org.rocksdb

类 AbstractImmutableNativeReference

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

所有已实现的接口:

java.lang.AutoCloseable

直接已知子类:

RocksCallbackObject, RocksObject

public abstract class AbstractImmutableNativeReference
extends AbstractNativeReference

Offers functionality for implementations of AbstractNativeReference which have an immutable reference to the underlying native C++ object

字段概要

字段

限定符和类型	字段和说明
protected java.util.concurrent.atomic.AtomicBoolean	owningHandle_ A flag indicating whether the current AbstractNativeReference is responsible to free the underlying C++ object

构造器概要

构造器

限定符	构造器和说明
protected	AbstractImmutableNativeReference(boolean owningHandle)

方法概要

限定符和类型	方法和说明
void	close() Frees the underlying C++ object It is strong recommended that the developer calls this after they have finished using the object.
protected void	disOwnNativeHandle() Releases this AbstractNativeReference from the responsibility of freeing the underlying native C++ object This will prevent the object from attempting to delete the underlying native object in close().
protected abstract void	disposeInternal() The helper function of close() which all subclasses of AbstractImmutableNativeReference must implement to release their underlying native C++ objects.
boolean	isOwningHandle() Returns true if we are responsible for freeing the underlying C++ object

从类继承的方法 java.lang.Object

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

字段详细资料

owningHandle_

protected final java.util.concurrent.atomic.AtomicBoolean owningHandle_

A flag indicating whether the current AbstractNativeReference is responsible to free the underlying C++ object

构造器详细资料

AbstractImmutableNativeReference

protected AbstractImmutableNativeReference(boolean owningHandle)

方法详细资料

isOwningHandle

public boolean isOwningHandle()

从类复制的说明: AbstractNativeReference

Returns true if we are responsible for freeing the underlying C++ object

指定者:

isOwningHandle 在类中 AbstractNativeReference

返回:

true if we are responsible to free the C++ object

disOwnNativeHandle

protected final void disOwnNativeHandle()

Releases this AbstractNativeReference from the responsibility of freeing the underlying native C++ object

This will prevent the object from attempting to delete the underlying native object in close(). This must be used when another object takes over ownership of the native object or both will attempt to delete the underlying object when closed.

When disOwnNativeHandle() is called, close() will subsequently take no action. As a result, incorrect use of this function may cause a memory leak.

close

public void close()

从类复制的说明: AbstractNativeReference

Frees the underlying C++ object

It is strong recommended that the developer calls this after they have finished using the object.

Note, that once an instance of AbstractNativeReference has been closed, calling any of its functions will lead to undefined behavior.

指定者:

close 在接口中 java.lang.AutoCloseable

指定者:

close 在类中 AbstractNativeReference

disposeInternal

protected abstract void disposeInternal()

The helper function of close() which all subclasses of AbstractImmutableNativeReference must implement to release their underlying native C++ objects.