net.sf.ehcache.util.lang
Class VicariousThreadLocal<T>
java.lang.Object
java.lang.ThreadLocal<T>
net.sf.ehcache.util.lang.VicariousThreadLocal<T>
public class VicariousThreadLocal<T>
- extends ThreadLocal<T>
A drop-in replacement ThreadLocal
implementation that does not leak
when thread-local values reference the ThreadLocal
object.
The code is optimised to cope with frequently changing values.
In comparison to plain ThreadLocal
, this implementation:
- from the point of view of a single thread,
each thread-local
{code #get} requires access to four objects instead of two
- is fractionally slower in terms of CPU cycles for {code #get}
- uses around twice the memory for each thead-local value
- uses around four times the memory for each
ThreadLocal
- may release thread-local values for garbage collection more promptly
Method Summary |
T |
get()
|
void |
poll()
Check if any strong references need should be removed due to thread exit. |
void |
remove()
|
void |
set(T value)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
VicariousThreadLocal
public VicariousThreadLocal()
- Creates a new
VicariousThreadLocal
.
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>
poll
public void poll()
- Check if any strong references need should be removed due to thread exit.
Copyright 2001-2014, Terracotta, Inc.