.run. Process queued Cleanables as long as the cleanable lists are not empty.
public static void	setCleanerImplAccess(Function<Cleaner, CleanerImpl> a function to map from Cleaner to CleanerImpl access) Called by Cleaner static initialization to provide the function to map from Cleaner to CleanerImpl.
public void	start(Cleaner the cleaner cleaner, ThreadFactory the thread factory threadFactory) Starts the Cleaner implementation.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

cleanerImplAccess	back to summary
private static Function<Cleaner, CleanerImpl> cleanerImplAccess An object to access the CleanerImpl from a Cleaner; set by Cleaner init.

phantomCleanableList	back to summary
pack-priv final PhantomCleanable<?> phantomCleanableList Heads of a CleanableList for each reference type.

queue	back to summary
pack-priv final ReferenceQueue<Object> queue

Constructor Detail

CleanerImpl	back to summary
public CleanerImpl() Constructor for CleanerImpl.

Method Detail

getCleanerImpl	back to summary
pack-priv static CleanerImpl getCleanerImpl(Cleaner cleaner) Called to get the CleanerImpl for a Cleaner. Parameters cleaner:Cleaner the cleaner Returns:CleanerImpl the corresponding CleanerImpl

getCleanerImpl

back to summary

pack-priv static CleanerImpl getCleanerImpl(Cleaner cleaner)

Called to get the CleanerImpl for a Cleaner.

Parameters

cleaner:Cleaner: the cleaner

Returns:CleanerImpl

the corresponding CleanerImpl

run	back to summary
public void run() Implements java.lang.Runnable.run. Process queued Cleanables as long as the cleanable lists are not empty. A Cleanable is in one of the lists for each Object and for the Cleaner itself. Terminates when the Cleaner is no longer reachable and has been cleaned and there are no more Cleanable instances for which the object is reachable. If the thread is a ManagedLocalsThread, the threadlocals are erased before each cleanup Annotations @Override

run

back to summary

public void run()

Implements java.lang.Runnable.run.

Process queued Cleanables as long as the cleanable lists are not empty. A Cleanable is in one of the lists for each Object and for the Cleaner itself. Terminates when the Cleaner is no longer reachable and has been cleaned and there are no more Cleanable instances for which the object is reachable.

If the thread is a ManagedLocalsThread, the threadlocals are erased before each cleanup

Annotations

@Override

setCleanerImplAccess	back to summary
public static void setCleanerImplAccess(Function<Cleaner, CleanerImpl> access) Called by Cleaner static initialization to provide the function to map from Cleaner to CleanerImpl. Parameters access:Function<Cleaner, CleanerImpl> a function to map from Cleaner to CleanerImpl

setCleanerImplAccess

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public static void setCleanerImplAccess(Function<Cleaner, CleanerImpl> access)

Called by Cleaner static initialization to provide the function to map from Cleaner to CleanerImpl.

Parameters

access:Function<Cleaner, CleanerImpl>: a function to map from Cleaner to CleanerImpl

start	back to summary
public void start(Cleaner cleaner, ThreadFactory threadFactory) Starts the Cleaner implementation. Ensure this is the CleanerImpl for the Cleaner. When started waits for Cleanables to be queued. Parameters cleaner:Cleaner the cleaner threadFactory:ThreadFactory the thread factory

start

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public void start(Cleaner cleaner, ThreadFactory threadFactory)

Starts the Cleaner implementation. Ensure this is the CleanerImpl for the Cleaner. When started waits for Cleanables to be queued.

Parameters

cleaner:Cleaner: the cleaner
threadFactory:ThreadFactory: the thread factory

jdk.internal.ref back to summary

pack-priv final Class CleanerImpl.CleanerCleanable

Class Inheritance

extends PhantomCleanable<Cleaner>

java.lang.Object
java.lang.ref.Reference
java.lang.ref.PhantomReference
jdk.internal.ref.PhantomCleanable
jdk.internal.ref.CleanerImpl.CleanerCleanable

A PhantomCleanable implementation for tracking the Cleaner itself.

Field Summary

Inherited from jdk.internal.ref.PhantomCleanable:: next prev

Constructor Summary

Access	Constructor and Description
pack-priv	CleanerCleanable(Cleaner cleaner)

Method Summary

Modifier and Type	Method and Description
protected void	performCleanup() Implements abstract jdk.internal.ref.PhantomCleanable.performCleanup. The `performCleanup` abstract method is overridden to implement the cleaning logic.

Inherited from jdk.internal.ref.PhantomCleanable:: clean clear enqueue isEnqueued isListEmpty

Constructor Detail

CleanerCleanable	back to summary
pack-priv CleanerCleanable(Cleaner cleaner)

Method Detail

performCleanup back to summary

performCleanup	back to summary
protected void performCleanup() Implements abstract jdk.internal.ref.PhantomCleanable.performCleanup. Doc from jdk.internal.ref.PhantomCleanable.performCleanup. The `performCleanup` abstract method is overridden to implement the cleaning logic. The `performCleanup` method should not be called except by the `clean` method which ensures at most once semantics. Annotations @Override

protected void performCleanup()

Implements abstract jdk.internal.ref.PhantomCleanable.performCleanup.

Doc from jdk.internal.ref.PhantomCleanable.performCleanup.

The performCleanup abstract method is overridden to implement the cleaning logic. The performCleanup method should not be called except by the clean method which ensures at most once semantics.

Annotations

@Override

jdk.internal.ref back to summary

pack-priv final Class CleanerImpl.InnocuousThreadFactory

Class Inheritance

extends Object
implements ThreadFactory

java.lang.Object
jdk.internal.ref.CleanerImpl.InnocuousThreadFactory

All Implemented Interfaces

java.util.concurrent.ThreadFactory

A ThreadFactory for InnocuousThreads. The factory is a singleton.

Field Summary

Modifier and Type	Field and Description
pack-priv final AtomicInteger	cleanerThreadNumber
pack-priv static final ThreadFactory	factory

Constructor Summary

Access	Constructor and Description
pack-priv	InnocuousThreadFactory()

Method Summary

Modifier and Type	Method and Description
pack-priv static ThreadFactory	factory()
public Thread	newThread(Runnable a runnable to be executed by new thread instance r) Implements java.util.concurrent.ThreadFactory.newThread. Constructs a new unstarted `Thread` to run the given runnable.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

cleanerThreadNumber	back to summary
pack-priv final AtomicInteger cleanerThreadNumber

factory	back to summary
pack-priv static final ThreadFactory factory

Constructor Detail

InnocuousThreadFactory	back to summary
pack-priv InnocuousThreadFactory()

Method Detail

factory	back to summary
pack-priv static ThreadFactory factory()

newThread back to summary

newThread	back to summary
public Thread newThread(Runnable r) Implements java.util.concurrent.ThreadFactory.newThread. Doc from java.util.concurrent.ThreadFactory.newThread. Constructs a new unstarted `Thread` to run the given runnable. Parameters r:Runnable a runnable to be executed by new thread instance Returns:Thread constructed thread, or `null` if the request to create a thread is rejected

public Thread newThread(Runnable r)

Implements java.util.concurrent.ThreadFactory.newThread.

Doc from java.util.concurrent.ThreadFactory.newThread.

Constructs a new unstarted Thread to run the given runnable.

Parameters

r:Runnable: a runnable to be executed by new thread instance

Returns:Thread

constructed thread, or null if the request to create a thread is rejected

jdk.internal.ref back to summary

public final Class CleanerImpl.PhantomCleanableRef

Class Inheritance

extends PhantomCleanable<Object>

java.lang.Object
java.lang.ref.Reference
java.lang.ref.PhantomReference
jdk.internal.ref.PhantomCleanable
jdk.internal.ref.CleanerImpl.PhantomCleanableRef

Perform cleaning on an unreachable PhantomReference.

