com.oracle.truffle.api.utilities

Class AssumedValue<T>

java.lang.Object

com.oracle.truffle.api.utilities.AssumedValue<T>

public class AssumedValue<T>
extends Object

A value that the compiler can assume is constant, but can be changed by invalidation.

Compiled code that uses the value will be invalidated each time the value changes, so you should take care to only change values infrequently, or to monitor the number of times the value has changed and at some point to replace the value with something more generic so that it does not have to be changed and code does not have to keep being recompiled.

Since:

0.8 or earlier

Constructor Summary

Constructors

Constructor and Description
AssumedValue(String name, T initialValue)
AssumedValue(T initialValue)

Method Summary

Modifier and Type	Method and Description
T	get() Get the current value, updating it if it has been AssumedValue.set(T).
void	set(T newValue) Set a new value, which will be picked up the next time AssumedValue.get() is called.

Methods inherited from class java.lang.Object

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

Constructor Detail

AssumedValue

public AssumedValue(T initialValue)

Since:

0.8 or earlier

AssumedValue

public AssumedValue(String name,
                    T initialValue)

Since:

0.8 or earlier

Method Detail

get

public T get()

Get the current value, updating it if it has been AssumedValue.set(T). The compiler may be able to make this method return a constant value, but still accommodate mutation.

Since:

0.8 or earlier

set

public void set(T newValue)

Set a new value, which will be picked up the next time AssumedValue.get() is called.

Since:

0.8 or earlier