/*
 * Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * questions.
 */


/*
 @test
 @key headful
 @bug 4148117 8160936
 @summary Resource exhaustion by heavyweight components.
 @requires (os.family == "windows")
 @run main ResourceExhaustionTest
*/

import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Label;
import java.util.Vector;

public class ResourceExhaustionTest {

    int numLabel = 0;
    int numFrame = 0;
    Vector frames = new Vector();

    public static void main(String argv[]) {
        ResourceExhaustionTest test = new ResourceExhaustionTest();
        test.runTest();
    }

    // The test creates large number (~2000) of heavyweight components
    // to verify that it is possible without running out of resources.
    public void runTest() {
        try {
            for (int i = 0; i < 40; i++) {
                numFrame = i;
                Frame f = new Frame(String.valueOf(i));
                f.setBounds(10 + i * 4, 10 + i * 10, 400, 300);
                f.setLayout(new GridLayout(10, 5));

                for (int j = 0; j < 50; j++) {
                    Label l = new Label(i + "," + j);
                    f.add(l);
                    numLabel++;
                }
                f.setVisible(true);
                frames.add(f);
            }
        } catch(Exception e) {
            System.out.println("Resources exhausted after creating " +
                numFrame + " Frames & " + numLabel + " Labels.");
            throw e;
        } finally {
            dispose();
        }
    }

    public void dispose() {
        for(int i = 0; i < frames.size(); i++) {
            ((Frame)frames.elementAt(i)).dispose();
        }
    }
}