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/*
* Copyright (c) 2014, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.*;
import java.awt.image.BufferedImage;
import java.lang.ref.PhantomReference;
import java.lang.ref.ReferenceQueue;
import java.util.ArrayList;
import java.util.Vector;
/*
* @test
* @key headful
* @summary Verify that disposed frames are collected with GC
* @author Dmitriy Ermashov (dmitriy.ermashov@oracle.com)
* @library ../../../../lib/testlibrary
* @build ExtendedRobot
* @run main/othervm -Xmx20m FramesGC
*/
public class FramesGC {
ExtendedRobot robot;
ArrayList<PhantomReference<Frame>> refs = new ArrayList<PhantomReference<Frame>>();
ReferenceQueue<Frame> que = new ReferenceQueue<Frame>();
public static void main(String []args) throws Exception {
new FramesGC().doTest();
}
FramesGC() throws Exception{
robot = new ExtendedRobot();
}
void doTest() throws Exception {
for( int i = 1; i <= 3; i++) {
final int j = i;
EventQueue.invokeAndWait(() -> {
createFrame(j);
});
}
robot.waitForIdle();
for (Frame f : Frame.getFrames())
f.dispose();
robot.waitForIdle();
Vector garbage = new Vector();
while (true) {
try {
garbage.add(new byte[1000]);
} catch (OutOfMemoryError er) {
break;
}
}
garbage = null;
int count = 1;
for(; count <= 3; count++)
if(que.remove(5000) == null)
break;
System.out.println("Total no of instances eligible for GC = " + count);
if(count < 3)
throw new RuntimeException("Count = "+count+". Test failed!");
}
void createFrame(int i){
Frame frame = new Frame("Frame " + i);
Button button=new Button("Press Me");
TextArea textArea=new TextArea(5,5);
TextField textField=new TextField(10);
Choice choice=new Choice();
choice.add("One");
choice.add("Two");
choice.add("Three");
choice.add("Four");
choice.add("Five");
List list = new List();
list.add("One");
list.add("Two");
list.add("Three");
list.add("Four");
list.add("Five");
Checkbox checkBox= new Checkbox("Hai");
Scrollbar scrollBar=new Scrollbar(Scrollbar.VERTICAL,0,1,0,200);
CheckboxGroup checkboxGroup=new CheckboxGroup();
Checkbox radioButton=new Checkbox("Hello" ,true, checkboxGroup);
Canvas canvas=new Canvas();
canvas.setSize(100, 100);
canvas.setBackground(java.awt.Color.red);
Label label=new Label("I am label.!");
Cursor customCursor=null;
frame.setLayout(new java.awt.FlowLayout());
button.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));
label.setCursor(new Cursor(Cursor.TEXT_CURSOR));
choice.setCursor(new Cursor(Cursor.WAIT_CURSOR));
list.setCursor(new Cursor(Cursor.HAND_CURSOR));
checkBox.setCursor(new Cursor(Cursor.MOVE_CURSOR));
radioButton.setCursor(new Cursor(Cursor.SE_RESIZE_CURSOR));
scrollBar.setCursor(new Cursor(Cursor.NW_RESIZE_CURSOR));
canvas.setCursor(new Cursor(Cursor.W_RESIZE_CURSOR));
textField.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
/* create a custom cursor */
Toolkit toolkit = Toolkit.getDefaultToolkit();
Dimension d = toolkit.getBestCursorSize(32,32);
int color = toolkit.getMaximumCursorColors();
if(!d.equals(new Dimension(0,0)) && color != 0 )
customCursor = toolkit.createCustomCursor(new BufferedImage( 16, 16, BufferedImage.TYPE_INT_RGB ), new Point(10, 10), "custom cursor.");
else
System.err.println("Platform doesn't support to create a custom cursor.");
textArea.setCursor(customCursor);
frame.add(label);
frame.add(button);
frame.add(choice);
frame.add(list);
frame.add(checkBox);
frame.add(radioButton);
frame.add(scrollBar);
frame.add(canvas);
frame.add(textArea);
frame.add(textField);
frame.add(button);
frame.setLocation(20, 140 * i);
frame.pack();
frame.setVisible(true);
refs.add(new PhantomReference<Frame>(frame, que));
}
}
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