source: src/test/java/agents/nastyagent/NearlyOutOfMem.java@ 126

package agents.nastyagent;

import java.util.ArrayList;
import java.util.List;

import genius.core.actions.Action;

/**
 * Deliberately goes out of memory while choosing an action.
 * 
 * @author W.Pasman 25jan16
 *
 */
public class NearlyOutOfMem extends NastyAgent {
        private ArrayList<String> memory = new ArrayList<String>();
        private final static String block = "01234567890123456789123456789012";

        @Override
        public Action chooseAction(List<Class<? extends Action>> possibleActions) {
                doubleMemory();
                return super.chooseAction(possibleActions);
        }

        /**
         * Double the amount of used memory (starts with 32 bytes if no mem in use
         * yet) until only 1000 bytes are left.
         */
        private void doubleMemory() {
                long toAdd = memory.size();
                if (toAdd == 0) {
                        toAdd = 1;
                }
                for (long i = 0; i < toAdd; i++) {
                        memory.add(block);
                        if (Runtime.getRuntime().freeMemory() < 10000)
                                return;
                }
        }
}