urweb/src/main/java/at/acdp/urweb/sclient/Log.java

package at.acdp.urweb.sclient;

import at.acdp.urweb.sclient.data.ILogentry;

import java.util.ArrayList;
import java.util.Arrays;

public class Log {
    private final static int LENGTH=100;
    private static ILogentry[] list=new ILogentry[LENGTH];
    private static int pos=0;



    public static void add(ILogentry le) {
        synchronized (list) {
            list[pos++%LENGTH]=le;
        }
    }

    public static void get(int from) {
        synchronized (list){
            int length=LENGTH-from+pos;
            ILogentry[] ret=new ILogentry[length];
            int upperPos=from+length;
            if(upperPos>LENGTH){
                int lowerLength=upperPos-LENGTH;
                upperPos=LENGTH;
                System.arraycopy(list,0,ret,0,lowerLength);
            }
            System.arraycopy(list,from,ret,0,upperPos-from);
        }

    }


}