pro.fessional.mirana.evil

Class ThreadLocalSoft<T>

java.lang.Object

pro.fessional.mirana.evil.ThreadLocalSoft<T>

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

BuilderHolder, FormatHolder

public abstract class ThreadLocalSoft<T>
extends Object
implements Closeable

 Using ThreadLocal internally, there are leak pitfalls, you must use one of the following modes.
 (1) static, the only Ref in JVM, to avoid creating temporary Ref multiple times.
 (2) use try-finally-close mode to remove the Ref.
 

Since:

2022-09-22

Author:

trydofor

Constructor Summary

Constructors

Constructor and Description
ThreadLocalSoft(ThreadLocal<SoftReference<T>> threadLocal)

Method Summary

Modifier and Type	Method and Description
boolean	anewValue(T t) Reset to current value in a single thread and decide whether it is available
void	close()
abstract T	initValue() Init in a single thread, first time or anewValue() call
T	use() (1) static, the only Ref in JVM, to avoid creating temporary Ref multiple times.

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadLocalSoft

public ThreadLocalSoft(ThreadLocal<SoftReference<T>> threadLocal)
                throws ThreadLocalAttention

Throws:

ThreadLocalAttention

Method Detail

initValue

@NotNull
public abstract T initValue()

Init in a single thread, first time or anewValue() call

anewValue

public boolean anewValue(@NotNull
                         T t)

Reset to current value in a single thread and decide whether it is available

Parameters:

t - current value

Returns:

whether to initValue again.

use

@NotNull
public T use()

 (1) static, the only Ref in JVM, to avoid creating temporary Ref multiple times.
 (2) use try-finally-close mode to remove the Ref.
 

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable