| /* |
| * Copyright (c) 2013, 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. |
| */ |
| |
| /** |
| * @bug 8015334 |
| * @summary Memory leak with kerning. |
| */ |
| |
| import java.awt.EventQueue; |
| import java.awt.Font; |
| import java.awt.FontMetrics; |
| import java.awt.font.TextAttribute; |
| import java.util.HashMap; |
| import java.util.Map; |
| import javax.swing.JLabel; |
| import javax.swing.SwingUtilities; |
| |
| public class KerningLeak { |
| |
| public static void main(String[] args) { |
| EventQueue.invokeLater(new Runnable() { |
| @Override |
| public void run() { |
| leak(); |
| } |
| }); |
| } |
| |
| private static void leak() { |
| Map<TextAttribute, Object> textAttributes = new HashMap<>(); |
| textAttributes.put(TextAttribute.FAMILY, "Sans Serif"); |
| textAttributes.put(TextAttribute.SIZE, 12); |
| textAttributes.put(TextAttribute.KERNING, TextAttribute.KERNING_ON); |
| Font font = Font.getFont(textAttributes); |
| JLabel label = new JLabel(); |
| int dummy = 0; |
| for (int i = 0; i < 500; i++) { |
| if (i % 10 == 0) System.out.println("Starting iter " + (i+1)); |
| for (int j = 0; j <1000; j++) { |
| FontMetrics fm = label.getFontMetrics(font); |
| dummy += SwingUtilities.computeStringWidth(fm, Integer.toString(j)); |
| } |
| } |
| System.out.println("done " + dummy); |
| } |
| } |