pro.fessional.mirana.evil

Class ThreadLocalProxy<T>

java.lang.Object

java.lang.ThreadLocal<T>

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

public class ThreadLocalProxy<T>
extends ThreadLocal<T>

Used only for static scenarios, which can be replaced after startup to avoid memory leaks.

Since:

2022-10-26

Author:

trydofor

Constructor Summary

Constructors

Constructor and Description
ThreadLocalProxy()
ThreadLocalProxy(@NotNull ThreadLocal<T> tl)

Method Summary

Modifier and Type	Method and Description
T	get()
@NotNull ThreadLocal<T>	getBackend()
void	remove()
@NotNull ThreadLocal<T>	replaceBackend(@NotNull ThreadLocal<T> threadLocal, boolean tryToCleanOld) change the internal ThreadLocal impl, return the old value.
void	set(T value)
static void	tryClear(ThreadLocal<?> threadLocal) try to clear the values in threadLocal by reflection.

Methods inherited from class java.lang.ThreadLocal

initialValue, withInitial

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadLocalProxy

public ThreadLocalProxy()

ThreadLocalProxy

public ThreadLocalProxy(@NotNull
                        @NotNull ThreadLocal<T> tl)

Method Detail

tryClear

public static void tryClear(ThreadLocal<?> threadLocal)
                     throws ThreadLocalAttention

try to clear the values in threadLocal by reflection. WARNING: An illegal reflective access operation has occurred

Throws:

ThreadLocalAttention

getBackend

@NotNull
public @NotNull ThreadLocal<T> getBackend()

replaceBackend

@NotNull
public @NotNull ThreadLocal<T> replaceBackend(@NotNull
                                                       @NotNull ThreadLocal<T> threadLocal,
                                                       boolean tryToCleanOld)
                                                throws ThreadLocalAttention

 change the internal ThreadLocal impl, return the old value. do NOT change it more than once.
 tryToCleanOld == true, will log
 WARNING: An illegal reflective access operation has occurred

 use tryToCleanOld=false if before starting any service or a few memory is in use.
 

Throws:

ThreadLocalAttention

get

public T get()

Overrides:

get in class ThreadLocal<T>

set

public void set(T value)

Overrides:

set in class ThreadLocal<T>

remove

public void remove()

Overrides:

remove in class ThreadLocal<T>