Field Summary

Modifier and Type	Field and Description
private final Runnable	action

Inherited from jdk.internal.ref.PhantomCleanable:: next prev

Constructor Summary

Access	Constructor and Description
public	PhantomCleanableRef(Object the object to monitor obj, Cleaner the cleaner cleaner, Runnable the action Runnable action) Constructor for a phantom cleanable reference.
pack-priv	PhantomCleanableRef() Constructor used only for root of phantom cleanable list.

Method Summary

Modifier and Type	Method and Description
public void	clear() Overrides jdk.internal.ref.PhantomCleanable.clear. Direct clearing of the referent is not supported.
public Object	get() Overrides java.lang.ref.PhantomReference.get. Prevent access to referent even when it is still alive.
protected void	performCleanup() Implements abstract jdk.internal.ref.PhantomCleanable.performCleanup. The `performCleanup` abstract method is overridden to implement the cleaning logic.

Inherited from jdk.internal.ref.PhantomCleanable:: clean enqueue isEnqueued isListEmpty

Field Detail

action	back to summary
private final Runnable action

Constructor Detail

PhantomCleanableRef	back to summary
public PhantomCleanableRef(Object obj, Cleaner cleaner, Runnable action) Constructor for a phantom cleanable reference. Parameters obj:Object the object to monitor cleaner:Cleaner the cleaner action:Runnable the action Runnable

PhantomCleanableRef

back to summary

public PhantomCleanableRef(Object obj, Cleaner cleaner, Runnable action)

Constructor for a phantom cleanable reference.

Parameters

obj:Object: the object to monitor
cleaner:Cleaner: the cleaner
action:Runnable: the action Runnable

PhantomCleanableRef	back to summary
pack-priv PhantomCleanableRef() Constructor used only for root of phantom cleanable list.

Method Detail

clear	back to summary
public void clear() Overrides jdk.internal.ref.PhantomCleanable.clear. Direct clearing of the referent is not supported. Annotations @Override Exceptions UnsupportedOperationException: always

clear

back to summary

public void clear()

Overrides jdk.internal.ref.PhantomCleanable.clear.

Direct clearing of the referent is not supported.

Annotations

@Override

Exceptions

UnsupportedOperationException:: always

get back to summary

get	back to summary
public Object get() Overrides java.lang.ref.PhantomReference.get. Prevent access to referent even when it is still alive. Returns:Object Doc from java.lang.ref.PhantomReference.get. `null` Annotations @Override Exceptions UnsupportedOperationException: always

public Object get()

Overrides java.lang.ref.PhantomReference.get.

Prevent access to referent even when it is still alive.

Returns:Object

Doc from java.lang.ref.PhantomReference.get.

null

Annotations

@Override

Exceptions

UnsupportedOperationException:: always

performCleanup back to summary

performCleanup	back to summary
protected void performCleanup() Implements abstract jdk.internal.ref.PhantomCleanable.performCleanup. Doc from jdk.internal.ref.PhantomCleanable.performCleanup. The `performCleanup` abstract method is overridden to implement the cleaning logic. The `performCleanup` method should not be called except by the `clean` method which ensures at most once semantics. Annotations @Override

protected void performCleanup()

Implements abstract jdk.internal.ref.PhantomCleanable.performCleanup.

Doc from jdk.internal.ref.PhantomCleanable.performCleanup.

The performCleanup abstract method is overridden to implement the cleaning logic. The performCleanup method should not be called except by the clean method which ensures at most once semantics.

Annotations

@Override

public final Class CleanerImpl

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

pack-priv final Class CleanerImpl.CleanerCleanable

Field Summary

Constructor Summary

Method Summary

Constructor Detail

Method Detail

pack-priv final Class CleanerImpl.InnocuousThreadFactory

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public final Class CleanerImpl.PhantomCleanableRef

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail