How do I modify an int atomically and thread-safely in Java?
Atomically increment, test & set, etc...?
Which is fine if all you need is the limited set of operations it provides. The "etc" in the question suggests more flexibility.
skaffman
2009-07-20 08:34:09
Does it ? If he's looking for more, he should be more explicit. AtomicInteger seems to be the right answer in the meantime
Brian Agnew
2009-07-20 08:35:51
Also have a look at the other classes in the java.util.concurrent package. They can be helpful for the "etc"-stuff
Roland Schneider
2009-07-20 08:37:31
+2
A:
Thread safety can be achieved via synchronized functions. Wrap your int (or such data) in a class which provides the required functionalities via synchronized methods, e.g.
public class X
{
protected int x;
public synchronized void set( int value )
{
x = value;
}
}
You can also use classes from the java.util.concurrent.atomic package, e.g. AtomicInteger or AtomicIntegerArray
CsTamas
2009-07-20 08:31:38