Jython 2.7.4 · org.python.core.finalization.FinalizeTrigger

Field Summary

Modifier and Type	Field and Description
public static FinalizeTriggerFactory	factory This factory hook is reserved for use by JyNI.
public static final byte	FINALIZED_FLAG Indicates that this trigger was already finalized.
public byte	flags
public static final byte	NOT_FINALIZABLE_FLAG Indicates that the underlying PyObject was never intended to be finalized.
public static final byte	NOTIFY_GC_FLAG This flag tells the finalize trigger to call `gc#notifyFinalize(PyObject)` after it called the finalizer.
public static final byte	ONLY_BUILTIN_FLAG Indicates that only `org.python.core.finalization.FinalizableBuiltin` shall be called.
protected PyObject	toFinalize

Constructor Summary

Access	Constructor and Description
protected	FinalizeTrigger(PyObject toFinalize)

Method Summary

Modifier and Type	Method and Description
public static void	appendFinalizeTriggerForBuiltin(PyObject obj)
public void	clear()
public static void	ensureFinalizer(PyObject resurrect) Recreates the `FinalizeTrigger` of the given object.
protected void	finalize() Overrides java.lang.Object.finalize. Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
public static boolean	hasActiveTrigger(PyObject obj)
public boolean	isActive()
protected boolean	isCyclic()
public static boolean	isFinalizable(PyObject obj)
public boolean	isFinalized()
protected boolean	isUncollectable()
public static FinalizeTrigger	makeTrigger(PyObject toFinalize)
public void	performFinalization()
public static void	runFinalizer(PyObject toFinalize)
public static void	runFinalizer(PyObject toFinalize, boolean runBuiltinOnly)
public void	trigger(PyObject toFinalize)

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

Field Detail

factory	back to summary
public static FinalizeTriggerFactory factory This factory hook is reserved for use by JyNI. It allows to replace the default `FinalizeTrigger`. JyNI needs it to support garbage collection.

FINALIZED_FLAG	back to summary
public static final byte FINALIZED_FLAG Indicates that this trigger was already finalized.

flags	back to summary
public byte flags

NOT_FINALIZABLE_FLAG	back to summary
public static final byte NOT_FINALIZABLE_FLAG Indicates that the underlying PyObject was never intended to be finalized. It is actually not finalizable and the trigger only exists to notify `org.python.modules.gc` that the underlying object was finalized. This is needed for some advanced gc-functionality.

NOTIFY_GC_FLAG	back to summary
public static final byte NOTIFY_GC_FLAG This flag tells the finalize trigger to call `gc#notifyFinalize(PyObject)` after it called the finalizer.

ONLY_BUILTIN_FLAG	back to summary
public static final byte ONLY_BUILTIN_FLAG Indicates that only `org.python.core.finalization.FinalizableBuiltin` shall be called.

toFinalize	back to summary
protected PyObject toFinalize

Constructor Detail

FinalizeTrigger	back to summary
protected FinalizeTrigger(PyObject toFinalize)

Method Detail

appendFinalizeTriggerForBuiltin	back to summary
public static void appendFinalizeTriggerForBuiltin(PyObject obj)

clear	back to summary
public void clear()

ensureFinalizer	back to summary
public static void ensureFinalizer(PyObject resurrect) Recreates the `FinalizeTrigger` of the given object. This makes sure that once the resurrected object is gc'ed again, its `__del__`-method will be called again.

finalize back to summary

finalize	back to summary
protected void finalize() throws Throwable Overrides java.lang.Object.finalize. Doc from java.lang.Object.finalize. Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. A subclass overrides the `finalize` method to dispose of system resources or to perform other cleanup. When running in a Java virtual machine in which finalization has been disabled or removed, the garbage collector will never call `finalize()`. In a Java virtual machine in which finalization is enabled, the garbage collector might call `finalize` only after an indefinite delay. The general contract of `finalize` is that it is invoked if and when the Java virtual machine has determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, except as a result of an action taken by the finalization of some other object or class which is ready to be finalized. The `finalize` method may take any action, including making this object available again to other threads; the usual purpose of `finalize`, however, is to perform cleanup actions before the object is irrevocably discarded. For example, the finalize method for an object that represents an input/output connection might perform explicit I/O transactions to break the connection before the object is permanently discarded. The `finalize` method of class `Object` performs no special action; it simply returns normally. Subclasses of `Object` may override this definition. The Java programming language does not guarantee which thread will invoke the `finalize` method for any given object. It is guaranteed, however, that the thread that invokes finalize will not be holding any user-visible synchronization locks when finalize is invoked. If an uncaught exception is thrown by the finalize method, the exception is ignored and finalization of that object terminates. After the `finalize` method has been invoked for an object, no further action is taken until the Java virtual machine has again determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, including possible actions by other objects or classes which are ready to be finalized, at which point the object may be discarded. The `finalize` method is never invoked more than once by a Java virtual machine for any given object. Any exception thrown by the `finalize` method causes the finalization of this object to be halted, but is otherwise ignored. Exceptions Throwable: the `Exception` raised by this method

protected void finalize() throws Throwable

Overrides java.lang.Object.finalize.

Doc from java.lang.Object.finalize.

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. A subclass overrides the finalize method to dispose of system resources or to perform other cleanup.

When running in a Java virtual machine in which finalization has been disabled or removed, the garbage collector will never call finalize(). In a Java virtual machine in which finalization is enabled, the garbage collector might call finalize only after an indefinite delay.

The general contract of finalize is that it is invoked if and when the Java virtual machine has determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, except as a result of an action taken by the finalization of some other object or class which is ready to be finalized. The finalize method may take any action, including making this object available again to other threads; the usual purpose of finalize, however, is to perform cleanup actions before the object is irrevocably discarded. For example, the finalize method for an object that represents an input/output connection might perform explicit I/O transactions to break the connection before the object is permanently discarded.

The finalize method of class Object performs no special action; it simply returns normally. Subclasses of Object may override this definition.

The Java programming language does not guarantee which thread will invoke the finalize method for any given object. It is guaranteed, however, that the thread that invokes finalize will not be holding any user-visible synchronization locks when finalize is invoked. If an uncaught exception is thrown by the finalize method, the exception is ignored and finalization of that object terminates.

After the finalize method has been invoked for an object, no further action is taken until the Java virtual machine has again determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, including possible actions by other objects or classes which are ready to be finalized, at which point the object may be discarded.

The finalize method is never invoked more than once by a Java virtual machine for any given object.

Any exception thrown by the finalize method causes the finalization of this object to be halted, but is otherwise ignored.

Exceptions

Throwable:: the Exception raised by this method

hasActiveTrigger	back to summary
public static boolean hasActiveTrigger(PyObject obj)

isActive	back to summary
public boolean isActive()

isCyclic	back to summary
protected boolean isCyclic()

isFinalizable	back to summary
public static boolean isFinalizable(PyObject obj)

isFinalized	back to summary
public boolean isFinalized()

isUncollectable	back to summary
protected boolean isUncollectable()

makeTrigger	back to summary
public static FinalizeTrigger makeTrigger(PyObject toFinalize)

performFinalization	back to summary
public void performFinalization()

runFinalizer	back to summary
public static void runFinalizer(PyObject toFinalize)

runFinalizer	back to summary
public static void runFinalizer(PyObject toFinalize, boolean runBuiltinOnly)